Low penetrance pancreatitis phenotype in a Venezuelan kindred with a PRSS1 R122H mutation

JOP. 2013 Mar 10;14(2):187-9. doi: 10.6092/1590-8577/1276.

Abstract

Context: Hereditary pancreatitis is typically caused by the PRSS1 R122H or N29I mutations resulting in high penetrance (about 80%) autosomal dominant disorder that is usually reported in North America, Northern Europe and Northeast Asia, but not South America, Africa or India.

Case report: Here we report a kindred from Venezuela, South America with the PRSS1 R122H variant. Only the proband, an 11-year old boy with severe chronic pancreatitis, and a maternal grandmother with pancreatitis at age 60 years (confirmed PRSS1 R122H), are symptomatic.

Conclusions: Issues of mutation prevalence, non-penetrance, and disease recognition in various countries are discussed.

Publication types

  • Case Reports

MeSH terms

  • Amino Acid Substitution / physiology
  • Arginine / genetics
  • Child
  • Family
  • Female
  • Histidine / genetics
  • Humans
  • Male
  • Middle Aged
  • Mutation, Missense* / physiology
  • Pancreatitis, Chronic / genetics*
  • Pedigree
  • Penetrance*
  • Phenotype
  • Trypsin / genetics*
  • Venezuela

Substances

  • Histidine
  • Arginine
  • PRSS1 protein, human
  • Trypsin