Molecular Profile Detail

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Profile Name FGFR3 G370C
Gene Variant Detail

FGFR3 G370C (gain of function)

Relevant Treatment Approaches FGFR Inhibitor (Pan) FGFR3 Inhibitor

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Molecular Profile Indication/Tumor Type Response Type Relevant Treatment Approaches Therapy Name Approval Status Evidence Type Efficacy Evidence References
FGFR3 G370C transitional cell carcinoma sensitive FGFR Inhibitor (Pan) Erdafitinib FDA approved - On Companion Diagnostic Actionable In a Phase II trial (BCL2001) that supported FDA approval, Balversa (erdafitinib) treatment resulted in an objective response rate of 40% (40/99, 3 complete response, 37 partial response) and a disease control rate of 80% in patients with metastatic or unresectable urothelial carcinoma harboring FGFR alterations and FGFR3 G370C is included in the companion diagnostic (PMID: 31340094; NCT02365597). detail... 31340094 detail...
FGFR3 G370C bladder urothelial carcinoma sensitive FGFR Inhibitor (Pan) Erdafitinib FDA approved - On Companion Diagnostic Actionable In a Phase II trial (BCL2001) that supported FDA approval, Balversa (erdafitinib) treatment resulted in an objective response rate of 40% (40/99, 3 complete response, 37 partial response) and a disease control rate of 80% in patients with metastatic or unresectable urothelial carcinoma harboring FGFR alterations and FGFR3 G370C is included in the companion diagnostic (PMID: 31340094; NCT02365597). detail... 31340094 detail...
FGFR3 G370C Advanced Solid Tumor predicted - resistant FGFR Inhibitor (Pan) Dovitinib Preclinical - Cell culture Actionable In a preclinical study, cells expressing FGFR3 G370C were resistant to treatment with Dovitinib (TKI258) in culture (PMID: 34272467). 34272467
FGFR3 G370C Advanced Solid Tumor predicted - resistant FGFR3 Inhibitor E7090 Preclinical - Cell culture Actionable In a preclinical study, cells expressing FGFR3 G370C were resistant to treatment with E7090 in culture (PMID: 34272467). 34272467
FGFR3 G370C Advanced Solid Tumor predicted - sensitive FGFR Inhibitor (Pan) Infigratinib Preclinical - Cell culture Actionable In a preclinical study, cells expressing FGFR3 G370C were sensitive to treatment with Truseltiq (infigratinib) in culture, demonstrating reduced cell viability (PMID: 34272467). 34272467
FGFR3 G370C urinary bladder cancer predicted - sensitive FGFR Inhibitor (Pan) Erdafitinib Case Reports/Case Series Actionable In a Phase II trial (THOR-2), Balversa (erdafitinib) improved median recurrence-free survival (not reached vs 11.6 mo, HR=0.28, p=0.0008) in patients with recurrent high risk non-muscle invasive bladder cancer harboring FGFR3 mutations such as S249C (n=31), R248C (n=4), G370C, (n=3) or Y373C (n=10) or FGFR2-BICC1 (n=1), FGFR3-BAIAP2L1 (n=1), or FGFR3-TACC3 (n=5) compared to intravesical chemotherapy (PMID: 37871701; NCT04172675). 37871701