title: Chromosome 7 deletion present at diagnosis in Ph1 negative CML.
mesh_terms: D000293:Adolescent; D002872:Chromosome Deletion; D002906:Chromosomes, Human, 6-12 and X; D006801:Humans; D007621:Karyotyping; D007951:Leukemia, Myeloid / Q000235:genetics*; D008297:Male; D010677:Philadelphia Chromosome