From the Journals

Childhood inflammatory bowel disease linked to increased mortality


 

FROM GASTROENTEROLOGY

Children who developed inflammatory bowel disease before the age of 18 had a three- to fivefold increase in risk of death, compared with others in a large, retrospective registry study.

The study, which spanned a recent 50-year period, found “no evidence that [these] hazard ratios have changed since the introduction of immunomodulators and biologics,” wrote Ola Olén, MD, PhD, of Karolinska University Hospital in Sola, Sweden, together with her associates. Malignancy was the most frequent cause of death among patients with childhood-onset inflammatory bowel disease, followed by digestive diseases and infections. Absolute numbers of premature deaths were low, but the increase in relative risk was highest among patients with childhood-onset ulcerative colitis with primary sclerosing cholangitis and patients who had a first-degree relative with ulcerative colitis. The findings were published in the February issue of Gastroenterology.

Inflammatory bowel disease is thought to be more severe when it begins in childhood, but data on mortality for these patients are lacking. Using national Swedish health registries, Dr. Olén and her associates compared deaths among 9,442 children and adolescents with inflammatory bowel disease with those among 93,180 others matched by sex, age, and place of residence. Both groups were typically followed through age 30 years, and the study covered 1964 through 2014.

In all, there were 294 deaths among patients with childhood-onset inflammatory bowel disease (2.1 deaths per 1,000 person-years) and 940 deaths among matched individuals (0.7 deaths per 1,000 person-years), for a statistically significant adjusted hazard ratio of 3.2 (95% confidence interval, 2.8-3.7). For every 694 patients with childhood-onset inflammatory bowel disease who were followed through adulthood, there was one additional death per year, compared with a demographically similar population, the researchers determined.

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