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| Gene | JAK1 |
| Variant | R629_S632delinsSA |
| Impact List | indel |
| Protein Effect | gain of function |
| Gene Variant Descriptions | JAK1 R629_S632delinsSA results in a deletion of four amino acids in the protein kinase domain 1 of the Jak1 protein from amino acids 629 to 632, combined with the insertion of a serine (S) and an alanine (A) at the same site (UniProt.org). R629_S632delinsSA confers a gain of function to the Jak1 protein as demonstrated by increased Stat3 and Stat5 phosphorylation in cultured cells, and is transforming in culture (PMID: 34496019). |
| Associated Drug Resistance | |
| Category Variants Paths |
JAK1 mutant JAK1 act mut JAK1 R629_S632delinsSA |
| Transcript | NM_002227.4 |
| gDNA | chr1:g.64847535_64847546delinsTGCGCT |
| cDNA | c.1885_1896delinsAGCGCA |
| Protein | p.R629_S632delinsSA |
| Source Database | RefSeq |
| Genome Build | GRCh38/hg38 |
| Transcript | gDNA | cDNA | Protein | Source Database | Genome Build |
|---|---|---|---|---|---|
| NM_001320923.2 | chr1:g.64847535_64847546delinsTGCGCT | c.1885_1896delinsAGCGCA | p.R629_S632delinsSA | RefSeq | GRCh38/hg38 |
| NM_001321853.1 | chr1:g.64847535_64847546delinsTGCGCT | c.1885_1896delinsAGCGCA | p.R629_S632delinsSA | RefSeq | GRCh38/hg38 |
| NM_001321853.2 | chr1:g.64847535_64847546delinsTGCGCT | c.1885_1896delinsAGCGCA | p.R629_S632delinsSA | RefSeq | GRCh38/hg38 |
| NM_001321855.2 | chr1:g.64847535_64847546delinsTGCGCT | c.1885_1896delinsAGCGCA | p.R629_S632delinsSA | RefSeq | GRCh38/hg38 |
| XM_047419674.1 | chr1:g.64847535_64847546delinsTGCGCT | c.1885_1896delinsAGCGCA | p.R629_S632delinsSA | RefSeq | GRCh38/hg38 |
| NM_001321854.1 | chr1:g.64847535_64847546delinsTGCGCT | c.1885_1896delinsAGCGCA | p.R629_S632delinsSA | RefSeq | GRCh38/hg38 |
| NM_001321856.2 | chr1:g.64847535_64847546delinsTGCGCT | c.1885_1896delinsAGCGCA | p.R629_S632delinsSA | RefSeq | GRCh38/hg38 |
| NM_002227.3 | chr1:g.64847535_64847546delinsTGCGCT | c.1885_1896delinsAGCGCA | p.R629_S632delinsSA | RefSeq | GRCh38/hg38 |
| NM_001321854.2 | chr1:g.64847535_64847546delinsTGCGCT | c.1885_1896delinsAGCGCA | p.R629_S632delinsSA | RefSeq | GRCh38/hg38 |
| NM_001321852.2 | chr1:g.64847535_64847546delinsTGCGCT | c.1885_1896delinsAGCGCA | p.R629_S632delinsSA | RefSeq | GRCh38/hg38 |
| NM_001320923.1 | chr1:g.64847535_64847546delinsTGCGCT | c.1885_1896delinsAGCGCA | p.R629_S632delinsSA | RefSeq | GRCh38/hg38 |
| NM_001321856.1 | chr1:g.64847535_64847546delinsTGCGCT | c.1885_1896delinsAGCGCA | p.R629_S632delinsSA | RefSeq | GRCh38/hg38 |
| NM_002227.4 | chr1:g.64847535_64847546delinsTGCGCT | c.1885_1896delinsAGCGCA | p.R629_S632delinsSA | RefSeq | GRCh38/hg38 |
| NM_001321855.1 | chr1:g.64847535_64847546delinsTGCGCT | c.1885_1896delinsAGCGCA | p.R629_S632delinsSA | RefSeq | GRCh38/hg38 |
| XM_047419675.1 | chr1:g.64847535_64847546delinsTGCGCT | c.1885_1896delinsAGCGCA | p.R629_S632delinsSA | RefSeq | GRCh38/hg38 |
| NM_001321852.1 | chr1:g.64847535_64847546delinsTGCGCT | c.1885_1896delinsAGCGCA | p.R629_S632delinsSA | RefSeq | GRCh38/hg38 |
| Molecular Profile | Indication/Tumor Type | Response Type | Therapy Name | Approval Status | Evidence Type | Efficacy Evidence | References |
|---|---|---|---|---|---|---|---|
| JAK1 R629_S632delinsSA | hematologic cancer | sensitive | Tofacitinib | Preclinical - Cell culture | Actionable | In a preclinical study, Xeljanz (tofacitinib) treatment resulted in decreased viability of transformed cells expressing JAK1 R629_S632delinsSA in culture (PMID: 34496019). | 34496019 |
| JAK1 R629_S632delinsSA | hematologic cancer | sensitive | Ruxolitinib | Preclinical - Cell culture | Actionable | In a preclinical study, Jakafi (ruxolitinib) treatment inhibited Stat5 signaling and decreased viability of transformed cells expressing JAK1 R629_S632delinsSA in culture (PMID: 34496019). | 34496019 |
| JAK1 R629_S632delinsSA | hypereosinophilic syndrome | predicted - resistant | Ruxolitinib | Preclinical - Patient cell culture | Actionable | In a preclinical study, blood and marrow cells derived from a patient with hypereosinophilia harboring JAK1 R629_S632delinsSA were resistant to Jakafi (ruxolitinib) treatment in culture (PMID: 34496019). | 34496019 |
| JAK1 R629_S632delinsSA | hypereosinophilic syndrome | predicted - sensitive | Tofacitinib | Preclinical - Patient cell culture | Actionable | In a preclinical study, Xeljanz (tofacitinib) treatment resulted in decreased viability of blood and marrow cells derived from a patient with hypereosinophilia harboring JAK1 R629_S632delinsSA in culture (PMID: 34496019). | 34496019 |