Factors associated with withdrawal of the anti-TNFα biologics in the treatment of rheumatic diseases: Data from the Hong Kong Biologics Registry

Chi Chiu Mok*, Ka Yan Chan, Ka Lai Lee, Lai Shan Tam, Ka Wing Lee, Eric Yuk Tat Chan, Ka Ho Chan, Ka Man Chan, Ka Yan Helen Chan, Pui Shan Julia Chan, Yee Ki Chan, Shuk Yi Lucia Chau, Tak Cheong Cheung, Tsang Cheung, Ho Yin Chung, Carmen Ho, Emily Kun, Lai Wa Kwok, Man Leung Kwok, Kitty KwokChi Kwai Lam, Weng Ng Lao, Chak Sing Lau, Yu Lung Lau, Anthony Kai Yiu Lee, Tony Kwok Fai Lee, Kwok Kei Lee, Man Yee Jolly Lee, Shui Shan Lee, Tsz Leung Lee, Tsz Yan, Samson Lee, Man Chi Leung, Wai Ling Li, Hor Ming Liu, Ming Chi Luk, Kai Yiu Ma, Lai Wo Mak, Mo Yin Mok, Kam Hung Daniel Ng, Woon Leung Ng, Ho So, Chi Keung Sung, Ronald F. Tan, Shuk Kuen Sandy Tang, Man Choi Wan, Ching Han Wong, Kong Chiu Wong, Shiu Man, Pui Yan Wong, Jude Wong, Woon Sing Raymond Wong, Wai Shan Sandy Woo, Kit Yu Young, Cheuk Wan Yim, Ka Lung Carrel Yu, Ka Yan Catherine Yuen, Ka Man Amy Yung

*Corresponding author for this work

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

25 Citations (Scopus)

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.
Original languageEnglish
Pages (from-to)1-8
JournalInternational Journal of Rheumatic Diseases
Volume17
Issue numbers3
DOIs
Publication statusPublished - 1 Dec 2014
Externally publishedYes

Research Keywords

  • Anti-TNFα
  • Biologics
  • Real-life
  • Registry
  • Rheumatic diseases

Fingerprint

Dive into the research topics of 'Factors associated with withdrawal of the anti-TNFα biologics in the treatment of rheumatic diseases: Data from the Hong Kong Biologics Registry'. Together they form a unique fingerprint.

Cite this