Background: IL-17 is an inflammatory cytokine that plays a crucial role in
many autoimmune diseases. Aim: To investigate the association of IL-17A
rs2275913 and IL-17F rs763780 gene polymorphisms with acute immune thrombocytopenic
purpura (ITP) in Egyptian children. Patients and methods: We
examined 80 patients (male/female, 33/47; median age, 7 years old) diagnosed
with acute ITP and 55 healthy controls (male/female, 28/27; median age, 7
years old). Genotyping was determined using the polymerase chain reaction-
restriction fragment length polymorphism (PCR-RFLP) technique. Results:
In the acute ITP group compared to control, statistical analysis of the
genotype frequencies (GG, AG, AA) of the IL-17A rs2275913 polymorphism
and its alleles (A, G) showed no significant difference between the two groups
(p > 0.05). Interestingly, the IL17A rs2275913 GG genotype was associated
with early recovery (p = 0.04). As regard the genotype frequencies of the
IL-17F rs763780 polymorphism, there was statistical significant difference in
the TT and TC genotype frequencies between the case and control groups (p
= 0.001 and p = 0.003, respectively). The number of IL-17F rs763780 T alleles
was significantly higher in acute ITP patients as compared with children in
the control group (p < 0.001). Conclusion: The present findings indicate that
the IL-17 polymorphism IL-17F rs763780, but not IL-17A rs2275913 may be
associated with a higher risk of acute ITP in Egyptian children.