- The Washington Times - Tuesday, January 17, 2006

CHICAGO (AP) — A hemophilia drug has been linked to deaths, strokes, heart attacks and other complications in patients given the medicine for other types of out-of-control bleeding, such as cerebral hemorrhages, say FDA researchers.

The medicine, NovoSeven, is a clotting drug that was introduced in 1999 after being approved by the Food and Drug Administration to stop bleeding in hemophiliacs. But it also has shown promise in treating cerebral hemorrhages, a potentially lethal type of stroke involving bleeding in the brain.

Most of the reported complications followed off-label use — that is, uses for which the drug was not specifically approved by the FDA. Off-label use is legal, but doctors have less information on possible side effects of such uses.

The report on the complications appears in today’s Journal of the American Medical Association.

The authors, including Dr. Kathryn O’Connell of the FDA’s Center for Biologics Evaluation and Research, called for rigorous safety studies of new uses for the drug, which is made by the Danish pharmaceutical company Novo Nordisk AS.

NovoSeven got fast-track approval as an orphan drug, which means the company received financial incentives to develop it because it treats a rare condition and was seen as having little potential for profit.

Novo Nordisk said that off-label use of NovoSeven has resulted in complications in older people and those with underlying heart disease and acute injuries. The risk for approved uses “is thought to be low,” the company said.

The company changed the warning in the package insert in October to include information on side effects in patients without hemophilia. Novo Nordisk said it is conducting studies on the safety of NovoSeven in such patients.

The researchers analyzed 431 reports to the FDA of adverse events, ranging from nausea to death, during the first five years of the drug’s use. Drug makers are required to report such side effects when they occur during research on the drug after its approval.

In 185 cases, the drug’s clotting action may have led to problems such as strokes and heart attacks, according to the study. Most of the problems followed off-label uses and occurred within 24 hours of the last dose.

When introduced, NovoSeven was thought to be helpful for the 10 percent of hemophilia patients who do not respond to standard treatments. The genetically engineered drug cost about $7,500 per dose.

Doctors have since found more uses for NovoSeven, including stemming bleeding from surgery, injuries or strokes. Use increased from 349 patients in 2000 to more than 4,500 in 2004.

“You’re seeing people grasping for what’s on the shelf now, hoping the evidence will follow,” said Dr. James Meschia, a neurologist at the Mayo Clinic in Jacksonville, Fla.

Dr. Meschia’s clinic has used the drug in life-threatening emergencies to try to stop bleeding in patients taking the anti-clotting drug warfarin.

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