The present case-control study inspected the association between seven single nucleotide polymorphisms (SNPs) of IL4 (IL4<sub>-1098</sub>: rs2243248, IL4<sub>-590</sub>: rs2243250, and IL4<sub>-33</sub>: rs2070874), IL4RA (IL4RA<sub>+1902</sub>: rs1801275), and IL10 (IL10<sub>-1082</sub>: rs1800896, IL10<sub>-819</sub>: rs1800871, and IL10<sub>-592</sub>: rs1800872) genes and MS in Iraqi patients.
Additionally neither IL4 nor IL4R genes are susceptibility factors for Brazilian MS but may be able to modify ethnicity-dependent disease risk and penetrance of susceptibility factors.
We applied the multifactor dimensionality reduction (MDR) test to detect epistasis, and identified single-IL4R(Q576R)- and three-IL4R(Q576R), IL5RA(-80), CD14(-260)- locus association models that predict MS risk with 75-76% accuracy (P<0.01).
We applied the multifactor dimensionality reduction (MDR) test to detect epistasis, and identified single-IL4R(Q576R)- and three-IL4R(Q576R), IL5RA(-80), CD14(-260)- locus association models that predict MS risk with 75-76% accuracy (P<0.01).
These findings suggest a potentially important role for the IL4R gene in predisposition to MS, and provide further evidence of its relevance as a candidate gene for immune-related diseases.
These results indicate, that the IL4R variant R551 may influence the genetic predisposition for PPMS but does not represent a general genetic risk factor for MS.