Undetectable anti-TNF drug levels in patients with long-term remission predict successful drug withdrawal.
Aliment Pharmacol Ther
; 42(3): 356-64, 2015 Aug.
Article
em En
| MEDLINE
| ID: mdl-26032402
ABSTRACT
BACKGROUND:
Low drug levels are associated with emerging loss of response to anti-TNF. However, this may not be the case in patients with long-term remission.AIM:
To investigate the outcome of anti-TNF discontinuation in patients with long-term remission and incidental undetectable drug levels.METHODS:
A retrospective cohort study examining the duration of relapse-free survival in IBD patients in remission who discontinued infliximab or adalimumab having undetectable drug levels.RESULTS:
Forty eight patients who discontinued anti-TNF while in remission and had available drug levels were identified in two centres in France and Israel (infliximab-treated 35, adalimumab-13, Crohn's disease 30, ulcerative colitis 18, mean treatment duration of 22.7 ± 12.4 months). Endoscopy/MRE before stopping showed absence of active inflammation in 40/42 (95%) of evaluated patients, while inflammatory biomarkers (CRP and/or Calprotectin) were completely normal in only 31/48 (65%) of patients. During 12 months median follow-up, relapse occurred in 16/20 (80%) of patients who stopped anti-TNF while having measurable drug levels compared with 9/28 (32%) of patients who had undetectable drug levels (OR 8.4, 95% CI 2.2-32, P = 0.002). Relapse-free survival after anti-TNF cessation was significantly longer in patients with absent drug compared to those with detectable drug (P < 0.001, log rank test). On multivariate analysis, a patient's decision to stop therapy was weakly associated and abnormal inflammatory biomarkers and detectable drug levels were both strongly and independently associated with a higher risk of relapse after drug discontinuation.CONCLUSION:
Incidental finding of undetectable anti-TNF drug levels in patients with stable long-term deep remission may identify a subset of patients whose clinical remission is no longer dependent on anti-TNF treatment.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Colite Ulcerativa
/
Doença de Crohn
/
Fator de Necrose Tumoral alfa
/
Anti-Inflamatórios
Tipo de estudo:
Etiology_studies
/
Incidence_studies
/
Observational_studies
/
Prognostic_studies
/
Risk_factors_studies
Limite:
Adult
/
Female
/
Humans
/
Male
/
Middle aged
País/Região como assunto:
Asia
/
Europa
Idioma:
En
Revista:
Aliment Pharmacol Ther
Assunto da revista:
FARMACOLOGIA
/
GASTROENTEROLOGIA
/
TERAPIA POR MEDICAMENTOS
Ano de publicação:
2015
Tipo de documento:
Article
País de afiliação:
Israel