As for the MDA-PCa-2b cells, no genomic rearrangement was found to mediate the aberrant overexpression of ETV4. Consistent with earlier work [26], an ETV1 rearrangement was found in the MDA-PCa-2b cell line, validating its authenticity and the cause of the ETV1 outlier expression. This evidence concerns the gene ETV1 and posterior cortical atrophy.