Study schema. (IMAGE) First Hospital of Jilin University Caption Apo A, apolipoprotein A; Apo B, apolipoprotein B; CD, Crohn’s disease; HDL-C, high-density lipoprotein cholesterol; IBD, inflammatory bowel disease; IVW, inverse-variance weighted; LDL-C, low-density lipoprotein cholesterol; Lp(a), lipoprotein (a); TC, total cholesterol; TG, triglycerides; UC, ulcerative colitis. Credit By Xiaoli Pang, Huizhong Yang, Mingyu Li, Mayte Suarez-Farinas, Suyan Tian Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. License CC BY-NC Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.