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Gene FLT3
Variant D835X
Impact List missense
Protein Effect unknown
Gene Variant Descriptions FLT3 D835X indicates any Flt3 missense mutation that results in the replacement of the aspartic acid (D) at amino acid 835 by a different amino acid. FLT3 codon 835 mutations are hotspot mutations that often result in constitutive phosphorylation of Flt3 and activation of downstream signaling (PMID: 11290608, PMID: 15256420).
Associated Drug Resistance
Category Variants Paths

FLT3 mutant FLT3 exon20 FLT3 D835X

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Transcript NM_004119.3
gDNA chr13:g.28018503_28018505
cDNA c.2503_2505
Protein p.D835
Source Database RefSeq
Genome Build GRCh38/hg38
Transcript gDNA cDNA Protein Source Database Genome Build
NM_004119 chr13:g.28018503_28018505 c.2503_2505 p.D835 RefSeq GRCh38/hg38
NM_004119.3 chr13:g.28018503_28018505 c.2503_2505 p.D835 RefSeq GRCh38/hg38
NM_004119.2 chr13:g.28018503_28018505 c.2503_2505 p.D835 RefSeq GRCh38/hg38

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Molecular Profile Indication/Tumor Type Response Type Therapy Name Approval Status Evidence Type Efficacy Evidence References
FLT3 D835X acute myeloid leukemia sensitive Crenolanib Phase I Actionable In a Phase I trial, Crenolanib treatment resulted in an overall survival (OS) of 185 days in AML patients harboring FLT3 D835X that received no prior therapy (J Clin Oncol 34, 2016 (suppl; abstr 7008)). detail...
FLT3 D835X acute myeloid leukemia sensitive Selinexor + Sorafenib Phase Ib/II Actionable In a Phase I/II trial, combination of Selinexor and Nexavar (sorafenib) treatment resulted in complete remission in 29% (4/14) and more than 50% blast reduction in 14% (2/14) of patients with acute myeloid leukemia harboring FLT3 ITD and/or D835 mutations (ASH, 59th Annual Meeting and Exposition, Dec 2017, Abstract 1344; NCT01607892). detail...
FLT3 D835X acute myeloid leukemia sensitive Cytarabine + Daunorubicin + Midostaurin FDA approved - On Companion Diagnostic Actionable In a Phase III trial that supported FDA approval, treatment with Rydapt (midostaurin), combined with Cytosar-U (cytarabine) and Daunorubicin, improved overall survival (74.7 mo vs 25.6 mo) in patients with FLT3-mutant (D835X and I836X) or FLT3-ITD (exon 14 insertions) acute myeloid leukemia compared to Cytosar-U (cytarabine) and Daunorubicin with placebo (PMID: 28644114). detail... 28644114 detail...
FLT3 D835X acute myeloid leukemia sensitive Gilteritinib FDA approved - On Companion Diagnostic Actionable In a Phase III trial (ADMIRAL) that supported FDA approval, Xospata (gilteritinib) improved median overall survival (9.3 vs 5.6 mo, HR. 0.64, p<0.001) compared to chemotherapy, resulted in superior median event-free survival (2.8 vs 0.7 mo, HR 0.79) and rate of complete remission with full or partial hematologic recovery (34.0% vs 15.3%) in patients with relapsed or refractory acute myeloid leukemia harboring a FLT3 internal tandem duplication (ITD), D835, or I836 mutation (PMID: 31665578; NCT02421939). detail... 31665578 detail...
FLT3 D835X myelodysplastic syndrome not applicable N/A Guideline Prognostic FLT3 D835 mutations are associated with poor prognosis in patients with myelodysplastic syndromes (NCCN.org). detail...
FLT3 D835X acute myeloid leukemia predicted - sensitive LAM-003 Preclinical - Patient cell culture Actionable In a preclinical study, patient-derived acute myeloid leukemia cells harboring FLT3 D835X demonstrated sensitivity to LAM-003 treatment in culture (PMID: 31751472). 31751472