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Jul 19, 2010 8:10 PM by Dr. Anya Winslow

Pfizer halts testing of back pain drug tanezumab

Drugmaker Pfizer Inc. is stopping tests of an experimental drug for two types of pain at the request of federal regulators.

Pfizer was testing tanezumab in patients with chronic low back pain and with painful nerve damage from diabetes complications.

The move comes four weeks after Pfizer halted testing of the same drug in patients with arthritis because of safety problems.

That decision also was due to pressure from the U.S. Food and Drug Administration.

New York-based Pfizer says the FDA made the new request after further review of reports of harm to patients with osteoarthritis, a very common condition caused by wear and tear on the joints.

Pfizer said it will keep working with the FDA to decide what to do about other human testing of tanezumab.

 

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