STAG2 and non-small cell lung carcinoma: This is similar to other recent studies of the STAG2 mutational hot spot region (corresponding to exon 9, 11, 12 and 20) in 90 acute leukemia samples [15] and 225 adult carcinomas of various origin (colorectal-, gastric-, breast-, prostate carcinoma and non-small lung cell cancer) [16].