In each multivariable model, inference of the association between gPTSD and autoimmune thyroid disease was not substantially altered (CRP adjusted gPTSD IVW beta = 0.162, SE = 0.047, p = 0.0006; IL-6 adjusted gPTSD IVW beta = 0.174, SE = 0.043, p = 5.2 × 10−5; WBC adjusted gPTSD IVW beta = 0.163, SE = 0.044, p = 0.0002) compared to the unadjusted gPTSD estimate. This evidence concerns the gene IL6 and autoimmune thyroid disease.