The TMPRSS (2)::ERG (4) fusion (5/140 – 3.6%) was the most frequently gene fusions detected with 1101, 3306, 8918, 116645 and 162560 fusion mapped reads (Figure 5), two of them were identified in two patients operated on WHO grade II gliomas, both of whom had a history of other cancers (adenocarcinoma of the lower esophagus and papillary adenocarcinoma of thyroid), two were identified in two patients operated on for prostate carcinomas brain metastasis and one was identified in patient operated on for endometrium carcinomas brain metastasis. The gene discussed is ERG; the disease is cancer.