06Jun

As many as 30 million Americans may be living with a “rare disease,” officially defined as a condition affecting fewer than 200,000 people.

The Genetic and Rare Diseases Information Center says there are some 7,000 known rare diseases. Most are genetic. Only about 10% of all rare diseases have an approved treatment.

To hasten the development of drugs and therapies, the Food and Drug Administration in 2019 began an initiative to “to facilitate a cooperative approach and common standardized platforms to better characterize rare diseases, incorporate the patient’s perspective in clinical outcome assessment measures, and build clinical trial readiness in the pre-competitive space.”

Dubbed the Rare Disease Cures Accelerator, the initial focus of the program is building “an integrated database and analytics hub designed to promote the secure sharing of existing patient-level data and encourage the standardization of new data collection.”

A second key part was to award grants “develop standard core sets of clinical outcome assessments (COAs) and endpoints for specific disease indications.”

In May, the FDA asked for input from industry, rare disease organizations, patients and others regarding the “implementation and sustainment of global clinical trials networks.”

“As drug development for rare diseases can be challenging due to the small number of patients and limited understanding of the variability and progression of the diseases, the FDA is committed to developing bold new approaches to harness the infrastructure of global clinical trial networks,” said Anand Shah, FDA deputy commissioner for medical and scientific affairs.

A recent report on Regulatory Focus, the website of the Regulatory Affairs Professionals Society, said the stakeholders who commented “called for regulatory clarity, smart use of existing resources, and a move toward harmonized trial standards and assessments.”

Several comments addressed the need to ensure the quality of the data collected as well as reducing and eliminating some of the challenges unique to rare disease trials.

On behalf of the Biotechnology Innovation Organization, Danielle Friend, senior director of science and regulatory affairs, said the networks need to support “the collection of high-quality data that are endorsed by the agency for regulatory decision-making.” She said a rare disease network must recognize and address “heterogeneity in rare diseases, lack of harmonization among global regulators in rare disease regulatory policy, and current inconsistencies in clinical trial network operation.” The FDA plan also should consider combining rare diseases into a single trial when possible.

The National Organization for Rare Diseases echoed those comments, and, according to Regulatory Focus, said “Increased collaboration and a focus on increasing the speed and success of clinical trials can have the effect of ‘breaking down the silos of activity currently taking place in rare disease research.’”

Now the FDA will analyze the comments, incorporating them into a development plan for its trials networks program. No timeline was given for this phase of the program.

Photo by CDC on Unsplash

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Jun 6, 2023

Bioscience Rushing to Develop Virus Vaccines and Treatments

Big pharma and small bioscience are taking on the coronavirus, some becoming collaborators, some going it alone.

At least 21 companies are working on a vaccine or treatment, according to MarketWatch. A few of the larger firms are financing the development themselves or with partners. The larger share are being funded by the Department of Health and Human Services, and the National Institute of Allergy and Infectious Diseases (NIAID). Oslo-based Coalition for Epidemic Preparedness Innovations (CEPI) is funding others.

Several of the companies are testing the efficacy of their existing drugs to treat COVID-19 directly or as therapies to reduce the severity of the virus.

Gilead Sciences, for example, is conducting clinical trials of its antiviral drug Remdesivir. The drug was made available in the US to 1,700 COVID-19 patients on a compassionate use basis. It showed promise, but the sample size was too small to draw broad conclusions. Now, Gilead is conducting several clinical trials in the US and elsewhere. A randomized, controlled clinical trial is underway in Wuhan, China, where the coronavirus was first detected.

A vaccine under development by bioscience startup Heat Biologics in partnership with the University of Miami Miller School of Medicine is among the World Health Organization’s “draft landscape” of 41 candidate vaccines. A different vaccine based on DNA is in phase 1 clinical trial by Inovio Pharmaceuticals. Inovio was given a $5 million grant from the Bill & Melinda Gates Foundation to test a delivery device. It also received $9 million from the Coalition for Epidemic Preparedness Innovations.

Photo by Hakan Nural on Unsplash

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Jun 6, 2023

Llamas Could Help Prevent COVID Infections

Could a cure for COVID-19 come from llamas?.

Researchers are guarded in their optimism, but in a paper for the journal Cell, they report using a type of antibody called a nanobody produced by llamas to develop a treatment that prevents the virus from invading human cells.

Scientists have long known that llamas and other camelids not only produce antibodies like those made by humans but also create a much smaller, second type, called nanobodies.

Research on these nanobodies began several years ago, when scientists at University of Texas at Austin, the National Institutes of Health and Ghent University in Belgium began studying how they might be used to fight other coronaviruses.

From a llama named Winter, they harvested nanobodies she had produced in response to virus proteins they exposed her to. The results against SARS CoV-1 were effective. Since SARS CoV-2, the virus that causes COVID-19, is so similar, they used copies of those llama nanobodies to engineer an antibody to fight it.

Tested against the virus in laboratory cultures, it proved effective. Now they are testing it on rodents and primates. If it works there, the next step would be human trials.

“This is one of the first antibodies known to neutralize SARS-CoV-2,” said Jason McLellan, associate professor of molecular biosciences at UT Austin and co-senior author.

“Vaccines have to be given a month or two before infection to provide protection,” McLellan said. “With antibody therapies, you’re directly giving somebody the protective antibodies and so, immediately after treatment, they should be protected. The antibodies could also be used to treat somebody who is already sick to lessen the severity of the disease.”

Because nanobodies are so small – about a quarter the size of human antibodies – treatment could be delivered by inhalation.

Observed Daniel Wrapp, a graduate student in McLellan’s lab and a co-author of the paper, “That makes them potentially really interesting as a drug for a respiratory pathogen because you’re delivering it right to the site of infection.”   

Photo by Chris on Unsplash 

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