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what is JAK 2 positive myelofibrosis?
Can you explain what JAK 2 positive myelofibrosis is?
Sure, JAK 2 positive myelofibrosis is a type of bone marrow cancer where the bone marrow is replaced by scar tissue, leading to anemia, weakness, and an enlarged spleen. The JAK 2 gene mutation is present in almost all patients with myelofibrosis.