Abstract | INTRODUCTION: METHODS: All IBD patients who had plasma 25( OH)D level checked <3 months prior to initiating anti-TNF-α therapy were included in this retrospective single-center cohort study. Our main predictor variable was insufficient plasma 25( OH)D (<30 ng/mL). Cox proportional hazards model adjusting for potential confounders was used to identify the independent effect of pretreatment vitamin D on biologic treatment cessation. RESULTS: Our study included 101 IBD patients (74 CD; median disease duration 9 years). The median index 25( OH)D level was 27 ng/mL (interquartile range, 20-33 ng/mL). One-third of the patients had prior exposure to anti-TNF-α therapy. On multivariate analysis, patients with insufficient vitamin D demonstrated earlier cessation of anti-TNF-α therapy (hazard ratio [HR], 2.13; 95% confidence interval [CI], 1.03-4.39; P = .04). This effect was significant in patients who stopped treatment for loss of response (HR, 3.49; 95% CI, 1.34-9.09) and stronger for CD (HR, 2.38; 95% CI, 0.95-5.99) than UC (P = NS). CONCLUSIONS: Our findings suggest that vitamin D levels may influence durability of anti-TNF-α induction and maintenance therapy. Larger cohort studies and clinical trials of supplemental vitamin D use with disease activity as an end point may be warranted.
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Authors | Zachary A Zator, Stephanie M Cantu, Gauree Gupta Konijeti, Deanna D Nguyen, Jenny Sauk, Vijay Yajnik, Ashwin N Ananthakrishnan |
Journal | JPEN. Journal of parenteral and enteral nutrition
(JPEN J Parenter Enteral Nutr)
2014 Mar-Apr
Vol. 38
Issue 3
Pg. 385-91
ISSN: 1941-2444 [Electronic] United States |
PMID | 24088707
(Publication Type: Journal Article)
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Chemical References |
- Tumor Necrosis Factor-alpha
- Vitamin D
- 25-hydroxyvitamin D
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Topics |
- Adolescent
- Adult
- Dietary Supplements
- Female
- Follow-Up Studies
- Humans
- Inflammatory Bowel Diseases
(blood, complications, drug therapy)
- Male
- Proportional Hazards Models
- Retrospective Studies
- Sensitivity and Specificity
- Tumor Necrosis Factor-alpha
(antagonists & inhibitors)
- Vitamin D
(analogs & derivatives, blood)
- Vitamin D Deficiency
(blood, complications)
- Young Adult
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