- Patients at high risk of veno-occlusive disease of the liver (criteria not yet rigorously defined but includes bilirubin > 2.0 mg and serum glutamic oxaloacetic transaminase [SGOT] or serum glutamate pyruvate transaminase [SGPT] > 2 x normal); patients may be accepted outside of this range if cleared by gastrointestinal (GI) consult