JAK2 Back

Janus kinase 2 (a protein tyrosine kinase)

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NCBI Description of JAK2

This gene product is a protein tyrosine kinase involved in a specific subset of cytokine receptor signaling pathways. It has been found to be constituitively associated with the prolactin receptor and is required for responses to gamma interferon. Mice that do not express an active protein for this gene exhibit embryonic lethality associated with the absence of definitive erythropoiesis. Sequence Note: This RefSeq record was created from transcript and genomic sequence data to make the sequence consistent with the reference genome assembly. The genomic coordinates used for the transcript record were based on transcript alignments.

Community Annotation of JAK2 Add / Edit JAK2: Annotations

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Figure notes

• "Mouse over" a mutation to see details.
• Missense green saturation indicates evolutionary conservation of the mutated positions.
• Red hashes in protein strip are splice sites.
• Blue-white-red bars are log2 copy ratio distributions (–1 to +1) from Zack et al. (2013).


JAK2 is highly significantly mutated in
JAK2 is significantly mutated in
JAK2 is near significance in

Click on a tumor type to see its full list of significant genes.

Data details

Mutation list for JAK2