IL17A and Osteopenia: Additionally, analysis of frequency of the GG, GA and AA genotypes -197G > A polymorphism of the IL-17 gene showed comparable results between the study groups including women with osteopenia and osteoporosis (GG = 35%, GA = 48%, AA = 17%) and healthy women of reproductive age (GG = 37.9%, GA = 43.1%, AA = 19%).