Gene Variant Detail

Gene KIT
Variant D820Y
Impact List missense
Protein Effect gain of function
Gene Variant Descriptions KIT D820Y lies within the protein kinase domain of the Kit protein (UniProt.org). D820Yresuts in constitutive phosphorylation of Kit and is transforming in cell culture (PMID: 19035443, PMID: 11984533), and has also been identified as a secondary mutation associated with imatinib-resistance (PMID: 18488160).
Associated Drug Resistance Y

Filtering

  • Case insensitive filtering will display rows where any text in any cell matches the filter term
  • Simple literal full or partial string matches
  • Separate multiple filter terms with a spaces, order doesn't matter (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 a longer phrase which contains spaces "mtor c1483f"

Sorting

  • Generally, the default sort order for tables is set to be first column ascending, however, specific tables may set a different default sort order.
  • Click on any column header arrows to sort by that column
  • Hold down the Shift key and click multiple columns to sort by more than one column, be sure to set ascending or descending order for a given column, before moving on to the next column.

Transcript NM_000222
gDNA chr4:g.54733166G>T
cDNA c.2458G>T
Protein p.D820Y
Source Database RefSeq
Genome Build GRCh38/hg38
Transcript gDNA cDNA Protein Source Database Genome Build
XM_005265741 chr4:g.54733166G>T c.2458G>T p.D820Y RefSeq GRCh38/hg38
NM_000222 chr4:g.54733166G>T c.2458G>T p.D820Y RefSeq GRCh38/hg38

Filtering

  • Case insensitive filtering will display rows where any text in any cell matches the filter term
  • Simple literal full or partial string matches
  • Separate multiple filter terms with a spaces, order doesn't matter (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 a longer phrase which contains spaces "mtor c1483f"

Sorting

  • Generally, the default sort order for tables is set to be first column ascending, however, specific tables may set a different default sort order.
  • Click on any column header arrows to sort by that column
  • Hold down the Shift key and click multiple columns to sort by more than one column, be sure to set ascending or descending order for a given column, before moving on to the next column.

Molecular Profile Indication/Tumor Type Response Type Therapy Name Approval Status Evidence Type Efficacy Evidence References
KIT V555_L576del KIT D820G KIT D820Y gastrointestinal stromal tumor predicted - resistant Imatinib Case Reports/Case Series Actionable In a clinical study, KIT D820G and KIT D820Y were identified as secondary mutations in a patient with gastrointestinal stromal tumor harboring a primary KIT V555_L576del mutation, who developed resistance to Gleevec (imatinib) (PMID: 18488160). 18488160
KIT D820Y melanoma predicted - sensitive Sorafenib Case Reports/Case Series Actionable In a clinical case study, Nexavar (sorafenib) treatment resulted in stable disease with 27% reduction in target lesions at 4 weeks in a patient with anal melanoma and pulmonary metastases harboring KIT D820Y (PMID: 20372153). 20372153
KIT D820Y melanoma resistant Imatinib Preclinical - Cell culture Actionable In a preclinical study, Gleevec (imatinib mesylate) failed to inhibit MNK pathway activation and proliferation of melanoma cell lines harboring KIT D820Y in culture (PMID: 29035277). 29035277
KIT D820Y melanoma sensitive Dasatinib Preclinical - Cell culture Actionable In a preclinical study, Sprycel (dasatinib) inhibited MNK pathway activation and proliferation of melanoma cell lines harboring KIT D820Y in culture (PMID: 29035277). 29035277
KIT D820Y melanoma sensitive SEL201 Preclinical - Cell line xenograft Actionable In a preclinical study, SEL201 inhibited MNK pathway signaling and growth of melanoma cell lines harboring KIT D820Y in culture, and suppressed tumor metastasis in xenograft models (PMID: 29035277). 29035277
KIT Y553S KIT V556_T574del KIT D820Y gastrointestinal stromal tumor predicted - resistant Imatinib Case Reports/Case Series Actionable In a clinical study, KIT D820Y was identified as a secondary mutation in a patient with gastrointestinal stromal tumor harboring primary KIT V569_L576del and KIT Y553S mutations, who developed resistance to Gleevec (imatinib) (PMID: 18488160). 18488160
KIT D820Y KIT V559D Advanced Solid Tumor sensitive Nilotinib Preclinical - Cell culture Actionable In a preclinical study, Tasigna (nilotinib) inhibited proliferation of transformed cells expressing a KIT V559D/D820Y double mutation in culture, with increased potency compared to Sprycel (dasatinib) or Nexavar (sorafenib) (PMID: 17699867). 17699867
KIT D820Y KIT V559D Advanced Solid Tumor sensitive Sorafenib Preclinical - Cell culture Actionable In a preclinical study, Nexavar (sorafenib) inhibited proliferation of transformed cells expressing a KIT V559D/D820Y double mutation in culture (PMID: 17699867). 17699867
KIT D820Y KIT V559D Advanced Solid Tumor sensitive Dasatinib Preclinical - Cell culture Actionable In a preclinical study, Sprycel (dasatinib) inhibited proliferation of transformed cells expressing a KIT V559D/D820Y double mutation in culture (PMID: 17699867). 17699867