Molecular Profile Detail

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Profile Name FGFR3 R248C
Gene Variant Detail

FGFR3 R248C (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 R248C Advanced Solid Tumor sensitive Vofatamab Preclinical - Cell culture Actionable In a preclinical study, Vofatamab (B-701) inhibited ligand-independent proliferation induced by FGFR3 R248C in cultured cells (PMID: 19381019). 19381019
FGFR3 R248C Advanced Solid Tumor sensitive FGFR Inhibitor (Pan) Infigratinib Preclinical - Cell culture Actionable In a preclinical study, Truseltiq (infigratinib) inhibited growth of transformed cells expressing FGFR3 R248C in culture (PMID: 23786770). 23786770
FGFR3 R248C Advanced Solid Tumor conflicting FGFR Inhibitor (Pan) Dovitinib Preclinical - Cell culture Actionable In a preclinical study, Dovitinib (TKI258) inhibited growth of transformed cells expressing FGFR3 R248C in culture (PMID: 23786770). 23786770
FGFR3 R248C Advanced Solid Tumor sensitive FGFR3 Inhibitor Pazopanib Preclinical - Cell culture Actionable In a preclinical study, Votrient (pazopanib) inhibited growth of transformed cells expressing FGFR3 R248C in culture (PMID: 23786770). 23786770
FGFR3 R248C 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 R248C is included in the companion diagnostic (PMID: 31340094; NCT02365597). 31340094 detail... detail...
FGFR3 R248C 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 R248C is included in the companion diagnostic (PMID: 31340094; NCT02365597). detail... 31340094 detail...
FGFR3 R248C Advanced Solid Tumor conflicting FGFR Inhibitor (Pan) Dovitinib Preclinical - Cell culture Actionable In a preclinical study, cells expressing FGFR3 R248C were resistant to treatment with Dovitinib (TKI258) in culture (PMID: 34272467). 34272467
FGFR3 R248C transitional cell carcinoma sensitive FGFR3 Inhibitor Dasatinib + PD173074 Preclinical - Cell culture Actionable In a preclinical study, the addition of Sprycel (dasatinib) to treatment with PD173074 enhanced inhibition of colony formation of a urothelial cancer cell line harboring FGFR3 R248C in culture (PMID: 32370101). 32370101
FGFR3 R248C transitional cell carcinoma sensitive FGFR Inhibitor (Pan) Dasatinib + Infigratinib Preclinical - Cell culture Actionable In a preclinical study, the addition of Sprycel (dasatinib) to treatment with Truseltiq (infigratinib) enhanced inhibition of colony formation and synergistically decreased viability in a urothelial cancer cell line harboring FGFR3 R248C in culture (PMID: 32370101). 32370101
FGFR3 R248C breast cancer predicted - sensitive FGFR Inhibitor (Pan) Erdafitinib Case Reports/Case Series Actionable In a Phase II trial (RAGNAR), treatment with Balversa (erdafitinib) resulted in a partial response with a duration of response of 12.75 months in a patient with breast cancer harboring FGFR3 R248C (PMID: 37541273; NCT04083976). 37541273
FGFR3 R248C 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