Serum cholesterol level =< 300 mg/dL (7.75 mmol/L)Xx_NEWLINE_xXFasting serum cholesterol =< 300 mg/dLXx_NEWLINE_xXFasting cholesterol =< 240 mg/dL; ONLY APPLICABLE for patients with NF2 mutation (GSK2256098)Xx_NEWLINE_xXCholesterol =< 300 mg/dL (7.75 mmol/L)Xx_NEWLINE_xXSerum total cholesterol level =< 300 mg/dLXx_NEWLINE_xXPatients must have a serum triglyceride level =< 300 mg/dL and serum cholesterol level =< 300 mg/dL; if an initial random draw (i.e. non-fasting) is out of range, it is acceptable to repeat this test as a fasting drawXx_NEWLINE_xXSerum total cholesterol level =< 300 mg/dL within 7 days prior to enrollmentXx_NEWLINE_xX