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Overall survival after stage IV diagnosis in patients not receiving ipilimumab treatment is not different in patients with serum sCTLA4 levels above 200 pg/mL. Overall survival curves (up to 5 years) of patients who did not receive ipilumumab comparing those with greater than 200 pg/mL serum sCTLA4 to those with less than or equal to 200 pg/mL.
