system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
All of the following variables can predict survival in a patient with primary sclerosing cholangitis; except
assistant
The correct answer is  Primary sclerosing cholangitis
The prognosis is unfavorable, with a median survival of 9 to 12 years following the diagnosis, regardless of therapy.
Four variables (age, serum bilirubin level, histologic stage, and splenomegaly) predict survival.
The diagnosis is supported by a positive AMA test.
The presence of AMA in high titre is unrelated to the clinical or histologic picture.