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

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

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.

Curing Blindness: The Road To Treatment With LUXTURNA™

This is the first in a series following the progress of Creed Pettit, a 9-year-old Florida third-grader, who is a candidate for the breakthrough gene-therapy drug called LUXTURNA™, approved as the first gene therapy for Leber congenital amaurosis (LCA), and as the first-ever genetic therapy in the United States for an inherited disease.

A birthday wish for 9-year-old Creed Pettit, diagnosed with LCA-RPE65, comes closer than ever to coming true today when the Florida boy and his mom meet with a surgeon to schedule treatment with LUXTURNA™, the just-approved, revolutionary gene therapy that corrects his specific gene mutation.

Creed smiling and holding up a piece of paper that writes, "My last birthday with LCA! #RPE65 #CREED — Creed, LCA2 *RPE65*

Creed had wished that his January 9th birthday would mark his very last with LCA-RPE65.

This third time might truly be the charm for Creed, as his mom, 41-year-old Sarah St. Pierre-Pettit of Mount Dora, Fla., twice tried to get her son, at ages 3 and 4, into clinical gene-therapy trials in Iowa. He was not approved for the trial because he could not perform steps required by the study, such as trying to navigate a maze.

Sarah learned a few days ago that her insurance company gave the go-ahead to schedule the surgery that costs $850,000.

“No more hurdles,” she wrote in an email. “I am a wreck of happy tears!!!”

Sarah and her son drove to Miami’s Bascom Palmer Eye Institute to meet today with Dr. Audina Berrocal to discuss the procedure and answer questions.

Brand new treatment

It was last October when decades of research culminated in a Food and Drug Administration advisory committee hearing in which the group recommended approval of LUXTURNA™, Spark Therapeutics’ breakthrough gene-therapy treatment.

“One of the doctors spoke about my son in the FDA approval process, which was just amazing,” Sarah said. “That day I knew Creed could be treated.”

Creed and his mom Sarah sitting on steps. — Creed and his mom, Sarah St. Pierre-Pettit of Mount Dora, Fla. Creed meets with his surgeon Feb. 19 to schedule his treatment with LUXTURNA to reverse his blindness caused by LCA-RPE65.

Hope in Focus (formally Sofia Sees Hope) founder and board chair Laura Manfre also counted among those speaking on behalf of this ground-breaking treatment, sharing with the committee a story of a woman whose vision greatly improved in the clinical trials and changed her life.

The FDA granted approval of the treatment in December, paving the way for patients like Creed with LCA-RPE65 to receive, LUXTURNA™, the first genetic therapy treatment for an inherited retinal disease (IRD), and the first genetic therapy in the United States created for any inherited disease.

RPE65 is a form of Leber congenital amaurosis in which the body can’t make a protein needed by the retina to convert light into vision-enabling signals, which are sent to the brain. This new therapy involves injecting under the retina a human-engineered virus containing copies of a normal gene, so cells can express the protein. LCA is a rare inherited retinal disease, and nearly 30 gene mutations are associated with it.

Creed said that after the surgery, he can’t wait to see a real rainbow and he can’t wait to throw his canes in the lake.

His mom, on speakerphone last week while driving to pick up a new batch of “Creed’s Cause” T-shirts that she designed, talked about her most recent effort to help pay for medical bills not covered by insurance, and for travel expenses.

At $20 apiece, Sarah sells them locally and through Facebook and Instagram. When she’s not making T-shirts, she’s an elementary school physical education assistant, and hosts trivia nights at a brewery owned by her sister and brother-in-law.

Creed is a third-grader at Mount Dora Christian Academy, a school that better serves his needs than the public system. MDCA is like family to Creed and his mom, hosting lots of fundraisers, including a January basketball event that raised $5,000. The Douglas G. Halliday Foundation of Orlando recently made a generous contribution, adding to the more than $100,000 raised from 5K races, a CrossFit event and contributions from many friends and people she doesn’t even know.

Missing milestones

In 2011, doctors diagnosed Creed with LCA; in the months following he received a genetic diagnosis of LCA-RPE65. Image: Toddler-aged Creed wearing patches over both eyes.

Sarah knew something was wrong with her baby shortly after he was born in January 2009.

“He missed all of the milestones. He would run into everything. He wasn’t walking. Instead, he did this weird Army crawl. He’d feel for his food and look up.

“Everything just said something’s not right.”

Then came the heartache of trying to figure out what was wrong. Doctors diagnosed Creed at 18 months old as autistic, and another said he had problems with his peripheral vision.

For the first year of Creed’s life, his mom thought he had colic because he would spend his days contentedly on a blanket outside, and at the end of the day when he went back into the house, he cried, all night.

An autism teacher advised Sarah to black out all the windows in the house, keep everything dark and not allow him to be in light, the exact opposite of what he needed.

She found the right advice from a woman specializing in depth perception and dyslexia. For the first time, and coming from a non-doctor, Sarah learned that her son probably was blind.

Creed with eye patches on his eyes, his mom is holding him — In 2011, doctors diagnosed Creed at 2 years and 8 months with LCA; in the months following he received a genetic diagnosis of LCA-RPE65. A week later, Sarah began her fundraising endeavors.

She also reached out for support that resulted in a team of therapists and specialists to address Creed’s movement, vision, speech, orientation, mobility and behavior.

Trying for a gene therapy trial

Sarah learned about RPE65 gene-therapy trials. She, her mother, Mary, and Creed traveled to Iowa twice for what turned out to be unsuccessful attempts to be part of the research.

Creed’s visual acuity is actually very good; when he has light, he can see. When he doesn’t have light, he can’t see anything. As Sarah says, “No light, no sight.”

He needed light and he got it, with his mom installing special bright lights all over the house.

“I’m positive they can see us in space,” she said of the lights in and around her home. Creed also has more light in school, including a light in his desk.

At school and in life, Creed has another light shining on him – his best buddy Michael, who bonded with him in first grade. He helps him be safe and gives Sarah updates about her son.

She said she can’t believe Michael’s maturity and sensitivity and believes he was put on this earth to help her son and others.

For Valentine’s Day, teachers filled bags with candy and sold them for $1 each, with proceeds going toward Creed’s expenses.

The words on the candy bag say, “Help Creed see how much we love him.”

Making Connections: Nightstar Therapeutics

I was so happy to recently speak with Samantha Vieira, Senior Director of Program Management of Nightstar Therapeutics. Nightstar is a leading clinical-stage gene therapy company focused on developing and commercializing novel, one-time treatments for patients suffering from rare inherited retinal diseases that would otherwise progress to blindness.

Based in London, they also have a small office in Lexington, Mass., and have several projects focused on retinal disease in their pipeline.

Their mission is to maintain and restore sight in patients with inherited retinal diseases and they shared information about four projects currently in their pipeline to treat these inherited retinal diseases: Choroideremia, X-linked Retinitis Pigmentosa (XLRP), Best Vitelliform Macular Dystrophy (MD) and Stargardt disease.

Choroideremia a degenerative, X-linked genetic retinal disorder primarily affecting males is expected to enter stage 3 clinical trials in early 2018. Very exciting news!

Table showing preclinical to phase 3 for Choroideremia, X-linked Retinitis Pigmentosa (XLRP), Best Vitelliform Macular Dystrophy (MD) and Stargardt disease

Their website includes helpful overviews of the four diseases for which they have projects, and some great videos as well. If you are interested in learning more about their research or upcoming clinical trials, there is also a sign up form for patients and families here.

As always, I’m encouraged to meet a company that is dedicated to finding treatments for rare inherited retinal diseases, and I look forward to hearing more about their work in 2018!

RPE65 Trial Patient Tami Morehouse: “There’s So Much To See”

Tami Morehouse made research history in the Leber congenital amaurosis world, and in the nation, when at age 44 she became the oldest person in a successful LCA-RPE65 genetic therapy trial, and the first patient to receive the retinal therapy in both eyes.

It’s been a long road for Tami, now 53 and living in the Cleveland area with her husband, Mike.

With no LCA diagnosis until her 30s, Tami made her way through life doing whatever she had to do. Sink or swim, she developed good coping and resource skills.

“I did what I had to do,” she said. “I had enough vision to make it work.”

No one noticed her vision problems until she was about a year old, when nighttime came, and she couldn’t see well at all. Attention focused on the idea she had night blindness.

It is difficult to detect vision clarity in small children, but her mom and dad knew something wasn’t quite right. Doctors picked up on it when she was 5, during an exam in which she recalled she was scared to death, screaming and crying, because they were poking around her eyes.

They determined she had issues with the clarity and clearness of vision, known as visual acuity.

She just adapted

From kindergarten into her 20s, she adapted to her surroundings and to her level of vision. She had difficulty seeing the chalkboard, reading a paper or deciphering bulletin-board postings.

“All of my teachers knew I had a hard time. I needed more light than the average kid. I remember the hallways of my elementary school were very, very dim and I had a hard time making my way around.”

Something her father said a long time ago helped her along the way. Her dad, who always called her Timmer, said, “‘Timmer, we all have our troubles, and if you want me to take you anywhere or do anything, just ask me.’ They just treated me like the typical kid I was not.”

Studying social work at Edinboro University in Pennsylvania, Tami scheduled classes in familiar and comfortable places. She avoided night classes, and when she couldn’t, she’d figure out how to get there, walking in better lit areas.

She realized that all her life she was a tweener – someone poised in-between.

“I was a tweener for forever because I did most things like everyone else did and there was that part that everyone else didn’t know.”

Since she was young, some sort of eye doctor tracked her through the years, but it wasn’t until she got her first social-work job and her then-boyfriend, now-husband, Mike, said they needed to explore potential options.

Finally, a diagnosis

Specialists diagnosed her under the retinitis-pigmentosa umbrella and told her she would lose her vision. They said it was good she already had her education and she should consider having her children now. “It was a heartbreaker day,” Tami recalled.

As she aged, so did her retina and its ability to function well. She went from reading storybooks to her three children to reading Dr. Seuss alphabet books. Some days she saw only hazy grays and browns and needed the brightest lights to see.

“It was really very scary. At that point, before the trial, I had more poor-vision days, than OK-vision days. Sometimes I was scared to death to set my alarm. What if tomorrow is the day I wake up and my vision doesn’t get better? What if I wake up and I can’t see?”

But one Sunday morning, Tami was in the house, and her husband was out in the garage. He suddenly barreled in. He had heard on the radio that a study was being done on children with LCA in Philadelphia by Dr. Jean Bennett and Dr. Albert McGuire. Mike called Bennett the next day, and the wheels turned fast. Bennett opened the study at Children’s Hospital of Philadelphia to older patients and invited Tami to take part in the Spark Therapeutics trial that would change her life.

RPE65 treatment, an improvement

In March 2009, doctors injected her left eye with healthy cells to help her retina perform more efficiently and regenerate healthy cells.

Several days later, she and her husband were having dinner in Philadelphia and Tami reached over and picked up her drink.

‘Do you know that you just reached over and picked that up, you didn’t feel for it?,’ Mike asked. ‘You just looked out and saw it and picked it up!’

The injection in her right eye in November 2010 brought more brightness and clarity, to the point where she could see some eye-chart letters.

In spring at a baseball practice for one of her sons, she noticed colors more than ever before.

“It was color and light and movement and the kind of stuff people take for granted every day, which may seem small if you have it. Once you lose those little things and then get them back, you realize how important they were. For me it was huge.”

Tami also got to see her daughter taunting the opposing pitcher on her softball team, as she frequently danced up and down the third-base line to almost always steal home.

‘Don’t give up’

Her only wish was that the therapy had been an option sooner, because as the years passed, her retinas kept deteriorating.

“If this was a life-threatening illness,” she quipped, “I would have died a long time ago.”

She advises anyone with LCA-RPE65 to investigate whether the therapy is an option, saying, “Time is of the essence. Don’t give up. There were a lot of us in that trial and we all seem to have different levels of benefits from procedures, whether you have a little vision or a lot of vision. I just value my vision so much, I just think everybody needs to act and respect whatever level you have and just be glad to have it. There’s so much to see. It’s an incredible gift.”

2017 Rare Disease & Orphan Products Breakthrough Summit

A two-day conference in Washington, D.C., earlier this month offered the opportunity for organizations such as Hope in Focus (formally Sofia Sees Hope) to discover the latest in the rare disease community, meet the nation’s top rare-disease professionals, and gather resources and ideas to help with the Leber congenital amaurosis (LCA) community.

More than 670 people attended the first day of the 2017 Rare Disease & Orphan Products Breakthrough Summit on Monday, Oct. 16.

The summit, presented by the National Organization for Rare Diseases (NORD) , included a range of topics, from the challenges of healthcare costs, to the ethical guidelines for patient organizations and themes of collaboration, urgency and transparency.

The summit’s second day featured presentations by the Food & Drug Administration’s leading Division Directors and discussions of improving the lives of patients with rare diseases.

Peter L. Saltonstall, President and CEO of NORD

The conference kicked off with a welcome by Peter L. Saltonstall, President and CEO of NORD, and Marshall L. Summar, M.D., Director of Children’s National Rare Disease Institute, Chief of Genetics and Metabolism at Children’s National Medical Center , and Chairman of NORD’s Board of Directors.

Key presentations included ensuring patient access, sustaining orphan drug development and availability, and reviewing achievements in rare disease drug, biologic and device development.

Mike Porath, founder and CEO of The Mighty and a parent of a child with a rare disease, gave a motivating, multi-faceted presentation in his keynote community address. His advice to families living with a rare disease included asking for help, embracing the moments and dreaming big to open doors for people with rare diseases.

Scott Gottlieb, M.D., Commissioner of the FDA, delivered the administration’s keynote address, talking about the group’s rare disease priorities, the rapid changes in rare disease product development and the basis of the Orphan Drug Act.