IDH2 and chronic myelomonocytic leukemia: He has a past medical history of hypertension; alcohol abuse, resulting in alcoholic hepatitis (abstinence from alcohol for a month); myeloproliferative disorder with positive Janus kinase 2 (JAK2) and isocitrate dehydrogenase 2 (IDH2) mutations; and chronic myelomonocytic leukemia (CMML).