We also found a parallel increase of IF/TA from D0 to M3, in accordance with the literature regarding the development of IF/TA assessed by routine kidney biopsies.43 We found that not only CB1 and IF/TA increased from D0 to M3 in kidney grafts but also that there was a significant positive correlation between CB1 expression and renal fibrosis at M3 (P = .04). The gene discussed is CNR1; the disease is renal fibrosis.