IL17A and myeloid sarcoma: Such findings may be also related to the genotype of different populations and how it affects the predisposition to MS and reaction to different antigens; a study by Atya and colleagues showed that interleukin 17 F (IL-17 F) CT genotype and C allele may be associated with a susceptibility to MS in Egyptian population by a gender-dependent mechanism that contributes to unique predisposition in females [17].