Duplication of part of chromosome no. 1 in myeloproliferative diseases.
D002869:Chromosome Aberrations; D002900:Chromosomes, Human, 1-3; D006801:Humans; D015470:Leukemia, Myeloid, Acute / Q000209:etiology / Q000235:genetics*; D011087:Polycythemia Vera / Q000209:etiology / Q000235:genetics*; D055728:Primary Myelofibrosis / Q000209:etiology / Q000235:genetics*