TPO and melanoma: A multivariate Cox analysis incorporating meaningful univariate analysis variables showed that baseline FT3 (HR, 0.554; 95% CI, 0.355–0.865; P = 0.009), baseline A-TPO (HR, 0.567; 95% CI, 0.381–0.904; P = 0.016), and LDH (HR, 1.738; 95% CI, 1.121–2.693; P = 0.013) levels and M stage (HR, 2.156; 95% CI, 1.361–3.414; P < 0.001) independently predicted OS in patients with melanoma.