Juvenile myelomonocytic leukemia

Juvenile myelomonocytic leukemia is a rare, aggressive hematopoietic malignancy of infancy and early childhood classified as an overlap myelodysplastic and myeloproliferative neoplasm

Juvenile myelomonocytic leukemia is a rare, aggressive hematopoietic malignancy of infancy and early childhood classified as an overlap myelodysplastic and myeloproliferative neoplasm The condition primarily targets the hematopoietic system, resulting in the excessive, clonal proliferation of immature myelomonocytic cells within the bone marrow and peripheral circulation Pathophysiologically, it is driven in the vast majority of cases by somatic or germline mutations that cause hyperactivation o...

Juvenile myelomonocytic leukemia is a rare, aggressive hematopoietic malignancy of infancy and early childhood classified as an overlap myelodysplastic and myeloproliferative neoplasm

The condition primarily targets the hematopoietic system, resulting in the excessive, clonal proliferation of immature myelomonocytic cells within the bone marrow and peripheral circulation

Pathophysiologically, it is driven in the vast majority of cases by somatic or germline mutations that cause hyperactivation of the RAS/MAPK signaling pathway and selective hypersensitivity of myeloid progenitor cells to granulocyte-macrophage colony-stimulating factor Clinically, affected children typically present with persistent peripheral monocytosis, cytopenias, elevated fetal hemoglobin levels, and leukemic organ infiltration manifesting as pronounced hepatosplenomegaly, lymphadenopathy, a...

Pathophysiologically, it is driven in the vast majority of cases by somatic or germline mutations that cause hyperactivation of the RAS/MAPK signaling pathway and selective hypersensitivity of myeloid progenitor cells to granulocyte-macrophage colony-stimulating factor

Clinically, affected children typically present with persistent peripheral monocytosis, cytopenias, elevated fetal hemoglobin levels, and leukemic organ infiltration manifesting as pronounced hepatosplenomegaly, lymphadenopathy, and cutaneous rashes