The paradox of 20q11.21 amplification in a subset of cases of myeloid malignancy with chromosome 20 deletion

Abstract excerpt

Deletion of the long arm of one chromosome 20 (del(20q)) is a well-recognized abnormality in acute myeloid leukemia (AML) and myelodysplastic syndromes (MDS) and is presumed to cause loss of a tumor suppressor gene at 20q12. In a previously published series of MDS and AML cases, which had lost this region via unbalanced translocation, around 40% of cases were shown to have additional copies of the chromosome 20...

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