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Original Investigation
June 2016

Risk Factors Associated With Pediatric Acute Recurrent and Chronic PancreatitisLessons From INSPPIRE

Author Affiliations
  • 1Nationwide Children’s Hospital, Columbus, Ohio
  • 2University of New South Wales, Sydney Children’s Hospital Randwick, Sydney, Australia
  • 3Medical College of Wisconsin, Milwaukee
  • 4Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio
  • 5University of Texas Southwestern Medical School, Dallas
  • 6University of Minnesota Masonic Children’s Hospital, Minneapolis
  • 7Hospital for Sick Children, Toronto, Ontario, Canada
  • 8Baylor College of Medicine, Houston, Texas
  • 9Harvard Medical School, Boston, Massachusetts
  • 10Seattle Children’s Hospital, Seattle, Washington
  • 11University of California, San Francisco
  • 12Children’s Hospital of Pittsburgh, Pittsburgh, Pennsylvania
  • 13Montreal Children’s Hospital, McGill University, Montreal, Quebec, Canada
  • 14University of Utah, Salt Lake City
  • 15Hadassah Hebrew University Hospital, Jerusalem, Israel
  • 16University of Iowa Children’s Hospital, Iowa City
JAMA Pediatr. 2016;170(6):562-569. doi:10.1001/jamapediatrics.2015.4955
Abstract

Importance  Pediatric acute recurrent pancreatitis (ARP) and chronic pancreatitis (CP) are poorly understood.

Objective  To characterize and identify risk factors associated with ARP and CP in childhood.

Design, Setting, and Participants  A multinational cross-sectional study of children with ARP or CP at the time of enrollment to the INSPPIRE (International Study Group of Pediatric Pancreatitis: In Search for a Cure) study at participant institutions of the INSPPIRE Consortium. From August 22, 2012, to February 8, 2015, 155 children with ARP and 146 with CP (aged ≤19 years) were enrolled. Their demographic and clinical information was entered into the REDCap (Research Electronic Data Capture) database at the 15 centers. Differences were analyzed using 2-sample t test or Wilcoxon rank sum test for continuous variables and Pearson χ2 test or Fisher exact test for categorical variables. Disease burden variables (pain variables, hospital/emergency department visits, missed school days) were compared using Wilcoxon rank sum test.

Main Outcomes and Measures  Demographic characteristics, risk factors, abdominal pain, and disease burden.

Results  A total of 301 children were enrolled (mean [SD] age, 11.9 [4.5] years; 172 [57%] female); 155 had ARP and 146 had CP. The majority of children with CP (123 of 146 [84%]) reported prior recurrent episodes of acute pancreatitis. Sex distribution was similar between the groups (57% female in both). Hispanic children were less likely to have CP than ARP (17% vs 28%, respectively; odds ratio [OR] = 0.51; 95% CI, 0.29-0.92; P = .02). At least 1 gene mutation in pancreatitis-related genes was found in 48% of patients with ARP vs 73% of patients with CP (P < .001). Children with PRSS1 or SPINK1 mutations were more likely to present with CP compared with ARP (PRSS1: OR = 4.20; 95% CI, 2.14-8.22; P < .001; and SPINK1: OR = 2.30; 95% CI, 1.03-5.13; P = .04). Obstructive risk factors did not differ between children with ARP or CP (33% in both the ARP and CP groups), but toxic/metabolic risk factors were more common in children with ARP (21% overall; 26% in the ARP group and 15% in the CP group; OR = 0.55; 95% CI, 0.31-0.99; P = .046). Pancreatitis-related abdominal pain was a major symptom in 81% of children with ARP or CP within the last year. The disease burden was greater in the CP group compared with the ARP group (more emergency department visits, hospitalizations, and medical, endoscopic, and surgical interventions).

Conclusions and Relevance  Genetic mutations are common in both ARP and CP. Ethnicity and mutations in PRSS1 or SPINK1 may influence the development of CP. The high disease burden in pediatric CP underscores the importance of identifying predisposing factors for progression of ARP to CP in children.

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