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| Gene | KIT |
| Variant | Y823D |
| Impact List | missense |
| Protein Effect | gain of function |
| Gene Variant Descriptions | KIT Y823D lies within the protein kinase domain of the Kit protein (UniProt.org). Y823D confers a gain of function on Kit, as indicated by constitutive phosphorylation of Kit in cultured cells (PMID: 14695343, PMID: 20633291). |
| Associated Drug Resistance | |
| Category Variants Paths |
KIT mutant KIT act mut KIT Y823D KIT mutant KIT exon17 KIT Y823D |
| Transcript | NM_000222.3 |
| gDNA | chr4:g.54733175T>G |
| cDNA | c.2467T>G |
| Protein | p.Y823D |
| Source Database | RefSeq |
| Genome Build | GRCh38/hg38 |
| Transcript | gDNA | cDNA | Protein | Source Database | Genome Build |
|---|---|---|---|---|---|
| XM_005265741.1 | chr4:g.54733175T>G | c.2467T>G | p.Y823D | RefSeq | GRCh38/hg38 |
| NM_001385290.1 | chr4:g.54733175T>G | c.2467T>G | p.Y823D | RefSeq | GRCh38/hg38 |
| NM_000222.2 | chr4:g.54733175T>G | c.2467T>G | p.Y823D | RefSeq | GRCh38/hg38 |
| NM_000222 | chr4:g.54733175T>G | c.2467T>G | p.Y823D | RefSeq | GRCh38/hg38 |
| XM_005265741 | chr4:g.54733175T>G | c.2467T>G | p.Y823D | RefSeq | GRCh38/hg38 |
| NM_000222.3 | chr4:g.54733175T>G | c.2467T>G | p.Y823D | RefSeq | GRCh38/hg38 |
| Molecular Profile | Indication/Tumor Type | Response Type | Therapy Name | Approval Status | Evidence Type | Efficacy Evidence | References |
|---|---|---|---|---|---|---|---|
| KIT Y823D | Advanced Solid Tumor | sensitive | Motesanib Diphosphate | Preclinical - Cell culture | Actionable | In a preclinical study, Motesanib (AMG 706) inhibited KIT phosphorylation and growth of cells expressing KIT Y823D in culture (PMID: 20633291). | 20633291 |
| KIT Y823D | Advanced Solid Tumor | sensitive | Nintedanib | Preclinical - Cell culture | Actionable | In a preclinical study, Ofev (nintedanib) inhibited Kit autophosphorylation and proliferation of transformed cells expressing KIT Y823D in culture (PMID: 35194937). | 35194937 |
| KIT Y823D | melanoma | predicted - sensitive | Ripretinib | Case Reports/Case Series | Actionable | In a Phase I trial, Qinlock (ripretinib) treatment resulted in a complete response in a patient with metastatic melanoma harboring KIT Y823D (PMID: 35753087; NCT02571036). | 35753087 |
| KIT Y823D | Advanced Solid Tumor | predicted - sensitive | IDRX-42 | Preclinical - Biochemical | Actionable | In a preclinical study, IDRX-42 inhibited kinase activity of KIT Y823D in an vitro assay (PMID: 40018846). | 40018846 |