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Gene FGFR2
Variant I288_E295delinsT
Impact List indel
Protein Effect unknown
Gene Variant Descriptions FGFR2 I288_E295delinsT results in deletion of eight amino acids in Ig-like C2-type domain 3 of the Fgfr2 protein from amino acids 288 to 295, combined with the insertion of a threonine (T) at the same location (UniProt.org). I288_E295delinsT has been identified in the scientific literature (PMID: 33926920), but has not been biochemically characterized and therefore, its effect on Fgfr2 protein function is unknown (PubMed, Nov 2024).
Associated Drug Resistance
Category Variants Paths

FGFR2 mutant FGFR2 exon7 FGFR2 exon 7 del FGFR2 I288_E295delinsT

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Transcript NM_000141.5
gDNA chr10:g.121520033_121520056delinsTGT
cDNA c.862_885delinsACA
Protein p.I288_E295delinsT
Source Database RefSeq
Genome Build GRCh38/hg38
Transcript gDNA cDNA Protein Source Database Genome Build
NM_001144913.1 chr10:g.121520033_121520056delinsTGT c.862_885delinsACA p.I288_E295delinsT RefSeq GRCh38/hg38
NM_000141.5 chr10:g.121520033_121520056delinsTGT c.862_885delinsACA p.I288_E295delinsT RefSeq GRCh38/hg38
NM_000141.4 chr10:g.121520033_121520056delinsTGT c.862_885delinsACA p.I288_E295delinsT RefSeq GRCh38/hg38
NM_001144917.2 chr10:g.121520033_121520056delinsTGT c.862_885delinsACA p.I288_E295delinsT RefSeq GRCh38/hg38
NM_001320658.1 chr10:g.121520033_121520056delinsTGT c.862_885delinsACA p.I288_E295delinsT RefSeq GRCh38/hg38
NM_001144913.1 chr10:g.121520033_121520056delinsTGT c.862_885delinsACA p.I288_E295delinsT RefSeq GRCh38/hg38
NM_022970.3 chr10:g.121520033_121520056delinsTGT c.862_885delinsACA p.I288_E295delinsT RefSeq GRCh38/hg38
NM_001320658.2 chr10:g.121520033_121520056delinsTGT c.862_885delinsACA p.I288_E295delinsT RefSeq GRCh38/hg38
NM_022970.4 chr10:g.121520033_121520056delinsTGT c.862_885delinsACA p.I288_E295delinsT RefSeq GRCh38/hg38
NM_001144917.1 chr10:g.121520033_121520056delinsTGT c.862_885delinsACA p.I288_E295delinsT RefSeq GRCh38/hg38

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Molecular Profile Indication/Tumor Type Response Type Therapy Name Approval Status Evidence Type Efficacy Evidence References
FGFR2 mutant breast cancer no benefit Sunitinib Case Reports/Case Series Actionable In a Phase II trial (TAPUR), Sutent (sunitinib) treatment did not meet the predetermined efficacy criteria in metastatic breast cancer patients with FGFR2 amplification (n=2), FGFR2 mutation (including FGFR2 rearrangement) (n=6), or both (n=2), resulting in no objective responses or stable disease of at least 16 weeks, median progression-free survival of 8 weeks, and a median overall survival of 22 weeks (PMID: 38354330; NCT02693535). 38354330
FGFR2 mutant endometrial cancer sensitive Infigratinib Preclinical Actionable In a preclinical study, Truseltiq (infigratinib) inhibited the growth of FGFR2-mutated endometrial cancer cells in vitro and in xenograft models (PMID: 23443805). 23443805
FGFR2 mutant intrahepatic cholangiocarcinoma predicted - sensitive Derazantinib Phase II Actionable In a Phase II trial (FIDES-01), Derazantinib (ARQ 087) treatment resulted in an objective response rate of 6.5%, a disease control rate of 58.1%, median progression-free survival of 8.3 months, and a median overall survival of 15.9 months in patients with intrahepatic cholangiocarcinoma harboring an FGFR2 mutation or amplification (Ann Oncol (2022) 33 (suppl_7): S19-S26; NCT03230318). detail...
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 Truseltiq (infigratinib) (PMID: 27870574). 27870574
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 Advanced Solid Tumor predicted - sensitive Zoligratinib 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 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...
FGFR2 mutant transitional cell carcinoma predicted - sensitive Cetrelimab + Erdafitinib Phase II Actionable In a Phase II trial, the combination of Balversa (erdafitinib) and Cetrelimab (JNJ-63723283) treatment resulted in an overall response rate of 54.5% (6 complete responses), disease control rate of 79.5%, median duration of response of 11.10 months, median progression-free survival of 10.97 months, and a 12-month overall survival of 68% in patients with metastatic urothelial carcinoma harboring FGFR mutations (J Clin Oncol 41, 2023 (suppl 16; abstr 4504); NCT03473743). detail...
FGFR2 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
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 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...