P911: SYMPTOM BURDEN AND ITS IMPACT ON DAILY LIFE AMONG PATIENTS WITH IDIOPATHIC MULTICENTRIC CASTLEMAN DISEASE (IMCD) – FINDINGS FROM AN INTERNATIONAL IMCD PATIENT SURVEY - F. Shupo; N. Mason; E. Jones; G. Wayi-Wayi; M. Repasky; M. Franklin; J. Brazier; N. Zibelnik; S. Mukherjee (HemaSphere, 2022)