A total of 13% of the renal events were secondary to the cancer itself, highlighting several cases: dominant IgA post-infectious glomerulonephritis after abscess secondary to resection of pulmonary metastasis, membranous nephropathy in the case of bladder and anal epidermoid neoplasia, amyloidosis in intestinal cancer, as well as diverse extracapillary glomerulonephritis and thrombotic microangiopathy secondary to gastrointestinal cancer. This evidence concerns the gene CD79A and Genetic thrombotic microangiopathy.