Myeloid/lymphoid neoplasms with eosinophilia (MLN) and tyrosine kinase (TK) gene fusions are frequently associated with clonal eosinophilia and may present as myeloproliferative neoplasms (MPNs), myelodysplastic/myeloproliferative neoplasms (MDS/MPN), AMLs, and/or acute lymphoblastic leukemias/lymphomas [65]. The gene discussed is TKT; the disease is myeloproliferative disorder.