Vitone L J, Greenhalf W, Howes N R, Neoptolemos J P
Division of Surgery & Oncology, The University of Liverpool, United Kingdom.
Rocz Akad Med Bialymst. 2005;50:73-84.
Hereditary pancreatitis is an autosomal dominant disease with incomplete penetrance (80%), accounting for approximately 1% of all cases of pancreatitis. It is characterized by the onset of recurrent attacks of acute pancreatitis in childhood and frequent progression to chronic pancreatitis. Whitcomb et al. identified the cationic trypsinogen gene (PRSS1) on chromosome 7q35 as the site of the mutation that causes hereditary pancreatitis. The European registry of hereditary pancreatitis and familial pancreatic cancer (EUROPAC) aims to identify and make provisions for those affected by hereditary pancreatitis and familial pancreatic cancer. The most common mutations in hereditary pancreatitis are R122H, N29I and A16V but many families have been described with clinically defined hereditary pancreatitis where there is no PRSS1 mutation. It is known that the cumulative lifetime risk (to age 70 years) of pancreatic cancer is 40% in individuals with hereditary pancreatitis. This subset of individuals form an ideal group for the development of a screening programme aimed at detecting pancreatic cancer at an early stage in an attempt to improve the presently poor long-term survival. Current screening strategies involve multimodality imaging (computed tomography, endoluminal ultrasound) and endoscopic retrograde cholangiopancreatography for pancreatic juice collection followed by molecular analysis of the DNA extracted from the juice. The potential benefit of screening (curative resection) must be balanced against the associated morbidity and mortality of surgery. Philosophically, the individual's best interest must be sought in light of the latest advances in medicine and science following discussions with a multidisciplinary team in specialist pancreatic centres.
遗传性胰腺炎是一种常染色体显性疾病,外显率不完全(80%),约占所有胰腺炎病例的1%。其特征是在儿童期开始出现复发性急性胰腺炎发作,并经常进展为慢性胰腺炎。惠特科姆等人确定位于7号染色体q35上的阳离子胰蛋白酶原基因(PRSS1)是导致遗传性胰腺炎的突变位点。欧洲遗传性胰腺炎和家族性胰腺癌登记处(EUROPAC)旨在识别受遗传性胰腺炎和家族性胰腺癌影响的人群并为他们提供帮助。遗传性胰腺炎最常见的突变是R122H、N29I和A16V,但许多临床上定义为遗传性胰腺炎的家族并未发现PRSS1突变。已知遗传性胰腺炎患者患胰腺癌的累积终生风险(至70岁)为40%。这部分人群构成了开展筛查计划的理想群体,该计划旨在早期检测胰腺癌,以改善目前较差的长期生存率。目前的筛查策略包括多模态成像(计算机断层扫描、腔内超声)以及用于收集胰液的内镜逆行胰胆管造影,随后对从胰液中提取的DNA进行分子分析。筛查的潜在益处(根治性切除)必须与手术相关的发病率和死亡率相权衡。从理念上讲,在与胰腺专科中心的多学科团队进行讨论后,必须根据医学和科学的最新进展来寻求符合个人最佳利益的方案。