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Inherited defect in hereditary pancreatitis.

S A Malik, H Van Kley, W A Knight

    The American Journal of Digestive Diseases
    |November 1, 1977
    PubMed
    Summary
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    The exact genetic defect in hereditary pancreatitis (HP) remains unknown. This study suggests HP may involve structural defects in the pancreatic duct or sphincter of Oddi, potentially treatable with surgery.

    Area of Science:

    • Gastroenterology
    • Medical Genetics

    Background:

    • Hereditary pancreatitis (HP) is a rare genetic disorder characterized by recurrent episodes of acute pancreatitis.
    • The precise inherited defect underlying HP has not been definitively identified, necessitating further investigation into potential genetic and anatomical factors.

    Observation:

    • A new family with multiple HP cases was studied for inherited abnormalities, excluding aminoaciduria, hyperparathyroidism, hyperlipidemia, and chromosomal anomalies.
    • Elevated polyclonal serum IgM levels were observed in affected individuals and some unaffected family members, while serum alpha-1-antitrypsin and trypsin inhibition levels were normal.
    • Significant dilatation and ectasia of the pancreatic duct were noted in the primary patient (propositus).

    Findings:

    • The findings suggest that the genetic basis of HP may involve a spectrum of structural and anatomical abnormalities within the pancreatic ductal system or the sphincter of Oddi.

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  • These defects are hypothesized to lead to intermittent ductal obstruction, enzyme activation, and metaplasia, contributing to the pathogenesis of HP.

    • Implications:

    • The study postulates that HP arises from a variety of structural defects predisposing to ductal obstruction and subsequent pancreatic damage.
    • Early diagnostic imaging to visualize the pancreatic duct is recommended for suspected HP cases, as identified defects may be surgically correctable.