| Vitamin D deficiency has adverse effects on renal allograft outcomes, and polymorphisms
of genes encoding vitamin D-binding protein (VDBP) and vitamin D receptor (VDR) are defined to
play a role in these conditions. The goal of the current investigation was to evaluate the connection
between those polymorphisms with acute rejection, viral infection history, and recipients’ vitamin
D status. In this study, 115 kidney transplant recipients and 100 healthy individuals were included.
VDR polymorphisms including FokI (rs2228570), Apal (rs7975232), BsmI (rs1544410), as well as VDBP
(rs7040) polymorphisms were studied using high resolution melting (PCR-HRM) analysis among the
studied groups. The frequency of G allele in Apal rs7975232 polymorphism in the kidney transplant
recipients was 0.63 times lower than healthy individuals (p = 0.026). Further, the G allele frequency
in VDBP rs7040 polymorphism was significantly lower in patients with allograft rejection (p = 0.002).
Considering the incidence of viral infection, significant differences were identified between the
frequencies of VDR FokI (OR = 2.035; 95% CI 1.06–2.89, p = 0.030) and VDBP rs7040 (OR = 0.40; 95%
CI 0.24–0.67, p < 0.001) T alleles in the studied groups. Moreover, the VDBP rs7040 GG genotype
distribution was low in the recipients with a history of viral infection (p = 0.004). VDR (FokI) and
VDBP (rs7040) alleles and their genotype distribution are significantly associated with allograft
outcomes including allograft rejection and viral infection in the studied population. |