SLC6A9 and androgen insensitivity syndrome: Considering the normal sEMG in an adult patient carrying the same pathogenic SLC6A9 variant and the conflicting sEMG in relatively mature AIS patients (73, 74), we argue that spinal curvature is a compensatory response that eventually corrects or adapts to the aberrant paraspinal muscle activity in older patients and therefore the findings from mature AIS patients varied greatly (73).