PGP and lymphoma: Analysis of the 28 randomly assigned dogs with Pgp-overexpressing lymphoma (Pgp+), 10 (10/15, 67%) dogs treated with F14512 achieved an objective response (6 CR and 4 PR) at day 62 compared to 5 (5/13, 38%) dogs treated with etoposide phosphate (3 CR and 2 PR).