Finally, NSCLC PDX models demonstrating FGFR1 amplification and FGFR1 protein overexpression were sensitive to M6123. The unique molecular and immune features of tumours with high FGFR1 expression provide a rationale to stratify patients in future clinical trials of FGFR1 pathway-targeting agents.
Despite the poor prognosis and increasing incidence of this disease, the combination of pemetrexed with cisplatin currently remains the only available treatment option to patients. In summary, M6123 showed favorable anti-tumor activity in preclinical models of mesothelioma, in particular in combination with standard of care chemotherapy. Further preclinical testing is warranted to confirm a predictive biomarker signature for selection of mesothelioma patients that may benefit from addition of M6123.