MSFinals-3034

A 35-year-old man presents with a 4-month history of declining physical performance at work, accompanied by dysarthria and clumsiness. During the examination, he appears anemic and has hepatomegaly and Kayser-Fleischer rings in his cornea. He has a detectable liver edge. He denies excessive alcohol consumption and has no history of foreign travel, intravenous drug use, or unprotected sexual intercourse. His weekly alcohol intake is 0-2 units. He reports that his father passed away from a psychiatric illness in his mid-forties. What is the most probable diagnosis?