Kythera Biopharmaceuticals Inc. is slashing more than half its workforce, letting go 117 workers in the wake of its Oct. 1 acquisition by Dublin-based pharmaceutical company Allergan plc in an all-cash deal valued at roughly $2.1 billion.

Though current numbers were not available, as of June 30 the Westlake Village drug developer had 212 full-time employees, according to SEC filings.

Allergan is in the midst of a series of layoffs to increase profit margins, and over the past year, has cut over 1,000 jobs at its offices in Irvine as well as nearly 200 jobs in Goleta and Carlsbad, according to a California state filing.

The job cuts at Kythera will become effective Nov. 30.