KYTHERA Biopharmaceuticals, Inc. (NASDAQ: KYTH) announced today that the U.S. Food and Drug Administration’s (FDA) Dermatologic and Ophthalmic Drugs Advisory Committee has voted unanimously to support the approval of ATX-101 (deoxycholic acid) injection for improvement in the appearance of moderate to severe convexity or fullness associated with submental fat in adults, which is often referred to as a double chin.