Updated

Terminally ill patients do not have a constitutional right to be treated with experimental drugs, even if they likely will be dead before the medicine is approved, a federal appeals court said Tuesday.

The ruling by the U.S. Court of Appeals for the District of Columbia Circuit overturned last year's decision by a smaller panel of the same court, which held that terminally ill patients may not be denied access to potentially lifesaving drugs.

The full court disagreed, saying in an 8-2 ruling that it would not create a constitutional right for patients to assume "any level of risk" without regard to medical testing.

"Terminally ill patients desperately need curative treatments," judge Thomas B. Griffith wrote for the majority. But "their deaths can certainly be hastened by the use of a potentially toxic drug with no proven therapeutic benefit."

Food and Drug Administration approval of drugs generally requires extensive testing that can involve years of trials and thousands of patients.

The Abigail Alliance for Better Access to Developmental Drugs and the Washington Legal Foundation sued the FDA in 2003, seeking access for terminally ill patients to drugs that have undergone preliminary safety testing in as few as 20 people but have yet to be approved.