TY - JOUR T1 - Low Level (Below Cutoff) of Anti-Cyclic Citrullinated Peptide Test Results in Diagnosis of Rheumatoid Arthritis in a High-risk Population JF - The Journal of Rheumatology JO - J Rheumatol SP - 208 LP - 208 DO - 10.3899/jrheum.090555 VL - 37 IS - 1 AU - DUCK-AN KIM AU - THINK-YOU KIM Y1 - 2010/01/01 UR - http://www.jrheum.org/content/37/1/208.abstract N2 - To the Editor:We read with interest the recent article by Chibnik, et al1. The authors stated that the lower values of anti-cyclic citrullinated peptide (anti-CCP) should be regarded as a probable sign of preclinical rheumatoid arthritis (RA) and could be used as an additional tool in determining the course of action in treating the earliest potential symptoms of RA, especially in a high-risk population.The Hospital for Rheumatic Diseases was the first specialized rheumatic disease hospital established in Korea. The patients consist largely of a high-risk population for RA in … Address correspondence to Dr. T-Y. Kim, The Hospital for Rheumatic Diseases—Early Arthritis, Hanyang University Medical Center, 17 Haengdang-dong Seongdong-gu, Seoul 133–792, Republic of Korea. E-mail: tykim{at}hanyang.ac.kr ER -