FRISCO, Texas--(BUSINESS WIRE)--US Bioservices, a specialty pharmacy that is a part of AmerisourceBergen, today announced that it has been selected by Verastem OncologyTM to dispense COPIKTRA (duvelisib) capsules. The U.S. Food and Drug Administration (FDA) has approved COPIKTRA , an oral inhibitor of phosphoinositide 3-kinase (PI3K), and the first approved dual inhibitor of PI3K-delta and PI3K-gamma, for the treatment of adult patients with relapsed or refractory chronic lymphocytic leukemia/