DACH1 and posterior cortical atrophy: In order to determine whether the DACH1 gene is deleted in PCa we interrogated the genomic sequencing analysis from four cBioPortal cohorts (Mich/MCTP, N = 59; Broad/Cornell, N = 57; SU2C/PCF (2015), N = 150; FHCRC, N = 54).