TY - JOUR T1 - Misfolding cationic trypsinogen variant p.L104P causes hereditary pancreatitis JF - Gut JO - Gut SP - 1727 LP - 1728 DO - 10.1136/gutjnl-2016-313451 VL - 66 IS - 9 AU - Balázs Csaba Németh AU - Árpád V Patai AU - Miklós Sahin-Tóth AU - Péter Hegyi Y1 - 2017/09/01 UR - http://gut.bmj.com/content/66/9/1727.abstract N2 - We read the recent publication of Schnúr et al1 with great interest, in which the authors proposed that a subset of human cationic trypsinogen (PRSS1) variants caused chronic pancreatitis by inducing misfolding and endoplasmic reticulum (ER) stress rather than increased intrapancreatic trypsin activity. PRSS1 variants that promote premature trypsinogen activation are the strongest known risk factors for chronic pancreatitis; often associated with autosomal-dominant hereditary pancreatitis. ER-stress causing PRSS1 variants, on the other hand, have been mostly found in sporadic disease with no family history suggesting these variants might confer lower risk.To refute this notion, here we report a hereditary pancreatitis family of Hungarian origin carrying the heterozygous c.311T>C (p.L104P) PRSS1 variant which was recently demonstrated to induce misfolding and ER stress.2 The index patient, his mother and first cousin developed recurrent acute or chronic pancreatitis in this family (figure 1 … ER -