TNF and inflammatory bowel disease: The variables included in the model were rs4410871, rs9936833, rs3132680, and rs3823417, along with clinical and demographic factors such as a family history of IBD, BMI, sex, current anti-TNF therapy, smoking status, disease duration, ESRs, European ancestry (EUR), African ancestry (AFR), Amerindian ancestry (AMR), CRP, age, white blood cell count, hemoglobin levels, platelet count, and albumin level.