To do this, we used the TCGA-PanCancer Atlas database and the Genotype-Tissue Expression (GTEx) database composed of 184 tumour samples and 171 normal samples to confirm that both piR-162725 and PIWIL3 were highly expressed in tumour tissues, and to discover which of the transcripts associated with piR-162725 exhibited a positive or negative correlation with PIWIL3 expression. The gene discussed is PIWIL3; the disease is neoplasm.