PBOV1 and breast cancer: In order to test whether PBOV1 expression could be regulated by C/EBP transcription factor family, we analyzed the dataset of microarray profiling of 60 breast cancer samples (GEO accession GDS806 [35]) and found that the expression level PBOV1 significantly correlated to C/EBPα (Pearson correlation 0.48, p = 3•10−4, 3rd percentile in all PBOV1-correlated profiles, here and elsewhere without correction for multiple hypothesis testing).