Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 31
Filtrar
1.
Oncol Res Treat ; 46(6): 259-267, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37166325

RESUMO

BACKGROUND: Pancreatic ductal adenocarcinoma (PDAC) is an aggressive malignancy that is increasingly common. Screening for pancreatic cancer is not well established but might increase the chance of detection in early stages. SUMMARY: We conducted a literature search to summarize current recommendations and to give an overview of patient groups that may benefit from screening. In the general population, screening is not recommended because the low prevalence of PDAC renders any diagnostic tests non-predictive and because there is no direct evidence that links early diagnosis to improved survival. To date, novel approaches like liquid biopsies and molecular markers are not yet able to improve screening in unselected individuals but offer promising potential. Screening efficiency increases considerably with increasing pretest probability. Therefore, the best way to improve early diagnosis is identifying high-risk individuals. KEY MESSAGES: There are well-defined populations with distinct genetic alterations with an increased risk for pancreatic cancer. Those may be screened with common diagnostic methods. In addition, new-onset diabetes is increasingly recognized as an early symptom, especially in elderly patients with weight loss.


Assuntos
Carcinoma Ductal Pancreático , Neoplasias Pancreáticas , Humanos , Idoso , Detecção Precoce de Câncer/métodos , Neoplasias Pancreáticas/genética , Carcinoma Ductal Pancreático/genética , Biomarcadores Tumorais/genética , Neoplasias Pancreáticas
2.
Clin Colorectal Cancer ; 21(3): 188-197, 2022 09.
Artigo em Inglês | MEDLINE | ID: mdl-35637095

RESUMO

Recently, we have witnessed impressive diagnostic and therapeutic changes for gastrointestinal cancer patients. New challenges brought by the COVID-19 pandemic have led us to re-evaluate our work priorities. Thanks to the commendable resilience of both investigators and patients, however, clinical research never stopped. In addition to conducting cutting-edge research and serving patients' needs, as EORTC Gastrointestinal Tract Cancer Group, we are committed to pursuing educational initiatives beneficial to the entire European oncology community and beyond. In this regard, we have been providing critical discussions of new data from major international meetings. In this article, we discuss results of important selected studies presented at the 2022 ASCO Gastrointestinal Cancer Symposium, putting them in perspectives and highlighting potential implications for routine practice. With the number of in-person attendees and practice-changing/informing trials presented, this meeting represented a milestone in the return to normality as well as in the fight against cancer.


Assuntos
COVID-19 , Neoplasias Gastrointestinais , Neoplasias Gastrointestinais/diagnóstico , Neoplasias Gastrointestinais/genética , Neoplasias Gastrointestinais/terapia , Humanos , Oncologia , Pandemias
4.
J Cancer Res Clin Oncol ; 147(12): 3769-3771, 2021 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-34373943

RESUMO

PURPOSE: We report a novel side effect of Crizotinib, an oral ALK inhibitor used in the treatment of non-small cell lung cancer (NSCLC) with activating rearrangement of EML4-ALK. It expands the known spectrum of complications of Crizotinib. METHODS: Clinical case report. RESULTS: Multiple aseptic and recurrent abscesses were observed in the liver, thoracic wall as well as in both kidneys in a 75-year-old female patient suffering from NSCLC who had been treated with Crizotinib for almost 2 years. After discontinuation of the treatment the abscesses dissolved spontaneously and did not reoccur. CONCLUSION: Aseptic abscesses under treatment with Crizotinib are not restricted to the kidneys as described before, but can also occur in other abdominal organs as the liver and even in the thoracic wall. We postulate that this finding may point to a yet unknown not tissue-dependent mechanism of action.


Assuntos
Abscesso/induzido quimicamente , Antineoplásicos/efeitos adversos , Carcinoma Pulmonar de Células não Pequenas/tratamento farmacológico , Crizotinibe/efeitos adversos , Neoplasias Pulmonares/tratamento farmacológico , Idoso , Carcinoma Pulmonar de Células não Pequenas/genética , Feminino , Humanos , Neoplasias Pulmonares/genética , Proteínas de Fusão Oncogênica/genética , Inibidores de Proteínas Quinases/efeitos adversos
5.
Br J Cancer ; 125(7): 911-919, 2021 09.
Artigo em Inglês | MEDLINE | ID: mdl-34426663

RESUMO

Last year the field of immunotherapy was finally introduced to GI oncology, with several changes in clinical practice such as advanced hepatocellular carcinoma or metastatic colorectal MSI-H. At the virtual ASCO-GI symposium 2021, several large trial results have been reported, some leading to a change of practice. Furthermore, during ASCO-GI 2021, results from early phase trials have been presented, some with potential important implications for future treatments. We provide here an overview of these important results and their integration into routine clinical practice.


Assuntos
Neoplasias Gastrointestinais/tratamento farmacológico , Imunoterapia/métodos , Ensaios Clínicos como Assunto , Congressos como Assunto , Neoplasias Gastrointestinais/metabolismo , Humanos , Terapia de Alvo Molecular , Análise de Sobrevida , Resultado do Tratamento
6.
J Clin Oncol ; 39(1): 17-29, 2021 01 01.
Artigo em Inglês | MEDLINE | ID: mdl-33001764

RESUMO

PURPOSE: The PETACC 6 trial investigates whether the addition of oxaliplatin to preoperative capecitabine-based chemoradiation and postoperative capecitabine improves disease-free survival (DFS) in locally advanced rectal cancer. METHODS: Between November 2008 and September 2011, patients with rectal adenocarcinoma within 12 cm from the anal verge, T3/4 and/or node positive, were randomly assigned to 5 weeks preoperative capecitabine-based chemoradiation (45-50.4 Gy) followed by six cycles of adjuvant capecitabine, both without (control arm, 1) or with (experimental arm, 2) oxaliplatin. The primary end point was improvement of 3-year DFS by oxaliplatin from 65% to 72% (hazard ratio [HR], 0.763). RESULTS: A total of 1,094 patients were randomly assigned (intention to treat), and 1,068 eligible patients started their allocated treatment (arm 1, 543; arm 2, 525), with completion of protocol treatment in 68% (arm 1) v 54% (arm 2). A higher rate of grade 3/4 adverse events was reported in the experimental arm (14.4% v 37.3% and 23.4% v 46.6% for neoadjuvant and adjuvant treatment, respectively). At a median follow-up of 68 months (interquartile range, 58-74 months), 157 and 156 DFS events were observed in arms 1 and 2, respectively (adjusted HR, 1.02; 95% CI, 0.82 to 1.28; P = .835). Three-year DFS rate was not different, with 76.5% (95% CI, 72.7% to 79.9%) in arm 1, which is higher than anticipated, and 75.8% (95% CI, 71.9% to 79.3%) in arm 2. The 7-year DFS and overall survival (OS) rates were not different as well, with DFS of 66.1% v 65.5% (HR, 1.02) and OS of 73.5% v 73.7% (HR, 1.19) in arms 1 and 2, respectively. Subgroup analyses revealed heterogeneity in treatment effect according to German versus non-German site location, without detectable confounding factors in multivariable analysis. CONCLUSION: The addition of oxaliplatin to preoperative capecitabine-based chemoradiation and postoperative adjuvant chemotherapy impairs tolerability and feasibility and does not improve efficacy.


Assuntos
Adenocarcinoma/terapia , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Capecitabina/administração & dosagem , Quimiorradioterapia , Oxaliplatina/administração & dosagem , Neoplasias Retais/terapia , Adenocarcinoma/mortalidade , Adenocarcinoma/patologia , Adenocarcinoma/cirurgia , Adulto , Idoso , Idoso de 80 Anos ou mais , Quimioterapia Adjuvante , Feminino , Humanos , Metástase Linfática , Masculino , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Período Pós-Operatório , Período Pré-Operatório , Neoplasias Retais/mortalidade , Neoplasias Retais/patologia , Neoplasias Retais/cirurgia , Taxa de Sobrevida
8.
BMC Cancer ; 19(1): 675, 2019 Jul 09.
Artigo em Inglês | MEDLINE | ID: mdl-31288786

RESUMO

BACKGROUND: Several new treatment options have become available for pancreatic ductal adenocarcinoma (PDAC), but the support for their use for resectable, borderline resectable and locally advanced PDAC is unclear. METHODS: A survey was distributed to the members of the European-African Hepato-Pancreato Biliary Association (E-AHPBA) and the pancreas group of the European Organization for Research and Treatment of Cancer (EORTC) regarding 1) definitions of local resectability, 2) indications for neoadjuvant therapy and 3) case-vignettes regarding the resectability and treatment of PDAC. RESULTS: In total, 114 participants from 37 countries were registered. About 35% of respondents, each, were of the opinion that borderline resectability is defined by any venous tumor contact and venous involvement < 180° or > 180°, respectively. The majority (75.4%) of participants believed that borderline resectable PDAC has a high risk for R1 resection and that neoadjuvant therapy might increase the R0-resection rate (79.8%) and improve oncological patient selection (84.2%). Chemotherapy was regarded useful to convert locally advanced to resectable PDAC by 55.7% of respondents. In the cases with resectable, borderline resectable, and locally advanced PDAC, 10 (8.8%), 78 (68.4%), 55 (48.2%) of participants would start with chemotherapy, respectively. CONCLUSIONS: Although definitions for borderline resectability differ among European surgeons, there seems to be a rather strong support for preoperative chemotherapy in PDAC aiming at minimizing R1 resections while increasing resection rates.


Assuntos
Carcinoma Ductal Pancreático/cirurgia , Carcinoma Ductal Pancreático/terapia , Consenso , Terapia Neoadjuvante , Pancreatectomia , Neoplasias Pancreáticas/cirurgia , Neoplasias Pancreáticas/terapia , Quimiorradioterapia Adjuvante , Humanos , Cuidados Paliativos , Radio-Oncologistas , Cirurgiões , Inquéritos e Questionários , Terminologia como Assunto
9.
Eur J Cancer ; 112: 1-8, 2019 05.
Artigo em Inglês | MEDLINE | ID: mdl-30878666

RESUMO

Multimodal primary treatment of localised adenocarcinoma of the stomach, the oesophagus and the oesophagogastric junction (AEG) was reviewed by a multidisciplinary expert panel in a moderated consensus session. Here, we report the key points of the discussion and the resulting recommendations. The exact definition of the tumour location and extent by white light endoscopy in conjunction with computed tomography scans is the backbone for any treatment decision. Their value is limited with respect to the infiltration depth, lymph node involvement and peritoneal involvement. Additional endoscopic ultrasound was recommended mainly for tumours of the lower oesophagogastric junction (i.e. AEG type II and III according to Siewert) and in early cancers before endoscopic resection. Laparoscopy to diagnose peritoneal involvement was thought to be necessary before the start of neoadjuvant treatment in all gastric cancers and in AEG type II and III. In general, perioperative multimodal treatment was suggested for all locally advanced oesophageal tumours and for gastric cancers with a clinical stage above T1N0. There was consensus that the combination of fluorouracil, folinic acid, oxaliplatin and docetaxel is now a new standard chemotherapy (CTx) regimen for fit patients. In contrast, the optimal choice of perioperative CTx versus neoadjuvant radiochemotherapy (neoRCTx), especially for AEG, was identified as an open question. Expert treatment recommendations depend on the tumour location, biology, the risk of incomplete (R1) resection, response to treatment, local or systemic recurrence risks, the predicted perioperative morbidity and patients' comorbidities. In summary, any treatment decision requires an interdisciplinary discussion in a comprehensive multidisciplinary setting.


Assuntos
Adenocarcinoma/terapia , Neoplasias Esofágicas/terapia , Junção Esofagogástrica/efeitos dos fármacos , Neoplasias Gástricas/terapia , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Terapia Combinada/métodos , Humanos , Terapia Neoadjuvante/métodos
10.
Cancer Chemother Pharmacol ; 82(4): 733-739, 2018 10.
Artigo em Inglês | MEDLINE | ID: mdl-30105460

RESUMO

PURPOSE: HER2-targeted therapy with trastuzumab and (CF/X) prolonged overall survival (OS) in metastatic HER2neu+ gastric carcinoma (GC). Lapatinib inhibits both EGFR and HER2neu. We investigated the efficacy and safety of lapatinib with epirubicin (E) + CF/X in GC according to HER2neu and EGFR status. METHODS: Tumors from chemotherapy-naïve patients were screened centrally by fluorescence in situ hybridization (FISH) and immunohistochemistry (IHC). Patients with EGFR and/or HER2neu expression or amplification were allocated to three strata based on EGFR/HER2neu status and were randomized to lapatinib (arm A) or placebo (arm B), with 6 cycles of ECF or ECX (investigator-selected). The primary endpoint was progression-free survival (PFS) in stratum 3. RESULTS: 29 of 72 screened patients were randomized to strata 1 (HER2neu+: by FISH and IHC, n = 6), 2 (HER2neu-: by FISH/+ by IHC, n = 5) and 3 (HER2neu-/EGFR+, n = 18), of which 28 patients were eligible (14 per arm). Enrollment was curtailed after announcement of the negative LOGiC trial results. Median PFS was 8.0 versus 5.9 months (HR = 0.86, 95% CI 0.37-1.99) in the per protocol population, and 8.0 versus 6.3 months (HR = 0.85, 95% CI 0.30-2.46) for stratum 3, in the lapatinib versus placebo arm respectively. Median OS was 13.8 versus 10.1 months, respectively (HR = 0.90, 95% CI 0.35-2.27). There were no safety concerns. CONCLUSIONS: Central EGFR and HER2neu stratification by IHC and FISH can be used for further pan-HER strategies. Lapatinib with ECF/X was well tolerated, but did not show clear activity in patients with metastatic GC.


Assuntos
Lapatinib , Receptor ErbB-2 , Neoplasias Gástricas , Adulto , Idoso , Protocolos de Quimioterapia Combinada Antineoplásica/administração & dosagem , Protocolos de Quimioterapia Combinada Antineoplásica/efeitos adversos , Cisplatino/administração & dosagem , Cisplatino/efeitos adversos , Epirubicina/administração & dosagem , Epirubicina/efeitos adversos , Receptores ErbB/antagonistas & inibidores , Receptores ErbB/metabolismo , Feminino , Fluoruracila/administração & dosagem , Fluoruracila/efeitos adversos , Humanos , Imuno-Histoquímica , Hibridização in Situ Fluorescente , Lapatinib/administração & dosagem , Lapatinib/efeitos adversos , Masculino , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Intervalo Livre de Progressão , Inibidores de Proteínas Quinases/administração & dosagem , Inibidores de Proteínas Quinases/efeitos adversos , Receptor ErbB-2/antagonistas & inibidores , Receptor ErbB-2/metabolismo , Neoplasias Gástricas/tratamento farmacológico , Neoplasias Gástricas/patologia , Resultado do Tratamento
11.
Eur J Cancer ; 79: 41-49, 2017 07.
Artigo em Inglês | MEDLINE | ID: mdl-28460245

RESUMO

The primary treatment of pancreatic cancer was the topic of the 3rd St. Gallen Conference 2016. A multidisciplinary panel reviewed the current evidence and discussed controversial issues in a moderated consensus session. Here we report on the key expert recommendations. It was generally accepted that radical surgical resection followed by adjuvant chemotherapy offers the only evidence-based treatment with a chance for cure. Initial staging should classify localised tumours as resectable or unresectable (i.e. locally advanced pancreatic cancer) although there remains a large grey-zone of potentially resectable disease between these two categories which has recently been named as borderline resectable, a concept which was generally accepted by the panel members. However, the definition of these borderline-resectable (BR) tumours varies between classifications due to their focus on either (i) technical hurdles (e.g. the feasibility of vascular resection) or (ii) oncological outcome (e.g. predicting the risk of a R1 resection and/or occult metastases). The resulting expert discussion focussed on imaging standards as well as the value of pretherapeutic laparoscopy. Indications for biliary drainage were seen especially before neoadjuvant therapy. Following standard resection, the panel unanimously voted for the use of adjuvant chemotherapy after R0 resection and considered it as a reasonable standard of care after R1 resection, even though the optimal pathologic evaluation and the definition of R0/R1 was the issue of an ongoing debate. The general concept of BR tumours was considered as a good basis to select patients for preoperative therapy, albeit its current impact on the therapeutic strategy was far less clear. Main focus of the conference was to discuss the limits of surgical resection and to identify ways to standardise procedures and to improve curative outcome, including adjuvant and perioperative treatment.


Assuntos
Neoplasias Pancreáticas/terapia , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Quimioterapia Adjuvante/métodos , Colangiografia/métodos , Consenso , Humanos , Terapia Neoadjuvante/métodos , Estadiamento de Neoplasias , Neoplasias Pancreáticas/patologia , Stents
13.
Eur J Cancer ; 63: 11-24, 2016 08.
Artigo em Inglês | MEDLINE | ID: mdl-27254838

RESUMO

Primary treatment of rectal cancer was the focus of the second St. Gallen European Organisation for Research and Treatment of Cancer (EORTC) Gastrointestinal Cancer Conference. In the context of the conference, a multidisciplinary international expert panel discussed and voted on controversial issues which could not be easily answered using published evidence. Main topics included optimal pretherapeutic imaging, indication and type of neoadjuvant treatment, and the treatment strategies in advanced tumours. Here we report the key recommendations and summarise the related evidence. The treatment strategy for localised rectal cancer varies from local excision in early tumours to neoadjuvant radiochemotherapy (RCT) in combination with extended surgery in locally advanced disease. Optimal pretherapeutic staging is a key to any treatment decision. The panel recommended magnetic resonance imaging (MRI) or MRI + endoscopic ultrasonography (EUS) as mandatory staging modalities, except for early T1 cancers with an option for local excision, where EUS in addition to MRI was considered to be most important because of its superior near-field resolution. Primary surgery with total mesorectal excision was recommended by most panellists for some early tumours with limited risk of recurrence (i.e. cT1-2 or cT3a N0 with clear mesorectal fascia on MRI and clearly above the levator muscles), whereas all other stages were considered for multimodal treatment. The consensus panel recommended long-course RCT over short-course radiotherapy for most clinical situations where neoadjuvant treatment is indicated, with the exception of T3a/b N0 tumours where short-course radiotherapy or even no neoadjuvant therapy were regarded to be an option. In patients with potentially resectable tumours and synchronous liver metastases, most panel members did not see an indication to start with classical fluoropyrimidine-based RCT but rather favoured preoperative short-course radiotherapy with systemic combination chemotherapy or alternatively a liver-first resection approach in resectable metastases, which both allow optimal systemic therapy for the metastatic disease. In general, proper patient selection and discussion in an experienced multidisciplinary team was considered as crucial component of care.


Assuntos
Neoplasias Retais/terapia , Antineoplásicos/uso terapêutico , Quimiorradioterapia/métodos , Terapia Combinada , Diagnóstico por Imagem/métodos , Europa (Continente) , Humanos , Terapia Neoadjuvante/métodos , Estadiamento de Neoplasias/métodos , Neoplasias Retais/diagnóstico , Medição de Risco/métodos
14.
Eur J Cancer ; 59: 160-170, 2016 05.
Artigo em Inglês | MEDLINE | ID: mdl-27039171

RESUMO

The new therapeutic approach of using immune checkpoint inhibitors as anticancer agents is a landmark innovation. Early studies suggest that immune checkpoint inhibition might also be effective in patients with gastrointestinal cancer. To improve the efficacy of immunotherapy, different strategies are currently under evaluation. This review summarises the discussion during the European Organisation for Research and Treatment of Cancer Gastrointestinal Tract Cancer Translational Research Meeting in Mainz in November 2014 and provides an update on the most recent results of immune therapy in gastrointestinal cancers. Knowledge of potential relationships between tumour cells and their microenvironment including the immune system will be essential in gastrointestinal malignancies. In this context, the density of T cell infiltration within colorectal cancer metastases has been associated with response to chemotherapy, and a high expression of programmed cell death ligand 1 (PD-L1) in advanced gastric cancer has been related with poor prognosis. Effective targets might include neo-antigens encoded from genes carrying tumour-specific somatic mutations. Tailored immunotherapy based on such mutations could enable the effective targeting of an individual patient's tumour with vaccines produced on demand. Other strategies considering checkpoint inhibitors have shown efficacy by targeting cytotoxic T-lymphocyte-associated protein 4 and PD-1 or PD-L1. DNA mismatch repair-deficient tumours appear to be potentially the best candidates for these therapies. Finally, the combination of oncolytic viruses with immunotherapy might boost antitumour activity as well. Further evaluation of these promising immunological therapeutic approaches will require large prospective clinical studies.


Assuntos
Neoplasias Gastrointestinais/terapia , Imunoterapia/tendências , Anticorpos Monoclonais Humanizados/uso terapêutico , Antineoplásicos/uso terapêutico , Biomarcadores Tumorais/metabolismo , Pontos de Checagem do Ciclo Celular/efeitos dos fármacos , Métodos Epidemiológicos , Previsões , Marcadores Genéticos/fisiologia , Humanos , Imunoterapia/métodos , Terapia de Alvo Molecular/métodos , Terapia de Alvo Molecular/tendências , Terapia Viral Oncolítica/métodos , Resultado do Tratamento
15.
Eur J Cancer ; 51(17): 2708-17, 2015 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-26342674

RESUMO

AIM: To investigate whether the immune response in colorectal liver metastases is related to progression free survival (PFS) and if this may be influenced by systemic therapy. METHODS: A retrospective central collection of tumour tissue was organised for the European Organisation for Research and Treatment of Cancer (EORTC) study 40983, where patients with colorectal liver metastases were treated by either resection alone or resection with perioperative FOLFOX. Immunostaining on whole slides was performed to recognise T-lymphocytes (CD3+, CD4+, CD8+), B-lymphocytes (CD20+), macrophages (CD68+) and mast cells (CD117+) inside the tumour, at the tumour border (TNI) and in normal liver tissue surrounding the tumour (0.5-2mm from the TNI). Immunological response was compared between treatment arms and correlated to PFS. RESULTS: Tumour tissue and immune response profiles were available for 82 resected patients, 38 in the perioperative chemotherapy arm and 44 in the surgery alone arm. Baseline patient and disease characteristics were similar between the treatment arms. In response to chemotherapy, we observed increased CD3+ lymphocyte and mast cell counts inside the tumour (p<0.01), lower CD4+ lymphocytes in the normal liver tissue (p=0.02) and lower macrophage counts in normal tissue (p<0.01) and at the TNI (p=0.02). High number of CD3+ lymphocyte and mast cells, and high T-cell score were correlated with tumour regression grade (TRG). Prolonged PFS correlated with the presence of mast cells in the tumour (9.8 versus 16.5 months, Hazard ratio (HR) 0.54 p=0.03), higher CD3+ lymphocyte count at the TNI (10.8 versus 22.8 months, HR 0.57, p=0.03) and T-cell score >2 (10.8 versus 38.6 months, HR 0.51, p=0.04). CONCLUSION: Our analyses in the context of a randomised study suggest that chemotherapy influences immune cell profiles, independent of patient characteristics. Immune responses of lymphocytes and mast cells were associated with pathological response to chemotherapy and to increased PFS. High CD3+ lymphocytes at the tumour front and intratumoural mast cells appear to be prognostic for patients with colorectal liver metastases.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Neoplasias Colorretais/tratamento farmacológico , Neoplasias Colorretais/cirurgia , Neoplasias Hepáticas/tratamento farmacológico , Neoplasias Hepáticas/cirurgia , Adulto , Idoso , Antígenos CD/metabolismo , Antígenos CD20/metabolismo , Antígenos de Diferenciação Mielomonocítica/metabolismo , Linfócitos B/efeitos dos fármacos , Linfócitos B/metabolismo , Complexo CD3/metabolismo , Quimioterapia Adjuvante/métodos , Neoplasias Colorretais/patologia , Terapia Combinada , Intervalo Livre de Doença , Feminino , Fluoruracila/administração & dosagem , Humanos , Sistema Imunitário/efeitos dos fármacos , Sistema Imunitário/metabolismo , Sistema Imunitário/patologia , Leucovorina/administração & dosagem , Neoplasias Hepáticas/secundário , Macrófagos/efeitos dos fármacos , Macrófagos/metabolismo , Masculino , Pessoa de Meia-Idade , Compostos Organoplatínicos/administração & dosagem , Oxaliplatina , Prognóstico , Estudos Retrospectivos , Linfócitos T/efeitos dos fármacos , Linfócitos T/metabolismo , Resultado do Tratamento
16.
Pancreas ; 44(7): 1046-52, 2015 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-26355547

RESUMO

Pancreatic cancer is aggressive, chemoresistant, and characterized by complex and poorly understood molecular biology. The epidermal growth factor receptor (EGFR) pathway is frequently activated in pancreatic cancer; therefore, it is a rational target for new treatments. However, the EGFR tyrosine kinase inhibitor erlotinib is currently the only targeted therapy to demonstrate a very modest survival benefit when added to gemcitabine in the treatment of patients with advanced pancreatic cancer. There is no molecular biomarker to predict the outcome of erlotinib treatment, although rash may be predictive of improved survival; EGFR expression does not predict the biologic activity of anti-EGFR drugs in pancreatic cancer, and no EGFR mutations are identified as enabling the selection of patients likely to benefit from treatment. Here, we review clinical studies of EGFR-targeted therapies in combination with conventional cytotoxic regimens or multitargeted strategies in advanced pancreatic cancer, as well as research directed at molecules downstream of EGFR as alternatives or adjuncts to receptor targeting. Limitations of preclinical models, patient selection, and trial design, as well as the complex mechanisms underlying resistance to EGFR-targeted agents, are discussed. Future clinical trials must incorporate translational research end points to aid patient selection and circumvent resistance to EGFR inhibitors.


Assuntos
Receptores ErbB/antagonistas & inibidores , Cloridrato de Erlotinib/antagonistas & inibidores , Terapia de Alvo Molecular/métodos , Neoplasias Pancreáticas/tratamento farmacológico , Transdução de Sinais/efeitos dos fármacos , Antineoplásicos/administração & dosagem , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Receptores ErbB/metabolismo , Cloridrato de Erlotinib/metabolismo , Humanos , Inibidores de Proteínas Quinases/administração & dosagem , Inibidores de Proteínas Quinases/uso terapêutico , Análise de Sobrevida
17.
Eur J Cancer ; 48(16): 2941-53, 2012 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-22921186

RESUMO

The 1st St. Gallen EORTC Gastrointestinal Cancer Conference 2012 Expert Panel clearly differentiated treatment and staging recommendations for the various gastroesophageal cancers. For locally advanced gastric cancer (≥T3N+), the preferred treatment modality was pre- and postoperative chemotherapy. The majority of panel members would also treat T2N+ or even T2N0 tumours with a similar approach mainly because pretherapeutic staging was considered highly unreliable. It was agreed that adenocarcinoma of the gastroesophageal junction (AEG) is classified best according to Siewert et al. Preoperative radiochemotherapy (RCT) is the preferred treatment for AEG type I and II tumours. For AEG type III, i.e. tumours which may be considered as gastric cancer, perioperative chemotherapy is the majority approach. For resectable squamous cell cancer of the oesophagus a clear majority recommended radiochemotherapy followed by surgery as optimal approach, irrespective of tumour size. In contrast, definitive RCT was judged appropriate for advanced tumours with extended lymph node involvement (N2) or for cancers of the upper oesophagus. Additional recommendations are presented on the use of endosonography, PET-CT scan and laparoscopy for staging and on the preferred approach to surgery.


Assuntos
Adenocarcinoma/terapia , Carcinoma de Células Escamosas/terapia , Neoplasias Esofágicas/terapia , Esofagectomia , Junção Esofagogástrica/cirurgia , Gastrectomia , Neoplasias Gástricas/terapia , Adenocarcinoma/patologia , Adenocarcinoma/cirurgia , Carcinoma de Células Escamosas/patologia , Carcinoma de Células Escamosas/cirurgia , Quimiorradioterapia Adjuvante , Quimioterapia Adjuvante , Detecção Precoce de Câncer , Neoplasias Esofágicas/patologia , Neoplasias Esofágicas/cirurgia , Junção Esofagogástrica/patologia , Humanos , Terapia Neoadjuvante , Estadiamento de Neoplasias , Valor Preditivo dos Testes , Neoplasias Gástricas/patologia , Neoplasias Gástricas/cirurgia , Resultado do Tratamento
18.
Ann Surg ; 255(3): 534-9, 2012 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-22314329

RESUMO

OBJECTIVE: In EORTC study 40983, perioperative FOLFOX increased progression-free survival (PFS) compared with surgery alone for patients with initially 1 to 4 resectable liver metastases from colorectal cancer (CRC). We conducted an exploratory retrospective analysis to identify baseline factors possibly predictive for a benefit of perioperative FOLFOX on PFS. METHODS: The analysis was based on 237 events from 342 eligible patients. Cox proportional hazards regression models with a significance level of 0.1 were used to build up univariate and multivariate models. RESULTS: After adjustment for identified prognostic factors, moderately (5.1-30 ng/mL) and highly (>30 ng/mL) elevated carcinoembryonic antigen (CEA) serum levels were both predictive for the benefit of perioperative chemotherapy (interaction P = 0.07; hazard ratio [HR] = 0.58 and HR = 0.52 for treatment benefit). For patients with moderately or highly elevated CEA (>5 ng/mL), the 3-year PFS was 35% with perioperative chemotherapy compared to 20% with surgery alone. Performance status (PS) 0 and BMI lower than 30 were also predictive for the benefit of perioperative chemotherapy (interaction P = 0.04 and P = 0.02). However, the number of patients with PS 1 and BMI 30 or higher were limited. The benefit of perioperative therapy was not influenced by the number of metastatic lesions (1 vs 2-4, interaction HR = 0.98). CONCLUSIONS: Perioperative FOLFOX seems to benefit in particular patients with resectable liver metastases from CRC when CEA is elevated and when PS is unaffected, regardless of the number of metastatic lesions.ClinicalTrials.gov number NCT00006479.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Neoplasias Colorretais/patologia , Neoplasias Hepáticas/tratamento farmacológico , Neoplasias Hepáticas/secundário , Assistência Perioperatória , Terapia Combinada , Feminino , Fluoruracila/uso terapêutico , Humanos , Leucovorina/uso terapêutico , Neoplasias Hepáticas/cirurgia , Masculino , Pessoa de Meia-Idade , Compostos Organoplatínicos/uso terapêutico , Prognóstico , Estudos Retrospectivos
19.
J Clin Oncol ; 28(35): 5210-8, 2010 Dec 10.
Artigo em Inglês | MEDLINE | ID: mdl-21060024

RESUMO

PURPOSE: Patients with locally advanced gastric cancer benefit from combined pre- and postoperative chemotherapy, although fewer than 50% could receive postoperative chemotherapy. We examined the value of purely preoperative chemotherapy in a phase III trial with strict preoperative staging and surgical resection guidelines. PATIENTS AND METHODS: Patients with locally advanced adenocarcinoma of the stomach or esophagogastric junction (AEG II and III) were randomly assigned to preoperative chemotherapy followed by surgery or to surgery alone. To detect with 80% power an improvement in median survival from 17 months with surgery alone to 24 months with neoadjuvant, 282 events were required. RESULTS: This trial was stopped for poor accrual after 144 patients were randomly assigned (72:72); 52.8% patients had tumors located in the proximal third of the stomach, including AEG type II and III. The International Union Against Cancer R0 resection rate was 81.9% after neoadjuvant chemotherapy as compared with 66.7% with surgery alone (P = .036). The surgery-only group had more lymph node metastases than the neoadjuvant group (76.5% v 61.4%; P = .018). Postoperative complications were more frequent in the neoadjuvant arm (27.1% v 16.2%; P = .09). After a median follow-up of 4.4 years and 67 deaths, a survival benefit could not be shown (hazard ratio, 0.84; 95% CI, 0.52 to 1.35; P = .466). CONCLUSION: This trial showed a significantly increased R0 resection rate but failed to demonstrate a survival benefit. Possible explanations are low statistical power, a high rate of proximal gastric cancer including AEG and/or a better outcome than expected after radical surgery alone due to the high quality of surgery with resections of regional lymph nodes outside the perigastic area (celiac trunc, hepatic ligament, lymph node at a. lienalis; D2).


Assuntos
Adenocarcinoma/tratamento farmacológico , Adenocarcinoma/cirurgia , Terapia Neoadjuvante/métodos , Neoplasias Gástricas/tratamento farmacológico , Neoplasias Gástricas/cirurgia , Adenocarcinoma/patologia , Adulto , Idoso , Antineoplásicos/uso terapêutico , Cárdia/patologia , Cárdia/cirurgia , Terapia Combinada , Procedimentos Cirúrgicos do Sistema Digestório , Intervalo Livre de Doença , Junção Esofagogástrica/efeitos dos fármacos , Junção Esofagogástrica/patologia , Junção Esofagogástrica/cirurgia , Feminino , Humanos , Estimativa de Kaplan-Meier , Masculino , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Neoplasias Gástricas/patologia
20.
Cancer Chemother Pharmacol ; 66(1): 191-5, 2010 May.
Artigo em Inglês | MEDLINE | ID: mdl-20354701

RESUMO

PURPOSE: To assess the efficacy and toxicity of paclitaxel and oxaliplatin in patients with non-resectable cancer of the oesophagus and adenocarcinoma of the gastro-oesophageal junction. METHODS: Treatment consisted of oxaliplatin 85 mg/m(2) and paclitaxel 90 mg/m(2) on days 1, 15 and 29 every 6 weeks. Patients with a non-resectable cancer of the oesophagus and/or adenocarcinoma of the gastro-oesophageal junction were eligible. RESULTS: Twenty-six chemotherapy-naive patients were enrolled who had the following characteristics: median age 59.5 years (range 46-81); ECOG scores of 0/1/2 for 7/16/3 patients, respectively, and 23 (88%) patients had metastatic disease. There were 5 patients (19%) with adenocarcinoma of the gastro-oesophageal junction and 21 patients (81%) with oesophageal cancer; 19 (73%) had a squamous cell cancer and 7 (27%) had an adenocarcinoma. NCI grade 4 toxicity (neutropenia) was observed in one patient. Non-haematological toxicity consisted mainly of grade 1/2 neurosensory toxicity. The overall response rate by the intention-to-treat analysis was 15% with 4 patients having confirmed partial response. Overall tumour control rate was 73%. Median overall survival was 12.3 months (range 1.5-66) and median time to progression was 4.5 months (range 0.8-19.3). CONCLUSION: This regimen is well tolerated and demonstrates a modest response rate with a favourable disease control rate.


Assuntos
Adenocarcinoma/tratamento farmacológico , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Neoplasias Esofágicas/tratamento farmacológico , Junção Esofagogástrica , Compostos Organoplatínicos/administração & dosagem , Paclitaxel/administração & dosagem , Neoplasias Gástricas/tratamento farmacológico , Idoso , Idoso de 80 Anos ou mais , Protocolos de Quimioterapia Combinada Antineoplásica/efeitos adversos , Intervalo Livre de Doença , Neoplasias Esofágicas/diagnóstico , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Compostos Organoplatínicos/efeitos adversos , Oxaliplatina , Paclitaxel/efeitos adversos , Neoplasias Gástricas/diagnóstico , Resultado do Tratamento
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA