CGH/SNP chromosome microarray data showed that, in addition to the heterozygous loss of chromosome 3p (3p26.3-p14.3 (55.28 Mb) in 80–100% of cells), a region including BAP1 and MLH1, this tumour also exhibited the heterozygous loss of chromosome 3q (3q25.32-q29 (35.29 Mb) in 80–100% of cells) and heterozygous loss of chromosome 6q (6q16.2-q27). The gene discussed is MLH1; the disease is neoplasm.