@article{b8eb28b510424d0094c355ea6f8f9498,
title = "Factors associated with withdrawal of the anti-TNFα biologics in the treatment of rheumatic diseases: Data from the Hong Kong Biologics Registry",
abstract = "Objectives: To study the factors associated with withdrawal of the and tumor necrosis factor alpha (anti-TNFα) biologics in the treatment of rheumatic diseases. Method: Data from the Hong Kong Biologics Registry were retrieved. The cumulative rates of withdrawal of different biological agents were studied by Kaplan-Meier plot and the incidence of serious adverse events (SAEs) was calculated. Factors associated with the withdrawal of the anti-TNFα agents were studied by Cox regression. Results: Between 2005 and 2013, 2059 courses of biologics were used in 1345 patients. After 3454 patient-years, 1171 (57%) courses were terminated because of clinical inefficacy (38.1%), SAEs (22.3%) and financial reasons (15.9%). The most frequent SAEs (per 100-patient-years) were allergy (2.90), serious infections (1.34), tuberculosis (0.93) and infusion/injection site reaction (0.75). Among the anti-TNFα agents, the cumulative probability of drug withdrawal for either inefficacy or SAEs in 5 years was highest with infliximab (IFX) (64.5%), followed by etanercept (ETN) (44.2%) and adalimumab (ADA) (36.9%). The incidence of serious infections and tuberculosis (per 100 patient-years) for IFX, ETN and ADA users was 1.99, 0.85 and 0.63; and 1.68, 0.43 and 0.85, respectively. Infusion/injection site reaction was highest with IFX (1.38/100 patient-years). Cox regression revealed increasing age, female sex, not having a diagnosis of spondyloarthritis (SpA) and IFX use were significantly associated with drug withdrawal for either inefficacy or SAEs. Rheumatoid arthritis (RA) had the highest hazard ratio for drug withdrawal but SpA was favorable for drug retention, after adjustment for age, sex, disease duration and the choice of anti-TNFα agents. Conclusions: In our registry, the retention rate of the anti-TNFα agents was lowest but the incidence of tuberculosis, serious infections and infusion reaction was highest with IFX. Older female patients with RA and the use of IFX were independently associated with drug withdrawal.",
keywords = "Anti-TNFα, Biologics, Real-life, Registry, Rheumatic diseases",
author = "Mok, {Chi Chiu} and Chan, {Ka Yan} and Lee, {Ka Lai} and Tam, {Lai Shan} and Lee, {Ka Wing} and {Tat Chan}, {Eric Yuk} and Chan, {Ka Ho} and Chan, {Ka Man} and {Helen Chan}, {Ka Yan} and {Julia Chan}, {Pui Shan} and Chan, {Yee Ki} and {Lucia Chau}, {Shuk Yi} and Cheung, {Tak Cheong} and Tsang Cheung and Chung, {Ho Yin} and Carmen Ho and Emily Kun and Kwok, {Lai Wa} and Kwok, {Man Leung} and Kitty Kwok and Lam, {Chi Kwai} and Lao, {Weng Ng} and Lau, {Chak Sing} and Lau, {Yu Lung} and {Yiu Lee}, {Anthony Kai} and {Fai Lee}, {Tony Kwok} and Lee, {Kwok Kei} and {Jolly Lee}, {Man Yee} and Lee, {Shui Shan} and Lee, {Tsz Leung} and Tsz Yan and Samson Lee and Leung, {Man Chi} and Li, {Wai Ling} and Liu, {Hor Ming} and Luk, {Ming Chi} and Ma, {Kai Yiu} and Mak, {Lai Wo} and Mok, {Mo Yin} and {Daniel Ng}, {Kam Hung} and Ng, {Woon Leung} and Ho So and Sung, {Chi Keung} and Tan, {Ronald F.} and {Sandy Tang}, {Shuk Kuen} and Wan, {Man Choi} and Wong, {Ching Han} and Wong, {Kong Chiu} and Shiu Man and Wong, {Pui Yan} and Jude Wong and {Raymond Wong}, {Woon Sing} and {Sandy Woo}, {Wai Shan} and Young, {Kit Yu} and Yim, {Cheuk Wan} and {Carrel Yu}, {Ka Lung} and {Catherine Yuen}, {Ka Yan} and {Amy Yung}, {Ka Man}",
year = "2014",
month = dec,
day = "1",
doi = "10.1111/1756-185X.12264",
language = "English",
volume = "17",
pages = "1--8",
journal = "International Journal of Rheumatic Diseases",
issn = "1756-1841",
publisher = "John Wiley & Sons",
number = "s3",
}