The mir-100 gene is embedded in a non-coding host gene, MIR100HG. Analysis of TCGA data revealed that 1.2% of the breast tumors (11 out of a total of 913 samples with copy number data available) had homozygous deletion of both mir-100 and MIR100HG, which could explain loss of miR-100 in these samples. The gene discussed is MIR100HG; the disease is breast neoplasm.