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Gene FLT3
Variant N676K
Impact List missense
Protein Effect gain of function
Gene Variant Descriptions FLT3 N676K lies within the protein kinase domain of the Flt3 protein (UniProt.org). N676K results in constitutive phosphorylation of Flt3, activation of Akt and Mapk signaling, leading to malignant hematological transformation in animal models (PMID: 26891877), and has been demonstrated to occur as a resistance mutation in the context of FLT3 internal tandem duplication (FLT3-ITD) mutations (PMID: 16150941).
Associated Drug Resistance Y
Category Variants Paths

FLT3 mutant FLT3 act mut FLT3 N676K

FLT3 mutant FLT3 exon16 FLT3 N676K

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Transcript NM_004119.3
gDNA chr13:g.28028203G>C
cDNA c.2028C>G
Protein p.N676K
Source Database RefSeq
Genome Build GRCh38/hg38
Transcript gDNA cDNA Protein Source Database Genome Build
NM_004119.3 chr13:g.28028203G>C c.2028C>G p.N676K RefSeq GRCh38/hg38
NM_004119.2 chr13:g.28028203G>C c.2028C>G p.N676K RefSeq GRCh38/hg38
NM_004119 chr13:g.28028203G>C c.2028C>G p.N676K 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 )
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  • 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 exon 14 ins FLT3 N676K acute myeloid leukemia predicted - resistant Midostaurin Case Reports/Case Series Actionable In a clinical case study, a patient with acute myeloid leukemia harboring a FLT3-ITD mutation progressed on Rydapt (midostaurin) after 288 days and was found to have acquired a FLT3 N676K mutation, and resistance was also confirmed in patient-derived cells in culture (PMID: 16150941). 16150941
FLT3 exon 14 ins FLT3 N676K acute myeloid leukemia predicted - resistant Pexidartinib Case Reports/Case Series Actionable In a Phase I/II trial, an acute myeloid leukemia patient harboring a FLT3-ITD was found to have acquired FLT3 N676K following relapse on Turalio (pexidartinib) treatment (PMID: 34103301; NCT01349049). 34103301
FLT3 exon 14 ins FLT3 N676K hematologic cancer sensitive FF-10101 Preclinical - Cell culture Actionable In a preclinical study, FF-10101 treatment inhibited growth of transformed hematologic cells expressing FLT3-ITD and FLT3 N676K in culture (PMID: 35395091). 35395091
FLT3 exon 14 ins FLT3 N676K hematologic cancer sensitive Gilteritinib Preclinical - Cell culture Actionable In a preclinical study, Xospata (gilteritinib) resulted in reduced cell viability in transformed cells expressing FLT3 ITD with FLT3 N676K in culture (PMID: 32040554). 32040554
FLT3 exon 14 ins FLT3 N676K hematologic cancer sensitive Gilteritinib Preclinical - Cell culture Actionable In a preclinical study, Xospata (gilteritinib) treatment inhibited growth of transformed hematologic cells expressing FLT3-ITD and FLT3 N676K in culture (PMID: 35395091). 35395091
FLT3 exon 14 ins FLT3 N676K hematologic cancer sensitive Crenolanib Preclinical - Cell culture Actionable In a preclinical study, Crenolanib (CP-868596) treatment inhibited growth of transformed hematologic cells expressing FLT3-ITD and FLT3 N676K in culture (PMID: 35395091). 35395091
FLT3 exon 14 ins FLT3 N676K hematologic cancer sensitive Quizartinib Preclinical - Cell culture Actionable In a preclinical study, Vanflyta (quizartinib) treatment inhibited growth of transformed hematologic cells expressing FLT3-ITD and FLT3 N676K in culture (PMID: 35395091). 35395091
FLT3 exon 14 ins FLT3 N676K hematologic cancer sensitive Midostaurin Preclinical - Cell culture Actionable In a preclinical study, Rydapt (midostaurin) treatment inhibited growth of transformed hematologic cells expressing FLT3-ITD and FLT3 N676K in culture (PMID: 35395091). 35395091