TPO and celiac disease: Moreover, studies conducted among LADA patients (n = 70) and type 2 diabetes patients (n = 69) revealed that LADA patients more commonly had antibodies active against thyroid antigens (anti-TPO, anti-TG) as well as against tissue transglutaminase of IgA class (anti-tTG, coeliac disease marker), indicative of subclinical hypothyroidism [94].