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- Title
Predictors of relapse and treatment outcomes in biopsy-proven giant cell arteritis: a retrospective cohort study.
- Authors
Labarca, Cristian; Koster, Matthew J.; Crowson, Cynthia S.; Makol, Ashima; Ytterberg, Steven R.; Matteson, Eric L.; Warrington, Kenneth J.
- Abstract
Objective. To evaluate characteristics of relapse, relapse rates, treatment and outcomes among patients with biopsy-proven GCA in a large, single-institution cohort. Methods. We conducted a retrospective review of all patients with biopsy-proven GCA from 1998 to 2013. Demographic, clinical, laboratory and treatment data at presentation and during follow-up were collected. Comparisons by relapse rate were performed using chi-square tests. Prednisone discontinuation by initial oral dose 440 and>40mg/day was compared using Cox models. Results. The cohort included 286 patients [74% female, mean age at diagnosis 75.0 years (S.D. 7.6), median follow-up 5.1 years). During follow-up, 73 patients did not relapse, 80 patients had one relapse and 133 had two or more relapses. The first relapse occurred during the first year in 50% of patients, by 2 years in 68% and by 5 years in 79%. More patients with established hypertension (P = 0.007) and diabetes (P = 0.039) at GCA diagnosis were in the high relapse rate group (≥ 0.5 relapses/year) and more females were in the low or high relapse groups than in the no relapse group (P = 0.034). Patients receiving an initial oral prednisone dose >40 mg/day were able to reach a dose of <5mg/day [hazard ratio (HR) 1.46 (95% CI 1.09, 1.96)] and discontinue prednisone [HR 1.56 (95% CI 1.09, 2.23)] sooner than patients receiving 4 40 mg/day without an increase in observed glucocorticoid-associated adverse events. Conclusion. Females and patients with hypertension or diabetes at GCA diagnosis have more relapses during follow-up. Patients treated with an initial oral prednisone dose >40 mg/day achieved earlier prednisone discontinuation.
- Subjects
MINNESOTA; DISEASE relapse; GIANT cell arteritis; ACADEMIC medical centers; CHI-squared test; CONFIDENCE intervals; LONGITUDINAL method; PREDNISONE; RESEARCH funding; TREATMENT effectiveness; PROPORTIONAL hazards models; RETROSPECTIVE studies; DATA analysis software; DESCRIPTIVE statistics; KAPLAN-Meier estimator; MANN Whitney U Test; KRUSKAL-Wallis Test; PROGNOSIS
- Publication
Rheumatology, 2016, Vol 55, Issue 2, p347
- ISSN
1462-0324
- Publication type
Article
- DOI
10.1093/rheumatology/kev348