Any underlying medical or psychiatric condition, which in the opinion of the investigator will make the administration of CYT107 hazardous or obscure the interpretation of adverse events (AEs), such as a condition associated with frequent diarrhea Patients must not have other significant medical, surgical, or psychiatric conditions or require any medication or treatment that in the opinion of the investigator may interfere with compliance, make the administration of the study drugs hazardous or obscure the interpretation of adverse events (AEs), such as a condition associated with frequent diarrhea; patients must not have an active infection requiring current treatment with parenteral antibiotics