After approval of local Bioethics Committee and national health authorities, gene panel sequencing conducted on the deceased donor using stored HLA typing samples collected at the time of transplantation, revealed a homozygous pathogenic variant in the SLC3A1 gene [NM_000341.3: c.1400T>C p.(Met467Thr)], classified as pathogenic, previously reported in individuals affected by cystinuria, confirming the diagnosis of cystinuria transmitted via the kidney allograft [3]. Here, SLC3A1 is linked to cystinuria.