The link between the IGF1R‐PTPN1 proteins is known: literature data indicate a crucial role of PTPN1 as a tumour suppressor, able to negatively regulate multiple pathways of cell growth directly through IGF1R and IR, or indirectly through leptin receptor GHR (Neel & Tonks, 2016). This evidence concerns the gene PTPN1 and neoplasm.