Microscopic colitis and risk of incident rheumatoid arthritis: A nationwide population-based matched cohort study.
Aliment Pharmacol Ther
; 58(10): 1028-1040, 2023 11.
Article
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| MEDLINE
| ID: mdl-37727878
ABSTRACT
BACKGROUND:
Microscopic colitis (MC) has been linked to several autoimmune conditions. Results from previous studies on the association with rheumatoid arthritis (RA) have been inconsistent.AIM:
To assess the risk of future RA in MC.METHODS:
We conducted a nationwide matched cohort study in Sweden of 8179 patients with biopsy-verified MC (diagnosed in 2007-2017), 36,400 matched reference individuals and 8202 siblings without MC, with follow-up until 2021. Information on MC was obtained from all of Sweden's regional pathology registers (n = 28) through the ESPRESSO cohort. Data on incident RA were collected from the National Patient Register. Using Cox regression, we calculated adjusted hazard ratios (aHRs) and 95% confidence intervals (CIs).RESULTS:
During a median follow-up of 9.1 years (interquartile range = 6.7-11.7), 73 MC patients and 183 reference individuals from the general population were diagnosed with RA (99 vs. 55 events per 100,000 person-years), equivalent to one extra case of RA in 226 patients with MC followed for 10 years. These rates corresponded to an aHR of 1.83 (95% CI = 1.39-2.41). The aHR was highest during the first year of follow-up (2.31 [95% CI = 1.08-4.97]) and remained significantly elevated up to 5 years after MC diagnosis (aHR 2.16; 95% CI = 1.42-3.30). Compared to siblings, without MC, the aHR was 2.04 (95% CI = 1.18-3.56).CONCLUSION:
Patients with MC are at a nearly two-fold risk of developing RA compared to the general population. Knowledge of this increased risk may expedite evaluation for RA in patients with MC presenting with joint symptoms and/or arthralgia, thus preventing delay until RA diagnosis.Palabras clave
Texto completo:
1
Base de datos:
MEDLINE
Asunto principal:
Artritis Reumatoide
/
Colitis Microscópica
Tipo de estudio:
Etiology_studies
/
Observational_studies
/
Risk_factors_studies
Idioma:
En
Revista:
Aliment Pharmacol Ther
Asunto de la revista:
FARMACOLOGIA
/
GASTROENTEROLOGIA
/
TERAPIA POR MEDICAMENTOS
Año:
2023
Tipo del documento:
Article