Table 4. Characteristics of patients in the responders and nonresponders groups (n = 70).

^aResponder was defined as patient achieving complete response or partial response based on modified Response Evaluation Criteria in Solid Tumors version 1.1.

^bNonresponder was defined as patient developing stable disease or progression disease based on modified Response Evaluation Criteria in Solid Tumors version 1.1.

^cResults calculated with chi‐squared test.

^dResults calculated with Student's t test.

^eResults calculated with Mann‐Whitney U test.

^fResults calculated with Welch's t test.

^gA patient was considered to have positive antithyroid antibodies if either antithyroglobulin or antithyroid peroxidase antibody was present at pretreatment.

Abbreviations: ANA, antinuclear antibody; ECOG PS, Eastern Cooperative Oncology Group performance status; irAE, immune‐related adverse event; NSCLC, non‐small‐cell lung cancer; RF, rheumatoid factor.