Tag: LCA Family Conference

Retinal Disease Gene Therapy Breakthroughs Trace Their Roots to 19th Century Research

Theodor Karl Gustav von Leber would be proud. So would Adolphe Franceschetti and Carl-Henry Alström. 

Their research from the 19th and 20th centuries laid the foundation for groundbreaking gene therapy to treat Leber congenital amaurosis (LCA) and other rare inherited retinal diseases (IRDs). Translational research focused on LCA helped bring forth unprecedented numbers of genetic clinical trials now underway for IRD treatments and cures.

Dr. Tomas S. Aleman, associate professor of ophthalmology and director of the Hereditary Retinal Degeneration Clinics at the Perelman Center for Advanced Medicine and the Center for Advanced Retinal and Ocular Therapeutics at the University of Pennsylvania, discussed the beginnings of research into retinal degeneration as part of his presentation at the Hope in Focus (formally Sofia Sees Hope) second LCA Family Conference in Philadelphia last summer.

Dr. Aleman joined three panelists in a conference session called “One Disease, Many Approaches,” moderated by Brian Mansfield, PhD, executive vice president of research and interim chief scientific officer for the Foundation Fighting Blindness. 

In a research paper published in 1871, Dr. Theodor Karl Gustav von Leber recognized early-infancy severe retinal disease with pupils that are “amaurotic,” related to amaurosis, meaning dimming, darkening, dark or obscure. Amaurotic pupils do not relate to light normally, expanding and contracting more slowly than normal or not responding to light at all. A large group of early-onset inherited retinopathies causing blindness carry his name as Leber’s Congenital Amaurosis. 

“His descriptions still endure,” Dr. Aleman told his audience of more than 80 people from across the country and Mexico.

The evolution of research

Dr. Tomas S. Aleman, associate professor of ophthalmology and director of the Hereditary Retinal Degeneration Clinics at the Perelman Center for Advanced Medicine and the Center for Advanced Retinal and Ocular Therapeutics at the University of Pennsylvania

Dr. Adolphe Franceschetti authored more than 500 articles throughout his life (1896-1968), realizing the retinal origin of the blindness and working on ocular genetics, Dr. Aleman said. A specific behavior comprised of poking, pressing and rubbing the eyes with a knuckle or finger to mechanically evoke perception of light is called Franceschetti’s oculo-digital sign and is characteristic of LCA. Researchers suspect this behavior in affected children may contribute to deep-set eyes and keratoconus, a condition in which the normally round cornea thins and bulges into a cone-like shape, causing distorted vision.

Dr. Carl-Henry Alström confirmed that LCA is genetic in nature, and he is credited with recognizing in the 1950s syndromic forms of LCA and other early-onset retinopathies such as Bardet-Biedl Syndrome, a rare genetic disorder with highly variable symptoms that may include retinal degeneration, obesity, reduced kidney function and many other features.

LCA occurs in 1 in 30,000 to 1 in 80,000 people and makes up 5 percent of all retinal dystrophies. Twenty percent of children with visual impairment and attending special schools have LCA.  

LCA, thought of as one disease until 40 years ago, now consists of more than 27 forms.

“It’s a large pack of diseases,” Dr. Aleman said.

Decades of work toward success

He characterized LCA as a molecularly heterogenous or diverse group of diseases with most primary disease location within the cells that perceive light or photoreceptors. Dr. Aleman detailed the complexities of clinical exams, vision testing and the spectrum of severity of vision loss observed in LCA. One such scenario, known as structural-functional dissociation, occurs when the loss of vision is disproportional to the loss of photoreceptors and is frequently seen in LCA, particularly very early in life. Such scenario represents the ideal for gene corrective treatment strategies. 

RPE65-LCA studies led by a group of researchers at the University of Pennsylvania dating back to the late 1990s solidly demonstrated LCA could be treated. Dr. Aleman  cited the importance of the translational research and clinical trials that led to federal approval of LUXTURNA™, a gene therapy treatment for LCA2 or RPE65-LCA, saying other, more frequent and neglected diseases have gotten attention through the RPE65 story.

He singled out two researchers, Jean Bennett, MD, PhD, who joined him on the conference panel, and her partner in research and marriage, Dr. Albert M. Maguire. He pointed out that their foresight and drive pushed research beyond the initial gratification granted by the spectacular results of early multi-institutional RPE65 gene therapy trials, to fulfill the practical need of an approved treatment for use in the clinic. The treatment, which produces dramatic gains in visual sensitivity, is the first and is, to date, the only gene therapy product approved for clinical use for an inherited retinal disease in the United States and Europe.

More patients have been treated with LUXTURNA since its approval in December 2017 by the U.S. Food and Drug Administration than those who received the medication during the clinical trials.

“I like to think that if it wasn’t for Jean and Albert, we wouldn’t be where we are today,” he told the gathering of patients, patient advocates, family members, researchers, doctors and biotechnology leaders.

No cure yet; work continues

Having one retinal gene therapy approved for use in the clinic, 900 patients enrolled in trials across 30 sites, and progress on therapies for the most severe forms of LCA, Dr. Aleman said, “That should stimulate ourselves to continue.”

He noted that much work remains to be done: LCA has not been cured, and researchers do not have a solution for every type of LCA. Gene therapy may not be enough for every patient or form of LCA, and the potential outcomes after treatments should not be expected to be the same across the heterogeneous group of diseases under the LCA umbrella.

In closing his presentation, Dr. Aleman posed three questions regarding LCA treatment and research: 

  • Can we treat hereditary retinal degenerations/LCA? “Yes, the answer is yes.
  • Can we defeat LCA? “And the answer is also yes.” 
  • Do we have the tools and people to do it? “The answer is also yes.”

Dogs as test cases

In her presentation, Dr. Jean Bennett described how the RPE65 gene, when mutated, causes LCA2 or RPE65-LCA. In early research, Briard herding dogs that carried the mutated gene gained improved vision after receiving subretinal injections of an engineered virus of the human RPE65 gene. The treatment works by encoding an enzyme that converts light into electrical signals interpreted by the brain.

Dr. Bennett was one of the first investigators to use viral vectors, in which a virus is used as a vector or carrier that is genetically engineered to deliver the gene to specific cells in the retina. She is professor of ophthalmology at the Center for Advanced Retinal and Ocular Therapeutics and the F.M. Kirby Center for Molecular Ophthalmology at the Perelman School of Medicine. Please see a related story detailing her conference presentation. 

Pam Stetkiewicz, PhD, vice president of program management at Editas Medicine, described a different approach using gene editing technology developed by Editas. The treatment uses molecular biology to create genomic medicine that precisely edits – by locating and removing – the targeted mutation in LCA10 or CEP290-LCA. She said the technology builds on the foundation inspired by Dr. Bennett’s gene replacement therapy.

More treatments in the works
Pam Stetkiewicz, PhD, vice president of program management at Editas Medicine

Editas Medicine, based in Cambridge, Mass., in partnership with Allergan, based in Dublin, Ireland, use CRISPR/Cas9 gene-editing technology to accomplish DNA editing. The treatment, called EDIT-101, cuts out the mutation and is delivered to photoreceptors by subretinal injection. The editing permanently corrects the original, non-functioning protein essential for vision.

Dr. Stetkiewicz said Editas hopes to use the medicine to treat LCA10. Additionally, the company is developing experimental medicines to treat Usher Syndrome 2A and Retinitis Pigmentosa, among other IRDs. Editas is also working to develop engineered cell medicines to treat cancers and blood diseases, including Sickle Cell Disease. 

The FDA approved the company’s 10,000-page data package, securing the required Investigational New Drug (IND) application to begin clinical studies with EDIT-101 in humans.

Editas and Allergan currently are recruiting patients with CEP290-LCA for a natural history study that will create the basis to test safety and efficacy in the Phase 1/2 clinical trial of EDIT-101.

Dr. Stetkiewicz said preclinical data shows that EDIT-101 is well-tolerated, efficacious and safe. Measurement of editing intended DNA versus unintended DNA is called specificity. Human retinal explants, pieces of tissue cultured for growth, treated with EDIT-101 resulted in a high level of intended editing with zero unintended editing, meaning the treatment has an excellent genomic specificity profile.

“So, we’re thrilled with this result,” she said. 

Phase 1/2 clinical trials will begin in the second half of this year with 18 patients age 3 years and older at clinical sites in Massachusetts, Florida, Oregon and Michigan.

DNA, RNA, & LCA
Michael Schwartz, M.S., MBA, is vice president of ophthalmology at ProQR Therapeutics and is the global project leader for Sepofarsen (QR-110), an RNA therapy under development.

Panelist Michael Schwartz, M.S., MBA, is vice president of ophthalmology at ProQR Therapeutics and is the global project leader for Sepofarsen (QR-110), an RNA therapy under development. 

ProQR, based in The Netherlands with offices in Cambridge, Mass., is developing an antisense oligonucleotide (AON) product, Sepofarsen (QR-110), designed as a disease-modifying therapy for LCA due to the c.2991 +1655A>G mutation (p.Cys998X) in the CEP290 gene. The company is developing AON products, which are RNA therapies primarily for ophthalmic inherited disease. AON are short, single-stranded RNA molecules that interact with messenger RNA to prevent translation of a targeted gene.

Sepofarsen works like genetic tape to block the mutation p.Cys998X in the CEP290 gene.

To help understand what this means, Schwartz presented background on DNA, RNA and LCA:

The body comprises many different cells, and we have DNA in each of these cells. DNA contains many instructions for making all the different proteins, which are important building blocks needed by a cell.

When the cell needs a building block, it first copies instructions to a shorter blueprint called RNA; the RNA is then used to guide how to make a new protein, like CEP290. Together, these different proteins make sure the cell works as it should, resulting in normal vision.

But things don’t always go right. Inherited diseases are caused by mistakes in the DNA, and then these mistakes are copied into the RNA, as in the p.Cys998X mutation in CEP290.

This means that the proteins also will have the mistakes in them. They can’t work properly, and the cell cannot function as it should. This is what causes LCA.

He also detailed the workings of RNA therapies, saying they consist of short RNA molecules, with the aim to repair the mutation in a patient’s RNA – without changing the DNA – and to restore the function of the protein and the cell to hopefully improve vision.

A normal CEP290 protein maintains cilium structure in the photoreceptors of the retina and enables normal protein transport to the photoreceptor outer segment.

The CEP290 p.Cys998X mutation creates an environment that results in an aberrant exon that disrupts the splicing code of genes by truncating the CEP290 protein, ultimately leading to the degeneration of the photoreceptor cells.

Sepofarsen, delivered by intravitreal injection, blocks the recognition of the aberrance, and that results in favoring production of normal protein. 

“We can actually reverse the phenotype of that mutation,” Schwartz said.

ProQR is finalizing interim results of its ongoing Phase 1/2 trial involving 11 people from ages 8 to 44. Schwartz said most of the patients had clinically meaningful improvement. The company’s Phase 2/3 trial began, with the first patient dosed in April. The 24-month trial expects to enroll 30 patients.

He cited an exceptional patient responder in the Phase 1/2 trial in which an adult with only light perception vision before the trial could now read letters on the eye chart.

“They said they could see things out of the treated eye that they had not seen for decades.”

Rare Disease Advocacy: There’s Power In Numbers

Tell your story. Tell your story again. Then tell it again.  

That’s the beginning of advocacy for rare disease. 

“You have to be assertive and speak up. You don’t have time to waste!” advocate Terri Booker implored her audience at the Sofia Sees Hope second LCA Family Conference.  

Booker, a lawyer and an advocate for people living with Sickle Cell Disease (SCD), spoke as part of a four-member, patient-advocacy panel called “Your Voice Matters!” moderated by Hope in Focus (formally Sofia Sees Hope) Executive Director Annette Tonti.

More than 80 people from 15 states and Mexico attended the July 27 conference in Philadelphia. The event brought together people living with Leber congenital amaurosis (LCA), inherited retinal diseases (IRDs), SCD, which is a group of inherited blood disorders, and Barth Syndrome, a rare genetic disorder that can cause heart failure, muscle weakness and infection.

These diseases are among the 7,000 rare diseases affecting 25 million Americans. 

Kristen Steele hired a lawyer and filed a lawsuit in order to make her career dreams come true. Read her story here.

“Imagine the impact if we all get together and say, ‘We’re here! Twenty-five million people who can vote!’ ” said Booker, who works professionally and personally to help seek justice in the Philadelphia community.

Live long with advocacy

She co-founded the Young Adult Sickle Cell Alliance after her last hospitalization for SCD-related problems in 2012. Doctors with no answers asked what she usually did when symptoms occur, and she replied: “I thought I was here to get help from you.”

SCD is a group of disorders that affects hemoglobin, the molecule in red blood cells that delivers oxygen to cells throughout the body, according to the National Institutes of Health (NIH). People affected have atypical hemoglobin molecules called hemoglobin S, which can distort red blood cells into a sickle or crescent shape.

“I’m talking about it every chance I get,” she said.

If someone notices she’s limping, she tells them she’s got sickle cell, a genetic disorder, “where a whole bunch of cells get together and attack your body, your heart, your eyes, your joints.”

“It’s about accommodating you and whatever it is you’re going through, to make it easier to function.”

Young people with SCD especially need to be empowered to speak up for what they need when they need it and Booker focuses on youth for a big reason: “As a child (with a rare disease), they love you. Once you become an adult, people don’t care about you anymore.”

She encouraged advocating for rare diseases by taking part in events surrounding Rare Disease Day, celebrated annually the last day of February. Rare Disease Week in Washington, D.C., and a multitude of events happen nationally and globally around that time.  

“Help sickle cell patients live long with advocacy,” she said.

The more members of Congress and state legislatures hear stories from rare disease patients and advocates, the more progress will be made toward funding research to find treatments and cures.

“Don’t be afraid,” Booker said. “No one can tell your story but you.”

‘Increase the volume’

Panel member Jill Dolgin, PharmD, Head of Patient Advocacy at Applied Genetic Technologies Corp. (AGTC), said rare diseases are small diseases, and suggested a way for people with rare disease to be heard above the noise of research news on more familiar diseases.

“I call it building an orchestra,” – talking about LCA, inherited retinal diseases (IRDs), blindness and genetic testing on the internet, in social media and at conferences – so you’re all “singing the same song” and constantly increasing the volume and frequency of the messages in the song. 

AGTC is developing genetic therapies to treat patients with rare inherited conditions, with its most advanced therapy programs designed to restore visual function and meet the needs of patients with rare blinding conditions, according to the company’s website.

Dr. Dolgin, a healthcare professional with more than 20 years’ global experience in public policy and patient and professional advocacy, said she brings the voice of the patient to small- and medium-sized biotechs to ensure that the needs of the patient are considered and incorporated into every aspect of drug development.

“I’m really helping one patient, one family at a time.” 

‘Be involved’

Panelist Jamie Ring is Head of Patient Advocacy at Spark Therapeutics, developer of LUXTURNA™, the first approved drug in the United States and Europe to treat an inherited genetic disease and to treat the RPE65 gene which, when mutated, causes one of the more than 25 forms of LCA. She previously worked at Genzyme, a Sanofi company, where she led rare disease patient advocacy and humanitarian programs. 

Ring said her role at Spark Therapeutics is three-fold. 

She serves as a liaison between the company and rare disease communities: “Serving as the voice of the patient inside the walls of our organization.”

She hears directly from the community: “At Spark, it’s really critical for us to understand what the needs of the patients are. You all have a voice at that table.”

Ring also helps connect different rare diseases together to learn how they develop and progress.

LUXTURNA came to fruition after 12 years of research and more that $500 million in investment. The U.S. Food and Drug Administration gave its approval in December 2017. 

“Be involved,” Ring advised the gathering. “Understanding what matters to you, matters to us.”

Panelist Emily Milligan, Executive Director of the Barth Syndrome Foundation, said she is socially and medically committed to serving underserved populations. Before leading the foundation, she launched an $80 million venture fund developing products for Type 1 diabetes and worked with the Juvenile Diabetes Research Foundation overseeing an annual $100 million research portfolio.

Barth Syndrome primarily affects boys and is a multiple-system, complex disorder caused by a chromosomal mutation. It can cause growth delay, impaired lipid metabolism and extreme fatigue. Severe symptoms can result in needing a heart transplant, contracting potentially lethal infections and even death.  

The syndrome, Milligan said, can turn a scraped knee into a trip to the emergency room with sepsis, a life-threatening condition occurring when the body cannot fight infection.

The foundation, she said, became the 14th organization to host a high-level meeting with the FDA, where more than 25 percent of the Barth community, which is about 250 worldwide, told their stories. In research, a second clinical trial is underway toward changing the biology associated with Barth that could mean an improved quality of life for some.

“You have to come together,” Milligan told the group. 

This family conference in Philadelphia has such an enormous impact when people gather together for a common goal, she said. 

“You have no idea the power in numbers. You are a community.”

Dr. Jean Bennett: ‘Seeing the Light with Retinal Gene Therapy’

Known as a pioneer in gene therapy, Jean Bennett, MD, PhD, surveyed her audience of patients and families living with Leber congenital amaurosis and declared: “YOU are all the pioneers!”

Dr. Bennett, addressing more than 80 people from 15 states and Mexico at the Hope in Focus (formally Sofia Sees Hope) second LCA Family Conference, characterized the meeting as a great place to reach out to patients to participate in clinical trials. Researchers normally recruit study patients through advertising.

Along with families living with LCA and other inherited retinal diseases (IRDs), people attending the summer conference in Philadelphia included patient advocates, doctors, researchers and biotechnology industry leaders.

Dr. Bennett is Professor of Ophthalmology at the Center for Advanced Retinal and Ocular Therapeutics and the F.M. Kirby Center for Molecular Ophthalmology at the Perelman School of Medicine, University of Pennsylvania. She gave her presentation as part of a conference session called “One Disease, Many Approaches.”

Viral Vectors Key 

Dr. Bennett was one of the first investigators to use viral vectors, in which a virus is used as a vector or carrier that is genetically engineered to deliver the gene to specific cells in the retina.

Lancelot, a golden colored dog standing on the steps with the U.S. Capital behind him
Lancelot on steps of the U.S. Capitol.

She emphasized that LUXTURNA™, the breakthrough genetic treatment she and her colleagues developed at Children’s Hospital of Philadelphia (CHOP) and Spark Therapeutics, began with the successful treatment of a special being: Lancelot, the first in a line of Briard herding dogs, who helped drive research to bring to market gene therapy that improved vision by focusing on a particular mutated gene.

Dr. Bennett and her colleagues studied Lancelot and the other dogs after learning that a veterinary ophthalmologist had identified the gene which, when mutated, led to blindness in Swedish Briard dogs. 

The research dogs received an engineered virus delivering the human RPE65 gene, a gene that, when mutated, causes LCA RPE65, also known as LCA2, one of the more than 25 forms of LCA. Doctors delivered the drug by subretinal injection through a needle the size of an eyelash. The treatment works by encoding an enzyme that converts light into electrical signals interpreted by the brain.

Dr. Bennett’s presentation, “Seeing the Light with Retinal Gene Therapy: From Fantasy to Reality,” features a photograph of Lancelot wearing glasses and perusing his article in Nature Genetics magazine. 

Lancelot accompanied her on her frequent Congressional visits to lobby for more research funding. Dr. Bennett said Lancelot’s distant cousin, Venus, and later her pups, Mercury and Saturn, also successfully received the treatment. 

According to an article in the Philadelphia Inquirer, “Before the treatment, Venus preferred to crouch in a corner for fear of bumping into objects. But after the treatment, it was clear that Venus and the other dogs were able to see. They could easily navigate obstacle courses set up by researchers. Venus was a new dog, eager to walk around and explore grass, birds, and squirrels for the first time.”

Dr. Bennett, noting Venus’ recent passing, said, “She died of old age. Still seeing.” The headline on Venus’ July 16 obituary in the Philadelphia Inquirer read: “Main Line dog, used to help cure blindness in humans, dies at 12.”

First Dogs, Then People

The trials on dogs led to successful treatment in people beginning in 2007 after Dr. Bennett and her husband, Dr. Albert Maguire, teamed up with Dr. Katherine High to run human clinical trials. Christian Guardino, an America’s Got Talent Golden Buzzer award winner from Long Island, received treatment at age 13 during the trials, as well as others, including Cleveland-area resident Tami Morehouse, who at age 44 at the time, was the oldest participant in the trial. 

LUXTURNA, approved by the U.S. Food and Drug Administration in December 2017, is the first and only approved gene therapy for inherited disease in the United States and Europe. The breakthrough medicine unlocked the potential of the Human Genome Project to provide options for people when there were none.

The treatment fostered pioneering changes in medical practices, motivating ophthalmologists and insurers to do genetic testing, and it created a path for genetic treatments to blindness.

Dr. Bennett said she is thankful for the clinical trial participants, team members, regulatory bodies, advisors and the dogs who helped along the way.

Genetic research still faces a host of challenges, including the rapid degeneration of cells needed for gene therapy to work and too long a span of time to get results for diseases that progress very slowly.

More patients have been treated with LUXTURNA post-FDA approval than the 29 who received treatment during the trials. In the first few months after approval, more than a dozen people underwent treatment at CHOP, one of the 10 approved treatment centers in the United States. Also, the first patient in Paris received the gene therapy in January.

Successes with the New Treatment

'Retinal Gene Therapy is Alive and Well' slide

Before LUXTURNA, no path existed for pediatric drug development in ophthalmology. In a slide titled “Retinal Gene Therapy is Alive & Well,” Dr. Bennett said more than 700 people are enrolled in clinical trials at more than 30 sites. 

“We obtained approval and paved the way for all future pediatric gene therapy trials,” she said. 

As this genetic superhero said at the beginning of her presentation – that the audience members are the pioneers – Dr. Bennett looked out at the gathering as she ended her talk and declared: “It is the families who are really the heroes.”

Explosive Growth Seen in Field of Rare Inherited Retinal Disease Research

Advances in genetic sequencing boosted research into rare inherited retinal diseases (IRDs), making a tremendous impact on the number of clinical trials underway for genetic treatments.

“There are 37 trials in IRDs; 10 years ago, you could count them on your fingers,” said Foundation Fighting Blindness Chief Executive Officer Benjamin Yerxa, Ph.D. 

Also, genetic testing zoomed from zero-possibility to an individual being able to receive a full genetic sequence within a few weeks for a couple of thousand dollars.

Dr. Ben Yerxa presenting
Dr. Ben Yerxa at the LCA Family Conference in July.

Dr. Yerxa opened the Hope in Focus (formally Sofia Sees Hope) second LCA Family Conference on July 27 in Philadelphia before an audience of more than 80 people from 15 states and Mexico. They represented patients and families living with Leber congenital amaurosis (LCA), other rare diseases (retinal and otherwise), and advocates, doctors, researchers and biotech leaders. 

He delivered updates on the Foundation’s work in his presentation, “Accelerating Translation of New Treatments for IRDs – A Foundation’s Perspective.” The Foundation, the world’s largest private funding source for research into treatments and cures for IRDs, has raised more than $750 million toward its mission since its founding in 1971. Sofia Sees Hope partners with the Foundation by helping provide families with free access to genetic testing, and funding research.

Advances in genetic sequencing

Dr. Yerxa credited the Human Genome Project (HGP) – costing an inflation-adjusted $5 billion – with netting continued advances in genetic sequencing and making great gains in the IRD field.

Researchers have identified the mutated genes in 65 percent of people with retinal disease who get genetically tested, and in 2017, the U.S. Food and Drug Administration approved LUXTURNA™, the first approved gene therapy for the eye or an inherited condition. LUXTURNA is for people with mutations in the RPE65 gene, one of the more than 25 genes that, when mutated, can lead to LCA.

Dr. Yerxa said that approximately 200,000 people in the United States have an IRD, with each condition meeting the definition of an orphan disease. 

'LCA By The Numbers' slide from 2019 LCA Family Conference

He also delineated the LCA trials in progress in an “LCA by the Numbers” presentation. He discussed an emerging treatment for CEP290 (LCA10) by ProQR, which is in a Phase 2/3 clinical trial, and research also on CEP290 by Editas Medicine and Allergan, who are recruiting patients in a landmark clinical trial to test a gene-editing technique called CRISPR/Cas9.

“We all know it takes a village,” Dr. Yerxa said. “There are tons of people involved in these programs.”

Supporting retinal research

'Innovation in Venture Philanthropy: RD Fund' slide

He also detailed the Foundation’s new “Innovation in Venture Philanthropy: RD Fund,” a first-of-a-kind retinal degeneration fund focused on IRDs. It is an internal venture philanthropy investment account overseen by an independent board of directors. Donor dollars go to biotechnology companies as investments, with financial returns reinvested to support the Foundation’s mission. 

Among its contributions to research, the Foundation gave $10 million toward the development of LUXTURNA and $6 million to the Natural History of the Progression of Atrophy Secondary to Stargardt Disease or ProgStar studies that produced new knowledge and potential outcome measures. 

Dr. Yerxa also reported impressive gains in membership to My Retina Tracker® (MRT), the free and secure online international patient registry managed by the Foundation.

“I call it the LUXTURNA effect. Thanks to LUXTURNA, registration went up like a hockey stick.”

With membership at more than 23,000 and growing, the registry’s goal is to drive research toward prevention, treatments and cures for people living with Retinitis Pigmentosa (RP), Stargardt disease, Usher syndrome and the whole spectrum of inherited retinal degenerative diseases, including LCA.

50 logos showing the involvement of biotechs in vision research

In a slide titled “Our Space is Very Active” showing a collage of more than 50 logos of biotech companies involved with vision research, Dr. Yerxa said, “More and more people are jumping into this space. 

“This is good news. Ocular is hot.”

Human Genome Project: Critical to Modern Gene Therapy Success

The long and sometimes uncompromising road to completing the Human Genome Project (HGP) paved the way for today’s surge in genetic therapy, Dr. Katherine A. High said in her presentation at the second Hope in Focus (formally Sofia See’s Hope) LCA Family Conference.

“It was a tremendous achievement,” Dr. High said, “And it forms an important bedrock for everything we are trying to do in gene therapy.”

The HGP began in 1990 with an international, collaborative quest to map and understand all the genes of human beings and their roles in health and disease. The project, completed in 2003, revealed that there are probably about 20,500 human genes, referred to collectively as our genome, according to the National Human Genome Research Institute (NHGRI).

Dr. Katherine High and Laura Manfre next to a Welcome poster
Dr. Katherine High and Sofia Sees Hope co-co-founder Laura Manfre at the LCA Family Conference in July.

Dr. High, keynote speaker and accomplished hematologist with a longstanding interest in gene therapy for genetic disease, kicked off the July 27 conference in Philadelphia.

More than 80 patients, family members, advocates, doctors, researchers and biotech industry leaders from 15 states and Mexico gathered for exchanges of knowledge and ideas about Leber congenital amaurosis, inherited retinal diseases (IRD) and other rare diseases. The conference grew out of the Sofia Sees Hope Family Connections program that brings together families living with LCA and other IRDs in a supportive community to help alleviate feelings of isolation that often come with a rare-disease diagnosis. 

Dr. High and her team at Children’s Hospital of Philadelphia (CHOP), including Dr. Jean Bennett and Dr. Albert Maguire, developed – from clinical trials to regulatory approval – the first gene therapy for any inherited genetic disease in the United States; it also is the first genetic therapy targeting a retinal disease worldwide. The treatment focused on LCA caused by mutations in the gene RPE65, one of the more than 25 different genes, that, when mutated, can lead to LCA.

‘The Long & Winding Road’

Spark Therapeutics, a company that spun off the team’s research at CHOP, developed the therapy called LUXTURNA™ after 12 years of research and more than $500 million in investment. The U.S. Food and Drug Administration (FDA) approved the human-engineered, injectable drug in December 2017. Beginning in 2018, patients with low vision caused by LCA-RPE65 underwent surgery to help improve their eyesight. 

LUXTURNA and the dozens of clinical trials now underway for retinal disease would not be possible if not for the HGP. Dr. High, Spark’s president and head of research and development, elaborated on the genome project in her presentation, “The Long and Winding Road: How the Human Genome Project and Gene Therapy Research Led to the First Gene Therapies for Genetic Disease.”

The ultimate product of the HGP – detailed information about the structure, organization and function of the complete set of human genes – can be thought of as the basic set of inheritable instructions for the development and function of a human being, according to NHGRI information.

Dr. High said the burden of genetic disease falls heavily on children’s hospitals, with 25 million Americans having a rare genetic disease. 

A 4-year-old made genetic history after receiving the first genetic transfer in the United States in 1990, leading eventually to licensing of a product for the same disease in Europe in 2016. But that span of time did not represent an unbroken chain of successes, Dr. High said. “Instead, it was punctuated by a number of adverse events and failed results.”

Rocky road to success

A teenager died in a 1999 genetic trial in Philadelphia, and in 2003, children in a Parisian clinical trial developed leukemia. 

A Wall Street Journal article about Spark Therapeutics

“Gene therapy was just not ready for prime time and there was a decline in trials and participation.”

Headlines such as “Gene Therapy Still Lacks Breakthrough” and “Gene Therapy: cursed or inching toward credibility” mirrored waning interest from pharmaceutical companies and investors.

Instead, the American and European Societies of Gene and Cell Therapy, the National Institutes of Health (NIH), of which the National Human Genome Research Institute is part, and academic medical centers, like CHOP and its Center for Cellular & Molecular Therapeutics, sustained genetic therapy research through rough times, allowing investigators to develop therapeutics based on best science, not commercial considerations, Dr. High said.

Investing in the RPE65 blindness clinical trials during this time ultimately led to the development and FDA approval of LUXTURNA.

“The ability to work through those adverse events brought us to where we are now,” she said.

An ‘extraordinary’ level of activity

In the United States, the clinical development phase of a drug begins when a sponsor files an Investigational New Drug application (IND) with the FDA. IND submissions with gene therapy products went from zero in 1963, to three in 1990, to more than 100 in 2017. Following LUXTURNA’s market entrance in 2018, sponsors submitted more than 200 INDs.

“The level of activity in the last few years is truly extraordinary. It’s a very compelling statement of how people are investing time and energy into gene therapy,” which High said is probably the most complicated treatment researchers have tried to develop.

“It’s a complex therapeutic. The outside is a protein. The inside is a piece of DNA and those things have to be assembled in the exact proportions or it’s not going to work right.”

Dr. High also described the increased progression of identifying genes involved with vision – from zero in 1980 to more than 300 by January 2019. 

“It’s daunting to think about the number of development programs that might need to be initiated and taken all the way through. But a journey of a thousand miles begins with a single step.”

LCA Family Conference 2019: A Lot to Unpack!

The news is out from our 2019 LCA Family Conference  and it’s terrific!

Families living with Leber congenital amaurosis (LCA) and other rare inherited retinal diseases (IRDs) learned at Hope in Focus (formally Sofia Sees Hope)’s July 27 conference in Philadelphia that they are living in a time of the most dramatic growth ever in genetic research. 

And – as with most good things – there is a caveat: Patience.

While researchers report a record number of genetic studies in various stages, they face long and arduous journeys in developing federally approved treatments.

Two attendees next to the welcome poster at the 2019 LCA Family Conference

In her keynote address, Dr. Katherine High, Co-founder, President and Chief Scientific Officer of Spark Therapeutics, said initiation of a clinical trial to licensing of a product easily can take 7 to 10 years.

“My take-home message is patience is a requirement in drug development.”

Dr. High and a team from Children’s Hospital of Philadelphia (CHOP) led by Dr. Jean Bennett and Dr. Albert Maguire from Spark Therapeutics developed LUXTURNA™, the first genetic therapy for any inherited rare disease in the United States and the first genetic therapy for RPE65, one of the more than 25 gene mutations caused by LCA. 

The drug received federal approval in December 2017, creating the opportunity for visually impaired patients to undergo surgery and experience improved eyesight. Federal Food and Drug Administration (FDA) approval also signaled increased scientific and public optimism for expanding genetic research into treatments and cures for inherited diseases.

View our Photo Gallery from the 2019 LCA Family Conference!

Connecting patients to patients

Speakers sitting during a panel

More than 80 people – patients, family members, advocates, doctors, researchers and biotech industry leaders – gathered at the conference from July 26-28 at the Warwick Hotel Rittenhouse Square.

The conference was sponsored by MeiraGTx, Editas Medicine, Spark Therapeutics, Sanofi Genzyme, Foundation Fighting Blindness, Allergan, ProQR, Two Blind Brothers, Applied Genetic Technology Corp. (AGTC) and Lions Clubs International. 

Family members and advocates from throughout the country and Mexico said they appreciated the depth and quality of information presented at the conference that included information from other rare disease groups, the Young Adult Sickle Cell Alliance and the Barth Syndrome Foundation, on how they approach patient advocacy and patient life.

Laura Manfre, co-founder of Sofia Sees Hope and president of its Board of Directors, said the nonprofit’s second conference ever was designed to bring information to patients and families as well as connect those patients to researchers and industry.

“A huge part of our mission is to make sure that members of the rare disease community do not feel alone,” Manfre said. “And not only do we hear from patients all the time that they want to connect with other patients, but we hear from researchers and pharma that they not only want to talk to patients, but they need to do so, because it gives them context and perspective on their work. Our LCA Family Conference accomplished that 10-fold this year.”

Three generations of at least two families attended, with one family connecting directly with Spark for possible treatment of their 4-year-old daughter/granddaughter, Jordynn, who has LCA-RPE65, also known as LCA2. 

A family at the 2019 LCA Family Conference

Jordynn’s mom, Joy Goodwine of upstate New York, said it was great to meet families with kids who have gone through the same experiences. 

“Learning about the treatment and getting the education about all of it really gave me something to think about as my daughter’s journey continues as she lives with this visual impairment,” she said. “Knowing that my daughter can thrive and live a happy life with some occasional bumps in the road was a wonderful feeling.”

LCA research progress

Ben Yerxa, Ph.D., CEO of Foundation Fighting Blindness, told the group that awareness in genetics helped increase the number of people enrolled in My Retina Tracker®, a free and secure online registry with a goal to drive research toward prevention, treatments and cures for people living with a spectrum of inherited retinal degenerative diseases, including LCA.

Ben Yerxa presenting at the 2019 LCA Family Conference

“I call it the LUXTURNA effect. It went up like a hockey stick,” he said of the more than 23,000 people now in the registry.

Dr. Yerxa reviewed LCA research progress, detailing 18 forms of the disease and highlighting study stages, including a current recruiting request by Editas Medicine and Allergan for patients for Phase 2 research on LCA-CEP290 (LCA10), and citing more than 35 select trials traveling through the clinical trial pipeline.

“We know it takes a village,” he said. “There are tons of people involved in these programs.”

In a session titled “Your Voice Matters,” patient advocates urged people to tell their stories. Terri Booker, Co-Founder of the Young Adult Sickle Cell Alliance, said she talks about her disease every chance she gets. She founded the youth alliance to empower young patients with advocacy tools to help them live longer.

Also included in the panel were Jamie Ring, Head of Patient Advocacy for Spark, Jill Dolgin, Head of Patient Advocacy for AGTC, and Emily Milligan, Executive Director of the Barth Syndrome Foundation.

Brian Mansfield, Ph.D., Executive Vice President of Research and interim Chief Scientific Officer at the Foundation Fighting Blindness, moderated a panel called “One Disease, Many Approaches.”

Attacking LCA on many fronts

The audience heard from Dr. Bennett about injection treatment, from Pam Stetkiewicz, Vice President of Program Management for Editas Medicine, about gene-editing treatment, and from Dr. Tomas Aleman on ways to measure the impact of therapies. Dr. Aleman is Director of the Center for Hereditary Retinal Degeneration at Perelman Center for Advanced Medicine and Director of Retinal Degeneration Service at the Center for Advanced Retinal Ocular Therapeutics (CAROT). 

A panel from the 2019 LCA Family Conference

Also, Michael Schwartz, Global Project Leader for Sepofarsen at ProQR, spoke about repairing the underlying defect in a nucleic acid and the potential to stop progression or reverse some effects of LCA10 or CEP-290.

Ben Shaberman, Senior Director of Scientific Outreach and Community Engagement at Foundation Fighting Blindness, moderated a third session: “All About Clinical Trials.” Dr. Wiley Chambers, the FDA’s Supervisory Medical Officer in the Office of New Drugs, cautioned those gathered about bogus trials, encouraging them to make sure their trial of interest received an FDA Investigational New Drug (IND) application number.

Dr. Michel Michaelides, Head of Clinical Ophthalmology at MeiraGTx, described other relevant treatments, such as optogenetics, a technique that uses light to control cells in living tissue, and retinal implant technology.

Tami Morehouse, who received the genetic therapy treatment for RPE65 during its trials, and her husband, Michael, rounded out the panel.

“She was on a pathway to darkness and she knew it,” Michael said. “It’s a huge life-changing event for us.”

Tami and Michael

Tami became a global pioneer in the LCA world by being the oldest person at age 44 to receive the treatment during its clinical trials.

“In all honesty, I never thought that I’d ever have a shot at seeing,” she said. “I got way more than I anticipated.”

Diagnosis to Treatment: Pioneering LCA Patient Eases the Journey

As a global advocacy organization dedicated to helping those affected by blindness caused by rare inherited retinal disease, Hope in Focus (formally Sofia Sees Hope) connects families with Leber congenital amaurosis (LCA) and other IRDs through its Family Connections program and through events such as its second LCA Family Conference set for July 26-28 in Philadelphia.

The conference offers opportunities to engage in thoughtful and interactive exchanges of knowledge, ideas and viewpoints in sessions focusing on research, future treatments, advocacy and people sharing their stories.

Tami Morehouse, third from left, during a panel at the 2018 LCA Family Conference in Groton, CT.

Pioneering LCA patient Tami Morehouse attended the patient advocacy session of the first LCA Family Conference last October in Groton, CT, and participated as a panelist in a session titled: “The Road to Treatment: Understanding How Therapies Are Developed.”

She made research history in the LCA world and in the nation in 2009, when at age 44 during trials for genetic therapy medication, doctors injected under her retinas a human-engineered virus that restored an essential protein for vision. Spark Therapeutics developed the drug that was marketed as LUXTURNA™ following U.S. Food & Drug Administration approval in December 2017.

Tami lives in the Cleveland area and is among the LCA patients who have shared their stories to help others navigate the obstacles that accompany the diagnosis of a rare disease and the journey in finding a treatment.

We’ll share the words she shared with two families – the mom of a boy who received the new genetic therapy treatment, and a mom, and her little boy, who asked a lot of questions about the surgery.

Making Family Connections

Tami holds a special place in the heart Sarah St. Pierre Schroeder, whose then-9-year-old son, Creed, became the youngest person to receive the new genetic therapy for LCA with a mutation in his RPE65 gene. (See our series of stories about Creed, his spring 2018 surgery and his journey.)

Because Tami is the oldest person who successfully received the experimental treatment in both eyes in a clinical drug trial a decade ago, she possesses invaluable insight into the unknowns faced by Sarah and her third grader, who live in Mount Dora, Fla.  

Sarah said she is forever grateful for Tami talking with her.

“I will never forget the emotions I felt when Tami reached out to me. Every sentence in her email brought me more comfort about what I was doing for Creed,” Sarah said.

“She was so open about her journey, I felt like we had known each other forever. I felt like she was with us in Miami (where Creed underwent surgery at Bascom Palmer Eye Institute).

“Suddenly I was able to ask someone all the questions I had and get answers. Not just ‘maybe this will happen.’ ”  

Here’s some of what Tami shared with us about talking with Sarah:

I’ve had some great conversations with those who have either been involved in the process of treatment of LCA or are hopeful they might be involved in a clinical trial in the future. I’m sure you aren’t surprised when I say that emotions usually run pretty high during these conversations.

Sarah was the first parent I talked with. I kept thinking about her and Creed in the days prior to Creed’s procedure. I remembered how I felt when I was in their shoes and couldn’t help but reach out to them on the night before Creed’s procedure. As it turned out, Sarah seemed very open and happy to talk with someone who had been there and understood a little about all that they were feeling and wondering about.

Sarah and I had lots of communication that night and the day of his procedure, which seemed like it would never get here, and in the days following.

Hearing about the improvements in Creed’s vision and how it has changed his life has been so much fun. Thinking about it is still a bit overwhelming sometimes, but wonderful. I’m so glad for him.

It’s nice to check in with Sarah from time to time to talk about the progress and adjustments they are making. I hope they enjoy our interactions as much as I do.

Here is some of what Tami had to share after talking with a mom considering gene therapy for her son. (Tami spoke to the woman and her son as a confidant and did not want to disclose their names.)

The mom asked that I talk with her little one specifically about what the procedure was like. She wanted him to talk with someone who had actually gone through it. We had a great conversation.

I talked to him about things like, the fact that my surgery wasn’t painful for me but did feel a little funny afterward; that I did have to have lots of eye drops; that my surgery didn’t even take very long; that the doctors and nurses were really nice; that my family could be with me after the surgery when I needed them; and that I was pretty comfortable through the whole thing.

I told him that the best part is that I can see a little better than I could before I had the surgery.

At the beginning of the conversation, the little guy seemed pretty quiet and uncomfortable. As the conversation went on, he appeared more relaxed and seemed to be listening pretty intently. His first question was, “WOW, you mean you had surgery already? WOW!”

He also asked if I thought he would be able to get used to all the eye drops and if it would be a long time before he could play video games after his surgery. I told him that I wasn’t sure of how long he would have to wait to play games, but that if he was patient, his reward might be some really good pizza and chocolate chip cookies, which is what I got to eat after my surgery was over. I got a big giggle out of him then. He said that he is pretty happy that he might get the surgery.

If one thing I said to this child makes his surgery easier for him, I’ll be so happy. I just hope it happens for him as they anticipate.

Mom and I talked about the reasons why she feels good about the safety of the (clinical) trial. That’s always a huge issue with just about everyone that I’ve talked to prior to receiving treatment or participating in any trial. Safety always comes first. Understanding why a procedure is determined to be safe is very important.

We also talked about the importance of being aware of what kinds of results treatment might provide for her son, as well as what she and her son are expecting or hoping for from a particular treatment. There were a couple of participants in the trial with me that seemed to have really high expectations that just weren’t possible. Luckily, it seems like this little guy and his mom are in a good place when it comes to their expectations.

Anytime I talk with people seeking any treatment for any rare inherited retinal disease, I strongly encourage them to do their best to understand as much as possible about the procedure, care and services that they are considering or receiving. This can be made easier by reading everything available about the treatment they are pursuing. Unfortunately, sometimes reading and understanding some of this printed information are two different things.

The more that is known about the treatment ahead of time, the easier it is to understand what is going on when making decisions prior to and during treatment.

Asking questions and expressing any concerns that come up is also very important when making decisions about accepting or going through treatment. Taking any available opportunity to develop relationships and open lines of communication with any medical and/or clinical staff is very important. Doing this can make it much easier for patients, as well as physicians, to openly ask questions and express concerns. This can make all the difference in the world when it comes to getting the answers and information needed.

Another thing to consider for individuals who do receive treatment and experience restored vision, is how improved vision may affect their lives.

For some, this is a wonderful thing. For others, this can be a bit of a challenge.

Thank you, Tami.

Living with LCA: ‘Know It’s Not Something You’re Going to Conquer in One Day’

The best of both worlds – that’s how Ashlyn Lincoln describes life with her two sons: 4-year-old Gunner, who was born without vision, and 7-year-old Ace, who is sighted.

“Both Ace and Gunner teach us many life lessons, regardless of who is sighted and who is blind,” says their 29-year-old mom.

The two boys wearing grey shirts, sitting next to each other
7-year-old Ace and his 4-year-old brother Gunner. Gunner was diagnosed at 6 months with LCA10, caused by a mutation in his CEP290 gene. Doctors determined Gunner came into this world with no usable vision cells and no light perception.

Living in eastern Iowa, Ashlyn and her husband, Axel, noticed problems with Gunner’s eyes in August 2014, when he was about 2 weeks old: he stayed awake during the day and his eyes would not focus. The pediatrician examining their infant at 6 weeks wasn’t concerned, but to put them at ease, he referred them to the first in what would become a series of specialists, leading to lots of tests on Gunner’s eyes and on his parents’ genetic backgrounds.

Gunner was diagnosed with Leber congenital amaurosis (LCA) at 4 months; at 6 months in February 2015, his parents learned through genetic testing that he had LCA10, caused by a mutation in his CEP290 gene. Doctors determined Gunner came into this world with no usable vision cells and no light perception.

Last May, the family moved to a suburb of Nashville, seeking a stronger support system and better resources for Gunner, who is now thriving at the Tennessee School for the Blind.

Mr. Independent

Gunner loves prekindergarten, especially gym time and swimming lessons. He listens to try to understand musical instruments, and he loves making art and writing on the Brailler. “He’s pretty independent,” Ashlyn says.

Ace and Gunner have a typical sibling relationship, blaming each other, kicking each other, playing in their own world, she says. “Ace pretty much treats him like he is sighted. He adjusts (when he remembers Gunner cannot see) and goes right back to thinking it. It’s the best of both worlds.

“Their positive outlook and attitudes on life really help us be better ourselves. I just feel so lucky to be able to always have different outlooks on everything that others may not realize,” she said.

Gunner reading braille on blue braille machine
Gunner ‘reads’ his Braille books. Gunner’s reading is feeling the Braille but making up his own stories as he goes along.

Their daily life is like other families — the boys get up and get ready for school, eat breakfast, brush their teeth. After school they have snack, play, watch cartoons, do homework.

“This might be the only thing ‘different,’” Ashlyn notes “Ace’s homework is reading, so Gunner will bring his Braille books to the couch and ‘read’ them, too. Gunner’s reading is feeling the Braille but making up his own stories as he goes, which are usually pretty creative and cute.”

Ashlyn’s best-of-both-worlds might as well extend to a third “world,” given the influence, support, and love she and her family have received from Axel’s “battle buddies” from his time in the Marines.

War Wounds Inside and Out

Axel served four years’ active duty (followed by four years’ inactive duty), being deployed twice to Afghanistan and once to Haiti on a relief mission.

He came home from Afghanistan suffering from severe injuries when his right shoulder took the brunt of his Humvee’s impact after it ran over an IED, an improvised explosive device.

Axel and Ashlyn married as soon as they could after his return home. He has a 90 percent disability rating for the injury and for Post-Traumatic Stress Disorder (PTSD). About two years ago, Alex’s service dog, Tucker, became part of the family, helping with his PTSD and bringing comfort when his anxiety is high. Tucker’s also great with the boys and may someday be joined by  a service dog for Gunner.

Axel wasn’t the only one to come home to the Lincoln family. The Marines came, too, and they are still part of it.

When Ashlyn was about to deliver her firstborn, her husband and his Marine friends were there. If the baby was a girl, she’d get to name her. If not, Daddy and his buddies had the honors.

“They gave me options. I had Achilles, Leonidas, Thor, Zeus – I was excited about that one.”

Achilles it was, or Ace, as they call their now first-grader.

It was Ashlyn’s turn to name their second boy, but she still wanted to honor their military family.

She explained that a gunner, sitting on top of a Humvee and rotating 360 degrees to protect its occupants, would throw himself on a badly injured compatriot as “an unwritten act of brotherhood.” The gunner in Axel’s case did not have to, but if Axel’s injuries were worse, he would have.

“So, to go along with the history of Ace’s name, we picked Gunner to name him.”

When she picked the name, she didn’t think much about looking up its meaning.

“Later on, after we got the diagnosis, I randomly decided to look up the meaning to find it meant ‘Battle Strong,’ which seems very appropriate on our adventure.”

You’re Overwhelmed and It’s OK

Life wasn’t always easy though. Dealing with Gunner’s diagnosis and coping with new realities was difficult. Here is the message she would like to extend to other mothers: “I was overwhelmed, and I was tired. I want to acknowledge that I know you’re overwhelmed and it’s OK.

“Take baby steps, know your local resources, and know that it’s not just something you’re going to conquer in one day.”

For support and to learn more about the LCA community, Ashlyn and a friend she met through an LCA Facebook group, traveled to Connecticut last fall to attend Hope in Focus (formally Sofia Sees Hope) LCA Family Conference, where she found a sense of community.

“It was fantastic,” she says. “There are families in other states and I’m not alone and here we are together. It’s just a moment where you can find comfort and know you’re not alone.”

Ashlyn said she does have a personal goal – one that she’s fulfilled right here.

“It’s hard to admit when your child is born and not perfect, and your husband has PTSD,” she said. “I hope that just by telling my story about LCA and veterans, that other families also can not feel so alone.”

The Road to Treatment: Understanding How Therapies Are Developed

Successful clinical drug trials are a cornerstone of U.S. Food and Drug Administration approval, such as with LUXTURNA™, a ground-breaking genetic therapy that helps restore vision in Leber congenital amaurosis (LCA) patients with a mutation in their RPE65 gene (LCA2).

But the FDA’s Dr. Wiley A. Chambers II cautioned LCA families and patients at a recent LCA Family Conference hosted by Hope in Focus (formally Sofia Sees Hope) to make sure their clinical trial of interest is real and not bogus.

Clinical trials drive research with the goal of finding treatments or cures that need FDA approval before commercial use. Twenty-three gene-based clinical trials targeting 13 genes are underway, including an LCA4 (AIPL1) trial, according to Foundation Fighting Blindness. More than 20 retinal cell therapy trials are in progress, and another 100 genes are under investigation in the preclinical pipeline, the Foundation reported.

Dr. Wiley Chambers II, MD headshot
Dr. Wiley Chambers II, MD

Chambers is supervisory medical officer in the Office of New Drugs in the FDA’s Center for Drug Evaluation and Research. The center’s mission is to assure that safe and effective drugs are available to the American people.

He was among three panelists who joined moderator Jeffrey Finman, PhD., of Jupiter Point Pharma Consulting, in exploring the development and approval of new treatments for rare diseases, including LCA. The panel was part of Sofia Sees Hope’s first-ever LCA Family Conference in Groton, CT, on Oct. 6.

Jennifer Hunt with Editas Medicine, a discovery-phase biotechnology company, and Tami Morehouse, a participant in the breakthrough LCA2 (RPE65) genetic therapy trial joined Chambers on the panel.

Not all trials are ‘real’

“Be aware of any trial where you’re charged for the drug or biologic product,” Chambers said. “If they’re charging you, watch out.”

He said every clinical trial is assigned an Investigational New Drug (IND) number. No number, no real trial.

Chambers sited the disastrous case of a 77-year-old woman who traveled to Georgia to have stem cells injected in her eyes in the hopes of a cure or at least help for her macular degeneration. The procedure entailed taking fat from the woman’s belly, separating stem cells that naturally occur in fat, and injecting them into her eyes to regenerate damaged tissue.

The procedure, not covered by insurance and not approved by the FDA, cost the woman $8,900. Within three months, her retinas – the eye’s layer of light-sensitive cells – had peeled away from the rest of her eyes. Her vision deteriorated to where she only could see hand movement before her eyes. She no longer could find her way on her own.

Risks vs. benefits

To fulfill its mission, the FDA monitors the drug development process during investigational stages, approves new drug products that are safe and efficacious, and monitors post-approval adverse events.

The FDA does not conduct clinical studies, choose which products a company will study, force companies to market products, or regulate the practice of medicine.

Approval depends on whether the benefits of a drug outweigh the risks.

“There is always a risk,” Chambers said. “If it does anything positive, it does something negative…It’s a balancing act.”

The factors weighed in this balancing act of forces and interests, clinically referred to as equipoise, consist of:

  • the potential benefit from the drug product;
  • the potential adverse event from drug;
  • the potential safety from not taking a new drug;
  • the potential loss from disease condition if not taking an effect therapy;
  • and missing out on an alternative therapy.

Exploring different routes to a cure

Panelist Jennifer Hunt, vice president of clinical operations for Editas Medicine, described the process of developing a medicine that corrects mutated genes through editing. Using her company’s investigational medicine, EDIT-101, as an example, she detailed the course for finding an ocular medicine to treat patients with LCA10 (CEP290). LCA10  is one of the leading causes of blindness beginning in the first years of life.

Editas is working on developing CRISPR-based medicines (pronounced crisper, and meaning Clustered Regularly Interspaced Short Palindromic Repeats). CRISPRs are specialized stretches of DNA; the protein Cas9, meaning CRISPR-associated, is an enzyme that acts like a pair of molecular scissors, capable of cutting strands of DNA, according to LiveScience. 

EDIT-101 is poised to be the first in vivo CRISPR medicine used in human trials. Before those clinical trials begin, researchers have been looking to answer key questions, such as, does editing restore protein expression in cells and what are the best clinical trials for patients?

Editas researchers also are conducting an ongoing natural history study with 40 patients, ages 3 and older. They are followed up with six times over the course of a year at seven sites – four in the United States and three in Europe – to characterize them, assess their vision changes and validate study endpoints.

Editas has stated it plans to file an Investigational New Drug (IND) application with the FDA in October. Once allowed by the FDA, Editas can begin clinical trials.

The FDA evaluates three study phases of a proposed new drug:

  • Phase 1 investigation of new drugs in humans is a phase of research to describe clinical trials that focus on the safety of a drug. They are usually conducted with healthy volunteers, and the goal is to determine the drug’s most frequent and serious adverse events and, often, how the drug is broken down and excreted by the body. These trials usually involve a small number of participants.
  • Phase 2 consists of research to describe clinical trials that gather preliminary data on whether the drug is effective in people who have a certain condition/disease. Participants receiving the drug may be compared to similar participants receiving a different treatment, usually an inactive substance, called a placebo, or a different drug. Safety continues to be evaluated, and short-term adverse events are studied.
  • Phase 3 research is to describe trials that gather more information about a drug’s safety and effectiveness by studying different populations and different dosages and by using the drug in combination with other drugs. These studies typically involve more participants.

The human side of a drug trial

The third panelist, Tami Morehouse, spoke to the safety and effectiveness of LUXTURNA, a medication developed by Spark Therapeutics that the FDA approved last December for commercial use. Tami made medical history at age 44 when she became the oldest person to participate in the successful Phase 1 LCA-RPE65 genetic therapy clinical trial in 2009.

Dr. Jean Bennett and her husband, Dr. Albert Maguire successfully used the treatment on Lancelot, a dog born blind with a mutation in his RPE65 gene, before testing the medication on humans.

Prior to the trial, Tami could see faces, but much of the time she saw dark, gray haze. She woke up every morning when her alarm clock went off, wondering, would this be the day she would wake up with no vision.

“I had no hope whatsoever,” she said.

Her husband, Michael, added, “That’s where she’d be today were it not for that trial.”

Michael learned of Dr. Bennett and her ongoing clinical trials at Children’s Hospital of Philadelphia (CHOP) from a radio broadcast.

The trials resulted in FDA approval of LUXTURNA, a gene therapy that enabled Tami to regain some of her vision.

“It was an incredible experience that was a long time coming,” she said.

Tami said she is “walking, living proof” of the treatment’s safety and effectiveness. She told her audience to keep in mind that older people, along with children and young adults, can benefit from the treatment.

“Don’t give up hope and keep looking.”

IRD Milestones: Reasons to Be Excited

1971 – Just those numbers in white on a black page appeared on the big screen.

That’s how Brian Mansfield, PhD., began his presentation to families and patients living with Leber congenital amaurosis at Hope in Focus (formally Sofia Sees Hope) LCA Family Conference on Saturday, Oct. 6, in Groton, CT.

The year on that otherwise empty page marked the founding of Foundation Fighting Blindness – a time when patients losing vision often heard, “Go home. Learn Braille. You are going to go blind.”

Mansfield’s audience at the conference was made up of people diagnosed with a variety of rare inherited retinal diseases, including LCA, their caregivers and relatives, and representatives of various bio-tech and pharmaceutical companies working in the IRD arena. It was Sofia Sees Hope’s first such conference.

Dr. Brian Mansfield headshot
Dr. Brian Mansfield

Mansfield is the foundation’s senior vice president of research. He brought his audience up to date with information about clinical trials for inherited retinal diseases (IRDs), the rich preclinical therapeutic pipeline, how the Foundation uses money to move treatments forward and what people can do to drive change for IRD treatments and therapies.

His presentation culminated in a projected slide filled with logos of bio-technology and pharmaceutical firms, many of which are in contact with the Foundation, and represent the ever-expanding research and development field to help people with visual impairment.

$725 million in funding

In its 47 years, Foundation Fighting Blindness has raised more than $725 million toward research, development and public health education. It partners with several dozen U.S. non-profit organizations, including Sofia Sees Hope.

Mansfield traced the rapid trajectory of identifying genes causing retinal disease, from the founding of the National Eye Institute in 1968 through the Foundation’s funding of the Berman-Gund Laboratory for the Study of Retina Degenerations in 1971. It included the 1989-90 work identifying the rhodopsin gene as the genetic cause of Retina Pigmentosa (RP), and conducting the first retinal disease gene therapy trials in 2007. And of course culminated in last December’s federal approval LUXTURNA™, a gene therapy that helps restore vision in people with LCA2 (RPE65).

For people affected by LCA, more than 80 percent can now get a clear genetic diagnosis. For IRDs, more than 260 retinal disease genes have been identified, and the overall success in providing a clear genetic diagnosis is 65 percent.

Mansfield said that 23 gene-based clinical trials targeting 13 different genes are currently underway, including the LCA4 (AIPL1) gene trial by MeiraGTx.

A promising pipeline

He said the gene therapy preclinical pipeline is promising, with 100 genes under investigation. Researchers also are conducting preclinical studies of optogenetic gene therapies, in which light is used to control genetically modified retinal cells.

ProQR is planning a pivotal Phase 2/3 gene patch clinical trial for the LCA10 (CEP290) gene that involves injecting a short DNA molecule to cover up the faulty instruction the gene otherwise gives to act incorrectly. Also, Mansfield said, Editas Medicine is close to gene editing clinical trials, called “cut and paste” because an enzyme seeks out and repairs the defective gene. Another editing therapy in the pipeline, called base editing, essentially backspaces over the mutation and types the correction over it.

Also underway are more than 20 retinal cell therapy trials in which lost cells are put back to replace missing cells or used as biofactories to produce factors that help stabilize the retinal cells.

To help propel research and trials, the Foundation funds Career Development Awards to attract and retain clinician researchers dedicated to retinal disease research. The Foundation also provides awards to the brightest minds in the field, individually or as a team, to drive research.

It also gave 16 years of preclinical research support amounting to $10 million toward Spark Therapeutics’ commercial gene therapy, LUXTURNA, the first directly administered gene therapy approved in the United States that targets a disease caused by mutations in a specific gene – LCA RPE65.

Mansfield talked about how Applied Genetics Technology Corp. (AGTC) leveraged an early Foundation investment to garner $265 million to develop genetic therapies, some of which are in clinical trials.

The Foundation also supports 20 centers – the International Clinical Consortium – that have standardized assessment protocols for clinical trials.

Patient involvement is key

To continue to attract industry interest, Mansfield detailed the Foundation’s My Retina Tracker registry, with its tagline “Track your vision. Drive the research.” It’s a free, secure, online patient registry that notifies registrants of clinical trials and gives researchers access to their disease data – but not their personal information – to advance studies on any number of research and therapy development efforts associated with IRDs.

The power of My Retina Tracker is optimized by registrants getting a genetic diagnosis. Sofia Sees Hope donated $65,000 to help people receive genetic testing and counseling.

Mansfield emphasized to his audience the vital importance of their knowledge, what they carry with them, and that patient input is critical to drug development.