Molecular Profile Detail

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Profile Name FGFR3 Y373C
Gene Variant Detail

FGFR3 Y373C (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 Y373C myeloid neoplasm sensitive FGFR3 Inhibitor Debio 1347 Preclinical Actionable In a preclinical study, Debio 1347 inhibited proliferation of myeloma cell lines harboring FGFR3 Y373C in culture (PMID: 25169980). 25169980
FGFR3 Y373C myeloid neoplasm no benefit RO4987655 Preclinical - Cell culture Actionable In a preclinical study, myeloma cells harboring FGFR3 Y373C were not sensitive to RO4987655 in culture (PMID: 26438159). 26438159
FGFR3 Y373C myeloid neoplasm no benefit RO5126766 Preclinical - Cell culture Actionable In a preclinical study, myeloma cells harboring FGFR3 Y373C were not sensitive to RO5126766 in culture (PMID: 26438159). 26438159
FGFR3 Y373C myeloid neoplasm no benefit Selumetinib Preclinical - Cell culture Actionable In a preclinical study, myeloma cells harboring FGFR3 Y373C were not sensitive to Selumetinib (AZD-6244) in culture (PMID: 26438159). 26438159
FGFR3 Y373C multiple myeloma sensitive FGFR3 Inhibitor E7090 Preclinical - Cell culture Actionable In a preclinical study, a multiple myeloma cell line harboring FGFR3 Y373C (PMID: 19901323) demonstrated sensitivity to E7090 in culture, resulting in decreased cell viability (PMID: 27535969). 19901323 27535969
FGFR3 Y373C 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 Y373C is included in the companion diagnostic (PMID: 31340094; NCT02365597). detail... 31340094 detail...
FGFR3 Y373C 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 Y373C is included in the companion diagnostic (PMID: 31340094; NCT02365597). detail... 31340094 detail...
FGFR3 Y373C bladder urothelial carcinoma predicted - sensitive FGFR Inhibitor (Pan) Anlotinib + Sintilimab Case Reports/Case Series Actionable In a clinical case study, a patient with metastatic bladder urothelial cancer harboring FGFR3 Y373C, PIK3CA E542K and TP53 R213* who had previously progressed on combination treatment with Sintilimab (IBI308) and Abraxane (nab-paclitaxel), achieved a partial response after 3 cycles of combination treatment with Sintilimab (IBI308) and Anlotinib (AL-3818), and stable disease has been observed for over 11 months (PMID: 34109111). 34109111
FGFR3 Y373C Advanced Solid Tumor predicted - resistant FGFR Inhibitor (Pan) Dovitinib Preclinical - Cell culture Actionable In a preclinical study, cells expressing FGFR3 Y373C were resistant to treatment with Dovitinib (TKI258) in culture (PMID: 34272467). 34272467
FGFR3 Y373C Advanced Solid Tumor predicted - resistant FGFR3 Inhibitor E7090 Preclinical - Cell culture Actionable In a preclinical study, cells expressing FGFR3 Y373C were resistant to treatment with E7090 in culture (PMID: 34272467). 34272467
FGFR3 Y373C Advanced Solid Tumor predicted - sensitive FGFR Inhibitor (Pan) Infigratinib Preclinical - Cell culture Actionable In a preclinical study, cells expressing FGFR3 Y373C were sensitive to treatment with Truseltiq (infigratinib) in culture, demonstrating reduced cell viability (PMID: 34272467). 34272467
FGFR3 Y373C urinary bladder cancer predicted - sensitive FGFR3 Inhibitor Pemigatinib Case Reports/Case Series Actionable In a Phase II trial (FIGHT-207), Pemazyre (pemigatinib) treatment resulted in a partial response with a 50.8% decrease in target lesion and a progression-free survival of 6.2 months, and stable disease with a 30% decrease in target lesion and progression-free survival of 3.9 months in two patients with bladder cancer harboring FGFR3 Y373C (Cancer Res (2023) 83 (8_Supplement): CT016; NCT03822117). detail...