Interestingly, in our raw list of proteins potentially interacting with PTPRJ we also found CD147, even though the enrichment in PTPRJ-His6 observed by mass spectrometry was below the significance threshold (Supplementary Table 1); this information, validated by preliminary experiments of co-immunoprecipitation indicating that PTPRJ interacts with CD147, stimulates further investigations in order to shed lights about the role of the PTPRJ/CD98hc/CD147 complex also in the energetic metabolism of cancer cells. The gene discussed is PTPRJ; the disease is cancer.