To explore the impact of XPA mRNA expression on clinical outcome, Wu et al. [156] examined GEO and Array Express datasets in the Prediction of Clinical Outcomes from Genomic Profiles (PRECOG, http://precog.stanford.edu) database, identifying that higher XPA expression is associated with improved OS and a better prognosis in glioma and BC [156]. The gene discussed is XPA; the disease is central nervous system cancer.