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Zwager LW, Moons LMG, Farina Sarasqueta A, Laclé MM, Albers SC, Hompes R, Peeters KCMJ, Bekkering FC, Boonstra JJ, Ter Borg F, Bos PR, Bulte GJ, Gielisse EAR, Hazen WL, Ten Hove WR, Houben MHMG, Mundt MW, Nagengast WB, Perk LE, Quispel R, Rietdijk ST, Rando Munoz FJ, de Ridder RJJ, Schwartz MP, Schreuder RM, Seerden TCJ, van der Sluis H, van der Spek BW, Straathof JWA, Terhaar Sive Droste JS, Vlug MS, van de Vrie W, Weusten BLAM, de Wijkerslooth TD, Wolters HJ, Fockens P, Dekker E, Bastiaansen BAJ. Long-term oncological outcomes of endoscopic full-thickness resection after previous incomplete resection of low-risk T1 CRC (LOCAL-study): study protocol of a national prospective cohort study. BMC Gastroenterol 2022; 22:516. [PMID: 36513968 DOI: 10.1186/s12876-022-02591-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Accepted: 11/21/2022] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND T1 colorectal cancer (CRC) without histological high-risk factors for lymph node metastasis (LNM) can potentially be cured by endoscopic resection, which is associated with significantly lower morbidity, mortality and costs compared to radical surgery. An important prerequisite for endoscopic resection as definite treatment is the histological confirmation of tumour-free resection margins. Incomplete resection with involved (R1) or indeterminate (Rx) margins is considered a strong risk factor for residual disease and local recurrence. Therefore, international guidelines recommend additional surgery in case of R1/Rx resection, even in absence of high-risk factors for LNM. Endoscopic full-thickness resection (eFTR) is a relatively new technique that allows transmural resection of colorectal lesions. Local scar excision after prior R1/Rx resection of low-risk T1 CRC could offer an attractive minimal invasive strategy to achieve confirmation about radicality of the previous resection or a second attempt for radical resection of residual luminal cancer. However, oncologic safety has not been established and long-term data are lacking. Besides, surveillance varies widely and requires standardization. METHODS/DESIGN In this nationwide, multicenter, prospective cohort study we aim to assess feasibility and oncological safety of completion eFTR following incomplete resection of low-risk T1 CRC. The primary endpoint is to assess the 2 and 5 year luminal local tumor recurrence rate. Secondary study endpoints are to assess feasibility, percentage of curative eFTR-resections, presence of scar tissue and/or complete scar excision at histopathology, safety of eFTR compared to surgery, 2 and 5 year nodal and/or distant tumor recurrence rate and 5-year disease-specific and overall-survival rate. DISCUSSION Since the implementation of CRC screening programs, the diagnostic rate of T1 CRC is steadily increasing. A significant proportion is not recognized as cancer before endoscopic resection and is therefore resected through conventional techniques primarily reserved for benign polyps. As such, precise histological assessment is often hampered due to cauterization and fragmentation and frequently leads to treatment dilemmas. This first prospective trial will potentially demonstrate the effectiveness and oncological safety of completion eFTR for patients who have undergone a previous incomplete T1 CRC resection. Hereby, substantial surgical overtreatment may be avoided, leading to treatment optimization and organ preservation. Trial registration Nederlands Trial Register, NL 7879, 16 July 2019 ( https://trialregister.nl/trial/7879 ).
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Affiliation(s)
- L W Zwager
- Department of Gastroenterology and Hepatology, Amsterdam University Medical Centers Location University of Amsterdam, Meibergdreef 9, Amsterdam, The Netherlands.,Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam, The Netherlands.,Cancer Center Amsterdam, Amsterdam, The Netherlands
| | - L M G Moons
- Department of Gastroenterology and Hepatology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - A Farina Sarasqueta
- Department of Pathology, Amsterdam University Medical Center, Amsterdam, The Netherlands
| | - M M Laclé
- Department of Pathology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - S C Albers
- Department of Gastroenterology and Hepatology, Amsterdam University Medical Centers Location University of Amsterdam, Meibergdreef 9, Amsterdam, The Netherlands.,Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam, The Netherlands.,Cancer Center Amsterdam, Amsterdam, The Netherlands
| | - R Hompes
- Department of Surgery, Amsterdam University Medical Center, Amsterdam, The Netherlands
| | - K C M J Peeters
- Department of Surgery, Leiden University Medical Center, Leiden, The Netherlands
| | - F C Bekkering
- Department of Gastroenterology and Hepatology, IJsselland Hospital, Capelle Aan Den Ijssel, The Netherlands
| | - J J Boonstra
- Department of Gastroenterology and Hepatology, Leiden University Medical Center, Leiden, The Netherlands
| | - F Ter Borg
- Department of Gastroenterology and Hepatology, Deventer Hospital, Deventer, The Netherlands
| | - P R Bos
- Department of Gastroenterology and Hepatology, Gelderse Vallei, Ede, The Netherlands
| | - G J Bulte
- Department of Gastroenterology and Hepatology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - E A R Gielisse
- Department of Gastroenterology and Hepatology, Rode Kruis Hospital, Beverwijk, The Netherlands
| | - W L Hazen
- Department of Gastroenterology and Hepatology, Elisabeth Tweesteden Hospital, Tilburg, The Netherlands
| | - W R Ten Hove
- Department of Gastroenterology and Hepatology, Alrijne Medical Group, Leiden, The Netherlands
| | - M H M G Houben
- Department of Gastroenterology and Hepatology, Haga Teaching Hospital, the Hague, The Netherlands
| | - M W Mundt
- Department of Gastroenterology and Hepatology, Flevoziekenhuis, Almere, The Netherlands
| | - W B Nagengast
- Department of Gastroenterology and Hepatology, University Medical Center Groningen, Groningen, The Netherlands
| | - L E Perk
- Department of Gastroenterology and Hepatology, Haaglanden Medical Center, The Hague, The Netherlands
| | - R Quispel
- Department of Gastroenterology and Hepatology, Reinier de Graaf, Delft, The Netherlands
| | - S T Rietdijk
- Department of Gastroenterology and Hepatology, OLVG, Amsterdam, The Netherlands
| | - F J Rando Munoz
- Department of Gastroenterology and Hepatology, Nij Smellinghe Hospital, Drachten, The Netherlands
| | - R J J de Ridder
- Department of Gastroenterology and Hepatology, Maastricht University Medical Center, Maastricht, The Netherlands
| | - M P Schwartz
- Department of Gastroenterology and Hepatology, Meander Medical Center, Amersfoort, The Netherlands
| | - R M Schreuder
- Department of Gastroenterology and Hepatology, Catharina Hospital, Eindhoven, The Netherlands
| | - T C J Seerden
- Department of Gastroenterology and Hepatology, Amphia Hospital, Breda, The Netherlands
| | - H van der Sluis
- Department of Gastroenterology and Hepatology, Isala Clinics, Zwolle, The Netherlands
| | - B W van der Spek
- Department of Gastroenterology and Hepatology, Noordwest Hospital Group, Alkmaar, The Netherlands
| | - J W A Straathof
- Department of Gastroenterology and Hepatology, Màxima Medical Center, Veldhoven, The Netherlands
| | - J S Terhaar Sive Droste
- Department of Gastroenterology and Hepatology, Jeroen Bosch Hospital, S' Hertogenbosch, The Netherlands
| | - M S Vlug
- Department of Gastroenterology and Hepatology, Dijklander Hospital, Hoorn, The Netherlands
| | - W van de Vrie
- Department of Gastroenterology and Hepatology, Albert Schweitzer Hospital, Dordrecht, The Netherlands
| | - B L A M Weusten
- Department of Gastroenterology and Hepatology, St. Antonius Hospital, Nieuwegein, The Netherlands
| | - T D de Wijkerslooth
- Department of Gastrointestinal Oncology, Netherlands Cancer Institute/Antoni Van Leeuwenhoek, Amsterdam, The Netherlands
| | - H J Wolters
- Department of Gastroenterology and Hepatology, Martini Hospital, Groningen, The Netherlands
| | - P Fockens
- Department of Gastroenterology and Hepatology, Amsterdam University Medical Centers Location University of Amsterdam, Meibergdreef 9, Amsterdam, The Netherlands.,Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam, The Netherlands.,Cancer Center Amsterdam, Amsterdam, The Netherlands
| | - E Dekker
- Department of Gastroenterology and Hepatology, Amsterdam University Medical Centers Location University of Amsterdam, Meibergdreef 9, Amsterdam, The Netherlands.,Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam, The Netherlands.,Cancer Center Amsterdam, Amsterdam, The Netherlands
| | - B A J Bastiaansen
- Department of Gastroenterology and Hepatology, Amsterdam University Medical Centers Location University of Amsterdam, Meibergdreef 9, Amsterdam, The Netherlands. .,Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam, The Netherlands. .,Cancer Center Amsterdam, Amsterdam, The Netherlands.
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2
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Schraa SJ, van Rooijen KL, van der Kruijssen DEW, Rubio Alarcón C, Phallen J, Sausen M, Simmons J, Coupé VMH, van Grevenstein WMU, Elias S, Verkooijen HM, Laclé MM, Bosch LJW, van den Broek D, Meijer GA, Velculescu VE, Fijneman RJA, Vink GR, Koopman M. Circulating tumor DNA guided adjuvant chemotherapy in stage II colon cancer (MEDOCC-CrEATE): study protocol for a trial within a cohort study. BMC Cancer 2020; 20:790. [PMID: 32819390 PMCID: PMC7441668 DOI: 10.1186/s12885-020-07252-y] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Accepted: 08/03/2020] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Accurate detection of patients with minimal residual disease (MRD) after surgery for stage II colon cancer (CC) remains an urgent unmet clinical need to improve selection of patients who might benefit form adjuvant chemotherapy (ACT). Presence of circulating tumor DNA (ctDNA) is indicative for MRD and has high predictive value for recurrent disease. The MEDOCC-CrEATE trial investigates how many stage II CC patients with detectable ctDNA after surgery will accept ACT and whether ACT reduces the risk of recurrence in these patients. METHODS/DESIGN MEDOCC-CrEATE follows the 'trial within cohorts' (TwiCs) design. Patients with colorectal cancer (CRC) are included in the Prospective Dutch ColoRectal Cancer cohort (PLCRC) and give informed consent for collection of clinical data, tissue and blood samples, and consent for future randomization. MEDOCC-CrEATE is a subcohort within PLCRC consisting of 1320 stage II CC patients without indication for ACT according to current guidelines, who are randomized 1:1 into an experimental and a control arm. In the experimental arm, post-surgery blood samples and tissue are analyzed for tissue-informed detection of plasma ctDNA, using the PGDx elio™ platform. Patients with detectable ctDNA will be offered ACT consisting of 8 cycles of capecitabine plus oxaliplatin while patients without detectable ctDNA and patients in the control group will standard follow-up according to guideline. The primary endpoint is the proportion of patients receiving ACT when ctDNA is detectable after resection. The main secondary outcome is 2-year recurrence rate (RR), but also includes 5-year RR, disease free survival, overall survival, time to recurrence, quality of life and cost-effectiveness. Data will be analyzed by intention to treat. DISCUSSION The MEDOCC-CrEATE trial will provide insight into the willingness of stage II CC patients to be treated with ACT guided by ctDNA biomarker testing and whether ACT will prevent recurrences in a high-risk population. Use of the TwiCs design provides the opportunity to randomize patients before ctDNA measurement, avoiding ethical dilemmas of ctDNA status disclosure in the control group. TRIAL REGISTRATION Netherlands Trial Register: NL6281/NTR6455 . Registered 18 May 2017, https://www.trialregister.nl/trial/6281.
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Affiliation(s)
- S J Schraa
- Department of Medical Oncology, University Medical Center Utrecht, Utrecht University, Heidelberglaan 100, 3584 CX, Utrecht, The Netherlands
| | - K L van Rooijen
- Department of Medical Oncology, University Medical Center Utrecht, Utrecht University, Heidelberglaan 100, 3584 CX, Utrecht, The Netherlands
| | - D E W van der Kruijssen
- Department of Medical Oncology, University Medical Center Utrecht, Utrecht University, Heidelberglaan 100, 3584 CX, Utrecht, The Netherlands
| | - C Rubio Alarcón
- Department of Pathology, Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX, Amsterdam, The Netherlands
| | - J Phallen
- The Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
| | - M Sausen
- Personal Genome Diagnostics, Baltimore, MD, 21224, USA
| | - J Simmons
- Personal Genome Diagnostics, Baltimore, MD, 21224, USA
| | - V M H Coupé
- Department of Epidemiology and Biostatistics, Amsterdam University Medical Centers, De Boelelaan 1117, 1081 HV, Amsterdam, The Netherlands
| | - W M U van Grevenstein
- Department of Surgical Oncology, University Medical Center Utrecht, Utrecht University, Heidelberglaan 100, 3584 CX, Utrecht, The Netherlands
| | - S Elias
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Heidelberglaan 100, 3584 CX, Utrecht, The Netherlands
| | - H M Verkooijen
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Heidelberglaan 100, 3584 CX, Utrecht, The Netherlands
| | - M M Laclé
- Department of Pathology, University Medical Center Utrecht, Utrecht University, Heidelberglaan 100, 3584 CX, Utrecht, The Netherlands
| | - L J W Bosch
- Department of Pathology, Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX, Amsterdam, The Netherlands
| | - D van den Broek
- Department of Laboratory Medicine, Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX, Amsterdam, The Netherlands
| | - G A Meijer
- Department of Pathology, Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX, Amsterdam, The Netherlands
| | - V E Velculescu
- The Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
| | - R J A Fijneman
- Department of Pathology, Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX, Amsterdam, The Netherlands
| | - G R Vink
- Department of Medical Oncology, University Medical Center Utrecht, Utrecht University, Heidelberglaan 100, 3584 CX, Utrecht, The Netherlands
| | - M Koopman
- Department of Medical Oncology, University Medical Center Utrecht, Utrecht University, Heidelberglaan 100, 3584 CX, Utrecht, The Netherlands.
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3
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Ubink I, Bolhaqueiro ACF, Elias SG, Raats DAE, Constantinides A, Peters NA, Wassenaar ECE, de Hingh IHJT, Rovers KP, van Grevenstein WMU, Laclé MM, Kops GJPL, Borel Rinkes IHM, Kranenburg O. Organoids from colorectal peritoneal metastases as a platform for improving hyperthermic intraperitoneal chemotherapy. Br J Surg 2019; 106:1404-1414. [PMID: 31197820 PMCID: PMC6771632 DOI: 10.1002/bjs.11206] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 03/11/2019] [Accepted: 03/15/2019] [Indexed: 12/15/2022]
Abstract
Background Patients with peritoneal metastases from colorectal cancer have a poor prognosis. If the intraperitoneal tumour load is limited, patients may be eligible for cytoreductive surgery followed by hyperthermic intraperitoneal chemotherapy (HIPEC). This treatment has improved overall survival, but recurrence rates are high. The aim of this study was to create a preclinical platform for the development of more effective intraperitoneal chemotherapy strategies. Methods Using organoid technology, five tumour cultures were generated from malignant ascites and resected peritoneal metastases. These were used in an in vitro HIPEC model to assess sensitivity to mitomycin C (MMC) and oxaliplatin, the drugs used most commonly in HIPEC. The model was also used to test a rational combination treatment involving MMC and inhibitors of the checkpoint kinase ATR. Results MMC was more effective in eliminating peritoneal metastasis‐derived organoids than oxaliplatin at clinically relevant concentrations. However, the drug concentrations required to eliminate 50 per cent of the tumour cells (IC50) were higher than the median clinical dose in two of five organoid lines for MMC, and all five lines for oxaliplatin, indicating a general resistance to monotherapy. ATR inhibition increased the sensitivity of all peritoneal metastasis‐derived organoids to MMC, as the IC50 decreased 2·6–12·4‐fold to well below concentrations commonly attained in clinical practice. Live‐cell imaging and flow cytometric analysis showed that ATR inhibition did not release cells from MMC‐induced cell cycle arrest, but caused increased replication stress and accelerated cell death. Conclusion Peritoneal metastasis‐derived organoids can be used to evaluate existing HIPEC regimens on an individual‐patient level and for development of more effective treatment strategies.
Surgical relevance Cytoreductive surgery followed by hyperthermic intraperitoneal chemotherapy (HIPEC) has improved prognosis of patients with peritoneal metastases from colorectal cancer, but disease recurrence is common. More effective and personalized HIPEC is urgently needed. Organoid technology is frequently used for drug screens, as patient‐derived organoids can accurately predict clinical therapeutic response in vitro. A panel of organoids was established from peritoneal metastases from colorectal cancer and used to develop a model for testing HIPEC regimens in vitro. Patient‐derived organoids differed in sensitivity to commonly used chemotherapeutics, in line with variable clinical outcomes following cytoreductive surgery–HIPEC. Combining MMC with an ATR inhibitor improved the efficacy of MMC. Peritoneal metastasis‐derived organoids can be used as a platform to test novel (combination) strategies that increase HIPEC efficacy. In the future, organoids could be used to select patent‐tailored HIPEC regimens.
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Affiliation(s)
- I Ubink
- Department of Surgical Oncology, UMC Utrecht Cancer Centre, Utrecht, the Netherlands
| | - A C F Bolhaqueiro
- Oncode Institute, Hubrecht Institute - Royal Academy of Arts and Sciences and University Medical Centre Utrecht, Utrecht, the Netherlands
| | - S G Elias
- Julius Centre for Health Sciences and Primary Care, Utrecht, the Netherlands
| | - D A E Raats
- Department of Surgical Oncology, UMC Utrecht Cancer Centre, Utrecht, the Netherlands
| | - A Constantinides
- Department of Surgical Oncology, UMC Utrecht Cancer Centre, Utrecht, the Netherlands
| | - N A Peters
- Department of Surgical Oncology, UMC Utrecht Cancer Centre, Utrecht, the Netherlands
| | - E C E Wassenaar
- Department of Surgical Oncology, UMC Utrecht Cancer Centre, Utrecht, the Netherlands.,Department of Surgery, St Antonius Hospital, Nieuwegein, the Netherlands
| | - I H J T de Hingh
- Department of Surgery, Catharina Hospital, Eindhoven, the Netherlands.,GROW - School for Oncology and Developmental Biology, Maastricht University, Maastricht, the Netherlands
| | - K P Rovers
- Department of Surgery, Catharina Hospital, Eindhoven, the Netherlands
| | - W M U van Grevenstein
- Department of Surgical Oncology, UMC Utrecht Cancer Centre, Utrecht, the Netherlands
| | - M M Laclé
- Department of Pathology, University Medical Centre Utrecht, Utrecht, the Netherlands
| | - G J P L Kops
- Oncode Institute, Hubrecht Institute - Royal Academy of Arts and Sciences and University Medical Centre Utrecht, Utrecht, the Netherlands
| | - I H M Borel Rinkes
- Department of Surgical Oncology, UMC Utrecht Cancer Centre, Utrecht, the Netherlands
| | - O Kranenburg
- Department of Surgical Oncology, UMC Utrecht Cancer Centre, Utrecht, the Netherlands.,Utrecht Platform for Organoid Technology, Utrecht University, Utrecht, the Netherlands
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4
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Ubink I, van Eden WJ, Snaebjornsson P, Kok NFM, van Kuik J, van Grevenstein WMU, Laclé MM, Sanders J, Fijneman RJA, Elias SG, Borel Rinkes IHM, Aalbers AGJ, Kranenburg O. Histopathological and molecular classification of colorectal cancer and corresponding peritoneal metastases. Br J Surg 2018; 105:e204-e211. [PMID: 29341165 DOI: 10.1002/bjs.10788] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Revised: 09/19/2017] [Accepted: 11/16/2017] [Indexed: 12/19/2022]
Abstract
BACKGROUND Patients with colorectal peritoneal carcinomatosis have a very poor prognosis. The recently developed consensus molecular subtype (CMS) classification of primary colorectal cancer categorizes tumours into four robust subtypes, which could guide subtype-targeted therapy. CMS4, also known as the mesenchymal subtype, has the greatest propensity to form distant metastases. CMS4 status and histopathological features of colorectal peritoneal carcinomatosis were investigated in this study. METHODS Fresh-frozen tissue samples from primary colorectal cancer and paired peritoneal metastases from patients who underwent cytoreductive surgery combined with hyperthermic intraperitoneal chemotherapy were collected. Histopathological features were analysed, and a reverse transcriptase-quantitative PCR test was used to assess CMS4 status of all collected lesions. RESULTS Colorectal peritoneal carcinomatosis was associated with adverse histopathological characteristics, including a high percentage of stroma in both primary tumours and metastases, and poor differentiation grade and high-grade tumour budding in primary tumours. Furthermore, CMS4 was significantly enriched in primary tumours with peritoneal metastases, compared with unselected stage I-IV tumours (60 per cent (12 of 20) versus 23 per cent; P = 0.002). The majority of peritoneal metastases (75 per cent, 21 of 28) were also classified as CMS4. Considerable intrapatient subtype heterogeneity was observed. Notably, 15 of 16 patients with paired tumours had at least one CMS4-positive tumour location. CONCLUSION Significant enrichment for CMS4 was observed in colorectal peritoneal carcinomatosis. Surgical relevance Cytoreductive surgery combined with hyperthermic intraperitoneal chemotherapy (CRS-HIPEC) improves survival of selected patients with colorectal peritoneal carcinomatosis, but recurrence is common. Histopathological and molecular analysis of colorectal peritoneal carcinomatosis could provide clues for development of novel therapies. In this study, colorectal peritoneal carcinomatosis was found to be enriched for tumours with high stromal content and CMS4-positive status. To further improve prognosis for patients with colorectal peritoneal carcinomatosis, therapies that target tumour-stroma interaction could be added to CRS-HIPEC.
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Affiliation(s)
- I Ubink
- Department of Surgical Oncology, Cancer Centre, University Medical Centre Utrecht, Utrecht, The Netherlands
| | - W J van Eden
- Department of Surgical Oncology, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - P Snaebjornsson
- Department of Pathology, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - N F M Kok
- Department of Surgical Oncology, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - J van Kuik
- Department of Pathology, University Medical Centre Utrecht, Utrecht, The Netherlands
| | - W M U van Grevenstein
- Department of Surgical Oncology, Cancer Centre, University Medical Centre Utrecht, Utrecht, The Netherlands
| | - M M Laclé
- Department of Pathology, University Medical Centre Utrecht, Utrecht, The Netherlands
| | - J Sanders
- Department of Pathology, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - R J A Fijneman
- Department of Pathology, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - S G Elias
- Julius Centre for Health Sciences and Primary Care, University Medical Centre Utrecht, Utrecht, The Netherlands
| | - I H M Borel Rinkes
- Department of Surgical Oncology, Cancer Centre, University Medical Centre Utrecht, Utrecht, The Netherlands
| | - A G J Aalbers
- Department of Surgical Oncology, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - O Kranenburg
- Department of Surgical Oncology, Cancer Centre, University Medical Centre Utrecht, Utrecht, The Netherlands.,Division of Biomedical Genetics, University Medical Centre Utrecht, Utrecht, The Netherlands
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5
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Goey KKH, Elias SG, van Tinteren H, Laclé MM, Willems SM, Offerhaus GJA, de Leng WWJ, Strengman E, Ten Tije AJ, Creemers GJM, van der Velden A, de Jongh FE, Erdkamp FLG, Tanis BC, Punt CJA, Koopman M. Maintenance treatment with capecitabine and bevacizumab versus observation in metastatic colorectal cancer: updated results and molecular subgroup analyses of the phase 3 CAIRO3 study. Ann Oncol 2018; 28:2128-2134. [PMID: 28911067 DOI: 10.1093/annonc/mdx322] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Background The phase 3 CAIRO3 study showed that capecitabine plus bevacizumab (CAP-B) maintenance treatment after six cycles capecitabine, oxaliplatin, and bevacizumab (CAPOX-B) in metastatic colorectal cancer (mCRC) patients is effective, without compromising quality of life. In this post hoc analysis with updated follow-up and data regarding sidedness, we defined subgroups according to RAS/BRAF mutation status and mismatch repair (MMR) status, and investigated their influence on treatment efficacy. Patients and methods A total of 558 patients with previously untreated mCRC and stable disease or better after six cycles CAPOX-B induction treatment were randomised to either CAP-B maintenance treatment (n = 279) or observation (n = 279). Upon first progression, patients were to receive CAPOX-B reintroduction until second progression (PFS2, primary end point). We centrally assessed RAS/BRAF mutation status and MMR status, or used local results if central assessment was not possible. Intention-to-treat stratified Cox models adjusted for baseline covariables were used to examine whether treatment efficacy was modified by RAS/BRAF mutation status. Results RAS, BRAF mutations, and MMR deficiency were detected in 240/420 (58%), 36/381 (9%), and 4/279 (1%) patients, respectively. At a median follow-up of 87 months (IQR 69-97), all mutational subgroups showed significant improvement from maintenance treatment for the primary end point PFS2 [RAS/BRAF wild-type: hazard ratio (HR) 0.57 (95% CI 0.39-0.84); RAS-mutant: HR 0.74 (0.55-0.98); V600EBRAF-mutant: HR 0.28 (0.12-0.64)] and secondary end points, except for the RAS-mutant subgroup regarding overall survival. Adjustment for sidedness instead of primary tumour location yielded comparable results. Although right-sided tumours were associated with inferior prognosis, both patients with right- and left-sided tumours showed significant benefit from maintenance treatment. Conclusions CAP-B maintenance treatment after six cycles CAPOX-B is effective in first-line treatment of mCRC across all mutational subgroups. The benefit of maintenance treatment was most pronounced in patients with RAS/BRAF wild-type and V600EBRAF-mutant tumours. ClinicalTrials.gov number NCT00442637.
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Affiliation(s)
- K K H Goey
- Department of Medical Oncology, University Medical Center Utrecht, Utrecht University, Utrecht
| | - S G Elias
- Department of Epidemiology, Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht
| | - H van Tinteren
- Department of Biometrics, Netherlands Cancer Institute Amsterdam - Antoni van Leeuwenhoek Hospital, Amsterdam
| | - M M Laclé
- Department of Pathology, University Medical Center Utrecht, Utrecht University, Utrecht
| | - S M Willems
- Department of Pathology, University Medical Center Utrecht, Utrecht University, Utrecht
| | - G J A Offerhaus
- Department of Pathology, University Medical Center Utrecht, Utrecht University, Utrecht
| | - W W J de Leng
- Department of Pathology, University Medical Center Utrecht, Utrecht University, Utrecht
| | - E Strengman
- Department of Pathology, University Medical Center Utrecht, Utrecht University, Utrecht
| | - A J Ten Tije
- Department of Medical Oncology, Amphia Hospital, Breda
| | - G-J M Creemers
- Department of Medical Oncology, Catharina Hospital, Eindhoven
| | | | - F E de Jongh
- Department of Medical Oncology, Ikazia Hospital, Rotterdam
| | - F L G Erdkamp
- Department of Medical Oncology, Zuyderland MC, Heerlen-Sittard
| | - B C Tanis
- Department of Medical Oncology, Groene Hart Hospital, Gouda
| | - C J A Punt
- Department of Medical Oncology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - M Koopman
- Department of Medical Oncology, University Medical Center Utrecht, Utrecht University, Utrecht
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