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Gene FGFR2
Variant R664W
Impact List missense
Protein Effect unknown
Gene Variant Descriptions FGFR2 R664W lies within the protein kinase domain of the Fgfr2 protein (UniProt.org). R664W results in a growth advantage relative to wild-type Fgfr2 in a competition assay but transformation activity similar to wild-type in cultured cells (PMID: 34272467), and decreased autophosphorylation compared to wild-type Fgfr2 in an in vitro kinase assay (PMID: 28151998), and therefore, its effect on Fgfr2 protein function is unknown.
Associated Drug Resistance
Category Variants Paths

FGFR2 mutant FGFR2 R664W

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Transcript NM_000141.5
gDNA chr10:g.121487421G>A
cDNA c.1990C>T
Protein p.R664W
Source Database RefSeq
Genome Build GRCh38/hg38
Transcript gDNA cDNA Protein Source Database Genome Build
XM_024447891.1 chr10:g.121483722_121483724delCGAinsTGG c.1990_1992delCGAinsTGG p.R664W RefSeq GRCh38/hg38
NM_000141.5 chr10:g.121487421G>A c.1990C>T p.R664W RefSeq GRCh38/hg38
NM_000141.4 chr10:g.121487421G>A c.1990C>T p.R664W RefSeq GRCh38/hg38
NM_000141 chr10:g.121487421G>A c.1990C>T p.R664W RefSeq GRCh38/hg38
XM_006717712 chr10:g.121483722_121483724delTCGinsCCA c.1990_1992delCGAinsTGG p.R664W RefSeq GRCh38/hg38
XM_024447891.2 chr10:g.121483722_121483724delCGAinsTGG c.1990_1992delCGAinsTGG p.R664W RefSeq GRCh38/hg38

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  • Separate multiple filter terms with a space. Any order may be used (i. e. a b c and c b a are equivalent )
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  • Use quotes to match on a longer phrase with spaces (i.e. "mtor c1483f")

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Molecular Profile Indication/Tumor Type Response Type Therapy Name Approval Status Evidence Type Efficacy Evidence References
FGFR2 R664W Advanced Solid Tumor predicted - sensitive Fexagratinib Preclinical - Cell culture Actionable In a preclinical study, cells expressing FGFR2 R664W were sensitive to treatment with AZD4547 in culture, demonstrating reduced cell viability (PMID: 34272467). 34272467
FGFR2 R664W Advanced Solid Tumor predicted - sensitive Infigratinib Preclinical - Cell culture Actionable In a preclinical study, cells expressing FGFR2 R664W were sensitive to treatment with Truseltiq (infigratinib) in culture, demonstrating reduced cell viability (PMID: 34272467). 34272467
FGFR2 R664W Advanced Solid Tumor predicted - sensitive Erdafitinib Preclinical - Cell culture Actionable In a preclinical study, cells expressing FGFR2 R664W were sensitive to treatment with Balversa (erdafitinib) in culture, demonstrating reduced cell viability (PMID: 34272467). 34272467
FGFR2 R664W Advanced Solid Tumor predicted - sensitive Futibatinib Preclinical - Cell culture Actionable In a preclinical study, cells expressing FGFR2 R664W were sensitive to treatment with Lytgobi (futibatinib) in culture, demonstrating reduced cell viability (PMID: 34272467). 34272467
FGFR2 R664W Advanced Solid Tumor predicted - sensitive Pemigatinib Preclinical - Cell culture Actionable In a preclinical study, cells expressing FGFR2 R664W were sensitive to treatment with Pemazyre (pemigatinib) in culture, demonstrating reduced cell viability (PMID: 34272467). 34272467
FGFR2 R664W Advanced Solid Tumor predicted - sensitive E7090 Preclinical - Cell culture Actionable In a preclinical study, cells expressing FGFR2 R664W were sensitive to treatment with E7090 in culture, demonstrating reduced cell viability (PMID: 34272467). 34272467