8 cases of LS were found among the 30 subjects visited; seven of these patients were positive for anti-TPO antibodies, but only four had clinical AITD. The HLA-B*15-DRB1*04-DRB4* haplotype was associated with the co-occurrence of LS and thyroid autoimmunity. The gene discussed is HLA-B; the disease is autoimmune thyroid disease.