The variable phenotype of the p.A16V mutation of cationic trypsinogen (PRSS1) in pancreatitis families

Christopher J Grocock, Vinciane Rebours, Myriam Delhaye, Ake Andren-Sandberg, Frank U Weiss, Roger Mountford, Matthew Harcus, Edyta Niemczyck, Louis Vitone, Susanna Dodd, Maiken T Joergensen, Rudolf W Ammann, Ove Schaffalitzky de Muckadell, Jane V Butler, Philip Burgess, Bronwyn Kerr, Richard Charnley, Robert Sutton, Michael Raraty, Jacques DeviereDavid Whitcomb, John Neoptolemos, Philippe Levy, Markus M Lerch, William Greenhalf

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Abstrakt

OBJECTIVE: To characterise the phenotypes associated with the p.A16V mutation of PRSS1. DESIGN: Clinical and epidemiological data were collected for any family in which a p.A16V mutation was identified, either referred directly to the European Registry of Hereditary Pancreatitis and Familial Pancreatic Cancer or via a collaborator. DNA samples were tested for mutations in PRSS1, SPINK1, CFTR and CTRC. PATIENTS: Participants were recruited on the basis of either family history of pancreatitis (acute or chronic), or the results of genetic testing. Families were categorised as having Hereditary Pancreatitis (HP); idiopathic disease; or pancreatitis in a single generation. HP was defined as 2 cases in 2 generations. MAIN OUTCOME MEASURES: Onset of painful episodes of pancreatitis, death from pancreatic cancer, diagnosis of diabetes mellitus and exocrine pancreatic failure. RESULTS: Ten families with p.A16V mutations were identified (22 affected individuals); six HP families, three with idiopathic disease and one with only a single generation affected. The median age of onset, ignoring non-penetrants, was 10 years (95% CI: 5,25). There were 8 confirmed cases of exocrine failure, 4 of whom also had diabetes mellitus. There were 3 pancreatic cancer cases. Two of these were confirmed as p.A16V carriers, only one of whom was affected by pancreatitis. p.A16V pancreatitics were compared to affected individuals with p.R122H, p.N29I and no PRSS1 mutation. No significant differences were proven using logrank or Mann-Whitney-U tests. CONCLUSIONS: Penetrance of p.A16V is highly variable and family dependent, suggesting it contributes to a multigenic inheritance of a predisposition to pancreatitis.
OriginalsprogEngelsk
TidsskriftGut
Vol/bind59
Sider (fra-til)357-363
ISSN0017-5749
DOI
StatusUdgivet - 2010

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Bibliografisk note

Originally published online December 1, 2009

Citationsformater

Grocock, C. J., Rebours, V., Delhaye, M., Andren-Sandberg, A., Weiss, F. U., Mountford, R., Harcus, M., Niemczyck, E., Vitone, L., Dodd, S., Joergensen, M. T., Ammann, R. W., Schaffalitzky de Muckadell, O., Butler, J. V., Burgess, P., Kerr, B., Charnley, R., Sutton, R., Raraty, M., ... Greenhalf, W. (2010). The variable phenotype of the p.A16V mutation of cationic trypsinogen (PRSS1) in pancreatitis families. Gut, 59, 357-363. https://doi.org/10.1136/gut.2009.186817