Mouse xenograft models of lymphoma with WT or C481S mutant BTK
“Pirtobrutinib had anti-tumor activities in vitro against the human lymphoma cell lines tested (Ramos RA1 and TMD8), and in vivo in mouse xenograft models of lymphoma containing WT BTK or C481S mutant BTK.”
✓ VerifiedFDA multi-discipline review, p. 29Source ↗
Why that model
Not stated in public reviews
Not reported in the public reviews. Reviewers summarise selectively, so this usually means it wasn't discussed publicly, not that it wasn't studied.