DNA-mutation Analysis in Cyst Fluid of Suspected Intraductal Papillary Mucinous Neoplasia of the Pancreas
Study Details
Study Description
Brief Summary
Diagnostic tools are needed to identify mucinous cysts for further evaluation or follow-up respectively to identify cysts with HGD or invasive cancer at an early stage for surgical resection. Molecular genetic analysis of pancreatic cyst fluid is a new but rapidly evolving method to identify KRAS/GNAS oncogenic driver mutations in mucinous cysts and to identify tumour suppressor gene mutations which are involved in advanced cysts with HGD or carcinoma. The ongoing ZYSTEUS-study tries to implement DNA mutation analysis by Next Generation Sequencing in the diagnostic algorithm of pancreas cyst evaluation. The first aim is to distinguish mucinous from non-mucinous cysts. The second aim is to define relevant tumour suppressor gene mutations which are relevant to distinguish between LGD and HGD/carcinoma in mucinous cysts.
| Condition or Disease | Intervention/Treatment | Phase |
|---|---|---|
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N/A |
Detailed Description
Intraductal papillary mucinous neoplasm (IPMN) with low grade dysplasia (LGD) can progress to high grade dysplasia (HGD) or invasive cancer. Main duct IPMN, mixed type IPMN or branch duct IPMN with high risk stigmata are highly predictive for malignancy. Therefore, patients in good general state should be considered for surgical resection. Guidelines like the International Fukuoka Consensus Guidelines from 2017 or the European evidence-based Guidelines on Pancreatic cyst neoplasms from 2018 provide detailed recommendations on the management of IPMNs by focusing on clinical characteristics, image morphology, cytology and laboratory parameters. However, these applied guidelines still lead to surgical overtreatment of pancreas cysts based on the pathologic outcomes as neither HGD nor carcinoma is found in up to 82.1 % of the resected cysts. Cyst fluid sent for cytology usually provides adequate cellular material for analysis in only 31% of the cases and Endoscopic Ultrasound-guided forceps biopsy has not yet shown to be better than fine needle aspiration. Hence, further diagnostic tools are needed to identify mucinous cysts for further evaluation or follow-up respectively to identify cysts with HGD or invasive cancer at an early stage for surgical resection. Molecular genetic analysis of pancreatic cyst fluid is possibly able to identify KRAS/GNAS oncogenic driver mutations in mucinous cysts and to identify tumour suppressor gene mutations which are involved in advanced cysts with HGD or carcinoma. This workgroup described a high sensitive method of targeted Next Generation Sequencing in pancreas cyst fluid with a limit of detection of allele frequency down to 0.01 %. Further investigations of the ongoing ZYSTEUS-study are focused on the implementation of DNA mutation analysis by NGS in the diagnostic algorithm of pancreas cyst evaluation. The first aim is to reliably distinguish mucinous from non-mucinous cysts respectively main duct IPMN from chronic pancreatitis with main duct dilatation as the absence of KRAS/GNAS-mutations is highly predictive for non-mucinous diseases. The second aim is to define relevant tumour suppressor gene mutations which are relevant to differentiate LGD from HGD/carcinoma in mucinous cysts. DNA mutation analysis will be compared with already established peroperative diagnostic tests of pancreas cyst fluid: Measurement of CEA and lipase as well as cytology.
Study Design
Arms and Interventions
| Arm | Intervention/Treatment |
|---|---|
| Experimental: Suspected mucinous pancreas cyst In all pancreas cysts > 15mm and/or pancreas duct dilatation > 5mm in patients who are fit for surgery EUS-guided pancreas cyst fluid aspiration is conducted. In cyst fluid CEA and lipase examination, cytology and Next Generation Sequencing is performed. After that, the pancreas cyst will be resected and histopathologically analysed. |
Diagnostic Test: Next Generation Sequencing
DNA Mutational Analysis in pancreas cyst fluid concerning KRAS/GNAS-mutations and mutations in tumor supressor genes
Diagnostic Test: CEA and lipase
Measuring CEA and lipase level in pancreas cyst fluid:
CEA > 192 ng/ml and lipase > 200 U/l = mucinous cyst
Diagnostic Test: Cytology
Cytology in pancreas cyst fluid:
mucinous versus non-mucinous cyst; LGD versus HGD/Carcinoma
Diagnostic Test: Histology of resected pancreas cyst
Histology of resected pancreas cyst concerning mucinous versus non-mucinous cyst, IPMN versus non-IPMN and LGD versus HGD/Carcinoma
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Outcome Measures
Primary Outcome Measures
- Patients with a mucinous pancreas cyst [From EUS-guided fine needle aspiration of pancreas cyst fluid up to seven days]
Number of patients with the preoperative diagnosis of a mucinous pancreas cyst (numerator) in correlation with the number of patients with a mucinous pancreas cyst confirmed by surgery (denominator)
- Pancreas cyst with HGD or carcinoma [From EUS-guided fine needle aspiration of pancreas cyst fluid up to seven days]
Number of patients with the preoperative diagnosis of a HGD/carcinoma pancreas cyst (numerator) in correlation with the number of patients with a HGD/carcinoma pancreas cyst confirmed by surgery (denominator)
Eligibility Criteria
Criteria
Inclusion Criteria:
-
pancreas cysts with cyst size > 15mm
-
pancreas with main duct dilation > 5mm
Exclusion Criteria:
- patients who are not fit for surgery
Contacts and Locations
Locations
| Site | City | State | Country | Postal Code | |
|---|---|---|---|---|---|
| 1 | Tertiary referral hospital: Theresienkrankenhaus und St. Hedwig Hospital, Academic | Mannheim | Germany | 68165 |
Sponsors and Collaborators
- Theresienkrankenhaus und St. Hedwig-Klinik GmbH
- University Hospital Heidelberg
Investigators
- Study Chair: Christel Weiß, Prof.Dr., University of Heidelberg, Department of Medical Statistis
Study Documents (Full-Text)
None provided.More Information
Publications
- Amato E, Molin MD, Mafficini A, Yu J, Malleo G, Rusev B, Fassan M, Antonello D, Sadakari Y, Castelli P, Zamboni G, Maitra A, Salvia R, Hruban RH, Bassi C, Capelli P, Lawlor RT, Goggins M, Scarpa A. Targeted next-generation sequencing of cancer genes dissects the molecular profiles of intraductal papillary neoplasms of the pancreas. J Pathol. 2014 Jul;233(3):217-27. doi: 10.1002/path.4344.
- Felsenstein M, Noë M, Masica DL, Hosoda W, Chianchiano P, Fischer CG, Lionheart G, Brosens LAA, Pea A, Yu J, Gemenetzis G, Groot VP, Makary MA, He J, Weiss MJ, Cameron JL, Wolfgang CL, Hruban RH, Roberts NJ, Karchin R, Goggins MG, Wood LD. IPMNs with co-occurring invasive cancers: neighbours but not always relatives. Gut. 2018 Sep;67(9):1652-1662. doi: 10.1136/gutjnl-2017-315062. Epub 2018 Mar 2.
- Kanda M, Sadakari Y, Borges M, Topazian M, Farrell J, Syngal S, Lee J, Kamel I, Lennon AM, Knight S, Fujiwara S, Hruban RH, Canto MI, Goggins M. Mutant TP53 in duodenal samples of pancreatic juice from patients with pancreatic cancer or high-grade dysplasia. Clin Gastroenterol Hepatol. 2013 Jun;11(6):719-30.e5. doi: 10.1016/j.cgh.2012.11.016. Epub 2012 Nov 28.
- Rosenbaum MW, Jones M, Dudley JC, Le LP, Iafrate AJ, Pitman MB. Next-generation sequencing adds value to the preoperative diagnosis of pancreatic cysts. Cancer Cytopathol. 2017 Jan;125(1):41-47. doi: 10.1002/cncy.21775. Epub 2016 Sep 20.
- Singhi AD, McGrath K, Brand RE, Khalid A, Zeh HJ, Chennat JS, Fasanella KE, Papachristou GI, Slivka A, Bartlett DL, Dasyam AK, Hogg M, Lee KK, Marsh JW, Monaco SE, Ohori NP, Pingpank JF, Tsung A, Zureikat AH, Wald AI, Nikiforova MN. Preoperative next-generation sequencing of pancreatic cyst fluid is highly accurate in cyst classification and detection of advanced neoplasia. Gut. 2018 Dec;67(12):2131-2141. doi: 10.1136/gutjnl-2016-313586. Epub 2017 Sep 28.
- Volckmar AL, Endris V, Gaida MM, Leichsenring J, Stögbauer F, Allgäuer M, von Winterfeld M, Penzel R, Kirchner M, Brandt R, Neumann O, Sültmann H, Schirmacher P, Rudi J, Schmitz D, Stenzinger A. Next generation sequencing of the cellular and liquid fraction of pancreatic cyst fluid supports discrimination of IPMN from pseudocysts and reveals cases with multiple mutated driver clones: First findings from the prospective ZYSTEUS biomarker study. Genes Chromosomes Cancer. 2019 Jan;58(1):3-11. doi: 10.1002/gcc.22682. Epub 2018 Oct 17.
- ZYSTEUS-Study