Contribution of the CFTR gene, the pancreatic secretory trypsin inhibitor gene (SPINK1) and the cationic trypsinogen gene (PRSS1) to the etiology of recurrent pancreatitis.
Acute recurrent/chronic pancreatitis (CP) is a complex multigenic disease. This is a case-control study consisting of 25 Greek patients with CP and a control population of 236 healthy Greek subjects. The whole coding area and neighboring intronic regions of the three genes were screened. Seventeen of 25 patients (68%) had mutations in the cystic fibrosis transmembrane conductance regulator (CFTR) gene: nine compound heterozygotes with either mild or severe mutations and eight heterozygotes. Four patients (16%) carried CFTR-modulating haplotypes V470-TG11-T5 and V470-TG12-T7. All were negative for PRSS1 gene mutations, while variants c.486C/T and c.738C/T were found in nine patients each, three homozygotes for the minor alleles. Two carried SPINK1 gene mutation p.N34S, one being transheterozygote with CFTR mutation p.F1052V. The promoter variant -253T>C was found in four individuals (one homozygous for the minor allele), all four being transheterozygotes with mutations in the CFTR gene as well. Finally two carried c.272C/T in the 3' untranslated region, one being a p.N34S carrier as well. In total, 80% (20/25) of patients had a molecular defect in one or both of the CFTR and SPINK1 genes, suggesting that mutations/variants in the CFTR plus or minus mutations in the SPINK1, but not the PRSS1 gene, may confer a high risk for recurrent pancreatitis.
Tzetis
M
M
Department of Medical Genetics, Medical School, Athens University, Athens, Greece. mtzeti@cc.uoa.gr
Kaliakatsos
M
M
Fotoulaki
M
M
Papatheodorou
A
A
Doudounakis
S
S
Tsezou
A
A
Makrythanasis
P
P
Kanavakis
E
E
Nousia-Arvanitakis
S
S
D000293:Adolescent; D000328:Adult; D002352:Carrier Proteins / Q000235:genetics*; D016022:Case-Control Studies; D002648:Child; D002675:Child, Preschool; D019005:Cystic Fibrosis Transmembrane Conductance Regulator / Q000235:genetics*; D004252:DNA Mutational Analysis; D005260:Female; D020022:Genetic Predisposition to Disease; D006801:Humans; D008297:Male; D008875:Middle Aged; D009154:Mutation; D050500:Pancreatitis, Chronic / Q000235:genetics*; D014357:Trypsin; D014359:Trypsin Inhibitor, Kazal Pancreatic; D014362:Trypsinogen / Q000235:genetics*
D002352:Carrier Proteins; C486642:SPINK1 protein, human; D019005:Cystic Fibrosis Transmembrane Conductance Regulator; D014359:Trypsin Inhibitor, Kazal Pancreatic; D014362:Trypsinogen; C489303:PRSS1 protein, human; D014357:Trypsin