GSTM1 and prostate carcinoma: We extend this theory by presenting, for the first time, MRS metabolomic profiles of Hb specimens from cancerous prostates which can achieve the following: (1) differentiate PGG1&2 from PGG3&4, (2) differentiate pT = IIab from pT = IIc groups, and (3) identify a sub-group of the low aggressive prostate cancer group.