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| Gene | JAK2 |
| Variant | S523L |
| Impact List | missense |
| Protein Effect | gain of function |
| Gene Variant Descriptions | JAK2 S523L lies within a linker region of the Jak2 protein (PMID: 29685781). S523L results in impaired phosphorylation of Jak2 at S523, a site that negatively regulates Jak2 activity, and demonstrates increased cytokine-independent phosphorylation of Jak2 and Stat5 and cytokine-independent growth in cell culture (PMID: 32956452). |
| Associated Drug Resistance | |
| Category Variants Paths |
JAK2 mutant JAK2 act mut JAK2 S523L JAK2 mutant JAK2 exon12 JAK2 S523L |
| Transcript | NM_004972.4 |
| gDNA | chr9:g.5069979C>T |
| cDNA | c.1568C>T |
| Protein | p.S523L |
| Source Database | RefSeq |
| Genome Build | GRCh38/hg38 |
| Transcript | gDNA | cDNA | Protein | Source Database | Genome Build |
|---|---|---|---|---|---|
| NM_001322195.1 | chr9:g.5069979C>T | c.1568C>T | p.S523L | RefSeq | GRCh38/hg38 |
| NM_004972.4 | chr9:g.5069979C>T | c.1568C>T | p.S523L | RefSeq | GRCh38/hg38 |
| NM_001322194.1 | chr9:g.5069979C>T | c.1568C>T | p.S523L | RefSeq | GRCh38/hg38 |
| NM_004972.3 | chr9:g.5069979C>T | c.1568C>T | p.S523L | RefSeq | GRCh38/hg38 |
| NM_001322195.2 | chr9:g.5069979C>T | c.1568C>T | p.S523L | RefSeq | GRCh38/hg38 |
| NM_001322194.2 | chr9:g.5069979C>T | c.1568C>T | p.S523L | RefSeq | GRCh38/hg38 |
| NM_001322196.2 | chr9:g.5069979C>T | c.1568C>T | p.S523L | RefSeq | GRCh38/hg38 |
| NM_001322196.1 | chr9:g.5069979C>T | c.1568C>T | p.S523L | RefSeq | GRCh38/hg38 |
| Molecular Profile | Protein Effect | Treatment Approaches |
|---|---|---|
| JAK2 S523L | gain of function | JAK Inhibitor (Pan) JAK Inhibitor (Pan) - ATP competitive JAK2 Inhibitor JAK2 Inhibitor - ATP competitive |