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Imamura T, Ohgi K, Mori K, Ashida R, Yamada M, Otsuka S, Uesaka K, Sugiura T. Surrogacy of Recurrence-free Survival for Overall Survival as an Endpoint of Clinical Trials of Perioperative Adjuvant Therapy in Hepatobiliary-pancreatic Cancers: A Retrospective Study and Meta-analysis. Ann Surg 2024; 279:1025-1035. [PMID: 37638472 DOI: 10.1097/sla.0000000000006084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/29/2023]
Abstract
OBJECTIVE To assess the correlation between recurrence-free survival (RFS) and overall survival (OS) in the hepatobiliary-pancreatic (HBP) surgical setting to validate RFS as a surrogate endpoint. BACKGROUND Reliable surrogate endpoints for OS are still limited in the field of HBP surgery. METHODS We analyzed patients who underwent curative resection for HBP disease [986 patients with pancreatic ductal adenocarcinoma (PDAC), 1168 with biliary tract cancer (BTC), 1043 with hepatocellular carcinoma, and 1071 with colorectal liver metastasis] from September 2002 to June 2022. We also conducted meta-analyses of randomized controlled trials of neoadjuvant or adjuvant therapy to validate the surrogacy in PDAC and BTC. RESULTS Correlation coefficients between RFS and OS were low for hepatocellular carcinoma ( p = 0.67) and colorectal liver metastasis ( p = 0.53) but strong for PDAC ( p = 0.80) and BTC ( p = 0.75). In a landmark analysis, the concordance rates between survival or death at 5 years postoperatively and the presence or absence of recurrence at each time point (1, 2, 3, and 4 years) were 50%, 70%, 74%, and 77% for PDAC and 54%, 67%, 73%, and 78% for BTC, respectively, both increasing and reaching a plateau at 3 years. In a meta-analysis, the correlation coefficients for the RFS hazard ratio and OS hazard ratio in PDAC and BTC were p = 0.88 ( P < 0.001) and p = 0.87 ( P < 0.001), respectively. CONCLUSIONS Three-year RFS can be a reliable surrogate endpoint for OS in clinical trials of neoadjuvant or adjuvant therapy for PDAC and BTC.
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Affiliation(s)
- Taisuke Imamura
- Division of HepatoBiliary-Pancreatic Surgery, Shizuoka Cancer Center, Shizuoka, Japan
| | - Katsuhisa Ohgi
- Division of HepatoBiliary-Pancreatic Surgery, Shizuoka Cancer Center, Shizuoka, Japan
| | - Keita Mori
- Clinical Research Center, Shizuoka Cancer Center, Shizuoka, Japan
| | - Ryo Ashida
- Division of HepatoBiliary-Pancreatic Surgery, Shizuoka Cancer Center, Shizuoka, Japan
| | - Mihoko Yamada
- Division of HepatoBiliary-Pancreatic Surgery, Shizuoka Cancer Center, Shizuoka, Japan
| | - Shimpei Otsuka
- Division of HepatoBiliary-Pancreatic Surgery, Shizuoka Cancer Center, Shizuoka, Japan
| | - Katsuhiko Uesaka
- Division of HepatoBiliary-Pancreatic Surgery, Shizuoka Cancer Center, Shizuoka, Japan
| | - Teiichi Sugiura
- Division of HepatoBiliary-Pancreatic Surgery, Shizuoka Cancer Center, Shizuoka, Japan
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Hu W, Duan Z, Zhang Y, Liu J, Bao J, Gao R, Tang Y, Liu T, Xiong H, Li W, Fu X, Liao S, Fang L, Liang B. Remission from the 5-Fu-Based Chemotherapy to Gemcitabine-Based Chemotherapy-Based on the Pathological Classification of Periampullary Carcinoma: A Case Report and Literature Review. Onco Targets Ther 2022; 15:891-896. [PMID: 36046466 PMCID: PMC9423042 DOI: 10.2147/ott.s372053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Accepted: 08/03/2022] [Indexed: 11/23/2022] Open
Abstract
Background Periampullary carcinoma, which includes ampullary carcinoma, pancreatic head cancer, distal common bile duct cancer, and duodenal papillary cancer, is a relatively rare malignancy with uncertain therapeutic options. Although several studies have investigated the efficacy of multiple adjuvant chemotherapy regimens for periampullary carcinoma treatment, the optimal regimen remains to be determined. The inherent heterogeneity of the mucosal origin divides periampullary carcinoma into intestinal and pancreaticobiliary types. Therefore, the selection of chemotherapy regimens based on pathological type may have potential therapeutic significance. Case Presentation A 72-year-old woman with moderately differentiated periampullary adenocarcinoma experienced disease progression after receiving FOLFOX regimen. Subsequently, the sample was subtyped first by H&E evaluation and then by the evaluation of an IHC panel composed of CK20, CDX2, MUC1, MUC2, and MUC5AC. The pathologists concluded that the patient’s sample was of the pancreaticobiliary (PB) subtype. The subsequent change to gemcitabine plus S-1 adjuvant therapy achieved remission of liver metastases based on the pathological classification of the cancer. Conclusion Based on the pathological classification, adjuvant chemotherapy with gemcitabine may be beneficial for patients with PB subtype periampullary carcinoma. 5-Fu-based adjuvant chemotherapy may be beneficial for patients with intestinal subtype periampullary carcinoma.
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Affiliation(s)
- Wei Hu
- Department of General Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, 330006, People’s Republic of China
| | - Zhiqing Duan
- Department of General Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, 330006, People’s Republic of China
| | - Yinuo Zhang
- Department of General Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, 330006, People’s Republic of China
| | - Jing Liu
- Department of Pathology, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, 330006, People’s Republic of China
| | - Jing Bao
- Department of General Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, 330006, People’s Republic of China
| | - Ruqing Gao
- Department of General Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, 330006, People’s Republic of China
| | - Yajie Tang
- Department of General Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, 330006, People’s Republic of China
| | - Tiande Liu
- Department of General Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, 330006, People’s Republic of China
| | - Hu Xiong
- Department of General Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, 330006, People’s Republic of China
| | - Wen Li
- Department of General Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, 330006, People’s Republic of China
| | - Xiaowei Fu
- Department of General Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, 330006, People’s Republic of China
| | - Shousheng Liao
- Department of Pathology, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, 330006, People’s Republic of China
| | - Lu Fang
- Department of General Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, 330006, People’s Republic of China
| | - Bo Liang
- Department of General Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, 330006, People’s Republic of China
- Correspondence: Bo Liang; Lu Fang, Email ;
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A systematic review and network meta-analysis of phase III randomised controlled trials for adjuvant therapy following resection of pancreatic ductal adenocarcinoma (PDAC). HPB (Oxford) 2020; 22:649-659. [PMID: 31894014 DOI: 10.1016/j.hpb.2019.12.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 11/28/2019] [Accepted: 12/02/2019] [Indexed: 02/06/2023]
Abstract
BACKGROUND Several randomised controlled trials (RCTs) have reported various systemic adjuvant therapy regimens following resection of pancreatic ductal adenocarcinoma (PDAC). The most commonly applied include modified FOLFRINOX (mFFX), Gemcitabine/Capecitabine (GemCap) and S1, usually compared to gemcitabine (Gem) alone. However, many of these regimens have not been directly compared in RCTs. This network meta-analysis aims to characterise the impact of adjuvant therapies on overall and disease-free survival in patients having resection of PDAC. METHODS A systematic review was conducted using MEDLINE, EMBASE, Cochrane Central and American Society of Clinical Oncology (ASCO) abstracts to identify published phase III RCTs articles up to 9th May 2019 that examined adjuvant systemic therapy in resected pancreatic cancer. Data including study characteristics and outcomes including overall survival (OS) and disease-free survival (DFS) were extracted. Indirect comparisons of all regimens were simultaneously compared using random-effects network meta-analyses (NMA) which maintains randomisation within trials. RESULTS Twelve phase III RCTs involving 4947 patients and nine different regimens (5-Flourouracil/Folinic acid (5-FU/FA), Gemcitabine, Gemcitabine/Erlotinib (GemErl), GemCap), mFFX, S1, chemoradiotherapy (CRT), CRT with either 5-FU or Gemcitabine) were identified. S1 was ranked best for overall and disease-free survival followed by mFFX. Whilst there were no significant difference between S1 and mFFX for overall survival (mean difference: 1.6 months, p = 0.8), S1 had significantly longer disease-free survival than mFFX (mean difference: 2.8 months, p < 0.001). Furthermore, S1 was ranked best for lowest overall and haematological grade 3/4 toxicities. CONCLUSION This network meta-analysis demonstrates that chemotherapy with S1 or mFFX is superior to GemCap for adjuvant treatment for PDAC, improves survival after surgical resection and should be considered as reasonable standard treatment options in the adjuvant setting and as control arm for future adjuvant clinical trials.
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Li G, Chen JZ, Chen S, Lin SZ, Pan W, Meng ZW, Cai XR, Chen YL. Development and validation of novel nomograms for predicting the survival of patients after surgical resection of pancreatic ductal adenocarcinoma. Cancer Med 2020; 9:3353-3370. [PMID: 32181599 PMCID: PMC7221449 DOI: 10.1002/cam4.2959] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 02/17/2020] [Accepted: 02/19/2020] [Indexed: 12/13/2022] Open
Abstract
Background/Aims Pancreatic ductal adenocarcinoma (PDAC) is associated with high mortality, even after surgical resection. The existing predictive models for survival have limitations. This study aimed to develop better nomograms for predicting overall survival (OS) and cancer‐specific survival (CSS) in PDAC patients after surgery. Methods A total of 6323 PDAC patients were retrospectively recruited from the Surveillance, Epidemiology, and End Results (SEER) database and randomly allocated into training, validation, and test cohorts. Multivariate Cox regression analysis was conducted to identify significant independent factors for OS and CSS, which were used for construction of nomograms. The performance was evaluated, validated, and compared with that of the 8th edition AJCC staging system. Results Ten independent factors were significantly correlated with OS and CSS. The 1‐, 3‐, and 5‐year OS rates were 40%, 20%, and 15%, and 1‐, 3‐, and 5‐year CSS rates were 45%, 24%, and 19%, respectively. The nomograms were calibrated well, with c‐indexes of 0.640 for OS and 0.643 for CSS, respectively. Notably, relative to the 8th edition AJCC staging system, the nomograms were able to stratify each AJCC stage into three prognostic subgroups for more robust risk stratification. Furthermore, the nomograms achieved significant clinical validity, exhibiting wide threshold probabilities and high net benefit. Performance assessment also showed high predictive accuracy and reliability. Conclusions The predictive ability and reliability of the established nomograms have been validated, and therefore, these nomograms hold potential as novel approaches to predicting survival and assessing survival risks for PDAC patients after surgery.
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Affiliation(s)
- Ge Li
- Department of Hepatobiliary Surgery and Fujian Institute of Hepatobiliary Surgery, Fujian Medical University Union Hospital, Fuzhou, China
| | - Jiang-Zhi Chen
- Department of Hepatobiliary Surgery and Fujian Institute of Hepatobiliary Surgery, Fujian Medical University Union Hospital, Fuzhou, China
| | - Shi Chen
- Department of Hepatobiliary Surgery, Fujian Provincial Hospital, Fuzhou, China
| | - Sheng-Zhe Lin
- Department of Hepatobiliary Surgery and Fujian Institute of Hepatobiliary Surgery, Fujian Medical University Union Hospital, Fuzhou, China
| | - Wei Pan
- Department of Hepatobiliary Surgery and Fujian Institute of Hepatobiliary Surgery, Fujian Medical University Union Hospital, Fuzhou, China
| | - Ze-Wu Meng
- Department of Hepatobiliary Surgery and Fujian Institute of Hepatobiliary Surgery, Fujian Medical University Union Hospital, Fuzhou, China
| | - Xin-Ran Cai
- Department of Hepatobiliary Surgery and Fujian Institute of Hepatobiliary Surgery, Fujian Medical University Union Hospital, Fuzhou, China
| | - Yan-Ling Chen
- Department of Hepatobiliary Surgery and Fujian Institute of Hepatobiliary Surgery, Fujian Medical University Union Hospital, Fuzhou, China
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Tao L, Su L, Yuan C, Ma Z, Zhang L, Bo S, Niu Y, Lu S, Xiu D. Postoperative metastasis prediction based on portal vein circulating tumor cells detected by flow cytometry in periampullary or pancreatic cancer. Cancer Manag Res 2019; 11:7405-7425. [PMID: 31496801 PMCID: PMC6689556 DOI: 10.2147/cmar.s210332] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Accepted: 06/20/2019] [Indexed: 12/24/2022] Open
Abstract
Purpose The aim of this study was to evaluate the value of flow cytometry (FCM) detection of portal vein circulating tumor cells (CTCs) in predicting postoperative metastasis. Methods Samples of portal venous blood and peripheral blood were collected from 39 patients during surgery, and CTCs were detected by FCM, with confirmation by laser confocal microscopy and single-cell sequencing. Results Among all patients, a portal EpCAM+CD45- percentage ≥24.5×10−4 (P=0.06), peripheral EpCAM+CD45- count ≥97/5 mL (P=0.034), peripheral EpCAM+CD45- percentage ≥4.4×10−4 (P=0.042), and CA242≥3.5 U/mL (P=0.027) were significant predictors of metastasis. Further analysis showed that the portal EpCAM+CD45- ratio ≥24.5×10−4 is a predictor of metastasis (P=0.025) in pancreatic cancer after curative resection. Conclusion CTCs detected by FCM in portal venous blood are of significant value for the prediction of postoperative metastasis in pancreatic or periampullary tumors.
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Affiliation(s)
- Lianyuan Tao
- Department of General Surgery, Peking University Third Hospital, Beijing 100191, People's Republic of China.,Department of Hepatobiliary Surgery, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, School of Clinical Medicine, Henan University, Zhengzhou, Henan 450003, People's Republic of China
| | - Li Su
- Medical and Health Analytical Center, Peking University Health Science Center, Beijing 100191, People's Republic of China
| | - Chunhui Yuan
- Department of General Surgery, Peking University Third Hospital, Beijing 100191, People's Republic of China
| | - Zhaolai Ma
- Department of General Surgery, Peking University Third Hospital, Beijing 100191, People's Republic of China
| | - Lingfu Zhang
- Department of General Surgery, Peking University Third Hospital, Beijing 100191, People's Republic of China
| | - Shiping Bo
- Department of Clinical Research, Yikon Genomics Co. Ltd., Shanghai, People's Republic of China
| | - Yunyun Niu
- Department of Clinical Research, Yikon Genomics Co. Ltd., Shanghai, People's Republic of China
| | - Sijia Lu
- Department of Clinical Research, Yikon Genomics Co. Ltd., Shanghai, People's Republic of China
| | - Dianrong Xiu
- Department of General Surgery, Peking University Third Hospital, Beijing 100191, People's Republic of China
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Huang L, Balavarca Y, van der Geest L, Lemmens V, Van Eycken L, De Schutter H, Johannesen TB, Zadnik V, Primic-Žakelj M, Mägi M, Grützmann R, Besselink MG, Schrotz-King P, Brenner H, Jansen L. Development and validation of a prognostic model to predict the prognosis of patients who underwent chemotherapy and resection of pancreatic adenocarcinoma: a large international population-based cohort study. BMC Med 2019; 17:66. [PMID: 30905320 PMCID: PMC6432746 DOI: 10.1186/s12916-019-1304-y] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Accepted: 03/11/2019] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Pancreatic cancer (PaC) remains extremely lethal worldwide even after resection. PaC resection rates are low, making prognostic studies in resected PaC difficult. This large international population-based study aimed at exploring factors associated with survival in patients with resected TNM stage I-II PaC receiving chemotherapy and at developing and internationally validating a survival-predicting model. METHODS Data of stage I-II PaC patients resected and receiving chemotherapy in 2003-2014 were obtained from the national cancer registries of Belgium, the Netherlands, Slovenia, and Norway, and the US Surveillance, Epidemiology, and End Results (SEER)-18 Program. Multivariable Cox proportional hazards models were constructed to investigate the associations of patient and tumor characteristics with overall survival, and analysis was performed in each country respectively without pooling. Prognostic factors remaining after backward selection in SEER-18 were used to build a nomogram, which was subjected to bootstrap internal validation and external validation using the European datasets. RESULTS A total of 11,837 resected PaC patients were analyzed, with median survival time of 18-23 months and 3-year survival rates of 21-31%. In the main analysis, patient age, tumor T stage, N stage, and differentiation were associated with survival across most countries, with country-specific association patterns and strengths. However, tumor location was mostly not significantly associated with survival. Resection margin, hospital type, tumor size, positive and harvested lymph node number, lymph node ratio, and comorbidity number were associated with survival in certain countries where the information was available. A median survival time- and 1-, 2-, 3-, and 5-year survival probability-predictive nomogram incorporating the backward-selected variables in the main analysis was established. It fits each European national cohort similarly well. Calibration curves showed very good agreement between nomogram-prediction and actual observation. The concordance index of the nomogram (0.60) was significantly higher than that of the T and N stage-based model (0.56) for predicting survival. CONCLUSIONS In these large international population-based cohorts, patients with resected PaC receiving chemotherapy have distinct characteristics independently associated with survival, with country-specific patterns and strengths. A robust benchmark population-based survival-predicting model is established and internationally validated. Like previous models predicting survival in resected PaC, our nomogram performs modestly.
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Affiliation(s)
- Lei Huang
- Division of Clinical Epidemiology and Aging Research, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 581, 69120 Heidelberg, Germany
- Medical Faculty Heidelberg, Heidelberg University, Heidelberg, Germany
| | - Yesilda Balavarca
- Division of Preventive Oncology, German Cancer Research Center (DKFZ) and National Center for Tumor Diseases (NCT), Heidelberg, Germany
| | - Lydia van der Geest
- Netherlands Cancer Registry (NCR), Netherlands Comprehensive Cancer Organization (IKNL), Utrecht, The Netherlands
| | - Valery Lemmens
- Netherlands Cancer Registry (NCR), Netherlands Comprehensive Cancer Organization (IKNL), Utrecht, The Netherlands
| | | | | | - Tom B. Johannesen
- Registry Department, The Cancer Registry of Norway (CRN), Oslo, Norway
| | - Vesna Zadnik
- Epidemiology and Cancer Registry, Institute of Oncology Ljubljana, Ljubljana, Slovenia
| | - Maja Primic-Žakelj
- Epidemiology and Cancer Registry, Institute of Oncology Ljubljana, Ljubljana, Slovenia
| | - Margit Mägi
- Estonian Cancer Registry, National Institute for Health Development, Tallinn, Estonia
| | - Robert Grützmann
- Department of Surgery, Friedrich-Alexander-University Erlangen-Nürnberg, Erlangen, Germany
| | - Marc G. Besselink
- Dutch Pancreatic Cancer Group (DPCG), Department of Surgery, Cancer Center Amsterdam, Amsterdam University Medical Centers (UMC), Academic Medical Center (AMC), University of Amsterdam, Amsterdam, The Netherlands
| | - Petra Schrotz-King
- Division of Preventive Oncology, German Cancer Research Center (DKFZ) and National Center for Tumor Diseases (NCT), Heidelberg, Germany
| | - Hermann Brenner
- Division of Clinical Epidemiology and Aging Research, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 581, 69120 Heidelberg, Germany
- Division of Preventive Oncology, German Cancer Research Center (DKFZ) and National Center for Tumor Diseases (NCT), Heidelberg, Germany
- German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Lina Jansen
- Division of Clinical Epidemiology and Aging Research, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 581, 69120 Heidelberg, Germany
- German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), Heidelberg, Germany
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Ethun CG, Lopez-Aguiar AG, Pawlik TM, Poultsides G, Idrees K, Fields RC, Weber SM, Cho C, Martin RC, Scoggins CR, Shen P, Schmidt C, Hatzaras I, Bentrem D, Ahmad S, Abbott D, Kim HJ, Merchant N, Staley CA, Kooby DA, Maithel SK. Distal Cholangiocarcinoma and Pancreas Adenocarcinoma: Are They Really the Same Disease? A 13-Institution Study from the US Extrahepatic Biliary Malignancy Consortium and the Central Pancreas Consortium. J Am Coll Surg 2016; 224:406-413. [PMID: 28017812 DOI: 10.1016/j.jamcollsurg.2016.12.006] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2016] [Accepted: 12/12/2016] [Indexed: 12/12/2022]
Abstract
BACKGROUND Distal cholangiocarcinoma (DC) and pancreatic ductal adenocarcinoma (PDAC) are often managed as 1 entity, yet direct comparisons are lacking. Our aim was to use 2 large multi-institutional databases to assess treatment, pathologic, and survival differences between these diseases. STUDY DESIGN This study included patients with DC and PDAC who underwent curative-intent pancreaticoduodenectomy from 2000 to 2015 at 13 institutions comprising the US Extrahepatic Biliary Malignancy and Central Pancreas Consortiums. Primary endpoint was disease-specific survival (DSS). RESULTS Of 1,463 patients, 224 (15%) had DC and 1,239 (85%) had PDAC. Compared with PDAC, DC patients were less likely to be margin-positive (19% vs 25%; p = 0.005), lymph node (LN)-positive (55% vs 69%; p < 0.001), and receive adjuvant therapy (57% vs 71%; p < 0.001). Of DC patients treated with adjuvant therapy, 62% got gemcitabine alone and 16% got gemcitabine/cisplatin. Distal cholangiocarcinoma was associated with improved median DSS (40 months) compared with PDAC (22 months; p < 0.001), which persisted on multivariable analysis (hazard ratio 0.65; 95% CI 0.50 to 0.84; p = 0.001). Lymph node involvement was the only factor independently associated with decreased DSS for both DC and PDAC. The DC/LN-positive patients had similar DSS as PDAC/LN-negative patients (p = 0.74). Adjuvant therapy (chemotherapy ± radiation) was associated with improved median DSS for PDAC/LN-positive patients (21 vs 13 months; p = 0.001), but not for DC patients (38 vs 40 months; p = 0.62), regardless of LN status. CONCLUSIONS Distal cholangiocarcinoma and pancreatic ductal adenocarcinoma are distinct entities. Distal cholangiocarcinoma has a favorable prognosis compared with PDAC, yet current adjuvant therapy regimens are only associated with improved survival in PDAC, not DC. Therefore, treatment paradigms used for PDAC should not be extrapolated to DC, despite similar operative approaches, and novel therapies for DC should be explored.
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Affiliation(s)
- Cecilia G Ethun
- Division of Surgical Oncology, Department of Surgery, Winship Cancer Institute, Emory University, Atlanta, GA
| | - Alexandra G Lopez-Aguiar
- Division of Surgical Oncology, Department of Surgery, Winship Cancer Institute, Emory University, Atlanta, GA
| | - Timothy M Pawlik
- Division of Surgical Oncology, Department of Surgery, Johns Hopkins University, Baltimore, MD; Division of Surgical Oncology, Department of Surgery, The Ohio State University, Columbus, OH
| | | | - Kamran Idrees
- Division of Surgical Oncology, Department of Surgery, Vanderbilt University, Nashville, TN
| | - Ryan C Fields
- Department of Surgery, Washington University, St Louis, MO
| | - Sharon M Weber
- Department of Surgery, University of Wisconsin, Madison, WI
| | - Clifford Cho
- Department of Surgery, University of Wisconsin, Madison, WI
| | - Robert C Martin
- Division of Surgical Oncology, Department of Surgery, University of Louisville, Louisville, KY
| | - Charles R Scoggins
- Division of Surgical Oncology, Department of Surgery, University of Louisville, Louisville, KY
| | - Perry Shen
- Department of Surgery, Wake Forest University, Winston-Salem, NC
| | - Carl Schmidt
- Division of Surgical Oncology, Department of Surgery, The Ohio State University, Columbus, OH
| | | | - David Bentrem
- Department of Surgery, Northwestern University, Chicago, IL
| | - Syed Ahmad
- Division of Surgical Oncology, Department of Surgery, University of Cincinnati, Cincinnati, OH
| | - Daniel Abbott
- Division of Surgical Oncology, Department of Surgery, University of Cincinnati, Cincinnati, OH; Department of Surgery, University of Wisconsin, Madison, WI
| | - Hong Jin Kim
- Division of Surgical Oncology, Department of Surgery, University of North Carolina, Raleigh, NC
| | - Nipun Merchant
- Division of Surgical Oncology, Department of Surgery, Vanderbilt University, Nashville, TN; Division of Surgical Oncology, Department of Surgery, University of Miami, Miami, FL
| | - Charles A Staley
- Division of Surgical Oncology, Department of Surgery, Winship Cancer Institute, Emory University, Atlanta, GA
| | - David A Kooby
- Division of Surgical Oncology, Department of Surgery, Winship Cancer Institute, Emory University, Atlanta, GA
| | - Shishir K Maithel
- Division of Surgical Oncology, Department of Surgery, Winship Cancer Institute, Emory University, Atlanta, GA.
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