Additionally, we also found in various cancer types several other prognostic pairs potentially associated with intercellular communications such as the recurrent interactions between miR-532-5p and COL5A1 (prognostically promising in KIRC and LGG) and between miR-1307-3p and ST6GALNAC6 (Supplementary Table S3; Supplementary Fig. S7). This evidence concerns the gene COL5A1 and cancer.