Fabry Disease Patients Hope for FDA Approval of Drug Replagal

PHOTO: Jerry Walter, 56, is kept alive by a lifesaving orphan drug, but now he and other s are seeing their health decline because of a two-year drug shortage.

Hundreds of Fabry disease patients sickened because of a U.S. shortage of a drug that keeps them alive are hopeful they soon may get access to a medication previously available only overseas.

The biopharmaceutical company Shire announced that it will fast-track its drug, Replagal, for Food and Drug Administration (FDA) approval so American patients can have access to it.

The drug has been available for the last decade in 46 countries, and about 140 patients with the disease in the United States are receiving Replagal through an investigational clinical trial sanctioned by the FDA.

About 1,200 patients in the U.S. have Fabry disease, a rare genetic disorder that can wreak havoc on the kidneys and cause strokes and early death. The drug replaces a missing enzyme.

Until now, these patients have been taking another drug, Fabrazyme, but, since 2009, its manufacturer, Genzyme, has been unable to keep up production.

Jerry Walter, a semi-retired Army colonel from North Carolina and founder of the " target="external"> National Fabry Disease Foundation, received the first call from Shire this morning. Because of the Fabrazyme shortage, he has missed two full infusions of the twice-monthly medicine, and is now on only half doses.

As a result, he has begun to have kidney decline and more " target="external">arrhythmia.

"This is great news for Fabry community," said Walter, 56. "It provides treatment options for people with our disease and is a key step in ending the current prolonged drug shortage."

Sylvie Gregoire, president of Shire Human Genetic Therapies, said the new drug might be available to patients within six months. She made the call to Walter this morning.

"We know them personally in the rare-disease business," she said. "Our corporate hat is always off with these patients who motivate and inspire people to work in this business. Patients have been suffering, not knowing exactly when their next doses would come."

The Fabry foundation was one of the key players in getting Shire to apply for FDA approval, writing letters and contacting its the orphan drug development office.

Dozens of patients were also suing Genzyme for physical damages because of the drug's unavailability. They had also petitioned the FDA to impose a ban on the sale of the drug outside the U.S.

"The news was unexpected and a pleasant surprise," said their lawyer, C. Allen Black of Pittsburgh, who had previously called the shortage, "one of the worst avoidable tragedies in American medicine."

"This story should scare the hell out of everyone in America," Black added. "There's a lot of monopoly out there. It could have hit insulin production or chemotherapy."

With the news today, he told ABCNews.com, "Everybody is really excited about Replagal coming into the market."

Fabry disease is caused by the lack of an enzyme -- alpha-galactosidase-A -- that is required to metabolize lipids or fat-like substances in the body. Its symptoms include chronic gastrointestinal and cardiovascular problems, pains in the hands and feet, renal failure, and skin and eye complications, according to the National Institutes of Neurological Disorders and Stroke.

Fabrazyme utilizes an animal cell and Replagal a human one to replace the human enzyme, but both are considered safe and effective drugs.

Since 2003, the Fabrazyme, which costs about $200,000 a year, has kept Walter and others with the disease alive.

Both Fabrazyme and Replagal are sold overseas.

Genzyme's problems began in June 2009 when the only plant that manufactured the biological drug, in Allston, Mass., was shut down by the FDA because of virus contamination.

The company was fined $175 million and issued a consent decree to remediate. The French pharmaceutical company Sanofi-Aventis took over the company in April.

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