Hyperthyroidism (OR 3.8, 95%CI 1.7-8.6), nausea (OR 3.7, 95%CI 2.5-5.3), diarrhea (OR 2.7, 95%CI 2.2-3.2), colitis (OR 3.4, 95%CI 2.7-4.3), ALT increase (OR 4.9, 95%CI 3.9-6.1), AST increase (OR 3.8, 95%CI 3.0-4.9), pruritus (OR 2.4, 95%CI 1.5-3.9), rash (OR 2.8, 95%CI 2.1-3.8), fatigue (OR 2.8, 95%CI 2.2-3.7), decreased appetite (OR 2.4, 95%CI 1.5-3.8), and hypophysitis (OR 2.0, 95%CI 1.2-3.3) were more frequent with combined ICIs. Here, GPT is linked to hyperthyroidism.