Eligibility required central confirmation of 2+ or 3+ MSLN expression by IHC in ≥50% of tumor cells....As of April 28th, 2021, 17 pts (12 MPM, 4 ovarian, 1 ChoCa) had received a single IV dose of gavo-cel at 5x107/m2....Two pts with ICI-refractory MPM and 1 with TP53-mutated platinum-resistant ovarian cancer had a PR (ORR 25%), including 1 MPM with a complete metabolic response by PET.