“Cell lines such as NIH/3T3 cells, a murine fibroblast cell line, or Ba/F3 cells, a murine pro-B cell line, were engineered to express ROS1 mutants/fusion proteins for xenograft studies.”
✓ VerifiedFDA multi-discipline review, p. 41Source ↗
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.
Reviewer's view of the efficacy data
Antitumor activity shown only in subcutaneous xenografts; no NSCLC or patient-derived NSCLC cell lines
“Evaluation of antitumor activity was conducted in subcutaneous xenograft models and did not include NSCLC cell lines or patient derived NSCLC cell lines.”
✓ VerifiedFDA multi-discipline review, p. 41Source ↗