Dual activating FGFR1 mutations in pediatric pilomyxoid astrocytoma
[Paper-level Aggregated] PMCID: PMC8077124
Evidence Type(s): Oncogenic, Functional, Prognostic
Justification: Oncogenic: The FGFR1 p.K656E mutation is described as a known hotspot mutation that is both activating and transforming, indicating its role in tumorigenesis. Functional: The FGFR1 p.V561M mutation is characterized as a gatekeeper mutation that imparts resistance to FGFR inhibitors, suggesting a functional impact on treatment response. Prognostic: The text mentions that pilomyxoid astrocytomas are characterized by shorter survival and high recurrence rates, indicating that the presence of these mutations may have implications for patient prognosis.
Gene→Variant (gene-first): FGFR1(2260):c.1681G>A FGFR1(2260):c.1966A>G FGFR1(2260):p.K656E FGFR1(2260):p.V561M IDH1(3417):p.R132H BRAF(673):p.V600E
Genes: FGFR1(2260) IDH1(3417) BRAF(673)
Variants: c.1681G>A c.1966A>G p.K656E p.V561M p.R132H p.V600E