- AST/ALT ≤ 3 x ULN and total bilirubin ≤ 2.0 x ULN. In the setting of metastatic disease to the liver, AST/ALT may be ≤5x ULN and total bilirubin ≤2.5 x ULN. If a patient is known or suspected to have Gilbert's disease, total bilirubin up to ≤2.5 x ULN is allowed.