Gene Variant Detail

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Gene FGFR1
Variant I544V
Impact List missense
Protein Effect gain of function - predicted
Gene Variant Descriptions FGFR1 I544V lies within the protein kinase domain of the Fgfr1 protein (UniProt.org). I544V demonstrates increased kinase activity compared to wild-type Fgfr1 in an in vitro assay (PMID: 28166054), and therefore, is predicted to lead to a gain of Fgfr1 protein function.
Associated Drug Resistance
Category Variants Paths

FGFR1 mutant FGFR1 act mut FGFR1 I544V

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Transcript NM_023110.3
gDNA chr8:g.38417339T>C
cDNA c.1630A>G
Protein p.I544V
Source Database RefSeq
Genome Build GRCh38/hg38
Transcript gDNA cDNA Protein Source Database Genome Build
NM_023110 chr8:g.38417339T>C c.1630A>G p.I544V RefSeq GRCh38/hg38
NM_023110.2 chr8:g.38417339T>C c.1630A>G p.I544V RefSeq GRCh38/hg38
XM_006716303.3 chr8:g.38417339T>C c.1630A>G p.I544V RefSeq GRCh38/hg38
XM_017013221.1 chr8:g.38417339T>C c.1630A>G p.I544V RefSeq GRCh38/hg38
XM_006716304.2 chr8:g.38417339T>C c.1630A>G p.I544V RefSeq GRCh38/hg38
NM_023110.3 chr8:g.38417339T>C c.1630A>G p.I544V RefSeq GRCh38/hg38
XM_006716304 chr8:g.38417339T>C c.1630A>G p.I544V RefSeq GRCh38/hg38
XM_017013221.2 chr8:g.38417339T>C c.1630A>G p.I544V RefSeq GRCh38/hg38
XM_006716303.4 chr8:g.38417339T>C c.1630A>G p.I544V RefSeq GRCh38/hg38
XM_017013221 chr8:g.38417339T>C c.1630A>G p.I544V RefSeq GRCh38/hg38
XM_006716304.1 chr8:g.38417339T>C c.1630A>G p.I544V RefSeq GRCh38/hg38
XM_006716303 chr8:g.38417339T>C c.1630A>G p.I544V RefSeq GRCh38/hg38

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Molecular Profile Indication/Tumor Type Response Type Therapy Name Approval Status Evidence Type Efficacy Evidence References
FGFR1 act mut Advanced Solid Tumor sensitive Ponatinib Preclinical Actionable In a preclinical study, Iclusig (ponatinib) inhibited receptor phosphorylation and cell growth in transformed cells expressing constitutively active FGFR1 in culture (PMID: 22238366). 22238366
FGFR1 act mut central nervous system benign neoplasm predicted - sensitive Erdafitinib Case Reports/Case Series Actionable In a Phase II trial (MATCH), Balversa (erdafitinib) was tolerated and resulted in a partial response (PR) in 10% (2/20) and stable disease (SD) in 30% (6/20) of heavily pre-treated pediatric patients with low-grade gliomas or glioneuronal tumors harboring activating mutations in FGFR1 (n=16), FGFR2 (n=1), FGFR4 (n=1), or FGFR1 fusions (n=2), with a 6-mo overall survival rate of 89.7%, 2 PR and 4 SD were observed in patients with FGFR1 mutations (J Clin Oncol 41, 2023 (suppl 16; abstr 10007); NCT03210714). detail...
FGFR1 act mut Advanced Solid Tumor decreased response Cediranib Preclinical Actionable In a preclinical study, transformed cells expressing constitutively active FGFR1 demonstrated reduced sensitivity to inhibition of receptor phosphorylation and cell proliferation by Cediranib (AZD-2171) in culture, when compared to other tyrosine kinase inhibitors (PMID: 22238366). 22238366
FGFR1 act mut Advanced Solid Tumor decreased response Nintedanib Preclinical Actionable In a preclinical study, transformed cells expressing constitutively active FGFR1 demonstrated reduced sensitivity to Ofev (Nintedanib) in culture, when compared to other tyrosine kinase inhibitors (PMID: 22238366). 22238366
FGFR1 act mut Advanced Solid Tumor predicted - sensitive Erdafitinib Phase I Actionable In a Phase I trial, Balversa (erdafitinib) treatment resulted in stable disease in 70% (16/23) and partial response in 22% (5/23) of patients with advanced solid tumors harboring FGFR 1-4 activating mutations (including amplifications, mutations and translocations), while no antitumor activity was observed in patients with unknown or no known changes in FGFR (PMID: 26324363; NCT01703481). 26324363
FGFR1 act mut Advanced Solid Tumor predicted - sensitive Erdafitinib Phase II Actionable In a Phase II trial (RAGNAR), Balversa (erdafitinib) treatment resulted in an objective response rate of 29.5% (64/217, 6 complete and 58 partial responses), a disease control rate of 74%, clinical benefit rate of 46%, a median duration of response of 6.9 months, median progression-free survival of 4.2 months, and median overall survival of 10.7 months in patients with advanced solid tumors harboring FGFR1, FGFR2, or FGFR3 mutations or fusions (PMID: 37541273; NCT04083976). 37541273
FGFR1 act mut Advanced Solid Tumor sensitive Dovitinib Preclinical Actionable In a preclinical study, Dovitinib (TKI258) inhibited receptor phosphorylation and cell proliferation in transformed cells expressing constitutively active FGFR1 in culture (PMID: 22238366). 22238366
FGFR1 act mut Advanced Solid Tumor sensitive Debio 1347 Phase I Actionable In a Phase I trial, Debio 1347 (CH5183284) dosing regimen has been determined in solid tumor patients with activating FGFR1 alterations (JCO, Vol 33, No 15_suppl (May 20 Supplement), 2015: 2540). detail...
FGFR1 act mut breast cancer sensitive FIIN-1 Preclinical Actionable In a preclinical study, FIIN-1 inhibited Fgfr1 activation-induced proliferation and transformation of human breast epithelial cell lines in culture (PMID: 20338520). 20338520
FGFR1 act mut Advanced Solid Tumor no benefit Brivanib Preclinical Actionable In a preclinical study, Brivanib (BMS-540215) did not inhibit receptor phosphorylation and cell proliferation in transformed cells expressing constitutively active FGFR1 in culture (PMID: 22238366). 22238366
FGFR1 act mut low grade glioma predicted - sensitive Erdafitinib Case Reports/Case Series Actionable In a Phase II trial (MATCH), Balversa (erdafitinib) was tolerated and resulted in a partial response (PR) in 10% (2/20) and stable disease (SD) in 30% (6/20) of heavily pre-treated pediatric patients with low-grade gliomas or glioneuronal tumors harboring activating mutations in FGFR1 (n=16), FGFR2 (n=1), FGFR4 (n=1), or FGFR1 fusions (n=2), with a 6-mo overall survival rate of 89.7%, 2 PR and 4 SD were observed in patients with FGFR1 mutations ( (J Clin Oncol 41, 2023 (suppl 16; abstr 10007); NCT03210714). detail...
FGFR1 mutant Advanced Solid Tumor sensitive Pemigatinib Preclinical - Cell line xenograft 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...
FGFR1 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
FGFR1 mutant Advanced Solid Tumor predicted - sensitive Erdafitinib Case Reports/Case Series Actionable In a Phase II trial (MATCH), Balversa (erdafitinib) treatment resulted in an objective response rate of 16% (4/25), median progression-free survival of 3.6 months, and median overall survival of 11.0 months in patients with advanced solid tumors harboring FGFR1, FGFR2, or FGFR3 mutations or fusions (PMID: 38603650; NCT02465060). 38603650
FGFR1 mutant Advanced Solid Tumor predicted - sensitive ICP-192 Phase I Actionable In a Phase I trial, ICP-192 (gunagratinib) was well-tolerated, and resulted in an overall response rate or 33.3% (4/12, 1 complete response, 3 partial response) and a disease control rate of 91.7% (11/12) in patients with advanced solid tumors harboring FGF/FGFR gene aberrations (J Clin Oncol 39, 2021 (suppl 15; abstr 4092); NCT03758664). detail...
FGFR1 mutant transitional cell carcinoma predicted - sensitive Erdafitinib Phase II Actionable In a Phase II trial, Balversa (erdafitinib) treatment resulted in an objective response rate of 42% (40/96, 3 complete response, 37 partial response) and a disease control rate of 80% in patients with metastatic or unresectable urothelial carcinoma harboring FGFR alterations (J Clin Oncol 36, 2018 (suppl; abstr 4503); NCT02365597). detail...