The U.S. Food and Drug Administration (FDA) is revising the way it communicates to drug companies when a marketing application cannot be approved as submitted.

Under new regulations that govern the drug approval process, FDA's Center for Drug Evaluation and Research (CDER) will no longer issue “approvable” or “not approvable” letters when a drug application is not approved. Instead, CDER will issue a “complete response” letter at the end of the review period to let a drug company know of the agency's decision on the application.

“These new regulations will help the FDA adopt a more consistent and neutral way of conveying information to a company when we cannot approve a drug application in its present form,” said Janet Woodcock, M.D., director of CDER. “Thorough and timely review of drug applications is a priority of the FDA, and these new processes will make our communications with sponsors of applications more consistent.”

Taking the place of “approvable” and “not approvable” letters, a complete response letter will be issued to let a company know that the review period for a drug is complete and that the application is not yet ready for approval. The letter will describe specific deficiencies and, when possible, will outline recommended actions the applicant might take to get the application ready for approval.

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