Gene Variant Detail

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Gene FGFR2
Variant H683L
Impact List missense
Protein Effect unknown
Gene Variant Descriptions FGFR2 H683L (corresponds to H682L in the canonical isoform) lies within the protein kinase domain of the FGFR2 protein (UniProt.org). H683L has been associated with resistance to Fgfr inhibitors in the context of an FGFR2 fusion in culture (PMID: 31109923), but has not been biochemically characterized and therefore, its effect on Fgfr2 protein function is unknown (PubMed, Jun 2020).
Associated Drug Resistance Y

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Transcript NM_001144913
gDNA chr10:g.121487366T>A
cDNA c.2048A>T
Protein p.H683L
Source Database RefSeq
Genome Build GRCh38/hg38
Transcript gDNA cDNA Protein Source Database Genome Build
NM_022970 chr10:g.121487366T>A c.2048A>T p.H683L RefSeq GRCh38/hg38
NM_001144913 chr10:g.121487366T>A c.2048A>T p.H683L RefSeq GRCh38/hg38

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  • Simple literal full or partial string matches
  • Separate multiple filter terms with a spaces, order doesn't matter (a b c and c b a are equivalent )
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  • Use quotes to match a longer phrase which contains spaces "mtor c1483f"

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Molecular Profile Indication/Tumor Type Response Type Therapy Name Approval Status Evidence Type Efficacy Evidence References
FGFR2 - INA FGFR2 M538I FGFR2 N550H FGFR2 N550T FGFR2 L618V FGFR2 H683L intrahepatic cholangiocarcinoma sensitive Futibatinib Case Reports/Case Series Actionable In a Phase I trial, a patient with intrahepatic cholangiocarcinoma, harboring an FGFR2-INA fusion with FGFR2 H683L, L618V, N550H, N550T, M538I mutations, responded to TAS-120 for 5.1 months before progressing due to acquired FGFR2 V565L and E566A mutations, detected in cell-free DNA (PMID: 31109923; NCT02052778). 31109923
FGFR2 - INA FGFR2 M538I FGFR2 N550H FGFR2 N550T FGFR2 L618V FGFR2 H683L intrahepatic cholangiocarcinoma resistant Debio 1347 Case Reports/Case Series Actionable In a clinical case study, a patient with intrahepatic cholangiocarcinoma harboring an FGFR2-INA fusion developed progressive disease after initial response to Debio 1347 for 11.4 months and FGFR2 H683L, L618V, N550H, N550T, M538I mutations were identified post-progression (PMID: 31109923). 31109923
FGFR2 fusion FGFR2 H683L intrahepatic cholangiocarcinoma sensitive Futibatinib Preclinical - Cell culture Actionable In a preclinical study, TAS-120 treatment of intrahepatic cholangiocarcinoma cells with an FGFR2 fusion in context with FGFR2 H683L were sensitive to treatment as demonstrated by decreased cell viability and decreased activation of downstream signaling (PMID: 31109923). 31109923
FGFR2 fusion FGFR2 H683L intrahepatic cholangiocarcinoma decreased response Infigratinib Preclinical - Cell culture Actionable In a preclinical study, Infigratinib (BGJ398) treatment of intrahepatic cholangiocarcinoma cells with an FGFR2 fusion in context with FGFR2 H683L had weakened sensitivity, as demonstrated by cell viability and downstream signaling assays (PMID: 31109923). 31109923
FGFR2 fusion FGFR2 H683L intrahepatic cholangiocarcinoma decreased response Debio 1347 Preclinical - Cell culture Actionable In a preclinical study, Debio 1347 treatment of intrahepatic cholangiocarcinoma cells with an FGFR2 fusion in context with FGFR2 H683L had weakened sensitivity, as demonstrated by cell viability and downstream signaling assays (PMID: 31109923). 31109923
Molecular Profile Indication/Tumor Type Response Type Therapy Name Approval Status Evidence Type Efficacy Evidence References
FGFR2 mutant endometrial cancer sensitive PRN1371 Preclinical - Cell culture Actionable In a preclinical study, PRN1371 inhibited proliferation of endometrial cancer cells harboring FGFR2 mutations in culture (AACR; Cancer Res 2016;76(14 Suppl):Abstract nr 1249). detail...
FGFR2 mutant Advanced Solid Tumor predicted - sensitive Debio 1347 Phase I Actionable In a Phase I trial, Debio 1347 treatment resulted in partial response in 10.5% (6/57) and stable disease in 28.1% (16/57) of patients with advanced solid tumors harboring genomic alterations of FGFR1/2/3, including amplifications, fusions, and mutations (PMID: 30745300; NCT01948297). 30745300
FGFR2 mutant cholangiocarcinoma sensitive Infigratinib Case Reports/Case Series Actionable In a Phase I trial, a patient with cholangiocarcinoma harboring an FGFR2 mutation demonstrated a decreased tumor burden when treated with Infigratinib (BGJ398) (PMID: 27870574). 27870574
FGFR2 mutant endometrial cancer sensitive Infigratinib Preclinical Actionable In a preclinical study, Infigratinib (BGJ398) inhibited the growth of FGFR2-mutated endometrial cancer cells in vitro and in xenograft models (PMID: 23443805). 23443805
FGFR2 mutant cholangiocarcinoma predicted - sensitive Erdafitinib Phase I Actionable In a Phase I trial, Balversa (erdafitinib) treatment resulted in an objective response rate of 27% (3/11) in patients with cholangiocarcinoma harboring FGFR genomic alterations, including 1 with FGFR2 mutation, 2 with FGFR3 mutations, and 8 with FGFR2 fusions (PMID: 31088831; NCT01703481). 31088831
FGFR2 mutant bladder urothelial carcinoma sensitive Erdafitinib FDA approved - Has 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 (PMID: 31340094; NCT02365597). detail... 31340094 detail...
FGFR2 mutant bladder urothelial carcinoma sensitive Erdafitinib Guideline Actionable Balversa (erdafitinib) is included in the guidelines for patients with advanced or metastatic urothelial carcinoma harboring Fgfr2 alterations after progression on platinum-based regimens (NCCN.org). detail...
FGFR2 mutant Advanced Solid Tumor sensitive Pemigatinib Preclinical - Cell culture Actionable In a preclinical study, a variety of cancer cell lines harboring mutations in FGFR1, FGFR2, and/or FGFR3 demonstrated sensitivity to Pemazyre (pemigatinib) in culture and in cell line xenograft models, resulting in inhibition of tumor growth (Cancer Res 2015;75(15 Suppl):Abstract nr 771). detail...
FGFR2 mutant transitional cell carcinoma sensitive Erdafitinib FDA approved - Has 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 (PMID: 31340094; NCT02365597). detail... 31340094 detail...
FGFR2 mutant transitional cell carcinoma sensitive Erdafitinib Guideline Actionable Balversa (erdafitinib) is included in the guidelines for patients with advanced or metastatic urothelial carcinoma harboring Fgfr2 alterations after progression on platinum-based regimens (NCCN.org). detail...