FLT3 K663R
Gene Variant Detail

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Gene FLT3
Variant K663R
Impact List missense
Protein Effect unknown
Gene Variant Descriptions FLT3 K663R lies within the protein kinase domain of the Flt3 protein (UniProt.org). K663R has been identified in the scientific literature (PMID: 39080258, PMID: 40196870), but has not been biochemically characterized and therefore, its effect on Flt3 protein function is unknown (PubMed, Sep 2025).
Associated Drug Resistance
Category Variants Paths

FLT3 mutant FLT3 exon16 FLT3 K663R

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Transcript NM_004119.3
gDNA chr13:g.28028243T>C
cDNA c.1988A>G
Protein p.K663R
Source Database RefSeq
Genome Build GRCh38/hg38
Transcript gDNA cDNA Protein Source Database Genome Build
NM_004119.3 chr13:g.28028243T>C c.1988A>G p.K663R RefSeq GRCh38/hg38

Filtering

  • Case insensitive filtering will display rows if any text in any cell matches the filter term
  • Use simple literal full or partial string matches
  • Separate multiple filter terms with a space. Any order may be used (i. e. a b c and c b a are equivalent )
  • Filtering will only apply to rows that are already loaded on the page. Filtering has no impact on query parameters.
  • 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
FLT3 K663R hematologic cancer sensitive Gilteritinib Preclinical - Cell culture Actionable In a preclinical study, Xospata (gilteritinib) treatment decreased viability in a cell line expressing FLT3 K663R in culture (PMID: 40196870). 40196870
FLT3 K663R hematologic cancer sensitive Quizartinib Preclinical - Cell culture Actionable In a preclinical study, Vanflyta (quizartinib) treatment decreased viability in a cell line expressing FLT3 K663R in culture (PMID: 40196870). 40196870
FLT3 K663R hematologic cancer sensitive Midostaurin Preclinical - Cell culture Actionable In a preclinical study, Rydapt (midostaurin) treatment decreased viability in a cell line expressing FLT3 K663R in culture (PMID: 40196870). 40196870