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Multicenter Approach to Recurrent Acute and Chronic Pancreatitis in the United States: The North American Pancreatitis Study 2 (NAPS2)Whitcomb D.C.a, b · Yadav D.a · Adam S.a · Hawes R.H.c · Brand R.E.d · Anderson M.A.e · Money M.E.f · Banks P.A.g · Bishop M.D.h · Baillie J.i · Sherman S.j · DiSario J.k · Burton F.R.l · Gardner T.B.m · Amann S.T.n · Gelrud A.o · Lo S.L.p · DeMeo M.T.q · Steinberg W.M.r · Kochman M.L.s · Etemad B.t · Forsmark C.E.u · Elinoff B.a · Greer J.B.a · O’Connell M.a · Lamb J.a · Barmada M.M.b
Departments of aMedicine and bHuman Genetics, University of Pittsburgh, Pittsburgh, Pa.; cDigestive Disease Center, Medical University of South Carolina, Charleston, S.C.; dDepartment of Medicine, Evanston Northwestern Healthcare, Evanston, Ill.; eUniversity of Michigan, Ann Arbor, Mich.; fWashington County Hospital, Hagerstown, Md.; gDivision of Gastroenterology, Brigham and Women’s Hospital, Boston, Mass.; hDivision of Gastroenterology and Hepatology, Mayo Clinic, Jacksonville, Fla.; iDepartment of Medicine, Duke University Medical Center, Durham, N.C.; jDepartment of Medicine, Indiana University Medical Center, Indianapolis, Ind.; kDepartment of Medicine, University of Utah Health Science Center, Salt Lake City, Utah; lDepartment of Internal Medicine, St. Louis University School of Medicine, St. Louis, Mo.; mDartmouth-Hitchcock Medical Center, Hanover, N.H.; nNorth Mississippi Medical Center, Tupelo, Miss.; oDepartment of Internal Medicine, University of Cincinnati, Cincinnati, Ohio; pDepartment of Medicine, Cedars-Sinai Medical Center, University of California, Los Angeles, Calif.; qDepartment of Medicine, Rush University Medical Center, Chicago, Ill.; rWashington Hospital Center, Washington, D.C.; sDepartment of Medicine, University of Pennsylvania, Philadelphia, Pa.; tDepartment of Gastroenterology and Hepatology, Ochsner Medical Center, New Orleans, La., and uDepartment of Medicine, University of Florida, Gainesville, Fla., USA Corresponding Author
David C. Whitcomb, MD, PhD
UPMC Presbyterian, M2 C-Wing
200 Lothrop Street, Pittsburgh, PA 15213 (USA)
Tel. +1 412 648 9604, Fax +1 412 383 7236
Background: Recurrent acute pancreatitis (RAP) and chronic pancreatitis (CP) are complex syndromes associated with numerous etiologies, clinical variables and complications. We developed the North American Pancreatitis Study 2 (NAPS2) to be sufficiently powered to understand the complex environmental, metabolic and genetic mechanisms underlying RAP and CP. Methods: Between August 2000 and September 2006, a consortium of 20 expert academic and private sites prospectively ascertained 1,000 human subjects with RAP or CP, plus 695 controls (spouse, family, friend or unrelated). Standardized questionnaires were completed by both the physicians and study subjects and blood was drawn for genomic DNA and biomarker studies. All data were double-entered into a database and systematically reviewed to minimize errors and include missing data. Results: A total of 1,000 subjects (460 RAP, 540 CP) and 695 controls who completed consent forms and questionnaires and donated blood samples comprised the final dataset. Data were organized according to diagnosis, supporting documentation, etiological classification, clinical signs and symptoms (including pain patterns and duration, and quality of life), past medical history, family history, environmental exposures (including alcohol and tobacco use), medication use and therapeutic interventions. Upon achieving the target enrollment, data were organized and classified to facilitate future analysis. The approaches, rationale and datasets are described, along with final demographic results. Conclusion: The NAPS2 consortium has successfully completed a prospective ascertainment of 1,000 subjects with RAP and CP from the USA. These data will be useful in elucidating the environmental, metabolic and genetic conditions, and to investigate the complex interactions that underlie RAP and CP.
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