By Maria Armental

 

U.S. health regulators have issued warning letters to two manufacturers of silicone gel-filled breast implants, citing failures to assess long-term safety and risks.

The Food and Drug Administration said Johnson and Johnson's (JNJ) Mentor Worldwide failed to address regulators' concerns about patient enrollment and data inconsistencies and that Sientra Inc. (SIEN) failed to address agency concerns about study progress.

Company representatives didn't immediately comment Tuesday afternoon.

"Post-approval requirements are critical to ensuring the safety and effectiveness of the medical products we regulate," FDA Commissioner Scott Gottlieb said in a statement.

 

Write to Maria Armental at maria.armental@wsj.com

 

(END) Dow Jones Newswires

March 19, 2019 16:58 ET (20:58 GMT)

Copyright (c) 2019 Dow Jones & Company, Inc.
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