대부분은 갑상선 기능은 정상 소견을 보이며, 갑상선 자가항체 양성인 환자 중 약 20% 내외에서만 갑상선 질환이 관찰되었다.
In many cases, thyroid function was normal, and thyroid condition was observed in mere about 20% of patients who had been positive for thyroid autoantibodies.