Interleukin‐27 (
IL
‐27) gene polymorphisms are linked to infectious disease susceptibility and
IL
‐27 plasma level is associated with
HIV
infection. Therefore, we aimed to investigate the association between
IL
‐27 polymorphisms and susceptibility to
HIV
infection and disease progression. A total of 300 patients with
HIV
infection (48 long‐term nonprogressors and 252 typical progressors) and 300 healthy controls were genotyped for three
IL
‐27 polymorphisms, rs17855750, rs181206, rs40837 which were performed by using multiple single nucleotide primer extension technique. Significant association was found between
IL
‐27 rs40837 polymorphisms with susceptibility to
HIV
infection (
AG
vs
AA
: adjusted
OR
= 1.60, 95%
CI
, 1.11‐2.30,
P
=
0.012;
AG
+
GG
vs
AA
: adjusted
OR
= 1.44, 95%
CI
, 1.02‐2.03,
P =
0.038) and disease progression (
LTNP
:
AG
vs
AA
: adjusted
OR
= 2.33, 95%
CI
, 1.13‐4.80,
P =
0.021;
TP
:
AG
vs
AA
: adjusted
OR
= 1.50, 95%
CI
, 1.04‐2.24,
P =
0.030). Serum
IL
‐27 levels were significantly lower in cases compared to controls (
P
<
0.001). There were lower serum
IL
‐27 levels in
TP
s than in
LTNP
s (
P
<
0.001). We further found that
LTNP
s with rs40837
AG
or
GG
genotype had lower serum
IL
‐27 levels than with
AA
genotype (
P
<
0.05). The
CD
4
+
T counts in cases were significantly lower than controls (
P
<
0.001). In contrast, individuals with rs40837
AG
genotype had lower
CD
4
+
T counts than with
AA
genotype in cases (
P
<
0.05). In addition,
CD
4
+
T counts in
TP
s were significantly lower than
LTNP
s (
P
<
0.001).
IL
‐27 rs40837 polymorphism might influence the susceptibility to
...