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van Not OJ, van den Eertwegh AJ, Haanen JB, Blank CU, Aarts MJ, van Breeschoten J, van den Berkmortel FW, de Groot JWB, Hospers GA, Ismail RK, Kapiteijn E, Bloem M, De Meza MM, Piersma D, van Rijn RS, Stevense-den Boer MA, van der Veldt AA, Vreugdenhil G, Boers-Sonderen MJ, Blokx WA, Wouters MW, Suijkerbuijk KP. Improving survival in advanced melanoma patients: a trend analysis from 2013 to 2021. EClinicalMedicine 2024; 69:102485. [PMID: 38370537 PMCID: PMC10874714 DOI: 10.1016/j.eclinm.2024.102485] [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] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 01/30/2024] [Accepted: 01/30/2024] [Indexed: 02/20/2024] Open
Abstract
Background The prognosis of advanced melanoma patients has significantly improved over the years. We aimed to evaluate the survival per year of diagnosis. Methods All systemically treated patients diagnosed with advanced melanoma from 2013 to 2021 were included from the Dutch Melanoma Treatment Registry. Baseline characteristics and overall survival (OS) were compared between the different years of diagnosis. A multivariable Cox proportional hazards model was used to estimate the association between year of diagnosis and OS. Findings For this cohort study, we included 6260 systemically treated advanced melanoma patients. At baseline, there was an increase over the years in age, the percentage of patients with an ECOG PS ≥ 2, with brain metastases, and a synchronous diagnosis of primary and unresectable melanoma. Median OS increased from 11.2 months (95% CI 10.0-12.4) for patients diagnosed in 2013 to 32.0 months (95% CI 26.6-36.7) for patients diagnosed in 2019. Median OS was remarkably lower for patients diagnosed in 2020 (26.6 months; 95% CI 23.9-35.1) and 2021 (24.0 months; 95% CI 20.4-NR). Patients diagnosed in 2020 and 2021 had a higher hazard of death compared to patients diagnosed in 2019, although this was not significant. The multivariable Cox regression showed a lower hazard of death for the years of diagnosis after 2013. In contrast, patients diagnosed in 2020 and 2021 had a higher hazard of death compared to patients diagnosed in 2019. Interpretation After a continuous survival improvement for advanced melanoma patients between 2013 and 2019, outcomes of patients diagnosed in 2020 and 2021 seem poorer. This trend of decreased survival remained after correcting for known prognostic factors and previous neoadjuvant or adjuvant treatment, suggesting that it is explained by unmeasured factors, which-considering the timing-could be COVID-19-related. Funding For the Dutch Melanoma Treatment Registry (DMTR), the Dutch Institute for Clinical Auditing foundation received a start-up grant from governmental organization The Netherlands Organization for Health Research and Development (ZonMW, project number 836002002). The DMTR is structurally funded by Bristol-Myers Squibb, Merck Sharpe & Dohme, Novartis, and Roche Pharma. Roche Pharma stopped funding in 2019, and Pierre Fabre started funding the DMTR in 2019. For this work, no funding was granted.
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Affiliation(s)
- Olivier J. van Not
- Scientific Bureau, Dutch Institute for Clinical Auditing, Rijnsburgerweg 10, Leiden 2333AA, the Netherlands
- Department of Medical Oncology, University Medical Center Utrecht, Utrecht University, Heidelberglaan 100, Utrecht 3584CX, the Netherlands
| | - Alfons J.M. van den Eertwegh
- Department of Medical Oncology, Amsterdam UMC, VU University Medical Center, Cancer Center Amsterdam, De Boelelaan 1118, Amsterdam 1081HZ, the Netherlands
| | - John B. Haanen
- Department of Molecular Oncology & Immunology, Netherlands Cancer Institute, Plesmanlaan 121, Amsterdam 1066CX, the Netherlands
| | - Christian U. Blank
- Department of Molecular Oncology & Immunology, Netherlands Cancer Institute, Plesmanlaan 121, Amsterdam 1066CX, the Netherlands
- Department of Medical Oncology & Immunology, Netherlands Cancer Institute, Plesmanlaan 121, Amsterdam 1066CX, the Netherlands
| | - Maureen J.B. Aarts
- Department of Medical Oncology, GROW School for Oncology and Developmental Biology, Maastricht University Medical Centre+, P. Debyelaan 25, Maastricht 6229 HX, the Netherlands
| | - Jesper van Breeschoten
- Scientific Bureau, Dutch Institute for Clinical Auditing, Rijnsburgerweg 10, Leiden 2333AA, the Netherlands
- Department of Medical Oncology, Amsterdam UMC, VU University Medical Center, Cancer Center Amsterdam, De Boelelaan 1118, Amsterdam 1081HZ, the Netherlands
| | | | | | - Geke A.P. Hospers
- Department of Medical Oncology, University Medical Centre Groningen, University of Groningen, Hanzeplein 1, Groningen 9713GZ, the Netherlands
| | - Rawa K. Ismail
- Scientific Bureau, Dutch Institute for Clinical Auditing, Rijnsburgerweg 10, Leiden 2333AA, the Netherlands
| | - Ellen Kapiteijn
- Department of Medical Oncology, Leiden University Medical Centre, Albinusdreef 2, Leiden 2333ZA, the Netherlands
| | - Manja Bloem
- Scientific Bureau, Dutch Institute for Clinical Auditing, Rijnsburgerweg 10, Leiden 2333AA, the Netherlands
- Department of Biomedical Data Sciences, Leiden University Medical Centre, Einthovenweg 20, Leiden 2333ZC, the Netherlands
- Department of Surgical Oncology, Netherlands Cancer Institute, Plesmanlaan 121, Amsterdam 1066CX, the Netherlands
| | - Melissa M. De Meza
- Scientific Bureau, Dutch Institute for Clinical Auditing, Rijnsburgerweg 10, Leiden 2333AA, the Netherlands
- Department of Biomedical Data Sciences, Leiden University Medical Centre, Einthovenweg 20, Leiden 2333ZC, the Netherlands
- Department of Surgical Oncology, Netherlands Cancer Institute, Plesmanlaan 121, Amsterdam 1066CX, the Netherlands
| | - Djura Piersma
- Department of Internal Medicine, Medisch Spectrum Twente, Koningsplein 1, Enschede 7512KZ, the Netherlands
| | - Rozemarijn S. van Rijn
- Department of Internal Medicine, Medical Centre Leeuwarden, Henri Dunantweg 2, Leeuwarden 8934AD, the Netherlands
| | | | - Astrid A.M. van der Veldt
- Department of Medical Oncology and Radiology & Nuclear Medicine, Erasmus Medical Centre, ‘s-Gravendijkwal 230, Rotterdam 3015CE, the Netherlands
| | - Gerard Vreugdenhil
- Department of Internal Medicine, Maxima Medical Centre, De Run 4600, Eindhoven 5504DB, the Netherlands
| | - Marye J. Boers-Sonderen
- Department of Medical Oncology, Radboud University Medical Centre, Geert Grooteplein Zuid 10, Nijmegen 6525GA, the Netherlands
| | - Willeke A.M. Blokx
- Department of Pathology, University Medical Center Utrecht, Heidelberglaan 100, Utrecht 3584CX, Utrecht University, the Netherlands
| | - Michel W.J.M. Wouters
- Scientific Bureau, Dutch Institute for Clinical Auditing, Rijnsburgerweg 10, Leiden 2333AA, the Netherlands
- Department of Biomedical Data Sciences, Leiden University Medical Centre, Einthovenweg 20, Leiden 2333ZC, the Netherlands
- Department of Surgical Oncology, Netherlands Cancer Institute, Plesmanlaan 121, Amsterdam 1066CX, the Netherlands
| | - Karijn P.M. Suijkerbuijk
- Department of Medical Oncology, University Medical Center Utrecht, Utrecht University, Heidelberglaan 100, Utrecht 3584CX, the Netherlands
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Dijkstra EA, Nilsson PJ, Hospers GA, Bahadoer RR, Meershoek-Klein Kranenbarg E, Roodvoets AG, Putter H, Berglund Å, Cervantes A, Crolla RM, Hendriks MP, Capdevila J, Edhemovic I, Marijnen CA, van de Velde CJ, Glimelius B, van Etten B. Locoregional Failure During and After Short-course Radiotherapy Followed by Chemotherapy and Surgery Compared With Long-course Chemoradiotherapy and Surgery: A 5-Year Follow-up of the RAPIDO Trial. Ann Surg 2023; 278:e766-e772. [PMID: 36661037 PMCID: PMC10481913 DOI: 10.1097/sla.0000000000005799] [Citation(s) in RCA: 62] [Impact Index Per Article: 62.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
OBJECTIVE To analyze risk and patterns of locoregional failure (LRF) in patients of the RAPIDO trial at 5 years. BACKGROUND Multimodality treatment improves local control in rectal cancer. Total neoadjuvant treatment (TNT) aims to improve systemic control while local control is maintained. At 3 years, LRF rate was comparable between TNT and chemoradiotherapy in the RAPIDO trial. METHODS A total of 920 patients were randomized between an experimental (EXP, short-course radiotherapy, chemotherapy, and surgery) and a standard-care group (STD, chemoradiotherapy, surgery, and optional postoperative chemotherapy). LRFs, including early LRF (no resection except for organ preservation/R2 resection) and locoregional recurrence (LRR) after an R0/R1 resection, were analyzed. RESULTS Totally, 460 EXP and 446 STD patients were eligible. At 5.6 years (median follow-up), LRF was detected in 54/460 (12%) and 36/446 (8%) patients in the EXP and STD groups, respectively ( P =0.07), in which EXP patients were more often treated with 3-dimensional-conformed radiotherapy ( P =0.029). In the EXP group, LRR was detected more often [44/431 (10%) vs. 26/428 (6%); P =0.027], with more often a breached mesorectum (9/44 (21%) vs. 1/26 (4); P =0.048). The EXP treatment, enlarged lateral lymph nodes, positive circumferential resection margin, tumor deposits, and node positivity at pathology were the significant predictors for developing LRR. Location of the LRRs was similar between groups. Overall survival after LRF was comparable [hazard ratio: 0.76 (95% CI, 0.46-1.26); P =0.29]. CONCLUSIONS The EXP treatment was associated with an increased risk of LRR, whereas the reduction in disease-related treatment failure and distant metastases remained after 5 years. Further refinement of the TNT in rectal cancer is mandated.
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Affiliation(s)
- Esmée A. Dijkstra
- Department of Medical Oncology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Per J. Nilsson
- Department of Surgery, Karolinska University Hospital, Stockholm, Sweden
| | - Geke A.P. Hospers
- Department of Medical Oncology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Renu R. Bahadoer
- Department of Surgery, Leiden University Medical Center, Leiden, The Netherlands
| | | | - Annet G.H. Roodvoets
- Department of Surgery, Leiden University Medical Center, Leiden, The Netherlands
| | - Hein Putter
- Department of Medical Statistics and Bioinformatics, Leiden University Medical Center, Leiden, The Netherlands
| | - Åke Berglund
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Andrés Cervantes
- Department of medical oncology, Biomedical Research Institute Incliva, University of Valencia, Valencia, Spain
| | | | | | - Jaume Capdevila
- Department of Medical Oncology, Vall Hebron Institute of Oncology (VHIO), Vall Hebron University Hospital, Autonomous University of Barcelona (UAB), Barcelona, Spain
| | - Ibrahim Edhemovic
- Department of surgical oncology, Institute of Oncology Ljubljana, Ljubljana, Slovenia
| | - Corrie A.M. Marijnen
- Department of Radiation Oncology, Netherlands Cancer Institute, Amsterdam, The Netherlands
- Department of Radiation Oncology, Leiden University Medical Center, Leiden, The Netherlands
| | | | - Bengt Glimelius
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Boudewijn van Etten
- Department of Surgery, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
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Egeler MD, van de Poll-Franse LV, Tissier R, Rogiers A, Boers-Sonderen MJ, van den Eertwegh AJ, Hospers GA, de Groot JWB, Aarts MJB, Kapiteijn E, Piersma D, Vreugdenhil G, van der Veldt AA, Suijkerbuijk KPM, Neyns B, Janssen KJ, Blank CU, Retèl VP, Boekhout AH. Health-state utilities in long-term advanced melanoma survivors comparable with the general population. Qual Life Res 2023; 32:2517-2525. [PMID: 37079262 DOI: 10.1007/s11136-023-03427-9] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/16/2023] [Indexed: 04/21/2023]
Abstract
BACKGROUND Checkpoint inhibitors have been shown to substantially improve the survival of patients with advanced melanoma. With this growing group of survivors treated with immunotherapies, assessing their health-state utilities is essential and can be used for the calculation of quality-adjusted life years and for cost-effectiveness analyses. Therefore, we evaluated the health-state utilities in long-term advanced melanoma survivors. METHODS Health-state utilities were evaluated in a cohort of advanced melanoma survivors 24-36 months (N = 37) and 36-plus months (N = 47) post-ipilimumab monotherapy. In addition, the health-state utilities of the 24-36 months survivor group were assessed longitudinally, and utilities of the combined survival groups (N = 84) were compared with a matched control population (N = 168). The EQ-5D was used to generate health-state utility values, and quality-of-life questionnaires were used to establish correlations and influencing factors of utility scores. RESULTS Health-state utility scores were similar between the 24-36 months'- and the 36-plus months' survival group (0.81 vs 0.86; p = .22). In survivors, lower utility scores were associated with symptoms of depression (β = - .82, p = .022) and fatigue burden (β = - .29, p = .007). Utility scores did not significantly change after 24-36 months of survival, and the utilities of survivors were comparable to the matched control population (0.84 vs 0.87; p = .07). DISCUSSION Our results show that long-term advanced melanoma survivors treated with ipilimumab monotherapy experience relatively stable and high health-state utility scores.
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Affiliation(s)
- M D Egeler
- Department of Psychosocial Research and Epidemiology, The Netherlands Cancer Institute, Antoni Van Leeuwenhoek Hospital, Amsterdam, The Netherlands.
| | - L V van de Poll-Franse
- Department of Psychosocial Research and Epidemiology, The Netherlands Cancer Institute, Antoni Van Leeuwenhoek Hospital, Amsterdam, The Netherlands
- Department of Research & Development, Netherlands Comprehensive Cancer Organisation (IKNL), Utrecht, The Netherlands
- Department of Medical and Clinical Psychology, Center of Research On Psychology in Somatic Diseases (CoRPS), Tilburg University, Tilburg, The Netherlands
| | - R Tissier
- Department of Psychosocial Research and Epidemiology, The Netherlands Cancer Institute, Antoni Van Leeuwenhoek Hospital, Amsterdam, The Netherlands
| | - A Rogiers
- Department of Psychiatry, Centre Hospitalier Universitaire Brugmann, Brussels, Belgium
| | - M J Boers-Sonderen
- Department of Medical Oncology, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - A J van den Eertwegh
- Department of Medical Oncology, Amsterdam UMC, VU University Medical Center, Cancer Center Amsterdam, Amsterdam, The Netherlands
| | - G A Hospers
- Department of Medical Oncology, University Medical Centre Groningen, Groningen, The Netherlands
| | | | - M J B Aarts
- Department of Medical Oncology, Maastricht University Medical Centre, Maastricht, The Netherlands
| | - E Kapiteijn
- Leiden University Medical Centre, Leiden, The Netherlands
| | - D Piersma
- Medical Spectrum Twente, Enschede, The Netherlands
| | - G Vreugdenhil
- Department of Internal Medicine, Maxima Medical Centre, Eindhoven, The Netherlands
| | - A A van der Veldt
- Departments of Medical Oncology and Radiology & Nuclear Medicine, Erasmus University Medical Centre, Rotterdam, The Netherlands
| | - K P M Suijkerbuijk
- Department of Medical Oncology, University Medical Cancer Center, Utrecht, The Netherlands
| | - B Neyns
- Universitair Ziekenhuis Brussel, Brussels, Belgium
| | - K J Janssen
- Bristol-Myers Squibb, Utrecht, The Netherlands
| | - C U Blank
- Department of Medical Oncology, The Netherlands Cancer Institute, Antoni Van Leeuwenhoek Hospital, Amsterdam, The Netherlands
| | - V P Retèl
- Department of Psychosocial Research and Epidemiology, The Netherlands Cancer Institute, Antoni Van Leeuwenhoek Hospital, Amsterdam, The Netherlands
- Department of Health Technology & Services Research, University of Twente, Enschede, The Netherlands
| | - A H Boekhout
- Department of Psychosocial Research and Epidemiology, The Netherlands Cancer Institute, Antoni Van Leeuwenhoek Hospital, Amsterdam, The Netherlands
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Bahadoer RR, Hospers GA, Marijnen CA, Peeters KC, Putter H, Dijkstra EA, Kranenbarg EMK, Roodvoets AG, van Etten B, Nilsson PJ, Glimelius B, van de Velde CJ. Risk and location of distant metastases in patients with locally advanced rectal cancer after total neoadjuvant treatment or chemoradiotherapy in the RAPIDO trial. Eur J Cancer 2023; 185:139-149. [PMID: 36996624 DOI: 10.1016/j.ejca.2023.02.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 02/18/2023] [Accepted: 02/25/2023] [Indexed: 03/09/2023]
Abstract
INTRODUCTION Although optimising rectal cancer treatment has reduced local recurrence rates, many patients develop distant metastases (DM). The current study investigated whether a total neoadjuvant treatment strategy influences the development, location, and timing of metastases in patients diagnosed with high-risk locally advanced rectal cancer included in the Rectal cancer And Pre-operative Induction therapy followed by Dedicated Operation (RAPIDO) trial. MATERIAL AND METHODS Patients were randomly assigned to short-course radiotherapy followed by 18 weeks of CAPOX or FOLFOX4 before surgery (EXP), or long-course chemoradiotherapy with optional postoperative chemotherapy (SC-G). Assessments for metastatic disease were performed pre- and post-treatment, during surgery, and 6, 12, 24, 36, and 60 months postoperatively. From randomisation, differences in the occurrence of DM and first site of metastasis were evaluated. RESULTS In total, 462 patients were evaluated in the EXP and 450 patients in the SC-G groups. The cumulative probability of DM at 5 years after randomisation was 23% [95% CI 19-27] and 30% [95% CI 26-35] (HR 0.72 [95% CI 0.56-0.93]; P = 0.011) in the EXP and SC-G, respectively. The median time to DM was 1.4 (EXP) and 1.3 years (SC-G). After diagnosis of DM, median survival was 2.6 years [95% CI 2.0-3.1] in the EXP and 3.2 years [95% CI 2.3-4.1] in the SC-G groups (HR 1.39 [95% CI 1.01-1.92]; P = 0.04). First occurrence of DM was most often in the lungs (60/462 [13%] EXP and 55/450 [12%] SC-G) or the liver (40/462 [9%] EXP and 69/450 [15%] SC-G). A hospital policy of postoperative chemotherapy did not influence the development of DM. CONCLUSIONS Compared to long-course chemoradiotherapy, total neoadjuvant treatment with short-course radiotherapy and chemotherapy significantly decreased the occurrence of metastases, particularly liver metastases.
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Ismail RK, Suijkerbuijk KP, de Boer A, van Dartel M, Hilarius DL, Pasmooij A, van Zeijl MC, Aarts MJ, van den Berkmortel FW, Blank CU, Boers-Sonderen MJ, de Groot JW, Haanen JB, Hospers GA, Kapiteijn E, Piersma D, van Rijn RS, van der Veldt AA, Vreugdenhil A, Westgeest H, van den Eertwegh AJ, Wouters MW. Long-term survival of patients with advanced melanoma treated with BRAF-MEK inhibitors. Melanoma Res 2022; 32:460-468. [PMID: 35703270 PMCID: PMC9612708 DOI: 10.1097/cmr.0000000000000832] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Accepted: 04/26/2022] [Indexed: 11/26/2022]
Abstract
Recent results of patients with advanced melanoma treated with first-line BRAF-MEK inhibitors in clinical trials showed 5-year survival in one-third of patients with a median overall survival (OS) of more than 2 years. This study aimed to investigate these patients' real-world survival and identify the characteristics of long-term survivors. The study population consisted of patients with advanced cutaneous melanoma with a BRAF-V600 mutated tumor who were treated with first-line BRAF-MEK inhibitors between 2013 and 2017. Long-term survival was defined as a minimum OS of 2 years from start therapy. The median progression-free survival (mPFS) and median OS (mOS) of real-world patients ( n = 435) were respectively 8.0 (95% CI, 6.8-9.4) and 11.7 (95% CI, 10.3-13.5) months. Two-year survival was reached by 28% of the patients, 22% reached 3-year survival and 19% reached 4-year survival. Real-world patients often had brain metastases (41%), stage IV M1c disease (87%), ECOG PS ≥2 (21%), ≥3 organ sites (62%) and elevated LDH of ≥250 U/I (49%). Trial-eligible real-world patients had an mOS of 17.9 months. Patients surviving more than 2 years ( n = 116) more often had an ECOG PS ≤1 (83%), normal LDH (60%), no brain metastases (60%), no liver metastases (63%) and <3 organ sites (60%). Long-term survival of real-world patients treated with first-line BRAF-MEK inhibitors is significantly lower than that of trial patients, which is probably explained by poorer baseline characteristics of patients treated in daily practice. Long-term survivors generally had more favorable characteristics with regard to age, LDH level and metastatic sites, compared to patients not reaching long-term survival.
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Affiliation(s)
- Rawa K. Ismail
- Dutch Institute for Clinical Auditing, Leiden
- Division of Pharmacoepidemiology and Clinical Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Utrecht
- Medicines Evaluation Board, Utrecht
| | | | - Anthonius de Boer
- Division of Pharmacoepidemiology and Clinical Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Utrecht
- Medicines Evaluation Board, Utrecht
| | | | | | | | | | - Maureen J.B. Aarts
- Department of Medical Oncology, Grow School for Oncology and Developmental Biology Maastricht University Medical Centre, Maastricht
| | | | - Christian U. Blank
- Department of Medical Oncology and Immunology, Netherlands Cancer Institute, Amsterdam
| | | | | | - John B.A.G. Haanen
- Department of Medical Oncology and Immunology, Netherlands Cancer Institute, Amsterdam
| | - Geke A.P. Hospers
- Department of Medical Oncology, University Medical Centre Groningen, Groningen
| | - Ellen Kapiteijn
- Department of Medical Oncology, Leiden University Medical Centre, Leiden
| | - Djura Piersma
- Department of Internal Medicine, Medisch Spectrum Twente, Enschede
| | | | | | - Art Vreugdenhil
- Department of Internal Medicine, Maxima Medical Centre, Eindhoven
| | | | | | - Michel W.J.M. Wouters
- Dutch Institute for Clinical Auditing, Leiden
- Department of Surgical Oncology, Netherlands Cancer Institute, Plesmanlaan, Amsterdam
- Department of Biomedical Data Sciences, Leiden University Medical Centre, Leiden, The Netherlands
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van Breeschoten J, Ismail RK, Wouters MW, Hilarius DL, de Wreede LC, Haanen JB, Blank CU, Aarts MJ, van den Berkmortel FW, de Groot JWB, Hospers GA, Kapiteijn E, Piersma D, van Rijn RS, Stevense-den Boer MA, van der Veldt AA, Vreugdenhil G, Boers-Sonderen MJ, Suijkerbuijk KP, van den Eertwegh AJ. End-of-Life Use of Systemic Therapy in Patients With Advanced Melanoma: A Nationwide Cohort Study. JCO Oncol Pract 2022; 18:e1611-e1620. [DOI: 10.1200/op.22.00061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
PURPOSE: The introduction of immune checkpoint inhibitors and targeted therapies improved the overall survival of patients with advanced melanoma. It is not known how often these costly treatments with potential serious side effects are ineffectively applied in the last phase of life. This study aimed to investigate the start of a new systemic therapy within 45 and 90 days of death in Dutch patients with advanced melanoma. METHODS: We selected patients who were diagnosed with unresectable IIIC or stage IV melanoma, registered in the Dutch Melanoma Treatment Registry, and died between 2013 and 2019. Primary outcome was the probability of starting a new systemic therapy 45 and 90 days before death. Secondary outcomes were type of systemic therapy started, grade 3/4 adverse events (AEs), and the total costs of systemic therapies. RESULTS: Between 2013 and 2019, 3,797 patients with unresectable IIIC or stage IV melanoma were entered in the registry and died. The percentage of patients receiving a new systemic therapy within 45 and 90 days before death was significantly different between Dutch melanoma centers (varying from 6% to 23% and 20% to 46%, respectively). Thirteen percent of patients (n = 146) developed grade 3/4 AEs in the last period before death. The majority of patients with an AE required hospital admission (n = 102, 69.6%). Mean total costs of systemic therapy per cohort year of the patients who received a new systemic therapy within 90 days before death were 2.3%-2.8% of the total costs spent on melanoma therapies. CONCLUSION: The minority of Dutch patients with metastatic melanoma started a new systemic therapy in the last phase of life. However, the percentages varied between Dutch melanoma centers. Financial impact of these therapies in the last phase of life is relatively small.
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Affiliation(s)
- Jesper van Breeschoten
- Dutch Institute for Clinical Auditing, Leiden, the Netherlands
- Department of Medical Oncology, Amsterdam UMC, VU University Medical Center, Cancer Center Amsterdam, Amsterdam, the Netherlands
| | - Rawa K. Ismail
- Dutch Institute for Clinical Auditing, Leiden, the Netherlands
- Division of Pharmacoepidemiology and Clinical Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Utrecht, the Netherlands
| | - Michel W.J.M. Wouters
- Dutch Institute for Clinical Auditing, Leiden, the Netherlands
- Department of Surgical Oncology, Netherlands Cancer Institute, Amsterdam, the Netherlands
- Department of Biomedical Data Sciences, Leiden University Medical Center, Leiden, the Netherlands
| | | | - Liesbeth C. de Wreede
- Department of Biomedical Data Sciences, Leiden University Medical Center, Leiden, the Netherlands
| | - John B. Haanen
- Department of Medical Oncology and Immunology, Netherlands Cancer Institute, Amsterdam, the Netherlands
- Division of Molecular Oncology and Immunology, Netherlands Cancer Institute, Amsterdam, the Netherlands
- Department of Medical Oncology, Leiden University Medical Center, Leiden, the Netherlands
| | - Christian U. Blank
- Department of Medical Oncology and Immunology, Netherlands Cancer Institute, Amsterdam, the Netherlands
- Division of Molecular Oncology and Immunology, Netherlands Cancer Institute, Amsterdam, the Netherlands
| | - Maureen J.B. Aarts
- Department of Medical Oncology, GROW School for Oncology and Developmental Biology. Maastricht University Medical Center, Maastricht, the Netherlands
| | | | | | - Geke A.P. Hospers
- Department of Medical Oncology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Ellen Kapiteijn
- Department of Medical Oncology, Leiden University Medical Center, Leiden, the Netherlands
| | - Djura Piersma
- Department of Internal Medicine, Medisch Spectrum Twente, Enschede, the Netherlands
| | | | | | | | - Gerard Vreugdenhil
- Department of Internal Medicine, Maxima Medical Center, Eindhoven, the Netherlands
| | - Marye J. Boers-Sonderen
- Department of Medical Oncology, Radboud University Medical Center, Nijmegen, the Netherlands
| | | | - Alfons J.M. van den Eertwegh
- Department of Medical Oncology, Amsterdam UMC, VU University Medical Center, Cancer Center Amsterdam, Amsterdam, the Netherlands
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Boers J, Loudini N, Brunsch CL, Koza SA, de Vries EF, Glaudemans AW, Hospers GA, Schröder CP. Abstract PS3-05: Value of [18F]-FES-PET to solve clinical dilemmas in breast cancer patients: A retrospective study. Cancer Res 2021. [DOI: 10.1158/1538-7445.sabcs20-ps3-05] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Introduction: Breast cancer (BC) is a heterogeneous disease, in which estrogen receptor (ER) expression plays an important role in the majority of breast tumors. A clinical dilemma may arise when a metastasis biopsy to determine the ER status cannot be performed safely or when ER heterogeneity is suspected between tumor lesions. Whole-body ER imaging, such as 16α-[18F]-fluoro-17β-estradiol ([18F]-FES) positron emission tomography (PET), may have additional value in these situations. However, the role of this imaging technique in routine clinical practice remains to be further determined. Therefore, we assessed the value of [18F]-FES-PET in a large retrospective set of patients, by evaluating if the physicians’ clinical dilemma that remained after standard workup was solved by the [18F]-FES-PET scan. Methods: In this single center study, [18F]-FES-PET scans, performed in patients with (suspected) ER+ metastatic BC with remaining clinical dilemma after standard workup (such as computed tomography, [18F]-fluorodeoxyglucose ([18F]-FDG)-PET, bone scintigraphy, magnetic resonance imaging, or biopsy), performed at the UMCG between November 2009 and January 2019, were included. A whole-body [18F]-FES-PET scan was performed 60 min after ~200 MBq of [18F]-FES was injected intravenously. ER antagonists had to be discontinued at least 5 weeks before [18F]-FES-PET. Primary endpoint was the percentage of cases in which the referring physician’s clinical dilemma was solved based on the [18F]-FES-PET results. The dilemma was considered solved if 1) the [18F]-FES-PET provided a solution for the clinical dilemma (for example an extra metastatic site to biopsy), or 2) a treatment decision (to change or continue) was made based on the [18F]-FES-PET result. If the physician had doubts about the diagnosis after the [18F]-FES-PET examination, and additional workup was necessary for treatment decision-making, the dilemma was considered not solved. Secondary endpoints were type of clinical dilemma, and rate of [18F]-FES positive or negative PET scans (visual interpretation), related to frequency of solved dilemmas. Results: One hundred [18F]-FES-PET scans were performed in 83 patients. Clinical dilemma types were: 1) inability to determine extent of (suspected) metastatic disease with standard workup (n=52), 2) unclear disease ER status (n=31), and 3) inability to determine which primary tumor caused metastases (n=17). Dilemmas were solved by [18F]-FES-PET in 87/100 cases (87%). In these 87 cases, treatment was changed in 52 cases, and continued in 35 cases. The frequency of solved dilemmas was not related to the type of clinical dilemma. In contrast, the frequency of solved dilemmas was related to whether scans were [18F]-FES positive or negative. Out of the 63 [18F]-FES positive scans, the clinical dilemma was solved in 61 cases (97%); in 26 out of the 37 [18F]-FES negative scans (70%) the dilemma was solved (p<0.001). Conclusion: In this real life study of BC patients with a clinical dilemma after standard workup, we showed that [18F]-FES-PET solved the dilemma in the large majority of cases. Relevant treatment decisions were made based on the scan, particularly in ER+ disease. This indicates that the [18F]-FES-PET can be of value to solve clinical dilemmas in BC patients. Ultimately, this can support optimal treatment in these patients and potentially improve outcome. Prospective trials are currently ongoing to further assess this.
Citation Format: Jorianne Boers, Naila Loudini, Celina L. Brunsch, Sylvia A. Koza, Erik F.J. de Vries, Andor W.J.M. Glaudemans, Geke A.P. Hospers, Carolina P. Schröder. Value of [18F]-FES-PET to solve clinical dilemmas in breast cancer patients: A retrospective study [abstract]. In: Proceedings of the 2020 San Antonio Breast Cancer Virtual Symposium; 2020 Dec 8-11; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2021;81(4 Suppl):Abstract nr PS3-05.
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Affiliation(s)
- Jorianne Boers
- University Medical Center Groningen, Groningen, Netherlands
| | - Naila Loudini
- University Medical Center Groningen, Groningen, Netherlands
| | | | - Sylvia A. Koza
- University Medical Center Groningen, Groningen, Netherlands
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Boers J, Giatagana K, Schröder CP, Hospers GA, de Vries EF, Glaudemans AW. Image Quality and Interpretation of [18F]-FES-PET: Is There any Effect of Food Intake? Diagnostics (Basel) 2020; 10:diagnostics10100756. [PMID: 32993099 PMCID: PMC7600120 DOI: 10.3390/diagnostics10100756] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: 08/29/2020] [Revised: 09/21/2020] [Accepted: 09/23/2020] [Indexed: 11/16/2022] Open
Abstract
Background: High physiological 16α-[18F]-fluoro-17β-estradiol ([18F]-FES) uptake in the abdomen is a limitation of this positron emission tomography (PET) tracer. Therefore, we investigated the effect of food intake prior to PET acquisition on abdominal background activity in [18F]-FES-PET scans. Methods: Breast cancer patients referred for [18F]-FES-PET were included. Three groups were designed: (1) patients who consumed a chocolate bar (fatty meal) between tracer injection and imaging (n = 20), (2) patients who fasted before imaging (n = 20), and (3) patients without diet restrictions (control group, n = 20). We compared the physiological [18F]-FES uptake, expressed as mean standardized uptake value (SUVmean), in the abdomen between groups. Results: A significant difference in [18F]-FES uptake in the gall bladder and stomach lumen was observed between groups, with the lowest values for the chocolate group and highest for the fasting group (p = 0.015 and p = 0.011, respectively). Post hoc analysis showed significant differences in the SUVmean of these organs between the chocolate and fasting groups, but not between the chocolate and control groups. Conclusion: This exploratory study showed that, compared to fasting, eating chocolate decreases physiological gall bladder and stomach [18F]-FES uptake; further reduction through a normal diet was not seen. A prospective study is warranted to confirm this finding.
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Affiliation(s)
- Jorianne Boers
- Department of Medical Oncology, University Medical Center Groningen, University of Groningen, 9700 RB Groningen, The Netherlands; (K.G.); (C.P.S.); (G.A.P.H.)
- Correspondence: ; Tel.: +31-50-36-12821
| | - Katerina Giatagana
- Department of Medical Oncology, University Medical Center Groningen, University of Groningen, 9700 RB Groningen, The Netherlands; (K.G.); (C.P.S.); (G.A.P.H.)
| | - Carolina P. Schröder
- Department of Medical Oncology, University Medical Center Groningen, University of Groningen, 9700 RB Groningen, The Netherlands; (K.G.); (C.P.S.); (G.A.P.H.)
| | - Geke A.P. Hospers
- Department of Medical Oncology, University Medical Center Groningen, University of Groningen, 9700 RB Groningen, The Netherlands; (K.G.); (C.P.S.); (G.A.P.H.)
| | - Erik F.J. de Vries
- Department of Nuclear Medicine and Molecular Imaging, University Medical Center Groningen, University of Groningen, 9700 RB Groningen, The Netherlands; (E.F.J.d.V.); (A.W.J.M.G.)
| | - Andor W.J.M. Glaudemans
- Department of Nuclear Medicine and Molecular Imaging, University Medical Center Groningen, University of Groningen, 9700 RB Groningen, The Netherlands; (E.F.J.d.V.); (A.W.J.M.G.)
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van Zeijl MC, Boer FL, van Poelgeest MI, van den Eertwegh AJ, Wouters MW, de Wreede LC, Aarts MJ, van den Berkmortel FW, de Groot JWB, Hospers GA, Piersma D, van Rijn RS, Suijkerbuijk KP, ten Tije AJ, van der Veldt AA, Vreugdenhil G, Boers-Sonderen MJ, Kapiteijn EH, Haanen JB. Survival outcomes of patients with advanced mucosal melanoma diagnosed from 2013 to 2017 in the Netherlands – A nationwide population-based study. Eur J Cancer 2020; 137:127-135. [DOI: 10.1016/j.ejca.2020.05.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 04/18/2020] [Accepted: 05/20/2020] [Indexed: 02/06/2023]
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Schouwenburg MG, Suijkerbuijk KP, Koornstra RH, Jochems A, van Zeijl MC, van den Eertwegh AJ, Haanen JB, Aarts MJ, van Akkooi AC, van den Berkmortel FW, de Groot JWB, Hospers GA, Kapiteijn E, Kruit WH, Piersma D, van Rijn RS, ten Tije AJ, Vreugdenhil G, van der Hoeven JJ, Wouters MW. Switching to Immune Checkpoint Inhibitors upon Response to Targeted Therapy; The Road to Long-Term Survival in Advanced Melanoma Patients with Highly Elevated Serum LDH? Cancers (Basel) 2019; 11:E1940. [PMID: 31817189 PMCID: PMC6966631 DOI: 10.3390/cancers11121940] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2019] [Revised: 11/27/2019] [Accepted: 12/02/2019] [Indexed: 12/21/2022] Open
Abstract
The prognosis of patients with advanced melanoma has improved dramatically. However, the clinical outcomes of patients with highly elevated serum lactate dehydrogenase (LDH) remain very poor. The aim of this study was to explore whether patients with normalized LDH after targeted therapy could benefit from subsequent treatment with immune checkpoint inhibitors (ICI). Data from all patients with BRAF-mutant metastatic melanoma with a highly elevated serum LDH at baseline (≥2× upper limit of normal) receiving first-line targeted therapy between 2012 and 2019 in the Netherlands were collected. Patients were stratified according to response status to targeted therapy and change in LDH at start of subsequent treatment with ICI. Differences in overall survival (OS) between the subgroups were compared using log-rank tests. After a median follow-up of 35.1 months, median OS of the total study population (n = 360) was 4.9 months (95% CI 4.4-5.4). Of all patients receiving subsequent treatment with ICI (n = 113), survival from start of subsequent treatment was significantly longer in patients who had normalized LDH and were still responding to targeted therapy compared to those with LDH that remained elevated (median OS 24.7 vs. 1.1 months). Our study suggests that introducing ICI upon response to targeted therapy with normalization of LDH could be an effective strategy in obtaining long-term survival in advanced melanoma patients with initial highly elevated serum LDH.
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Affiliation(s)
- Maartje G. Schouwenburg
- Department of Medical Oncology, Leiden University Medical Centre, Albinusdreef 2, 2333 ZA Leiden, The Netherlands; (A.J.); (E.K.)
- Dutch Institute for Clinical Auditing, Rijnsburgerweg 10, 2333 AA Leiden, the Netherlands;
| | - Karijn P.M. Suijkerbuijk
- Department of Medical Oncology, University Medical Centre Utrecht Cancer Center, Utrecht University, Heidelberglaan 100, 3584 CX Utrecht, The Netherlands;
| | - Rutger H.T. Koornstra
- Department of Medical Oncology, Radboud University Medical Centre, Geert Grooteplein Zuid 10, 6525 GA Nijmegen, The Netherlands;
| | - Anouk Jochems
- Department of Medical Oncology, Leiden University Medical Centre, Albinusdreef 2, 2333 ZA Leiden, The Netherlands; (A.J.); (E.K.)
- Dutch Institute for Clinical Auditing, Rijnsburgerweg 10, 2333 AA Leiden, the Netherlands;
| | - Michiel C.T. van Zeijl
- Department of Medical Oncology, Leiden University Medical Centre, Albinusdreef 2, 2333 ZA Leiden, The Netherlands; (A.J.); (E.K.)
- Dutch Institute for Clinical Auditing, Rijnsburgerweg 10, 2333 AA Leiden, the Netherlands;
| | - Alfons J.M. van den Eertwegh
- Department of Medical Oncology, VU University Medical Centre, De Boelelaan 1118, 1081 HZ Amsterdam, The Netherlands;
| | - John B.A.G. Haanen
- Department of Medical Oncology, Netherlands Cancer Institute—Antoni van Leeuwenhoek hospital, Plesmanlaan 121, 1066 CX Amsterdam, The Netherlands;
| | - Maureen J.B. Aarts
- Department of Medical Oncology, Maastricht University Medical Centre, P. Debyelaan 25, 6229 HX Maastricht, The Netherlands;
| | - Alexander C.J. van Akkooi
- Department of Surgical Oncology, Netherlands Cancer Institute—Antoni van Leeuwenhoek hospital, Plesmanlaan 121, 1066 CX Amsterdam, The Netherlands;
| | | | | | - Geke A.P. Hospers
- Department of Medical Oncology, University Medical Centre Groningen, Hanzeplein 1, 9713 GZ Groningen, The Netherlands;
| | - Ellen Kapiteijn
- Department of Medical Oncology, Leiden University Medical Centre, Albinusdreef 2, 2333 ZA Leiden, The Netherlands; (A.J.); (E.K.)
| | - Wim H. Kruit
- Department of Medical Oncology, Erasmus MC Cancer Institute, ‘s-Gravendijkwal 230, 3015 CE Rotterdam, The Netherlands;
| | - Djura Piersma
- Department of Internal Medicine, Medisch Spectrum Twente, Koningsplein 1, 7512 KZ Enschede, The Netherlands;
| | - Rozemarijn S. van Rijn
- Department of Internal Medicine, Medical Centre Leeuwarden, Henri Dunantweg 2, 8934 AD Leeuwarden, The Netherlands;
| | - Albert J. ten Tije
- Department of Internal Medicine, Amphia Hospital, Molengracht 21, 4818 CK Breda, The Netherlands;
| | - Gerard Vreugdenhil
- Department of Internal Medicine, Maxima Medical Centre, De Run 4600, 5504 DB Eindhoven, The Netherlands;
| | - Jacobus J.M. van der Hoeven
- Department of Medical Oncology, Leiden University Medical Centre, Albinusdreef 2, 2333 ZA Leiden, The Netherlands; (A.J.); (E.K.)
| | - Michel W.J.M. Wouters
- Dutch Institute for Clinical Auditing, Rijnsburgerweg 10, 2333 AA Leiden, the Netherlands;
- Department of Surgical Oncology, Netherlands Cancer Institute—Antoni van Leeuwenhoek hospital, Plesmanlaan 121, 1066 CX Amsterdam, The Netherlands;
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Nienhuis HH, van Kruchten M, Elias SG, Glaudemans AW, de Vries EF, Bongaerts AH, Schröder CP, de Vries EG, Hospers GA. 18F-Fluoroestradiol Tumor Uptake Is Heterogeneous and Influenced by Site of Metastasis in Breast Cancer Patients. J Nucl Med 2018; 59:1212-1218. [DOI: 10.2967/jnumed.117.198846] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Accepted: 03/21/2018] [Indexed: 01/18/2023] Open
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Noordman BJ, Verdam MG, Lagarde SM, Hulshof MC, van Hagen P, van Berge Henegouwen MI, Wijnhoven BP, van Laarhoven HW, Nieuwenhuijzen GA, Hospers GA, Bonenkamp JJ, Cuesta MA, Blaisse RJ, Busch OR, ten Kate FJ, Creemers GJM, Punt CJ, Plukker JT, Verheul HM, Spillenaar Bilgen EJ, van Dekken H, van der Sangen MJ, Rozema T, Biermann K, Beukema JC, Piet AH, van Rij CM, Reinders JG, Tilanus HW, Steyerberg EW, van der Gaast A, Sprangers MA, van Lanschot JJB. Effect of Neoadjuvant Chemoradiotherapy on Health-Related Quality of Life in Esophageal or Junctional Cancer: Results From the Randomized CROSS Trial. J Clin Oncol 2018; 36:268-275. [DOI: 10.1200/jco.2017.73.7718] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
Purpose To compare pre-agreed health-related quality of life (HRQOL) domains in patients with esophageal or junctional cancer who received neoadjuvant chemoradiotherapy (nCRT) followed by surgery or surgery alone. Secondary aims were to examine the effect of nCRT on HRQOL before surgery and the effect of surgery on HRQOL. Patients and Methods Patients were randomly assigned to nCRT (carboplatin plus paclitaxel with concurrent 41.4-Gy radiotherapy) followed by surgery or surgery alone. HRQOL was measured using the European Organisation for Research and Treatment of Cancer Quality of Life Questionnaire–Core 30 (QLQ-C30) and –Oesophageal Cancer Module (QLQ-OES24) questionnaires pretreatment and at 3, 6, 9, and 12 months postoperatively. The nCRT group also received preoperative questionnaires. Physical functioning (PF; QLQ-C30) and eating problems (EA; QLQ-OES24) were chosen as predefined primary end points. Predefined secondary end points were global QOL (GQOL; QLQ-C30), fatigue (FA; QLQ-C30), and emotional problems (EM; QLQ-OES24). Results A total of 363 patients were analyzed. No statistically significant differences in postoperative HRQOL were found between treatment groups. In the nCRT group, PF, EA, GQOL, FA, and EM scores deteriorated 1 week after nCRT (Cohen’s d: −0.93, P < .001; 0.47, P < .001; −0.84, P < .001; 1.45, P < .001; and 0.32, P = .001, respectively). In both treatment groups, all end points declined 3 months postoperatively compared with baseline (Cohen’s d: −1.00, 0.33, −0.47, −0.34, and 0.33, respectively; all P < .001), followed by a continuous gradual improvement. EA, GQOL, and EM were restored to baseline levels during follow-up, whereas PF and FA remained impaired 1 year postoperatively (Cohen’s d: 0.52 and −0.53, respectively; both P < .001). Conclusion Although HRQOL declined during nCRT, no effect of nCRT was apparent on postoperative HRQOL compared with surgery alone. In addition to the improvement in survival, these findings support the view that nCRT according to the Chemoradiotherapy for Esophageal Cancer Followed by Surgery Study–regimen can be regarded as a standard of care.
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Affiliation(s)
- Bo Jan Noordman
- Bo Jan Noordman, Sjoerd M. Lagarde, Pieter van Hagen, Bas P.L. Wijnhoven, Fiebo J.W. ten Kate, Katharina Biermann, Caroline M. van Rij, Hugo W. Tilanus, Ewout W. Steyerberg, Ate van der Gaast, and J. Jan B. van Lanschot, Erasmus MC–University Medical Center Rotterdam; Mathilde G.E. Verdam, Maarten C.C.M. Hulshof, Mark I. van Berge Henegouwen, Hanneke W.M. van Laarhoven, Olivier R. Busch, Fiebo J.W. ten Kate, Cornelis J.A. Punt, and Mirjam A.G. Sprangers, Academic Medical Center; Miguel A. Cuesta, Henk M
| | - Mathilde G.E. Verdam
- Bo Jan Noordman, Sjoerd M. Lagarde, Pieter van Hagen, Bas P.L. Wijnhoven, Fiebo J.W. ten Kate, Katharina Biermann, Caroline M. van Rij, Hugo W. Tilanus, Ewout W. Steyerberg, Ate van der Gaast, and J. Jan B. van Lanschot, Erasmus MC–University Medical Center Rotterdam; Mathilde G.E. Verdam, Maarten C.C.M. Hulshof, Mark I. van Berge Henegouwen, Hanneke W.M. van Laarhoven, Olivier R. Busch, Fiebo J.W. ten Kate, Cornelis J.A. Punt, and Mirjam A.G. Sprangers, Academic Medical Center; Miguel A. Cuesta, Henk M
| | - Sjoerd M. Lagarde
- Bo Jan Noordman, Sjoerd M. Lagarde, Pieter van Hagen, Bas P.L. Wijnhoven, Fiebo J.W. ten Kate, Katharina Biermann, Caroline M. van Rij, Hugo W. Tilanus, Ewout W. Steyerberg, Ate van der Gaast, and J. Jan B. van Lanschot, Erasmus MC–University Medical Center Rotterdam; Mathilde G.E. Verdam, Maarten C.C.M. Hulshof, Mark I. van Berge Henegouwen, Hanneke W.M. van Laarhoven, Olivier R. Busch, Fiebo J.W. ten Kate, Cornelis J.A. Punt, and Mirjam A.G. Sprangers, Academic Medical Center; Miguel A. Cuesta, Henk M
| | - Maarten C.C.M. Hulshof
- Bo Jan Noordman, Sjoerd M. Lagarde, Pieter van Hagen, Bas P.L. Wijnhoven, Fiebo J.W. ten Kate, Katharina Biermann, Caroline M. van Rij, Hugo W. Tilanus, Ewout W. Steyerberg, Ate van der Gaast, and J. Jan B. van Lanschot, Erasmus MC–University Medical Center Rotterdam; Mathilde G.E. Verdam, Maarten C.C.M. Hulshof, Mark I. van Berge Henegouwen, Hanneke W.M. van Laarhoven, Olivier R. Busch, Fiebo J.W. ten Kate, Cornelis J.A. Punt, and Mirjam A.G. Sprangers, Academic Medical Center; Miguel A. Cuesta, Henk M
| | - Pieter van Hagen
- Bo Jan Noordman, Sjoerd M. Lagarde, Pieter van Hagen, Bas P.L. Wijnhoven, Fiebo J.W. ten Kate, Katharina Biermann, Caroline M. van Rij, Hugo W. Tilanus, Ewout W. Steyerberg, Ate van der Gaast, and J. Jan B. van Lanschot, Erasmus MC–University Medical Center Rotterdam; Mathilde G.E. Verdam, Maarten C.C.M. Hulshof, Mark I. van Berge Henegouwen, Hanneke W.M. van Laarhoven, Olivier R. Busch, Fiebo J.W. ten Kate, Cornelis J.A. Punt, and Mirjam A.G. Sprangers, Academic Medical Center; Miguel A. Cuesta, Henk M
| | - Mark I. van Berge Henegouwen
- Bo Jan Noordman, Sjoerd M. Lagarde, Pieter van Hagen, Bas P.L. Wijnhoven, Fiebo J.W. ten Kate, Katharina Biermann, Caroline M. van Rij, Hugo W. Tilanus, Ewout W. Steyerberg, Ate van der Gaast, and J. Jan B. van Lanschot, Erasmus MC–University Medical Center Rotterdam; Mathilde G.E. Verdam, Maarten C.C.M. Hulshof, Mark I. van Berge Henegouwen, Hanneke W.M. van Laarhoven, Olivier R. Busch, Fiebo J.W. ten Kate, Cornelis J.A. Punt, and Mirjam A.G. Sprangers, Academic Medical Center; Miguel A. Cuesta, Henk M
| | - Bas P.L. Wijnhoven
- Bo Jan Noordman, Sjoerd M. Lagarde, Pieter van Hagen, Bas P.L. Wijnhoven, Fiebo J.W. ten Kate, Katharina Biermann, Caroline M. van Rij, Hugo W. Tilanus, Ewout W. Steyerberg, Ate van der Gaast, and J. Jan B. van Lanschot, Erasmus MC–University Medical Center Rotterdam; Mathilde G.E. Verdam, Maarten C.C.M. Hulshof, Mark I. van Berge Henegouwen, Hanneke W.M. van Laarhoven, Olivier R. Busch, Fiebo J.W. ten Kate, Cornelis J.A. Punt, and Mirjam A.G. Sprangers, Academic Medical Center; Miguel A. Cuesta, Henk M
| | - Hanneke W.M. van Laarhoven
- Bo Jan Noordman, Sjoerd M. Lagarde, Pieter van Hagen, Bas P.L. Wijnhoven, Fiebo J.W. ten Kate, Katharina Biermann, Caroline M. van Rij, Hugo W. Tilanus, Ewout W. Steyerberg, Ate van der Gaast, and J. Jan B. van Lanschot, Erasmus MC–University Medical Center Rotterdam; Mathilde G.E. Verdam, Maarten C.C.M. Hulshof, Mark I. van Berge Henegouwen, Hanneke W.M. van Laarhoven, Olivier R. Busch, Fiebo J.W. ten Kate, Cornelis J.A. Punt, and Mirjam A.G. Sprangers, Academic Medical Center; Miguel A. Cuesta, Henk M
| | - Grard A.P. Nieuwenhuijzen
- Bo Jan Noordman, Sjoerd M. Lagarde, Pieter van Hagen, Bas P.L. Wijnhoven, Fiebo J.W. ten Kate, Katharina Biermann, Caroline M. van Rij, Hugo W. Tilanus, Ewout W. Steyerberg, Ate van der Gaast, and J. Jan B. van Lanschot, Erasmus MC–University Medical Center Rotterdam; Mathilde G.E. Verdam, Maarten C.C.M. Hulshof, Mark I. van Berge Henegouwen, Hanneke W.M. van Laarhoven, Olivier R. Busch, Fiebo J.W. ten Kate, Cornelis J.A. Punt, and Mirjam A.G. Sprangers, Academic Medical Center; Miguel A. Cuesta, Henk M
| | - Geke A.P. Hospers
- Bo Jan Noordman, Sjoerd M. Lagarde, Pieter van Hagen, Bas P.L. Wijnhoven, Fiebo J.W. ten Kate, Katharina Biermann, Caroline M. van Rij, Hugo W. Tilanus, Ewout W. Steyerberg, Ate van der Gaast, and J. Jan B. van Lanschot, Erasmus MC–University Medical Center Rotterdam; Mathilde G.E. Verdam, Maarten C.C.M. Hulshof, Mark I. van Berge Henegouwen, Hanneke W.M. van Laarhoven, Olivier R. Busch, Fiebo J.W. ten Kate, Cornelis J.A. Punt, and Mirjam A.G. Sprangers, Academic Medical Center; Miguel A. Cuesta, Henk M
| | - Johannes J. Bonenkamp
- Bo Jan Noordman, Sjoerd M. Lagarde, Pieter van Hagen, Bas P.L. Wijnhoven, Fiebo J.W. ten Kate, Katharina Biermann, Caroline M. van Rij, Hugo W. Tilanus, Ewout W. Steyerberg, Ate van der Gaast, and J. Jan B. van Lanschot, Erasmus MC–University Medical Center Rotterdam; Mathilde G.E. Verdam, Maarten C.C.M. Hulshof, Mark I. van Berge Henegouwen, Hanneke W.M. van Laarhoven, Olivier R. Busch, Fiebo J.W. ten Kate, Cornelis J.A. Punt, and Mirjam A.G. Sprangers, Academic Medical Center; Miguel A. Cuesta, Henk M
| | - Miguel A. Cuesta
- Bo Jan Noordman, Sjoerd M. Lagarde, Pieter van Hagen, Bas P.L. Wijnhoven, Fiebo J.W. ten Kate, Katharina Biermann, Caroline M. van Rij, Hugo W. Tilanus, Ewout W. Steyerberg, Ate van der Gaast, and J. Jan B. van Lanschot, Erasmus MC–University Medical Center Rotterdam; Mathilde G.E. Verdam, Maarten C.C.M. Hulshof, Mark I. van Berge Henegouwen, Hanneke W.M. van Laarhoven, Olivier R. Busch, Fiebo J.W. ten Kate, Cornelis J.A. Punt, and Mirjam A.G. Sprangers, Academic Medical Center; Miguel A. Cuesta, Henk M
| | - Reinoud J.B. Blaisse
- Bo Jan Noordman, Sjoerd M. Lagarde, Pieter van Hagen, Bas P.L. Wijnhoven, Fiebo J.W. ten Kate, Katharina Biermann, Caroline M. van Rij, Hugo W. Tilanus, Ewout W. Steyerberg, Ate van der Gaast, and J. Jan B. van Lanschot, Erasmus MC–University Medical Center Rotterdam; Mathilde G.E. Verdam, Maarten C.C.M. Hulshof, Mark I. van Berge Henegouwen, Hanneke W.M. van Laarhoven, Olivier R. Busch, Fiebo J.W. ten Kate, Cornelis J.A. Punt, and Mirjam A.G. Sprangers, Academic Medical Center; Miguel A. Cuesta, Henk M
| | - Olivier R. Busch
- Bo Jan Noordman, Sjoerd M. Lagarde, Pieter van Hagen, Bas P.L. Wijnhoven, Fiebo J.W. ten Kate, Katharina Biermann, Caroline M. van Rij, Hugo W. Tilanus, Ewout W. Steyerberg, Ate van der Gaast, and J. Jan B. van Lanschot, Erasmus MC–University Medical Center Rotterdam; Mathilde G.E. Verdam, Maarten C.C.M. Hulshof, Mark I. van Berge Henegouwen, Hanneke W.M. van Laarhoven, Olivier R. Busch, Fiebo J.W. ten Kate, Cornelis J.A. Punt, and Mirjam A.G. Sprangers, Academic Medical Center; Miguel A. Cuesta, Henk M
| | - Fiebo J.W. ten Kate
- Bo Jan Noordman, Sjoerd M. Lagarde, Pieter van Hagen, Bas P.L. Wijnhoven, Fiebo J.W. ten Kate, Katharina Biermann, Caroline M. van Rij, Hugo W. Tilanus, Ewout W. Steyerberg, Ate van der Gaast, and J. Jan B. van Lanschot, Erasmus MC–University Medical Center Rotterdam; Mathilde G.E. Verdam, Maarten C.C.M. Hulshof, Mark I. van Berge Henegouwen, Hanneke W.M. van Laarhoven, Olivier R. Busch, Fiebo J.W. ten Kate, Cornelis J.A. Punt, and Mirjam A.G. Sprangers, Academic Medical Center; Miguel A. Cuesta, Henk M
| | - Geert-Jan M. Creemers
- Bo Jan Noordman, Sjoerd M. Lagarde, Pieter van Hagen, Bas P.L. Wijnhoven, Fiebo J.W. ten Kate, Katharina Biermann, Caroline M. van Rij, Hugo W. Tilanus, Ewout W. Steyerberg, Ate van der Gaast, and J. Jan B. van Lanschot, Erasmus MC–University Medical Center Rotterdam; Mathilde G.E. Verdam, Maarten C.C.M. Hulshof, Mark I. van Berge Henegouwen, Hanneke W.M. van Laarhoven, Olivier R. Busch, Fiebo J.W. ten Kate, Cornelis J.A. Punt, and Mirjam A.G. Sprangers, Academic Medical Center; Miguel A. Cuesta, Henk M
| | - Cornelis J.A. Punt
- Bo Jan Noordman, Sjoerd M. Lagarde, Pieter van Hagen, Bas P.L. Wijnhoven, Fiebo J.W. ten Kate, Katharina Biermann, Caroline M. van Rij, Hugo W. Tilanus, Ewout W. Steyerberg, Ate van der Gaast, and J. Jan B. van Lanschot, Erasmus MC–University Medical Center Rotterdam; Mathilde G.E. Verdam, Maarten C.C.M. Hulshof, Mark I. van Berge Henegouwen, Hanneke W.M. van Laarhoven, Olivier R. Busch, Fiebo J.W. ten Kate, Cornelis J.A. Punt, and Mirjam A.G. Sprangers, Academic Medical Center; Miguel A. Cuesta, Henk M
| | - John Th.M. Plukker
- Bo Jan Noordman, Sjoerd M. Lagarde, Pieter van Hagen, Bas P.L. Wijnhoven, Fiebo J.W. ten Kate, Katharina Biermann, Caroline M. van Rij, Hugo W. Tilanus, Ewout W. Steyerberg, Ate van der Gaast, and J. Jan B. van Lanschot, Erasmus MC–University Medical Center Rotterdam; Mathilde G.E. Verdam, Maarten C.C.M. Hulshof, Mark I. van Berge Henegouwen, Hanneke W.M. van Laarhoven, Olivier R. Busch, Fiebo J.W. ten Kate, Cornelis J.A. Punt, and Mirjam A.G. Sprangers, Academic Medical Center; Miguel A. Cuesta, Henk M
| | - Henk M.W. Verheul
- Bo Jan Noordman, Sjoerd M. Lagarde, Pieter van Hagen, Bas P.L. Wijnhoven, Fiebo J.W. ten Kate, Katharina Biermann, Caroline M. van Rij, Hugo W. Tilanus, Ewout W. Steyerberg, Ate van der Gaast, and J. Jan B. van Lanschot, Erasmus MC–University Medical Center Rotterdam; Mathilde G.E. Verdam, Maarten C.C.M. Hulshof, Mark I. van Berge Henegouwen, Hanneke W.M. van Laarhoven, Olivier R. Busch, Fiebo J.W. ten Kate, Cornelis J.A. Punt, and Mirjam A.G. Sprangers, Academic Medical Center; Miguel A. Cuesta, Henk M
| | - Ernst J. Spillenaar Bilgen
- Bo Jan Noordman, Sjoerd M. Lagarde, Pieter van Hagen, Bas P.L. Wijnhoven, Fiebo J.W. ten Kate, Katharina Biermann, Caroline M. van Rij, Hugo W. Tilanus, Ewout W. Steyerberg, Ate van der Gaast, and J. Jan B. van Lanschot, Erasmus MC–University Medical Center Rotterdam; Mathilde G.E. Verdam, Maarten C.C.M. Hulshof, Mark I. van Berge Henegouwen, Hanneke W.M. van Laarhoven, Olivier R. Busch, Fiebo J.W. ten Kate, Cornelis J.A. Punt, and Mirjam A.G. Sprangers, Academic Medical Center; Miguel A. Cuesta, Henk M
| | - Herman van Dekken
- Bo Jan Noordman, Sjoerd M. Lagarde, Pieter van Hagen, Bas P.L. Wijnhoven, Fiebo J.W. ten Kate, Katharina Biermann, Caroline M. van Rij, Hugo W. Tilanus, Ewout W. Steyerberg, Ate van der Gaast, and J. Jan B. van Lanschot, Erasmus MC–University Medical Center Rotterdam; Mathilde G.E. Verdam, Maarten C.C.M. Hulshof, Mark I. van Berge Henegouwen, Hanneke W.M. van Laarhoven, Olivier R. Busch, Fiebo J.W. ten Kate, Cornelis J.A. Punt, and Mirjam A.G. Sprangers, Academic Medical Center; Miguel A. Cuesta, Henk M
| | - Maurice J.C. van der Sangen
- Bo Jan Noordman, Sjoerd M. Lagarde, Pieter van Hagen, Bas P.L. Wijnhoven, Fiebo J.W. ten Kate, Katharina Biermann, Caroline M. van Rij, Hugo W. Tilanus, Ewout W. Steyerberg, Ate van der Gaast, and J. Jan B. van Lanschot, Erasmus MC–University Medical Center Rotterdam; Mathilde G.E. Verdam, Maarten C.C.M. Hulshof, Mark I. van Berge Henegouwen, Hanneke W.M. van Laarhoven, Olivier R. Busch, Fiebo J.W. ten Kate, Cornelis J.A. Punt, and Mirjam A.G. Sprangers, Academic Medical Center; Miguel A. Cuesta, Henk M
| | - Tom Rozema
- Bo Jan Noordman, Sjoerd M. Lagarde, Pieter van Hagen, Bas P.L. Wijnhoven, Fiebo J.W. ten Kate, Katharina Biermann, Caroline M. van Rij, Hugo W. Tilanus, Ewout W. Steyerberg, Ate van der Gaast, and J. Jan B. van Lanschot, Erasmus MC–University Medical Center Rotterdam; Mathilde G.E. Verdam, Maarten C.C.M. Hulshof, Mark I. van Berge Henegouwen, Hanneke W.M. van Laarhoven, Olivier R. Busch, Fiebo J.W. ten Kate, Cornelis J.A. Punt, and Mirjam A.G. Sprangers, Academic Medical Center; Miguel A. Cuesta, Henk M
| | - Katharina Biermann
- Bo Jan Noordman, Sjoerd M. Lagarde, Pieter van Hagen, Bas P.L. Wijnhoven, Fiebo J.W. ten Kate, Katharina Biermann, Caroline M. van Rij, Hugo W. Tilanus, Ewout W. Steyerberg, Ate van der Gaast, and J. Jan B. van Lanschot, Erasmus MC–University Medical Center Rotterdam; Mathilde G.E. Verdam, Maarten C.C.M. Hulshof, Mark I. van Berge Henegouwen, Hanneke W.M. van Laarhoven, Olivier R. Busch, Fiebo J.W. ten Kate, Cornelis J.A. Punt, and Mirjam A.G. Sprangers, Academic Medical Center; Miguel A. Cuesta, Henk M
| | - Jannet C. Beukema
- Bo Jan Noordman, Sjoerd M. Lagarde, Pieter van Hagen, Bas P.L. Wijnhoven, Fiebo J.W. ten Kate, Katharina Biermann, Caroline M. van Rij, Hugo W. Tilanus, Ewout W. Steyerberg, Ate van der Gaast, and J. Jan B. van Lanschot, Erasmus MC–University Medical Center Rotterdam; Mathilde G.E. Verdam, Maarten C.C.M. Hulshof, Mark I. van Berge Henegouwen, Hanneke W.M. van Laarhoven, Olivier R. Busch, Fiebo J.W. ten Kate, Cornelis J.A. Punt, and Mirjam A.G. Sprangers, Academic Medical Center; Miguel A. Cuesta, Henk M
| | - Anna H.M. Piet
- Bo Jan Noordman, Sjoerd M. Lagarde, Pieter van Hagen, Bas P.L. Wijnhoven, Fiebo J.W. ten Kate, Katharina Biermann, Caroline M. van Rij, Hugo W. Tilanus, Ewout W. Steyerberg, Ate van der Gaast, and J. Jan B. van Lanschot, Erasmus MC–University Medical Center Rotterdam; Mathilde G.E. Verdam, Maarten C.C.M. Hulshof, Mark I. van Berge Henegouwen, Hanneke W.M. van Laarhoven, Olivier R. Busch, Fiebo J.W. ten Kate, Cornelis J.A. Punt, and Mirjam A.G. Sprangers, Academic Medical Center; Miguel A. Cuesta, Henk M
| | - Caroline M. van Rij
- Bo Jan Noordman, Sjoerd M. Lagarde, Pieter van Hagen, Bas P.L. Wijnhoven, Fiebo J.W. ten Kate, Katharina Biermann, Caroline M. van Rij, Hugo W. Tilanus, Ewout W. Steyerberg, Ate van der Gaast, and J. Jan B. van Lanschot, Erasmus MC–University Medical Center Rotterdam; Mathilde G.E. Verdam, Maarten C.C.M. Hulshof, Mark I. van Berge Henegouwen, Hanneke W.M. van Laarhoven, Olivier R. Busch, Fiebo J.W. ten Kate, Cornelis J.A. Punt, and Mirjam A.G. Sprangers, Academic Medical Center; Miguel A. Cuesta, Henk M
| | - Janny G. Reinders
- Bo Jan Noordman, Sjoerd M. Lagarde, Pieter van Hagen, Bas P.L. Wijnhoven, Fiebo J.W. ten Kate, Katharina Biermann, Caroline M. van Rij, Hugo W. Tilanus, Ewout W. Steyerberg, Ate van der Gaast, and J. Jan B. van Lanschot, Erasmus MC–University Medical Center Rotterdam; Mathilde G.E. Verdam, Maarten C.C.M. Hulshof, Mark I. van Berge Henegouwen, Hanneke W.M. van Laarhoven, Olivier R. Busch, Fiebo J.W. ten Kate, Cornelis J.A. Punt, and Mirjam A.G. Sprangers, Academic Medical Center; Miguel A. Cuesta, Henk M
| | - Hugo W. Tilanus
- Bo Jan Noordman, Sjoerd M. Lagarde, Pieter van Hagen, Bas P.L. Wijnhoven, Fiebo J.W. ten Kate, Katharina Biermann, Caroline M. van Rij, Hugo W. Tilanus, Ewout W. Steyerberg, Ate van der Gaast, and J. Jan B. van Lanschot, Erasmus MC–University Medical Center Rotterdam; Mathilde G.E. Verdam, Maarten C.C.M. Hulshof, Mark I. van Berge Henegouwen, Hanneke W.M. van Laarhoven, Olivier R. Busch, Fiebo J.W. ten Kate, Cornelis J.A. Punt, and Mirjam A.G. Sprangers, Academic Medical Center; Miguel A. Cuesta, Henk M
| | - Ewout W. Steyerberg
- Bo Jan Noordman, Sjoerd M. Lagarde, Pieter van Hagen, Bas P.L. Wijnhoven, Fiebo J.W. ten Kate, Katharina Biermann, Caroline M. van Rij, Hugo W. Tilanus, Ewout W. Steyerberg, Ate van der Gaast, and J. Jan B. van Lanschot, Erasmus MC–University Medical Center Rotterdam; Mathilde G.E. Verdam, Maarten C.C.M. Hulshof, Mark I. van Berge Henegouwen, Hanneke W.M. van Laarhoven, Olivier R. Busch, Fiebo J.W. ten Kate, Cornelis J.A. Punt, and Mirjam A.G. Sprangers, Academic Medical Center; Miguel A. Cuesta, Henk M
| | - Ate van der Gaast
- Bo Jan Noordman, Sjoerd M. Lagarde, Pieter van Hagen, Bas P.L. Wijnhoven, Fiebo J.W. ten Kate, Katharina Biermann, Caroline M. van Rij, Hugo W. Tilanus, Ewout W. Steyerberg, Ate van der Gaast, and J. Jan B. van Lanschot, Erasmus MC–University Medical Center Rotterdam; Mathilde G.E. Verdam, Maarten C.C.M. Hulshof, Mark I. van Berge Henegouwen, Hanneke W.M. van Laarhoven, Olivier R. Busch, Fiebo J.W. ten Kate, Cornelis J.A. Punt, and Mirjam A.G. Sprangers, Academic Medical Center; Miguel A. Cuesta, Henk M
| | - Mirjam A.G. Sprangers
- Bo Jan Noordman, Sjoerd M. Lagarde, Pieter van Hagen, Bas P.L. Wijnhoven, Fiebo J.W. ten Kate, Katharina Biermann, Caroline M. van Rij, Hugo W. Tilanus, Ewout W. Steyerberg, Ate van der Gaast, and J. Jan B. van Lanschot, Erasmus MC–University Medical Center Rotterdam; Mathilde G.E. Verdam, Maarten C.C.M. Hulshof, Mark I. van Berge Henegouwen, Hanneke W.M. van Laarhoven, Olivier R. Busch, Fiebo J.W. ten Kate, Cornelis J.A. Punt, and Mirjam A.G. Sprangers, Academic Medical Center; Miguel A. Cuesta, Henk M
| | - J. Jan B. van Lanschot
- Bo Jan Noordman, Sjoerd M. Lagarde, Pieter van Hagen, Bas P.L. Wijnhoven, Fiebo J.W. ten Kate, Katharina Biermann, Caroline M. van Rij, Hugo W. Tilanus, Ewout W. Steyerberg, Ate van der Gaast, and J. Jan B. van Lanschot, Erasmus MC–University Medical Center Rotterdam; Mathilde G.E. Verdam, Maarten C.C.M. Hulshof, Mark I. van Berge Henegouwen, Hanneke W.M. van Laarhoven, Olivier R. Busch, Fiebo J.W. ten Kate, Cornelis J.A. Punt, and Mirjam A.G. Sprangers, Academic Medical Center; Miguel A. Cuesta, Henk M
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Venema CM, Mammatas LH, Schröder CP, van Kruchten M, Apollonio G, Glaudemans AW, Bongaerts AH, Hoekstra OS, Verheul HM, Boven E, van der Vegt B, de Vries EF, de Vries EG, Boellaard R, Menke van der Houven van Oordt CW, Hospers GA. Androgen and Estrogen Receptor Imaging in Metastatic Breast Cancer Patients as a Surrogate for Tissue Biopsies. J Nucl Med 2017; 58:1906-1912. [DOI: 10.2967/jnumed.117.193649] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Accepted: 04/24/2017] [Indexed: 11/16/2022] Open
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Antunes IF, Willemsen AT, Sijbesma JW, Boerema AS, van Waarde A, Glaudemans AW, Dierckx RA, de Vries EG, Hospers GA, de Vries EF. In Vivo Quantification of ERβ Expression by Pharmacokinetic Modeling: Studies with 18F-FHNP PET. J Nucl Med 2017; 58:1743-1748. [DOI: 10.2967/jnumed.117.192666] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Accepted: 05/26/2017] [Indexed: 11/16/2022] Open
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van der Veen EL, Maarsingh P, Terwisscha van Scheltinga AG, Lub-de Hooge MN, Hospers GA, de Vries EF, de Vries. EG. Abstract 4208: Development of 18F-IL2: a PET radiotracer for imaging activated T-cells. Cancer Res 2016. [DOI: 10.1158/1538-7445.am2016-4208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Introduction: Activation of T-cells is accompanied by a strong up-regulation of interleukin-2 (IL2) receptor (CD25). Therefore PET imaging of IL2 receptors might be a suitable imaging biomarker for T-cell activation. 18F-IL2 PET could detect CD25-positive T-cells and the migration of these T-cells to distant sites of inflammation in SCID mice subcutaneously injected with human peripheral blood mononuclear cells1 and NOD mice with insulitis. Also a strong correlation was found between the accumulation of 18F-IL2 and the number of injected activated T-cells in immune-competent rats.2 In tumor bearing mice, 18F-IL2 PET could detect treatment-induced accumulation of activated T-cells in the tumor following local radiotherapy and/or vaccination.
Cancer immunotherapy is increasingly obtaining a place in clinical practice. However not all patients benefit. A biomarker for upfront or early response prediction for these immunotherapies might support patient selection before and during therapy. Potentially 18F-IL2 PET might serve this purpose. Therefore we aimed to accommodate the production of 18F-IL2 for use in clinical imaging studies.
Material and methods: In order to produce a GMP-compliant tracer the production is being implemented on the Eckert & Ziegler PharmTracer synthesis module. In this synthesis module, disposable cassettes, reactors and vials are used to avoid cross-contamination between productions. First the prosthetic group N-succinimidyl 4-fluorobenzoate (18F-SFB) is produced in 3 steps from cyclotron-produced 18F-fluoride. Subsequently, 18F-SFB is conjugated to human recombinant IL2 (Proleukin®). Various methods for synthesis and purification of 18F-SFB have been evaluated. Also purification of 18F-IL2 has been optimized. Quality control has been performed using ultra performance liquid chromatography (UPLC) and Thin Layer Chromatography (TLC).
Results: 18F-SFB was successfully synthesized with the Eckert & Ziegler PharmTracer synthesis module with decay-corrected radiochemical yields comparable to literature (range 28-64%). Major challenges have been encountered, most importantly regarding the purification of the 18F-SFB and 18F-IL2, stability of the IL2 and specific activity. The activated ester 18F-SFB was purified by high performance liquid chromatography (HPLC) to remove any impurities that could interfere with the conjugation. 18F-IL2 has been purified using PD-10 columns with PBS containing 0.05% SDS as mobile phase.
Conclusions: Several challenges for the GMP-compliant production of 18F-IL2 have been overcome. In the near future this tracer will be used in preclinical and clinical studies to non-invasively image activated T-cells before and during cancer immunotherapy. This can provide insight in the effects of cancer immunotherapy on the immune response.
References:
1. Di Gialleonardo V, et al. J Nucl Med.2012;53(5):679-86.
2. Di Gialleonardo V, et al. Eur J Nucl Med Mol Imaging.2012;39(10):1551-60.
Citation Format: Elly L. van der Veen, Petra Maarsingh, Anton G.T. Terwisscha van Scheltinga, Marjolijn N. Lub-de Hooge, Geke A.P. Hospers, Erik F.J. de Vries, Elisabeth G.E. de Vries. Development of 18F-IL2: a PET radiotracer for imaging activated T-cells. [abstract]. In: Proceedings of the 107th Annual Meeting of the American Association for Cancer Research; 2016 Apr 16-20; New Orleans, LA. Philadelphia (PA): AACR; Cancer Res 2016;76(14 Suppl):Abstract nr 4208.
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van den Brom RR, Mäkelburg AB, Schröder CP, de Vries EG, Hospers GA. Vemurafenib-Induced Disseminated Intravascular Coagulation in Metastatic Melanoma. J Clin Oncol 2015; 33:e133-4. [DOI: 10.1200/jco.2013.51.4471] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Rob R.H. van den Brom
- University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Anja B.U. Mäkelburg
- University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Carolien P. Schröder
- University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | | | - Geke A.P. Hospers
- University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
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Honing J, Pavlov KV, Mul VE, Karrenbeld A, Meijer C, Faiz Z, Smit JK, Hospers GA, Burgerhof JG, Kruyt FA, Kleibeuker JH, Plukker JT. CD44, SHH and SOX2 as novel biomarkers in esophageal cancer patients treated with neoadjuvant chemoradiotherapy. Radiother Oncol 2015; 117:152-8. [DOI: 10.1016/j.radonc.2015.08.031] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Revised: 08/26/2015] [Accepted: 08/29/2015] [Indexed: 02/04/2023]
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van Dijk TH, Tamas K, Beukema JC, Beets GL, Gelderblom AJ, de Jong KP, Nagtegaal ID, Rutten HJ, van de Velde CJ, Wiggers T, Hospers GA, Havenga K. Evaluation of short-course radiotherapy followed by neoadjuvant bevacizumab, capecitabine, and oxaliplatin and subsequent radical surgical treatment in primary stage IV rectal cancer. Ann Oncol 2013; 24:1762-1769. [PMID: 23524865 DOI: 10.1093/annonc/mdt124] [Citation(s) in RCA: 103] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND To evaluate the efficacy and tolerability of preoperative short-course radiotherapy followed by capecitabine and oxaliplatin treatment in combination with bevacizumab and subsequent radical surgical treatment of all tumor sites in patients with stage IV rectal cancer. PATIENTS AND METHODS Adults with primary metastasized rectal cancer were enrolled. They received radiotherapy (5 × 5 Gy) followed by bevacizumab (7.5 mg/kg, day 1) and oxaliplatin (130 mg/m(2), day 1) intravenously and capecitabine (1000 mg/m(2) twice daily orally, days 1-14) for up to six cycles. Surgery was carried out 6-8 weeks after the last bevacizumab dose. The percentage of radical surgical treatment, 2-year survival and recurrence rates, and treatment-related toxicity was evaluated. RESULTS Of 50 included patients, 42 (84%) had liver metastases, 5 (10%) lung metastases, and 3 (6%) both liver and lung metastases. Radical surgical treatment was possible in 36 (72%) patients. The 2-year overall survival rate was 80% [95% confidence interval (CI) 66.3%-90.0%]. The 2-year recurrence rate was 64% (95% CI 49.8%-84.5%). Toxic effects were tolerable. No treatment-related deaths occurred. CONCLUSIONS Radical surgical treatment of all tumor sites carried out after short-course radiotherapy, and bevacizumab-capecitabine-oxaliplatin combination therapy is a feasible and potentially curative approach in primary metastasized rectal cancer.
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Affiliation(s)
| | - K Tamas
- Department of Medical Oncology
| | - J C Beukema
- Department of Radiation Oncology, University of Groningen, University Medical Center Groningen
| | - G L Beets
- Department of Surgery, University Hospital Maastricht
| | - A J Gelderblom
- Department of Clinical Oncology, Leiden University Medical Center
| | - K P de Jong
- Department of Hepato-pancreato-biliary Surgery, University of Groningen, University Medical Center Groningen
| | - I D Nagtegaal
- Department of Pathology, University Medical Center St Radboud, Nijmegen
| | - H J Rutten
- Department of Surgery, Catharina Hospital, Eindhoven
| | - C J van de Velde
- Department of Surgery, Leiden University Medical Center, The Netherlands
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van den Brom RR, de Vries EG, Schröder CP, Hospers GA. Effect of vemurafenib on a V600R melanoma brain metastasis. Eur J Cancer 2013; 49:1795-6. [DOI: 10.1016/j.ejca.2013.02.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2013] [Accepted: 02/05/2013] [Indexed: 11/29/2022]
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van Kruchten M, Glaudemans AW, de Vries EF, Beets-Tan RG, Schröder CP, Dierckx RA, de Vries EG, Hospers GA. PET Imaging of Estrogen Receptors as a Diagnostic Tool for Breast Cancer Patients Presenting with a Clinical Dilemma. J Nucl Med 2012; 53:182-90. [DOI: 10.2967/jnumed.111.092734] [Citation(s) in RCA: 109] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Kruijff S, Bastiaannet E, Brouwers AH, Nagengast WB, Speijers MJ, Suurmeijer AJH, Hospers GA, Hoekstra HJ. Use of S-100B to evaluate therapy effects during bevacizumab induction treatment in AJCC stage III melanoma. Ann Surg Oncol 2011; 19:620-6. [PMID: 21861214 PMCID: PMC3264856 DOI: 10.1245/s10434-011-2027-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [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: 04/12/2011] [Indexed: 11/18/2022]
Abstract
AIM To investigate the feasibility of using bevacizumab to improve the survival of American Joint Committee on Cancer (AJCC) stage III melanoma patients, we investigated how a single bevacizumab treatment affected nodal disease and a panel of biomarkers in clinically fluorodeoxyglucose positron emission tomography (FDG-PET)/computed tomography (CT)-staged, stage III melanoma patients, prior to therapeutic lymph node dissection (TLND). METHODS Four weeks before TLND, nine patients (median age 50, range 28.8-62.1 years; two male, seven female) with palpable lymph node metastases received 7.5 mg/kg bevacizumab. Before and after this treatment, all patients were assessed by measurements of the maximum standardized uptake value (SUVmax) by FDG-PET scan, and serum S-100B and lactate dehydrogenase (LDH). After TLND, the dissection specimen was analyzed for number of removed lymph nodes, number of metastatic lymph nodes, and tumor necrosis. RESULTS Median follow-up was 15.5 (2.2-32.9) months. Histopathological analysis revealed tumor necrosis in six patients, of whom five had an S-100B decline and one had an unchanged S-100B level after bevacizumab. The other three patients showed an S-100B increase and no necrosis. Tumor necrosis was correlated with S-100B decrease (P = 0.048). No association was found between necrosis and the markers SUVmax and LDH. No wound healing disturbances were encountered. CONCLUSION Tumor necrosis in dissection specimens was associated with declining S-100B levels, while elevated S-100B was only found in cases with no necrosis. Bevacizumab might be useful in treating AJCC stage III melanoma patients prior to TLND, and S100-B appears to be a useful marker for assessment of treatment effects.
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Affiliation(s)
- S Kruijff
- Surgical Oncology, University Medical Centre Groningen, University of Groningen, Groningen, The Netherlands.
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Oude Munnink TH, Nagengast WB, Brouwers AH, Schröder CP, Hospers GA, Lub-de Hooge MN, van der Wall E, van Diest PJ, de Vries EGE. Molecular imaging of breast cancer. Breast 2010; 18 Suppl 3:S66-73. [PMID: 19914546 DOI: 10.1016/s0960-9776(09)70276-0] [Citation(s) in RCA: 79] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Molecular imaging of breast cancer can potentially be used for breast cancer screening, staging, restaging, response evaluation and guiding therapies. Techniques for molecular breast cancer imaging include magnetic resonance imaging (MRI), optical imaging, and radionuclide imaging with positron emission tomography (PET) or single photon emission computed tomography (SPECT). This review focuses on PET and SPECT imaging which can provide sensitive serial non invasive information of tumor characteristics. Most clinical data are gathered on the visualization of general processes such as glucose metabolism with the PET-tracer [(18)F]fluorodeoxyglucose (FDG) and DNA synthesis with [18F]fluoro-L-thymidine (FLT). Increasingly more breast cancer specific targets are imaged such as the estrogen receptor (ER), growth factors and growth factor receptors. Imaging of the ER with the PET tracer 16-alpha-[(18)F]fluoro-17-beta-estradiol (FES) has shown a good correlation between FES tumor uptake and ER density. (111)In-trastuzumab SPECT to image the human epidermal growth factor receptor 2 (HER2) showed that in most patients with metastatic HER2 overexpressing disease more lesions were detected than with conventional staging procedures. The PET tracer (89)Zr-trastuzumab showed excellent, quantifiable, and specific tumor uptake. (111)In-bevacizumab for SPECT and (89)Zr-bevacizumab for PET-imaging have been developed for vascular endothelial growth factor (VEGF) imaging as an angiogenic marker. Lastly, tracers for the receptors EGFR, IGF-1R, PDGF-betaR and the ligand TGFbeta are under development. Although molecular imaging of breast cancer is still not commonly used in daily clinical practice, its application portfolio is expanding rapidly.
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Affiliation(s)
- T H Oude Munnink
- Department of Medical Oncology, University Medical Center, Groningen, The Netherlands
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Kusumanto YH, Meijer C, Dam W, Mulder NH, Hospers GA. Circulating vascular endothelial growth factor (VEGF) levels in advanced stage cancer patients compared to normal controls and diabetes mellitus patients with critical ischemia. Drug Target Insights 2007; 2:105-9. [PMID: 21901067 PMCID: PMC3155238] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Anti-angiogenic therapy is emerging as a valuable tool in the treatment of patients with cancer. As VEGF is a central target in anti-angiogenic therapy, its levels in the circulation might be relevant in selecting tumor types or patients likely to respond to this treatment. Additional VEGF has been recognized as a key factor in the pathogenesis of diabetic retinopathy. Recently anti-angiogenic therapy has been advocated in this situation.We measured VEGF levels in whole blood in 42 patients with high grade (n = 26) and low grade (n = 16) end stage cancer, and in 28 healthy controls and 37 patients with diabetes related vascular disease. Only 2/26 patients in the group of high grade cancer had significantly elevated VEGF levels, 1/16 in the low grade group and 1/28 in the healthy control group. In contrast, in 10/37 diabetic patients the mean VEGF levels were significantly elevated compared to the other groups. The mean level in these diabetic patients was significantly elevated compared to the other groups.These data indicate the limitation of the use of circulating VEGF levels as a potential selection criterion for anti-angiogenic therapy in cancer patients and suggest further studies into its application in the management of diabetic complications.
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Affiliation(s)
| | | | | | | | - Geke A.P. Hospers
- Correspondence: G.A.P. Hospers, M.D., Ph.D., Dept. of Medical Oncology, University Medical Center Groningen, Hanzeplein 1, 9713 GZ Groningen, The Netherlands., Tel: +31 50 361 2821/1847; Fax: +31 50 361 4862;
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Kusumanto YH, Meijer C, Dam W, Mulder NH, Hospers GA. Circulating Vascular Endothelial Growth Factor (VEGF) Levels in Advanced Stage Cancer Patients Compared to Normal Controls and Diabetes Mellitus Patients with Critical Ischemia. Drug Target Insights 2007. [DOI: 10.1177/117739280700200005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Yoka H. Kusumanto
- Dept. of Medical Oncology, University of Groningen and University Medical Center Groningen, Groningen, The Netherlands
| | - Coby Meijer
- Dept. of Medical Oncology, University of Groningen and University Medical Center Groningen, Groningen, The Netherlands
| | - Wendy Dam
- Dept. of Medical Oncology, University of Groningen and University Medical Center Groningen, Groningen, The Netherlands
| | - Nanno H. Mulder
- Dept. of Medical Oncology, University of Groningen and University Medical Center Groningen, Groningen, The Netherlands
| | - Geke A.P. Hospers
- Dept. of Medical Oncology, University of Groningen and University Medical Center Groningen, Groningen, The Netherlands
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25
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Dijkstra G, Hospers GA, Kleibeuker JH. [Gene therapy with interleukin 10 in Crohn's disease: too early yet]. Ned Tijdschr Geneeskd 2003; 147:2153-6. [PMID: 14626830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/27/2023]
Abstract
An improved understanding of the pathogenesis of inflammatory bowel disease (IBD) has led to the development of new drugs such as infliximab and insights into the modes of action of commonly used drugs such as azathioprine and methotrexate. These drugs act, at least in part, by inducing apoptosis of activated T-cells, which are an important phenomenon in the aberrant mucosal immune response in Crohn's disease. Gene therapy directed towards delivering anti-inflammatory proteins such as interleukin 10 (IL-10) to the inflamed mucosa is another new means of correcting the balance between the proinflammatory and anti-inflammatory cytokines in IBD. Gene-therapeutic manipulation of T-cells or bacteria to make them selectively deliver IL-10 to the gut mucosa has been successfully described in experimental models of IBD. Although interleukin-10-based gene therapy for Crohn's disease is an attractive option, safety aspects concerning the gene transfection method and questions about the efficacy of interleukin-10 in Crohn's disease in particular, prevent its application in the near future.
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Affiliation(s)
- G Dijkstra
- Academisch Ziekenhuis, afd. Maag-, Darm- en Leverziekten, Postbus 30.001, 9700 RB Groningen
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26
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Bouïs D, Hospers GA, Meijer C, Molema G, Mulder NH. Endothelium in vitro: a review of human vascular endothelial cell lines for blood vessel-related research. Angiogenesis 2002; 4:91-102. [PMID: 11806248 DOI: 10.1023/a:1012259529167] [Citation(s) in RCA: 268] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Endothelial cells (EC) are currently used as in vitro model systems for various physiological and pathological processes, especially in angiogenesis research. Primary EC have a limited lifespan and display characteristics that differ from batch to batch due to their multidonor origin. In recent years many groups have established EC lines. This Review gives an overview of the advantages and disadvantages of currently available vascular EC lines. Its aim is to help the investigator to decide which cell line matches his or her research goal best. Truly immortalized cell lines are generally better characterized and more stable in their endothelial traits than EC that were given an extended life span. Presently the best characterized macro- and micro-vascular EC lines are EA.hy926 and HMEC-1, respectively.
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Affiliation(s)
- D Bouïs
- Department of Medical Oncology, University Hospital Groningen, P.O. Box 30001, 9700 RB Groningen, The Netherlands
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27
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Withoff S, Glazenburg KL, van Veen ML, Kraak MM, Hospers GA, Störkel S, de Vries EG, Wilschut J, Daemen T. Replication-defective recombinant Semliki Forest virus encoding GM-CSF as a vector system for rapid and facile generation of autologous human tumor cell vaccines. Gene Ther 2001; 8:1515-23. [PMID: 11704811 DOI: 10.1038/sj.gt.3301556] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2001] [Accepted: 07/18/2001] [Indexed: 11/08/2022]
Abstract
This paper describes the production of recombinant Semliki Forest virus encoding murine or human granulocyte-macrophage colony-stimulating factor (GM-CSF) and the capacity of these vectors to transduce murine and human tumor cells ex vivo. High-titer stocks (up to 3 x 10(9) particles/ml) of conditionally infective, replication-defective, recombinant SFV particles were generated using the SFV Helper-2 system. It is shown that the recombinant SFV/GM-CSF virus, as well as recombinant SFV carrying the beta-galactosidase reporter gene, efficiently transduce both murine tumor cell lines as well as primary human renal carcinoma cells. Using ELISA's specific for GM-CSF, levels of GM-CSF production by the cells were determined. Levels of murine GM-CSF (mGM-CSF) produced by SFV/mGM-CSF transduced renal cell cancer cultures were equal to or higher than corresponding levels reported in the literature after transduction of similar renal carcinoma cell cultures using a retroviral vector system. The biological activity of GM-CSF was demonstrated by using cells which are dependent on GM-CSF for growth and by using primary bone marrow cells. All the transduced cell cultures (including the human renal cell carcinoma samples) produced GM-CSF for up to at least 4 days after transduction. The results imply that the recombinant SFV system can be used for rapid and facile preparation of autologous cancer cell vaccines.
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Affiliation(s)
- S Withoff
- Department of Medical Microbiology, Molecular Virology Section, University of Groningen and Academic Hospital, Groningen, The Netherlands
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van Steijn JH, Nieboer P, Hospers GA, de Vries EG, Mulder NH. Delirium after interleukin-2 and alpha-interferon therapy for renal cell carcinoma. Anticancer Res 2001; 21:3699-700. [PMID: 11848546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
A 55-year-old man receiving alpha-interferon and interleukin-2 therapy for renal cell carcinoma presented with seizures and delirium. A CT-scan of the cerebrum did not reveal any disorder. Both alpha-interferon and interleukin-2 were stopped. Treatment with steroids led to complete regression of central nervous system symptomatology. We emphasize the importance of ruling out iatrogenesis in patients treated with alpha-interferon and/or interleukin-2 who display neuropsychiatric symptoms.
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Affiliation(s)
- J H van Steijn
- Department of Medical Oncology, University Hospital Groningen, The Netherlands.
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Nieboer P, Mulder NH, Van Der Graaf WT, Willemse PH, Hospers GA. Dacarbazine DTIC and carboplatin as an outpatient treatment for disseminated malignant melanoma. Anticancer Res 2001; 21:3115-6. [PMID: 11712820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
Occasionally long-term survival in disseminated melanoma can be obtained through chemotherapy. We treated 22 patients with disseminated melanoma with an outpatient regimen consisting of dacarbazine (DTIC) and carboplatin. Three patients had a complete response lasting 4+, 9 and 9 months (survival 4+, 10 and 16 months), respectively; 3 patients had a partial response lasting 4, 6 and 8 months (survival 6+, 11+ and 14 months), respectively. Overall response was 27% (95% confidence interval 11-50%). Toxicity was relatively mild and mainly due to nausea. In 3 patients the dose of carboplatin was reduced because of grade 4 haematological toxicity. This described easy outpatient regimen shows comparable results as other polychemotherapeutic regimens in disseminated melanoma, but with a relatively mild toxicity profile.
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Affiliation(s)
- P Nieboer
- Department of Medical Oncology, University Hospital Groningen, The Netherlands
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Nieboer P, de Vries EG, Mulder NH, Sleijfer DT, Willemse PH, Hospers GA, Gietema JA, Sluiter WJ, van Der Graaf WT. Long-term haematological recovery following high-dose chemotherapy with autologous bone marrow transplantation or peripheral stem cell transplantation in patients with solid tumours. Bone Marrow Transplant 2001; 27:959-66. [PMID: 11436106 DOI: 10.1038/sj.bmt.1703030] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2000] [Accepted: 03/06/2001] [Indexed: 11/09/2022]
Abstract
long-term peripheral blood counts and factors influencing long-term trilineage haematological recovery of consecutive patients in a single institution treated with high-dose chemotherapy (hdc) and abmt or psct for solid tumours were examined. patients with a relapse-free survival of >1 year were included in the analysis (n = 131). Peripheral blood counts were examined 6 months and yearly following transplantation. Median follow-up was 4.1 years (range 1-10+ years). Three years after transplantation 91% of patients had normal white blood counts (WBC), 94% normal haemoglobin (Hb) and 75% normal platelets. Trilineage recovery was complete in 70% (n = 83) at 3 years and 85% (n = 50) at 5 years. Recovery of Hb occurred before WBC and platelet recovery. Approximately 25% of patients displayed an elevated MCV throughout the follow-up period. These long-term results were independent of age, high-dose regimen, number of reinfused stem cells and stem cell source. Double (n = 12) vs single (n = 119) transplantations showed significantly slower trilineage recovery and higher MCV. No secondary graft failure, myelodysplasia or leukaemia was encountered. In conclusion, complete trilineage recovery after HDC followed by ABMT or PSCT occurs slowly. PSCT and ABMT are capable of maintaining long-term haematopoiesis. Slower recovery is seen after double transplantations. The results suggest lasting implications for bone marrow function after autologous transplantation.
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Affiliation(s)
- P Nieboer
- Department of Medical Oncology, University Hospital Groningen, Groningen, The Netherlands
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31
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Calogero A, Hospers GA, Timmer-Bosscha H, Koops HS, Mulder NH. Effect of specific or random c-DNA priming on sensitivity of tyrosinase nested RT-PCR: potential clinical relevance. Anticancer Res 2000; 20:3545-8. [PMID: 11131660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
The reverse transcriptase polymerase chain reaction (RT-PCR) can be of clinical relevance in identifying malignant melanoma cells in blood or tissues of patients at risk for disseminated melanoma. The diagnostic value of this marker however, is still controversial. The objective of this study was to compare and quantify the difference in sensitivity of the nested RT-PCR for tyrosinase, with respect to the method utilized to produce the template c-DNA. We found a difference of a factor 10 in favor of a specific priming versus a random one. We concluded that this difference can be exploited in the analysis of blood samples. However, in the analysis of lymph node specimens, where the chance of positivity due to tyrosinase positive non-melanoma cells is much higher, the choice of a highly sensitive assay should be made with caution.
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Affiliation(s)
- A Calogero
- Department of Medical Oncology, University Hospital Groningen, The Netherlands
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32
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Calogero A, Timmer-Bosscha H, Schraffordt Koops H, Tiebosch AT, Mulder NH, Hospers GA. Limitations of the nested reverse transcriptase polymerase chain reaction on tyrosinase for the detection of malignant melanoma micrometastases in lymph nodes. Br J Cancer 2000; 83:184-7. [PMID: 10901368 PMCID: PMC2363472 DOI: 10.1054/bjoc.2000.1282] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
The specificity and sensitivity of the nested reverse transcriptase polymerase chain reaction (RT-PCR) on tyrosinase was studied, for the detection of micrometastases of malignant melanoma. The specificity was assessed in the blood of six healthy donors, four patients with non-melanoma cancers of which one patient was treated with granulocyte-colony stimulating factor. Lymph nodes of nine patients without malignant melanoma were tested and four cell lines of various other tumours. Six of the nine non-melanoma lymph nodes were positive in this assay. The sensitivity was tested in a spike experiment in vitro, using a melanoma cell line. The detection limit was ten melanoma cells per 10(7) peripheral blood lymphocytes.
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Affiliation(s)
- A Calogero
- Department of Medical Oncology, University Hospital Groningen, The Netherlands
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Calogero A, de Leij LF, Mulder NH, Hospers GA. Recombinant T-cell receptors: an immunologic link to cancer therapy. J Immunother 2000; 23:393-400. [PMID: 10916747 DOI: 10.1097/00002371-200007000-00001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Cytotoxic T cells can specifically kill target cells that express antigens recognized by the T-cell receptor. These are membrane-bound proteins that are not ubiquitous and thus are difficult to purify and study at the protein level. The advent of recombinant DNA technology has facilitated these objectives, thereby enabling researchers to gain valuable information about major T-cell receptor characteristics. Genetic manipulation of T-cell receptors has also been used to exploit specificity of killing by cytotoxic T lymphocytes, which represents an attractive feature for therapeutic purposes. The objective of this review was to provide an overview of the major strategies adopted to genetically manipulate T-cell receptors.
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MESH Headings
- Animals
- Humans
- Immunoglobulin Variable Region/genetics
- Immunotherapy, Adoptive
- Neoplasms/immunology
- Neoplasms/therapy
- Protein Structure, Tertiary/genetics
- Receptor-CD3 Complex, Antigen, T-Cell/chemistry
- Receptor-CD3 Complex, Antigen, T-Cell/immunology
- Receptors, Antigen, T-Cell, alpha-beta/chemistry
- Receptors, Antigen, T-Cell, alpha-beta/genetics
- Receptors, Antigen, T-Cell, alpha-beta/immunology
- Recombinant Proteins/immunology
- T-Lymphocytes, Cytotoxic/immunology
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Affiliation(s)
- A Calogero
- Division of Medical Oncology, University Hospital Groningen, The Netherlands
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Calogero A, Hospers GA, Krüse KM, Schrier PI, Mulder NH, Hooijberg E, de Leij LF. Retargeting of a T cell line by anti MAGE-3/HLA-A2 alpha beta TCR gene transfer. Anticancer Res 2000; 20:1793-9. [PMID: 10928109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
BACKGROUND The T cell receptor (TCR) is an heterodimeric protein on the cell membrane of cytotoxic T cells (CTLs). In CTLs TCRs mediate the recognition of target cells through interaction with specific, MHC class I presented peptides. MATERIALS AND METHODS As a model system to show proof of principle we chose the Jurkat/MA cell line and the HLA-A2.1 binding MAGE-3 derived peptide 271-279, as target specificity. RESULTS We show that this cell line can be successfully transduced with the dicistronic retroviral vector (LZRS) containing cDNAs encoding for the complete alpha and beta chains of the selected TCR. Following retroviral transduction, Jurkat/MA cells do express the anti-MAGE-3 TCR on their membrane. The transduced TCR is functional as travoductants are successfully triggered, upon stimulation with T2 cells or MAGE-3+ melanoma cells loaded with the MAGE-3 peptide. CONCLUSION We conclude that TCR gene transfer is possible and it represents a powerful therapeutic tool for the genetical modification of T calls of patients sullering from cancer.
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Affiliation(s)
- A Calogero
- Department of Medical Oncology, University Hospital Groningen, The Netherlands
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Hospers GA, Calogero A, van Waarde A, Doze P, Vaalburg W, Mulder NH, de Vries EF. Monitoring of herpes simplex virus thymidine kinase enzyme activity using positron emission tomography. Cancer Res 2000; 60:1488-91. [PMID: 10749109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
9-[(1-[18F]Fluoro-3-hydroxy-2-propoxy)methyl]guanine ([18F]FHPG) was evaluated as a tracer for noninvasive positron emission tomography (PET) imaging of herpes simplex virus type 1 thymidine kinase (HSV-tk) gene expression. C6 rat glioma cells with and without the HSV-tk gene were incubated with [18F]FHPG for 2 h. The in vitro tracer uptake in HSV-tk-containing C6tk cells was 35 +/- 5 times higher than that in control cells. In nude rats carrying both a C6 and a C6tk tumor, the average ratio of tracer accumulation between the tumors was 15 +/- 5 at 2 h postinjection. The tracer is rapidly cleared from nontarget tissue into the urine because only the HSV-tk-expressing tumor, kidneys, and bladder remained visible on the late PET images. HPLC analysis revealed that three metabolites, tentatively assigned as FHPG mono-, di-, and triphosphate, were formed in the C6tk tumors only. In conclusion, we have demonstrated that [18F]FHPG is a promising tracer for monitoring HSV-tk enzyme activity in vivo with PET.
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Affiliation(s)
- G A Hospers
- Department of Medical Oncology, Groningen University Hospital, The Netherlands.
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de Vries EF, van Waarde A, Harmsen MC, Mulder NH, Vaalburg W, Hospers GA. [(11)C]FMAU and [(18)F]FHPG as PET tracers for herpes simplex virus thymidine kinase enzyme activity and human cytomegalovirus infections. Nucl Med Biol 2000; 27:113-9. [PMID: 10773539 DOI: 10.1016/s0969-8051(99)00105-5] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
[(11)C]-2'-Fluoro-5-methyl-1-beta-D-arabinofuranosyluracil ([(11)C]FMAU) and [(18)F]-9-[(3-fluoro-1-hydroxy-2-propoxy)methyl]guanine ([(18)F]FHPG), radiolabeled representatives of two classes of antiviral agents, were evaluated as tracers for measuring herpes simplex virus thymidine kinase (HSV-tk) enzyme activity after gene transfer and as tracers for localization of active human cytomegalovirus (HCMV) infections. In vitro accumulation experiments revealed that both [(11)C]FMAU and [(18)F]FHPG accumulated significantly more in HSV-tk expressing cells than they did in control cells. [(18)F]FHPG uptake in HSV-tk expressing cells, however, was found to depend strongly on the cell line used, which might be due to cell type dependent membrane transport or cell type dependent substrate specific susceptibility of the enzyme. In vitro, both tracers exhibited a good selectivity for accumulation in HCMV-infected human umbilical vein endothelial cells over uninfected cells. In contrast to [(18)F]FHPG, [(11)C]FMAU uptake in control cells was relatively high due to phosphorylation of the tracer by host kinases. Therefore, [(18)F]FHPG appears to be the more selective tracer not only to predict HSV-tk gene therapy outcome, but also to localize active HCMV infections with PET.
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Affiliation(s)
- E F de Vries
- PET Center, Groningen University Hospital, Groningen, The Netherlands.
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37
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Hendrikse NH, de Vries EG, Eriks-Fluks L, van der Graaf WT, Hospers GA, Willemsen AT, Vaalburg W, Franssen EJ. A new in vivo method to study P-glycoprotein transport in tumors and the blood-brain barrier. Cancer Res 1999; 59:2411-6. [PMID: 10344751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Abstract
Drug resistance is a major cause of chemotherapy failure in cancer treatment. One reason is the overexpression of the drug efflux pump P-glycoprotein (P-gp), involved in multidrug resistance (MDR). In vivo pharmacokinetic analysis of P-gp transport might identify the capacity of modulation by P-gp substrate modulators, such as cyclosporin A. Therefore, P-gp function was measured in vivo with positron emission tomography (PET) and [11C]verapamil as radiolabeled P-gp substrate. Studies were performed in rats bearing tumors bilaterally, a P-gp-negative small cell lung carcinoma (GLC4) and its P-gp-overexpressing subline (GLC4/P-gp). For validation, in vitro and biodistribution studies with [11C]daunorubicin and [11C]verapamil were performed. [11C]Daunorubicin and [11C]verapamil accumulation were higher in GLC4 than in GLC4/P-gp cells. These levels were increased after modulation with cyclosporin A in GLC4/P-gp. Biodistribution studies showed 159% and 185% higher levels of [11C]daunorubicin and [11C]verapamil, respectively, in GLC4 than in GLC4/P-gp tumors. After cyclosporin A, [11C]daunorubicin and [11C]verapamil content in the GLC4/P-gp tumor was raised to the level of GLC4 tumors. PET measurements demonstrated a lower [11C]verapamil content in GLC4/P-gp tumors compared with GLC4 tumors. Pretreatment with cyclosporin A increased [11C]verapamil levels in GLC4/P-gp tumors (184%) and in brains (1280%). This pharmacokinetic effect was clearly visualized with PET. These results show the feasibility of in vivo P-gp function measurement under basal conditions and after modulation in solid tumors and in the brain. Therefore, PET and radiolabeled P-gp substrates may be useful as a clinical tool to select patients who might benefit from the addition of a P-gp modulator to MDR drugs.
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MESH Headings
- ATP Binding Cassette Transporter, Subfamily B, Member 1/metabolism
- Animals
- Antibiotics, Antineoplastic/pharmacokinetics
- Blood-Brain Barrier
- Brain Chemistry
- Calcium Channel Blockers/pharmacokinetics
- Carcinoma, Small Cell/chemistry
- Carcinoma, Small Cell/drug therapy
- Carcinoma, Small Cell/metabolism
- Carcinoma, Small Cell/pathology
- Cyclosporine/pharmacology
- Daunorubicin/pharmacokinetics
- Drug Resistance, Multiple
- Drug Resistance, Neoplasm
- Humans
- Lung Neoplasms/drug therapy
- Lung Neoplasms/metabolism
- Lung Neoplasms/pathology
- Male
- Metabolic Clearance Rate
- Neoplasm Proteins/metabolism
- Neoplasm Transplantation
- Neoplasms/metabolism
- Rats
- Rats, Nude
- Recombinant Fusion Proteins/metabolism
- Tissue Distribution
- Tumor Cells, Cultured
- Verapamil/pharmacokinetics
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Affiliation(s)
- N H Hendrikse
- Positron Emission Tomography Center, Department of Medical Oncology, Groningen University Hospital, The Netherlands
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Schröder CP, de Vries EG, Mulder NH, Willemse PH, Sleijfer DT, Hospers GA, van der Graaf WT. Prevention of febrile leucopenia after chemotherapy in high-risk breast cancer patients: no significant difference between granulocyte-colony stimulating growth factor or ciprofloxacin plus amphotericin B. J Antimicrob Chemother 1999; 43:741-3. [PMID: 10382902 DOI: 10.1093/jac/43.5.741] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
In a prospective randomized trial, 40 stage IV breast cancer patients undergoing intermediate high-dose chemotherapy (cyclophosphamide, 5-fluorouracil plus epirubicin or methotrexate), received either recombinant human G-CSF (rhG-CSF, group I) or ciprofloxacin and amphotericin B (CAB, group II) for prevention of febrile leucopenia (FL). In group I, seven of 18 patients developed FL (after 10/108 courses); in group II, seven of 22 patients (7/98 courses) (P = NS). Median hospitalization duration and costs were not different. RhG-CSF was 6.6 times more expensive per course than CAB. In conclusion, prophylactic CAB has similar efficacy to rhG-CSF in this setting, and is more cost-effective.
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Affiliation(s)
- C P Schröder
- Department of Medical Oncology, University Hospital Groningen, The Netherlands
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39
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Hospers GA, Eisenhauer EA, de Vries EG. The sulfhydryl containing compounds WR-2721 and glutathione as radio- and chemoprotective agents. A review, indications for use and prospects. Br J Cancer 1999; 80:629-38. [PMID: 10360638 PMCID: PMC2362304 DOI: 10.1038/sj.bjc.6690404] [Citation(s) in RCA: 79] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Radio- and chemotherapy for the treatment of malignancies are often associated with significant toxicity. One approach to reduce the toxicity is the concomitant treatment with chemoprotective agents. This article reviews two sulfhydryl compounds, namely the agent WR-2721 (amifostine), a compound recently registered for use in human in many countries, and the natural occurring compound glutathione (GSH). GSH is not registered as a chemoprotective agent. WR-2721 is an aminothiol prodrug and has to be converted to the active compound WR-1065 by membrane-bound alkaline phosphatase. WR-1065 and GSH both act as naturally occurring thiols. No protective effect on the tumour has been found when these compounds are administered intravenously. There is even in vitro evidence for an increased anti-tumour effect with mafosfamide after pretreatment with WR-2721, and in vivo after treatment with carboplatin and paclitaxel. Randomized clinical studies have shown that WR-2721 and GSH decrease cisplatin-induced nephrotoxicity and that WR-2721 reduces radiation radiotherapy-induced toxicity. Side-effects associated with WR-2721 are nausea, vomiting and hypotension, GSH has no side-effects. An exact role of WR-2721 and GSH as chemoprotectors is not yet completely clear. Future studies should examine the protective effect of these drugs on mucositis, cardiac toxicity, neuro- and ototoxicity, the development of secondary neoplasms and their effect on quality of life.
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Affiliation(s)
- G A Hospers
- Department of Internal Medicine, University Hospital Groningen, The Netherlands
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40
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Abstract
Specific inhibition of mammalian genes is possible through the use of antisense oligonucleotides (AS ODNs) or ribozymes. These strategies have led to a better understanding of several cellular and molecular mechanisms, among which cancer development. Recently, these strategies have been applied also for therapeutical purposes in diseases such as AIDS and cancer. In some of these therapeutical trials the antisense strategy is combined with gene transfer technology: the AS ODN or the ribozyme are expressed within the cell by the use of adenoviral or retroviral vectors. However, many difficulties have still to be overcome before ODNs and ribozymes can be used routinely in the clinic.
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Affiliation(s)
- A Calogero
- Department of Internal Medicine, University Hospital, Groningen, The Netherlands
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41
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Mulder NH, Dolsma WV, Mulder PO, De Vries EG, Willemse PH, Sleijfer DT, Hospers GA, Van der Graaf WT. Long-term results of induction- and intensification chemotherapy supported with autologous bone marrow reinfusion in patients with disseminated or T4 breast cancer. Anticancer Res 1995; 15:1565-8. [PMID: 7654046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Twenty-nine patients with metastatic or T4 breast cancer who were in pathologically proven complete remission after induction chemotherapy, received intensification chemotherapy with autologous bone marrow support. Twelve patients had T4 breast cancer, 17 had metastatic disease. The median age was 42 years (27-52). Intensification consisted of cyclophosphamide 7 g/m2 i.v. and etoposide 1.5 g/m2 i.v. in 24 patients, or thiotepa 800 mg/m2 i.v. and mitoxantrone 50-75 mg/m2 i.v. in 5 patients. The median observation is 7 years. Median survival is 36 months. Ten year relapse-free survival is 20%. For patients with metastatic disease median survival is 34 months, time to relapse 18 months; two patients (12%) have survived disease-free for more than 6 years. The patients with T4 cancer have a median survival of 80 months and a median time to relapse of 53 months; four patients (33%) have survived more than 5 years disease-free.
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Affiliation(s)
- N H Mulder
- Department of Medical oncology, University Hospital Groningen, The Netherlands
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42
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Hospers GA, Mulder NH. [The use of genes in the treatment of cancer]. Ned Tijdschr Geneeskd 1995; 139:1316-9. [PMID: 7617047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- G A Hospers
- Academisch Ziekenhuis, afd. Interne Oncologie, Groningen
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43
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Hospers GA, de Wolf JT, Hazenberg BP, Vellenga E. [Hematopoietic growth factors as supportive treatment in drug-induced agranulocytosis]. Ned Tijdschr Geneeskd 1993; 137:2152-4. [PMID: 7694163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
This article describes the use of granulocyte macrophage colony stimulating factor and granulocyte colony stimulating factor in two patients with drug induced granulocytopenia. A granulocyte count > 1 x 10(9)/l was obtained after 7 days' treatment. These results suggest that the haematopoietic growth factors shortened the period of agranulocytosis and subsequently may improve the survival of these patients.
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Affiliation(s)
- G A Hospers
- Afd. Hematologie, Academisch Ziekenhuis, Groningen
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44
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Ligtenberg JJ, Hospers GA, Sprenger HG, Weits J. [Hemorrhagic fever caused by dengue in 2 tourists]. Ned Tijdschr Geneeskd 1991; 135:2394-7. [PMID: 1749446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Dengue haemorrhagic fever in two female tourists to Thailand (1990) and Indonesia (1989) respectively, is reported for the first time in the Netherlands. The main symptoms directly after return were high fever, haemorrhagic exanthema, thrombocytopenia and in one patient signs of haemoconcentration. Initially both patients were treated with antibiotics. They recovered after intravenous fluid therapy; one of them received a thrombocyte transfusion. Increasing travel to Asia and South America will result in more tourists returning with this potentially serious arboviral disease (dengue haemorrhagic shock).
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Affiliation(s)
- J J Ligtenberg
- Academisch Ziekenhuis, afd. Algemene Interne Geneeskunde, sectie Infectieziekten, Groningen
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45
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Hospers GA, Meijer C, de Leij L, Uges DR, Mulder NH, de Vries EG. A study of human small-cell lung carcinoma (hSCLC) cell lines with different sensitivities to detect relevant mechanisms of cisplatin (CDDP) resistance. Int J Cancer 1990; 46:138-44. [PMID: 2163989 DOI: 10.1002/ijc.2910460125] [Citation(s) in RCA: 30] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The cisplatin(CDDP)-resistant cell line GLC4-CDDP shows a variety of differences from the parent line GLC4. The aim of this study was to determine which of the observed changes correlated with the degree of resistance and was therefore relevant to the phenomenon of CDDP resistance. For these experiments we used cells of the sensitive hSCLC cell line GLC4 and the in vitro-acquired CDDP-resistant sublines GLC4-CDDP3 and GLC4-CDDP11, with a resistance factor (RF) of 3 and 11 respectively for CDDP and of 1.8 and 7.4 respectively for carboplatin. Carboplatin was used, in addition to CDDP in seeking relevant mechanisms. No consistency was found between the RF and the growth pattern or antigen expression, cellular volume, doubling time, cellular or nuclear platinum (Pt) content or the level of Pt-non-histone chromatin protein (NHCP) binding. A correlation was found between the RF and the level of glutathione (GSH), and a trend was found for the level of Pt-DNA binding, Pt-GG adduct content and the amount of interstrand cross-links (ISC). These changes might therefore be relevant for the development of resistance. These findings are compatible with a GSH-induced reduction of the amount of reactive Pt in the resistant cell, resulting in a lower net platination and toxic Pt-DNA adduct formation.
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MESH Headings
- Antibodies, Monoclonal
- Antigens, CD/immunology
- Antigens, Neoplasm/immunology
- Antineoplastic Agents/antagonists & inhibitors
- Carboplatin
- Carcinoma, Small Cell/analysis
- Carcinoma, Small Cell/drug therapy
- Carcinoma, Small Cell/immunology
- Carcinoma, Small Cell/pathology
- Cell Line
- Cisplatin/antagonists & inhibitors
- Coloring Agents
- Drug Resistance
- Drug Screening Assays, Antitumor
- Glutathione/analysis
- Humans
- Lung Neoplasms/analysis
- Lung Neoplasms/drug therapy
- Lung Neoplasms/immunology
- Lung Neoplasms/pathology
- Organoplatinum Compounds/antagonists & inhibitors
- Platinum/analysis
- Tetrazolium Salts
- Thiazoles
- Tumor Cells, Cultured/analysis
- Tumor Cells, Cultured/drug effects
- Tumor Cells, Cultured/immunology
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Affiliation(s)
- G A Hospers
- Division of Medical Oncology, University Hospital, Groningen, The Netherlands
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46
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Abstract
The role of glutathione (GSH) in resistance to cisplatin (CDDP) was studied in a human small cell lung carcinoma cell line (GLC4) and a CDDP-resistant subline (GLC4-CDDP). In addition to studying the steady state of GSH, the kinetics of this defence system were also studied via the monitoring of the GSH status of the cells under continuous pressure of CDDP. GLC4-CDDP maintained its elevated GSH level whereas GLC4 (under pressure of CDDP) quickly synthesised GSH to about twice its initial level, corresponding with 80% of the GSH level of GLC4-CDDP. D,L-buthionine-S,R-sulphoximine (BSO) was used to analyse the role of GSH in resistance to CDDP. Pretreatment with BSO (48 h, 50 microM, GSH not detectable) increased the CDDP-induced cytotoxicity 2.8-fold in GLC4-CDDP and 1.7-fold in GLC4. In GLC4 no changes in the amount of platinum (Pt) bound to DNA could be observed after GSH depletion. Changes in formation of interstrand cross-links or the main Pt-containing intrastrand cross-link in digested DNA, the Pt-GG adduct, were also not observed. In GSH depleted GLC4-CDDP cells, an increase in the amount of Pt bound to DNA and in the Pt-GG adduct was observed. Pretreatment with BSO substantially reduced the repair of Pt bound to DNA in both cell lines. We conclude that an increased GSH level and GSH synthesis capacity were demonstrated in CDDP resistant cells. The observations after BSO treatment suggest two roles for GSH in CDDP resistance, namely that of a cytosolic elimination resulting in less DNA platination and a nuclear effect on the formation and repair of DNA platinum adducts.
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Affiliation(s)
- C Meijer
- Department of Internal Medicine, University Hospital Groningen, The Netherlands
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47
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Hospers GA, de Vries EG, Mulder NH. The formation and removal of cisplatin (CDDP) induced DNA adducts in a CDDP sensitive and resistant human small cell lung carcinoma (HSCLC) cell line. Br J Cancer 1990; 61:79-82. [PMID: 2153398 PMCID: PMC1971318 DOI: 10.1038/bjc.1990.18] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
In DNA digested samples of CDDP sensitive (GLC4) and an 11-fold resistant (GLC4-CDDP) hSCLC line, the CDDP induced DNA adducts Pt-GG (Pt-(NH3)2d (pGpG], Pt-AG (Pt-(NH3)2d (pApG], G-Pt-G (Pt-(NH3)2d (GMP)2) and Pt-GMP (Pt-(NH3)3d GMP), were measured with polyclonal antibodies. The total amount of platinum (Pt) bound to DNA was also measured but with the help of atomic absorption spectroscopy (AAS). An increased net formation in GLC4 compared with GLC4-CDDP is found for the total Pt bound to DNA, Pt-GG and Pt-AG adducts after a 2 h 100 microM CDDP treatment. No significant difference is detected in the net formation of the Pt-GMP and G-Pt-G adducts. A slow Pt-AG adduct formation, with a maximum reached 10 h after CDDP composition, is found for both cell lines. In the 22 h period after the 2 h 100 microM CDDP treatment, a significant removal in GLC4 is measured for the Pt-GG, Pt-AG and the Pt-GMP adducts. For GLC4-CDDP a significant removal is detected in the total Pt bound to DNA, the Pt-AG and the Pt-GMP adducts. The removal of the total Pt bound to DNA in GLC4-CDDP cannot be explained by an adduct measured with the immunochemical method. In conclusion, no evidence is found that CDDP resistance is based upon the repair of the Pt-GG, Pt-AG, G-Pt-G and Pt-GMP adducts.
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Affiliation(s)
- G A Hospers
- Department of Internal Medicine, University Hospital, Groningen, The Netherlands
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48
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Timmer-Bosscha H, Hospers GA, Meijer C, Mulder NH, Muskiet FA, Martini IA, Uges DR, de Vries EG. Influence of docosahexaenoic acid on cisplatin resistance in a human small cell lung carcinoma cell line. J Natl Cancer Inst 1989; 81:1069-75. [PMID: 2544740 DOI: 10.1093/jnci/81.14.1069] [Citation(s) in RCA: 53] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
In a sensitive, human, small cell lung carcinoma cell line (GLC4) and a cisplatin (CP)-resistant subline (GLC4-CP), the effect of co-culturing with docosahexaenoic acid (DCHA) on CP cytotoxicity was studied. Cells were cultured for 4 days, with 32 microM of DCHA added on days 1 and 3. Incorporation of DCHA into the cellular phospholipids was demonstrated by fatty acid analysis. Supplementation with DCHA led to almost a threefold decrease of resistance in GLC4-CP and had no influence on CP cytotoxicity in GLC4. After culturing with DCHA, cellular platinum (Pt); total Pt bound to DNA; and Pt-GG, Pt-AG, G-Pt-G, and Pt-GMP adduct contents increased in both lines, whereas interstrand cross-link formation was elevated only in GLC4-CP. These experiments demonstrate that DCHA reduces CP resistance. Although an effect on cellular membranes resulting in an increased CP uptake apparently was present, this mechanism does not seem to be responsible for resistance modulation. Rather, an effect on nuclear, probably DNA-related, structures is likely and leads to an increased formation of interstrand cross-links in GLC4-CP.
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Affiliation(s)
- H Timmer-Bosscha
- Department of Internal Medicine, University Hospital, Groningen, The Netherlands
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49
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Hospers GA, Mulder NH, de Jong B, de Ley L, Uges DR, Fichtinger-Schepman AM, Scheper RJ, de Vries EG. Characterization of a human small cell lung carcinoma cell line with acquired resistance to cis-diamminedichloroplatinum(II) in vitro. Cancer Res 1988; 48:6803-7. [PMID: 2846161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A 6.4-fold cis-diamminedichloroplatinum(II) (CDDP) resistant human small cell lung carcinoma cell line (GLC4-CDDP) was developed to study acquired CDDP resistance in vitro. Compared to the sensitive cell line (GLC4), the GLC4-CDDP showed an increase in doubling time and a decrease in cloning efficiency, cellular size, double minutes per cell, cellular protein, and nuclear protein content. While a complete cross-resistance for tetraplatin and a partial cross-resistance for doxorubicin, melphalan, cadmium chloride, carboplatin, and cis-dichloro-trans-dihydroxo-cis-bis(isoprolylamine)platinum (IV) (resistance factor, respectively,4.0,5.8,2.1,1.5,2.9) was found, no cross-resistance for vincristine was found. In the GLC4-CDDP line in comparison to the GLC4 line, glutathione and total amount of sulfhydryl compounds was significantly increased, while glutathione S-transferase and glutathione reductase was the same. The platinum content in cells and nuclei was lower in the resistant line, but after correction for cellular protein or volume no difference was found. The amount of platinum bound to DNA was significantly lower in the GLC4-CDDP line. After a 1-h incubation with CDDP, the amount of Pt-GG adducts was the same and the amount of interstrand cross-links was reduced in the GLC4-CDDP line as compared to GLC4. In conclusion, in the GLC4-CDDP line the phenotype and genotype are changed and various mechanisms, such as decreased Pt-DNA binding, elevated glutathione, and reduced interstrand cross-links, play a role in the development of the CDDP resistance.
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Affiliation(s)
- G A Hospers
- Department of Internal Medicine, University Hospital, Groningen, The Netherlands
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50
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Abstract
Treatment of cancer patients often fails because of the resistance in the tumor to chemotherapeutic drugs. A better understanding of mechanisms which are active in resistant cells might lead to measures to circumvent the resistance. This review deals with the mechanisms of action of cisplatin (CDDP) and the various causes for CDDP resistance in the tumor cells. Also, possibilities to circumvent CDDP resistance in vitro and in vivo are presented.
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Affiliation(s)
- G A Hospers
- Department of Internal Medicine, University Hospital, Groningen, The Netherlands
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