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1.
Rev Med Suisse ; 15(649): 924-928, 2019 May 01.
Artigo em Francês | MEDLINE | ID: mdl-31050240

RESUMO

Determining if a critically ill patient with cancer will benefit from medical care in an intensive care unit can be a real challenge. Studies show that anticipating critical situations in oncology and collaboration between oncologists and intensivists diminish mortality and enhance resource use. This article covers some of the facts to consider in order to improve the management of these patients.


La question du projet thérapeutique et de l'admission ou non aux soins intensifs (SI) d'un patient souffrant d'un cancer et se trouvant en situation critique peut être complexe à appréhender. La décision d'un tel transfert est lourde de conséquences pour les patients et leurs familles, ainsi que pour son coût humain et économique. Il est donc primordial d'avoir une réflexion en amont sur le bien-fondé de chaque transfert. Une concertation régulière impliquant le médecin traitant/l'oncologue et le malade/sa famille tout au long de l'évolution de la maladie permet de clarifier les situations susceptibles de conduire à un transfert en SI.


Assuntos
Unidades de Terapia Intensiva , Neoplasias , Admissão do Paciente , Cuidados Críticos , Estado Terminal , Hospitalização , Humanos , Oncologia , Neoplasias/terapia
2.
Swiss Med Wkly ; 149: w20031, 2019 Mar 25.
Artigo em Inglês | MEDLINE | ID: mdl-30943308

RESUMO

This update on plasma cell myeloma has been elaborated by a Swiss expert panel as a result of the plethora of new data on the treatment of plasma cell myeloma reported recently. It adds new insights to the more extensive review that was published 3 years ago and may help clinicians on decision making for their patients. The new recommendations for distinguishing plasma cell myeloma from smouldering myeloma are briefly presented, including a section on contemporary imaging studies with this respect. Former panel recommendations that remain unchanged by new results will not be discussed in detail as the major focus of this review is on treatment-relevant new developments.


Assuntos
Mieloma Múltiplo , Guias de Prática Clínica como Assunto , Humanos , Suíça
3.
J Thorac Oncol ; 14(1): 115-123, 2019 01.
Artigo em Inglês | MEDLINE | ID: mdl-30267838

RESUMO

INTRODUCTION: Long-term data on outcomes of operable stage III NSCLC are scarce. METHODS: Individual patient data from 368 patients enrolled in one phase III and two phase II trials were pooled and outcomes after applying the eighth (denoted with an asterisk [*]) versus the sixth TNM staging edition were compared. Patients were treated with either preoperative radiotherapy following 3 cycles of induction chemotherapy (trimodal) or neoadjuvant chemotherapy alone (bimodal). RESULTS: With the sixth version, the 5- and 10-year survival rates were 38% and 28% for stage IIIA, respectively, and 36% and 24% for stage IIIB, respectively. Factors associated with improved 5-year overall survival were younger age, R0 resection, and pathologic complete remission (pCR) (p = 0.043, p < 0.001 and p = 0.009). With the eighth TNM staging version, 162 patients were moved from stage IIIA to IIIB*. The 5- and 10-year survival rates were 41% and 29% for stage IIIA*, respectively, and 35% and 27% for stage IIIB* patients, respectively. There was no difference in the bi- versus trimodal group with regard to median overall survival (28 months [95% confidence interval (CI): 21-39 months] and 37 months [95% CI: 24-51 months], p = 0.9) and event-free survival (12 months [95% CI: 9-15 months] versus 13 months [95% CI: 10-22 months], p = 0.71). CONCLUSIONS: We showed favorable 10-year survival rates of 29% and 27% in stage IIIA* and IIIB*, respectively. Younger age, R0 resection, and pathologic complete response were associated with improved long-term survival. Outcomes using the sixth versus eighth edition of the TNM classification were similar in operable stage III NSCLC.


Assuntos
Carcinoma Pulmonar de Células não Pequenas/cirurgia , Carcinoma Pulmonar de Células não Pequenas/terapia , Neoplasias Pulmonares/cirurgia , Neoplasias Pulmonares/terapia , Carcinoma Pulmonar de Células não Pequenas/patologia , Feminino , Humanos , Neoplasias Pulmonares/patologia , Estadiamento de Neoplasias
4.
Clin Lung Cancer ; 18(3): 303-309, 2017 05.
Artigo em Inglês | MEDLINE | ID: mdl-27993482

RESUMO

BACKGROUND: Pemetrexed and bevacizumab as single agents have been approved for maintenance therapy after platinum-based induction in patients with advanced nonsquamous non-small-cell lung cancer. It is currently unknown whether bevacizumab plus pemetrexed is superior to pemetrexed alone. PATIENTS AND METHODS: We conducted a nonrandomized phase II trial with 2 sequential cohorts. In the first cohort, 77 patients were treated with 4 cycles of cisplatin, bevacizumab, and pemetrexed every 3 weeks, followed by bevacizumab plus pemetrexed maintenance until progression. In the second cohort, we treated 52 patients without bevacizumab, using maintenance with pemetrexed alone. Progression-free survival (PFS), overall survival (OS), overall response rate (ORR), adverse events, and the treatment costs of the 2 cohorts were compared. RESULTS: The median PFS from the time of registration was 6.9 months in cohort 1 and 5.6 months in cohort 2. The ORR was 62.3% in cohort 1% and 44.2% in cohort 2. The PFS (hazard ratio, 0.7; 95% confidence interval [CI], 0.5-1.0; P = .041) and ORR (odds ratio, 2.1; 95% CI, 1.0-4.3; P = .049) were better in cohort 1 than in cohort 2. No OS difference was found (hazard ratio, 1.0; 95% CI, 0.7-1.6; P = .890) after a median follow-up period of 47 months for cohort 1 and 27 months for cohort 2. The rate of grade ≥ 3 adverse events was greater in cohort 1. The treatment costs per patient were on average 1.4 times greater for cohort 1. CONCLUSION: The addition of bevacizumab increased the ORR and PFS, but not OS, in our nonrandomized trial. Furthermore, the addition of bevacizumab was associated with greater toxicity and higher costs.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Bevacizumab/uso terapêutico , Carcinoma Pulmonar de Células não Pequenas/tratamento farmacológico , Neoplasias Pulmonares/tratamento farmacológico , Pemetrexede/uso terapêutico , Adulto , Idoso , Protocolos de Quimioterapia Combinada Antineoplásica/economia , Carcinoma Pulmonar de Células não Pequenas/mortalidade , Carcinoma Pulmonar de Células não Pequenas/patologia , Estudos de Coortes , Análise Custo-Benefício , Feminino , Seguimentos , Humanos , Neoplasias Pulmonares/mortalidade , Neoplasias Pulmonares/patologia , Masculino , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Análise de Sobrevida , Suíça , Resultado do Tratamento
5.
Lancet ; 386(9998): 1049-56, 2015 Sep 12.
Artigo em Inglês | MEDLINE | ID: mdl-26275735

RESUMO

BACKGROUND: One of the standard options in the treatment of stage IIIA/N2 non-small-cell lung cancer is neoadjuvant chemotherapy and surgery. We did a randomised trial to investigate whether the addition of neoadjuvant radiotherapy improves outcomes. METHODS: We enrolled patients in 23 centres in Switzerland, Germany and Serbia. Eligible patients had pathologically proven, stage IIIA/N2 non-small-cell lung cancer and were randomly assigned to treatment groups in a 1:1 ratio. Those in the chemoradiotherapy group received three cycles of neoadjuvant chemotherapy (100 mg/m(2) cisplatin and 85 mg/m(2) docetaxel) followed by radiotherapy with 44 Gy in 22 fractions over 3 weeks, and those in the control group received neoadjuvant chemotherapy alone. All patients were scheduled to undergo surgery. Randomisation was stratified by centre, mediastinal bulk (less than 5 cm vs 5 cm or more), and weight loss (5% or more vs less than 5% in the previous 6 months). The primary endpoint was event-free survival. Analyses were done by intention to treat. This trial is registered with ClinicalTrials.gov, number NCT00030771. FINDINGS: From 2001 to 2012, 232 patients were enrolled, of whom 117 were allocated to the chemoradiotherapy group and 115 to the chemotherapy group. Median event-free survival was similar in the two groups at 12·8 months (95% CI 9·7-22·9) in the chemoradiotherapy group and 11·6 months (8·4-15·2) in the chemotherapy group (p=0·67). Median overall survival was 37·1 months (95% CI 22·6-50·0) with radiotherapy, compared with 26·2 months (19·9-52·1) in the control group. Chemotherapy-related toxic effects were reported in most patients, but 91% of patients completed three cycles of chemotherapy. Radiotherapy-induced grade 3 dysphagia was seen in seven (7%) patients. Three patients died in the control group within 30 days after surgery. INTERPRETATION: Radiotherapy did not add any benefit to induction chemotherapy followed by surgery. We suggest that one definitive local treatment modality combined with neoadjuvant chemotherapy is adequate to treat resectable stage IIIA/N2 non-small-cell lung cancer. FUNDING: Swiss State Secretariat for Education, Research and Innovation (SERI), Swiss Cancer League, and Sanofi.


Assuntos
Carcinoma Pulmonar de Células não Pequenas/terapia , Quimiorradioterapia Adjuvante/métodos , Neoplasias Pulmonares/terapia , Adulto , Idoso , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Carcinoma Pulmonar de Células não Pequenas/patologia , Carcinoma Pulmonar de Células não Pequenas/secundário , Quimiorradioterapia Adjuvante/efeitos adversos , Feminino , Humanos , Neoplasias Pulmonares/patologia , Metástase Linfática , Masculino , Pessoa de Meia-Idade , Terapia Neoadjuvante/efeitos adversos , Terapia Neoadjuvante/métodos , Estadiamento de Neoplasias , Pneumonectomia/métodos , Análise de Sobrevida , Resultado do Tratamento
6.
J Med Case Rep ; 9: 30, 2015 Apr 08.
Artigo em Inglês | MEDLINE | ID: mdl-26187587

RESUMO

INTRODUCTION: The World Health Organization classification of chronic myeloproliferative disease encompasses eight entities of bone marrow neoplasms, among them Breakpoint cluster region-Abelson murine leukemia viral oncogene homolog 1-positive chronic myeloid leukemia and polycythemia vera. Polycythemia vera requires, in the majority of cases (95%), the negativity of Breakpoint cluster region-Abelson murine leukemia viral oncogene homolog 1 rearrangement and the presence of the Janus kinase 2 mutation. We report a case of erythrocytosis as the primary manifestation of a chronic myeloid leukemia, with the presence of the Philadelphia chromosome and the Breakpoint cluster region-Abelson murine leukemia viral oncogene homolog 1 fusion gene, and in the absence of any Janus kinase 2 mutation. CASE PRESENTATION: A 68-year-old Caucasian woman, with a history of cigarette consumption and obstructive sleep apnoea syndrome (undergoing continuous positive airway pressure treatment) had presented to our institution with fatigue and a hemoglobin level of 18.6g/L, with slight leukocytosis at 16G/L, and no other anomalies on her complete blood cell count. Examination of her arterial blood gases found only a slight hypoxemia; erythropoietin and ferritin levels were very low and could not explain a secondary erythrocytosis. Further analyses revealed the absence of any Janus kinase 2 mutation, thus excluding polycythemia vera. Taken together with a high vitamin B12 level, we conducted a Breakpoint cluster region-Abelson murine leukemia viral oncogene homolog 1 gene analysis and bone marrow cytogenetic analysis, both of which returned positive, leading to the diagnosis of chronic myeloid leukemia. CONCLUSIONS: To date, this case is the first description of a Breakpoint cluster region-Abelson murine leukemia viral oncogene homolog 1-positive chronic myeloid leukemia, presenting with erythrocytosis as the initial manifestation, and mimicking a Janus kinase 2 V617F-negative polycythemia vera. Her impressive response to imatinib therapy underscores the importance of not missing this diagnosis.


Assuntos
Proteínas de Fusão bcr-abl , Leucemia Mielogênica Crônica BCR-ABL Positiva/complicações , Policitemia Vera/complicações , Policitemia/complicações , Idoso , Doença Crônica , Diagnóstico Diferencial , Feminino , Humanos , Mesilato de Imatinib/uso terapêutico , Leucemia Mielogênica Crônica BCR-ABL Positiva/tratamento farmacológico , Policitemia/tratamento farmacológico , Policitemia Vera/tratamento farmacológico , Inibidores de Proteínas Quinases/uso terapêutico
7.
Swiss Med Wkly ; 145: w14100, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-25999239

RESUMO

The availability of drugs such as thalidomide, bortezomib and lenalidomide changed the landscape in myeloma treatment and has extended the median survival up to 10 years with a substantial improvement in quality of life. This development prompted a Swiss expert panel to re-evaluate the current status and formulate updated clinical recommendations for the diagnosis and treatment of plasma cell myeloma. These recommendations should help clinicians in their decision making to achieve the best outcome based on currently available data.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Mieloma Múltiplo/diagnóstico , Mieloma Múltiplo/terapia , Quimioterapia de Consolidação , Transplante de Células-Tronco Hematopoéticas , Humanos , Quimioterapia de Manutenção , Gamopatia Monoclonal de Significância Indeterminada/patologia , Estadiamento de Neoplasias , Guias de Prática Clínica como Assunto , Recidiva , Retratamento , Suíça
8.
Clin Lung Cancer ; 16(5): 358-65, 2015 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-25843489

RESUMO

OBJECTIVE: The goal was to demonstrate that tailored therapy, according to tumor histology and epidermal growth factor receptor (EGFR) mutation status, and the introduction of novel drug combinations in the treatment of advanced non-small-cell lung cancer are promising for further investigation. METHODS: We conducted a multicenter phase II trial with mandatory EGFR testing and 2 strata. Patients with EGFR wild type received 4 cycles of bevacizumab, pemetrexed, and cisplatin, followed by maintenance with bevacizumab and pemetrexed until progression. Patients with EGFR mutations received bevacizumab and erlotinib until progression. Patients had computed tomography scans every 6 weeks and repeat biopsy at progression. The primary end point was progression-free survival (PFS) ≥ 35% at 6 months in stratum EGFR wild type; 77 patients were required to reach a power of 90% with an alpha of 5%. Secondary end points were median PFS, overall survival, best overall response rate (ORR), and tolerability. Further biomarkers and biopsy at progression were also evaluated. RESULTS: A total of 77 evaluable patients with EGFR wild type received an average of 9 cycles (range, 1-25). PFS at 6 months was 45.5%, median PFS was 6.9 months, overall survival was 12.1 months, and ORR was 62%. Kirsten rat sarcoma oncogene mutations and circulating vascular endothelial growth factor negatively correlated with survival, but thymidylate synthase expression did not. A total of 20 patients with EGFR mutations received an average of 16 cycles. PFS at 6 months was 70%, median PFS was 14 months, and ORR was 70%. Biopsy at progression was safe and successful in 71% of the cases. CONCLUSIONS: Both combination therapies were promising for further studies. Biopsy at progression was feasible and will be part of future SAKK studies to investigate molecular mechanisms of resistance.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Carcinoma Pulmonar de Células não Pequenas/tratamento farmacológico , Receptores ErbB/genética , Neoplasias Pulmonares/tratamento farmacológico , Adulto , Idoso , Idoso de 80 Anos ou mais , Bevacizumab/administração & dosagem , Biópsia , Carcinoma Pulmonar de Células não Pequenas/genética , Carcinoma Pulmonar de Células não Pequenas/patologia , Cisplatino/administração & dosagem , Intervalo Livre de Doença , Cloridrato de Erlotinib/administração & dosagem , Estudos de Viabilidade , Feminino , Humanos , Neoplasias Pulmonares/genética , Neoplasias Pulmonares/patologia , Masculino , Pessoa de Meia-Idade , Mutação , Pemetrexede/administração & dosagem , Taxa de Sobrevida
9.
J Oncol ; 2014: 743181, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-24665264

RESUMO

Insertion of central venous port (CVP) catheter in the cancer population is associated with increased incidence of venous thromboembolic events (VTE). However, trials have shown limited benefit of antithrombotic treatment to prevent catheter-related venous thrombosis. This prospective observational cohort study was designed to assess the incidence of VTE closely related to CVP implantation in patients with cancer and undergoing chemotherapy, and to identify a high risk subgroup of patients. Between February 2006 and December 2011, 1097 consecutive cancer patients with first CVP implantation were included. Catheter-related VTE were defined as deep venous thrombosis in the arm, with or without pulmonary embolism (PE), or isolated PE. The incidence of CVP-associated VTE was 5.9% (IC95 4.4-7.3%) at 3 months, and 11.3% (IC95 9.4-13.2%) at 12 months. The incidence of any VTE was 7.6% (IC95 6.0-9.3%) at 3 months, and 15.3% (IC95 13.1-17.6%) at 12 months. High Khorana risk score and lung cancer were significant predictors of 3 month VTE. In conclusion, this large cohort study of patients with first CVP catheter implantation confirms the high incidence of VTE associated with the CVP implantation and allow identifying high risk patients who may benefit from thromboprophylaxis.

11.
Support Care Cancer ; 21(9): 2565-73, 2013 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-23636645

RESUMO

PURPOSE: Chemotherapy-induced alopecia is very distressing for a patient and may have an impact on treatment decisions. On docetaxel-based therapy, alopecia occurs in a substantial proportion of patients. We aimed to investigate whether two different methods of scalp cooling can prevent hair loss. METHODS: In this open-label, prospective, nonrandomized trial, patients with solid tumors receiving docetaxel in a palliative setting were allocated according to patients' preference to short-term cooling (over 45 min postinfusion) with a Paxman PSC-2 machine (PAX), with cold cap (CC), or no cooling. The combined endpoint was alopecia World Health Organisation (WHO) III or IV or the necessity to wear a wig. Study identifier is Clinicaltrials.gov NCT01008774. RESULTS: Two hundred thirty-eight patients were included in the trial (128 patients PAX, 71 CC, and 39 no cooling). Number of cycles (median 4) and median docetaxel doses were similar across groups (55-60 mg/day on weekly therapy, 135-140 mg/day on 3-weekly therapy). Alopecia occurred with PAX, CC, and no cooling under 3-weekly docetaxel in 23, 27, and 74% and under weekly docetaxel in 7, 8, and 17%, respectively. Overall, cooling (PAX and CC combined) reduced risk of alopecia by 78% (hazard ratio 0.22; 95% confidence interval 0.12 to 0.41). CC and PAX prophylaxis led to the same degree of prevention of alopecia. Adverse events (AE) were reported in 5% (most frequently, sensation of cold), and 30 patients (13%) discontinued cooling measures after cycle 1. CONCLUSIONS: In this first comparison published to date, both PAX and CC offer efficacious protection against hair loss, in particular when docetaxel is administered in a 3-weekly interval.


Assuntos
Alopecia/induzido quimicamente , Alopecia/prevenção & controle , Protocolos de Quimioterapia Combinada Antineoplásica/efeitos adversos , Hipotermia Induzida/métodos , Neoplasias/tratamento farmacológico , Taxoides/efeitos adversos , Adulto , Idoso , Protocolos de Quimioterapia Combinada Antineoplásica/administração & dosagem , Docetaxel , Feminino , Humanos , Quimioterapia de Indução , Masculino , Pessoa de Meia-Idade , Neoplasias/prevenção & controle , Cuidados Paliativos/métodos , Estudos Prospectivos , Comportamento de Redução do Risco , Couro Cabeludo , Taxoides/administração & dosagem
12.
Lung Cancer ; 80(1): 81-4, 2013 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-23380224

RESUMO

We report on the medical history of a Caucasian smoker woman diagnosed with a stage IV NSCLC adenocarcinoma, characterized by a rare epidermal growth factor receptor (EGFR) point mutation in exon 21 codon 843 (p.V843I/c.2527G>A/COSMIC ID 85894). This genetic alteration revealed to be germline, after its presence was demonstrated in chondroblasts from the bone biopsy. While it is the first description of germline V843I mutation without concomitant additional known EGFR activating mutation, we modeled the EGFR ATP catalytic domain in complex with ATP, gefitinib and erlotinib using computer-aided approaches to estimate possible changes in affinity upon the V843I mutation.


Assuntos
Carcinoma Pulmonar de Células não Pequenas/genética , Receptores ErbB/genética , Mutação em Linhagem Germinativa , Neoplasias Pulmonares/genética , Sequência de Aminoácidos , Substituição de Aminoácidos , Carcinoma Pulmonar de Células não Pequenas/tratamento farmacológico , Análise Mutacional de DNA , Resistencia a Medicamentos Antineoplásicos/efeitos dos fármacos , Resistencia a Medicamentos Antineoplásicos/genética , Éxons/genética , Saúde da Família , Feminino , Humanos , Neoplasias Pulmonares/tratamento farmacológico , Masculino , Pessoa de Meia-Idade , Linhagem , Inibidores de Proteínas Quinases/farmacologia
13.
Clin Cancer Res ; 18(21): 6049-57, 2012 Nov 01.
Artigo em Inglês | MEDLINE | ID: mdl-22977195

RESUMO

PURPOSE: The EGF receptor (EGFR) is overexpressed in the majority of metastatic castration-resistant prostate cancers (mCRPC) and might represent a valid therapeutic target. The combination of docetaxel and cetuximab, the monoclonal antibody against EGFR, has not been tested in patients with prostate cancer. EXPERIMENTAL DESIGN: Patients with mCRPC progressing during or within 90 days after at least 12 weeks of docetaxel were included in this phase II trial. Treatment consisted of docetaxel (75 mg/m(2) every 3 weeks or 35 mg/m(2) on days 1, 8, 15 every 4 weeks) in combination with cetuximab (400 mg/m(2) on day 1 and then 250 mg/m(2) weekly). The primary endpoint was progression-free survival (PFS) at 12 weeks defined as the absence of prostate-specific antigen (PSA), radiographic, or clinical progression. Evaluation of known biomarkers of response and resistance to cetuximab (EGFR, PTEN, amphiregulin, epiregulin) was conducted. RESULTS: Thirty-eight patients were enrolled at 15 Swiss centers. Median age was 68 years and median PSA was 212 ng/mL. PFS at 12 weeks was 34% [95% confidence interval (CI), 19%-52%], PFS at 24 weeks was 20%, and median overall survival (OS) was 13.3 months (95% CI, 7.3-15.4). Seven patients (20%) had a confirmed ≥ 50% and 11 patients (31%) a confirmed ≥ 30% PSA decline. About 47% of enrolled patients experienced grade 3 and 8% grade 4 toxicities. A significantly improved PFS was found in patients with overexpression of EGFR and persistent activity of PTEN. CONCLUSIONS: EGFR inhibition with cetuximab might improve the outcome of patients with mCRPC. A potential correlation between EGFR overexpression, persistent expression of PTEN, and EGFR inhibition should be investigated further.


Assuntos
Anticorpos Monoclonais Humanizados/uso terapêutico , Antineoplásicos/uso terapêutico , Neoplasias da Próstata/tratamento farmacológico , Neoplasias da Próstata/patologia , Idoso , Idoso de 80 Anos ou mais , Anticorpos Monoclonais Humanizados/administração & dosagem , Anticorpos Monoclonais Humanizados/efeitos adversos , Antineoplásicos/administração & dosagem , Antineoplásicos/efeitos adversos , Protocolos de Quimioterapia Combinada Antineoplásica/efeitos adversos , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Cetuximab , Docetaxel , Receptores ErbB/genética , Humanos , Masculino , Pessoa de Meia-Idade , Metástase Neoplásica , Orquiectomia , PTEN Fosfo-Hidrolase/genética , Antígeno Prostático Específico/sangue , Neoplasias da Próstata/genética , Neoplasias da Próstata/mortalidade , Taxoides/administração & dosagem , Pesquisa Translacional Biomédica , Resultado do Tratamento
14.
Lung Cancer ; 71(3): 306-11, 2011 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-20709421

RESUMO

AIMS: Inhibitor of differentiation 1 (ID1) plays a role in cellular differentiation, proliferation, angiogenesis and tumor invasion. As shown recently, ID1 is positively regulated by the tyrosine kinase SRC in lung carcinoma cell lines and with that appears as a potential new therapeutic target in non-small cell carcinoma (NSCLC). To substantiate this hypothesis we examined ID1, SRC and matrix metalloproteinase-9 (MMP-9) immunohistochemically in human NSCLC specimens. METHODS: From 61 consecutive patient tissue samples of a tumor tissue bank a one core tissue microarray (TMA) was produced and whole slide tissue samples of preinvasive lesions used. The staining of commercial antibodies was assessed by the H-score. Statistical analyses based on Spearman's rank correlation coefficient. RESULTS: ID1 was expressed in the nucleus in 70% of squamous cell carcinomas and 50% of non-squamous cell carcinomas and in vascular endothelium of non-tumor tissue. Cytoplasmic staining was found in all samples for SRC and in 93% for MMP-9. ID1-positive tissue samples co-expressed SRC and MMP-9 in 94%. In non-squamous cell carcinomas, H-scores of ID1 and SRC correlated with each other (p=0.04). H-score of MMP-9 correlated with tumor grade (p=0.04). The carcinoma findings were reflected in preinvasive lesions. CONCLUSIONS: We describe for the first time the immunohistochemical expression of ID1 in the majority of NSCLC samples. The almost general co-expression of ID1, SRC and MMP-9 supports their cooperation in vivo and warrants further investigation of ID1 as a therapeutic target.


Assuntos
Carcinoma Pulmonar de Células não Pequenas/metabolismo , Regulação Neoplásica da Expressão Gênica , Proteína 1 Inibidora de Diferenciação/metabolismo , Adulto , Idoso , Idoso de 80 Anos ou mais , Carcinoma Pulmonar de Células não Pequenas/genética , Carcinoma Pulmonar de Células não Pequenas/patologia , Feminino , Humanos , Imuno-Histoquímica , Proteína 1 Inibidora de Diferenciação/genética , Masculino , Metaloproteinase 9 da Matriz/metabolismo , Pessoa de Meia-Idade , Transdução de Sinais , Quinases da Família src/metabolismo
15.
Proteomics ; 9(13): 3535-48, 2009 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-19609961

RESUMO

Cancer is caused by a complex pattern of molecular perturbations. To understand the biology of cancer, it is thus important to look at the activation state of key proteins and signaling networks. The limited amount of available sample material from patients and the complexity of protein expression patterns make the use of traditional protein analysis methods particularly difficult. In addition, the only approach that is currently available for performing functional studies is the use of serial biopsies, which is limited by ethical constraints and patient acceptance. The goal of this work was to establish a 3-D ex vivo culture technique in combination with reverse-phase protein microarrays (RPPM) as a novel experimental tool for use in cancer research. The RPPM platform allows the parallel profiling of large numbers of protein analytes to determine their relative abundance and activation level. Cancer tissue and the respective corresponding normal tissue controls from patients with colorectal cancer were cultured ex vivo. At various time points, the cultured samples were processed into lysates and analyzed on RPPM to assess the expression of carcinoembryonic antigen (CEA) and 24 proteins involved in the regulation of apoptosis. The methodology displayed good robustness and low system noise. As a proof of concept, CEA expression was significantly higher in tumor compared with normal tissue (p<0.0001). The caspase 9 expression signal was lower in tumor tissue than in normal tissue (p<0.001). Cleaved Caspase 8 (p=0.014), Bad (p=0.007), Bim (p=0.007), p73 (p=0.005), PARP (p<0.001), and cleaved PARP (p=0.007) were differentially expressed in normal liver and normal colon tissue. We demonstrate here the feasibility of using RPPM technology with 3-D ex vivo cultured samples. This approach is useful for investigating complex patterns of protein expression and modification over time. It should allow functional proteomics in patient samples with various applications such as pharmacodynamic analyses in drug development.


Assuntos
Proteínas Reguladoras de Apoptose/análise , Antígeno Carcinoembrionário/análise , Neoplasias do Colo/metabolismo , Análise Serial de Proteínas/métodos , Técnicas de Cultura de Tecidos/métodos , Proteínas Reguladoras de Apoptose/metabolismo , Antígeno Carcinoembrionário/metabolismo , Análise por Conglomerados , Humanos , Análise Serial de Proteínas/instrumentação , Reprodutibilidade dos Testes , Transdução de Sinais , Técnicas de Cultura de Tecidos/instrumentação
16.
Lancet Oncol ; 10(8): 785-93, 2009 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-19604722

RESUMO

BACKGROUND: Stage IIIB non-small-cell lung cancer (NSCLC) is usually thought to be unresectable, and is managed with chemotherapy with or without radiotherapy. However, selected patients might benefit from surgical resection after neoadjuvant chemotherapy and radiotherapy. The aim of this multicentre, phase II trial was to assess the efficacy and toxicity of a neoadjuvant chemotherapy and radiotherapy followed by surgery in patients with technically operable stage IIIB NSCLC. METHODS: Between September, 2001, and May, 2006, patients with pathologically proven and technically resectable stage IIIB NSCLC were sequentially treated with three cycles of neoadjuvant chemotherapy (cisplatin with docetaxel), immediately followed by accelerated concomitant boost radiotherapy (44 Gy in 22 fractions) and definitive surgery. The primary endpoint was event-free survival at 12 months. Efficacy analyses were done by intention to treat. This trial is registered with ClinicalTrials.gov, number NCT00030810. FINDINGS: 46 patients were enrolled, with a median age of 60 years (range 28-70). 13 (28%) patients had N3 disease, 36 (78%) had T4 disease. All patients received chemotherapy; 35 (76%) patients received radiotherapy. The main toxicities during chemotherapy were neutropenia (25 patients [54%] at grade 3 or 4) and febrile neutropenia (nine [20%]); the main toxicity after radiotherapy was oesophagitis (ten patients [29%]; nine grade 2, one grade 3). 35 patients (76%) underwent surgery, with pneumonectomy in 17 patients. A complete (R0) resection was achieved in 27 patients. Peri-operative complications occurred in 14 patients, including two deaths (30-day mortality 5.7%). Seven patients required a second surgical intervention. Pathological mediastinal downstaging was seen in 11 of the 28 patients who had lymph-node involvement at enrolment, a complete pathological response was seen in six patients. Event-free survival at 12 months was 54% (95% CI 39-67). After a median follow-up of 58 months, the median overall survival was 29 months (95% CI 16.1-NA), with survival at 1, 3, and 5 years of 67% (95% CI 52-79), 47% (32-61), and 40% (24-55). INTERPRETATION: A treatment strategy of neoadjuvant chemotherapy and radiotherapy followed by surgery is feasible in selected patients. Toxicity is considerable, but manageable. Survival compares favourably with historical results of combined treatment for less advanced stage IIIA disease. FUNDING: Swiss Group for Clinical Cancer Research (SAKK) and an unrestricted educational grant by Sanofi-Aventis (Switzerland).


Assuntos
Carcinoma Pulmonar de Células não Pequenas/terapia , Terapia Combinada/métodos , Neoplasias Pulmonares/terapia , Adulto , Idoso , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Carcinoma Pulmonar de Células não Pequenas/patologia , Cisplatino/administração & dosagem , Intervalo Livre de Doença , Docetaxel , Feminino , Humanos , Neoplasias Pulmonares/patologia , Masculino , Pessoa de Meia-Idade , Terapia Neoadjuvante , Estadiamento de Neoplasias , Pneumonectomia , Radioterapia , Taxoides/administração & dosagem
17.
Expert Rev Respir Med ; 2(5): 655-61, 2008 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-20477300

RESUMO

Non-small-cell lung cancer is the most common cause of cancer-related death worldwide. Surgery remains the cornerstone of treatment for localized, resectable lung cancer, although advanced stages are associated with a high risk of developing distant metastases. Large randomized trials have demonstrated an improvement in survival with additional chemotherapy administered before or after surgical intervention. Several meta-analyses have shown improved survival for adjuvant and neoadjuvant chemotherapy. This review discusses the data on adjuvant and neoadjuvant chemotherapy for resectable non-small-cell lung cancer and focuses especially on the advantages and disadvantages of induction treatment of operable stage IIIA N2 diseases.

18.
Lung Cancer ; 57(3): 282-91, 2007 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-17513005

RESUMO

The association of simian virus 40 (SV40) with malignant pleural mesothelioma is currently under debate. In some malignancies of viral aetiology, viral DNA can be detected in the patients' serum or plasma. To characterize the prevalence of SV40 in Swiss mesothelioma patients, we optimized a real-time PCR for quantitative detection of SV40 DNA in plasma, and used a monoclonal antibody for immunohistochemical detection of SV40 in mesothelioma tissue microarrays. Real-time PCR was linear over five orders of magnitude, and sensitive to a single gene copy. Repeat PCR determinations showed excellent reproducibility. However, SV40 status varied for independent DNA isolates of single samples. We noted that SV40 detection rates by PCR were drastically reduced by the implementation of strict room compartmentalization and decontamination procedures. Therefore, we systematically addressed common sources of contamination and found no cross-reactivity with DNA of other polyomaviruses. Contamination during PCR was rare and plasmid contamination was infrequent. SV40 DNA was reproducibly detected in only 4 of 78 (5.1%) plasma samples. SV40 DNA levels were low and not consistently observed in paired plasma and tumour samples from the same patient. Immunohistochemical analysis revealed a weak but reproducible SV40 staining in 16 of 341 (4.7%) mesotheliomas. Our data support the occurrence of non-reproducible SV40 PCR amplifications and underscore the importance of proper sample handling and analysis. SV40 DNA and protein were found at low prevalence (5%) in plasma and tumour tissue, respectively. This suggests that SV40 does not appear to play a major role in the development of mesothelioma.


Assuntos
DNA Viral/análise , Mesotelioma/etiologia , Neoplasias Pleurais/etiologia , Vírus 40 dos Símios/isolamento & purificação , Adulto , Idoso , Sequência de Bases , Linhagem Celular Tumoral , DNA Viral/sangue , Reações Falso-Positivas , Feminino , Humanos , Imuno-Histoquímica , Masculino , Mesotelioma/virologia , Pessoa de Meia-Idade , Dados de Sequência Molecular , Neoplasias Pleurais/virologia , Reação em Cadeia da Polimerase , Suíça
19.
Lung Cancer ; 55(1): 1-14, 2007 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-17070615

RESUMO

PURPOSE: To review the evidence implicating the deregulation of cyclin D1 in the pathogenesis of non-small cell lung cancer (NSCLC), and to discuss the opportunities for targeted clinical intervention. METHODS: Data published until June 2006 are summarized, and previously unpublished results from our own research are included. RESULTS: In normal cells, cyclin D1 complexes with and activates cyclin-dependent kinases (CDK) and acts as a transcriptional regulator. The protein is frequently overexpressed in a wide range of cancers, sometimes coincident with CCND1 (cyclin D1) gene amplification (5-20% of tumours). A low level of somatic mutations have been seen in certain tumours. CCND1 is amplified in NSCLC and cyclin D1 is frequently overexpressed in tumours and pre-invasive bronchial lesions, generally from one parental allele. Mutation analyses revealed a frequent CCND1 gene polymorphism (A870G) that modulates alternative splicing and allows expression of an alternative cyclin D1 transcript (transcript cyclin D1b). The encoded cyclin D1b protein lacks a specific phosphorylation site required for nuclear export. Genotype has been correlated with the risk and/or severity of disease or drug response across a range of malignancies, including lung cancer. Together, these findings suggest a strong pathological role for cyclin D1 deregulation in bronchial neoplasia. CONCLUSION: Current data indicate that cyclin D1 overexpression is not a consequence of, but rather a pivotal element in the process of malignant transformation in the lung and other tissues. This understanding may open new avenues for lung cancer diagnosis, treatment and prevention.


Assuntos
Carcinoma Pulmonar de Células não Pequenas/patologia , Carcinoma Pulmonar de Células não Pequenas/fisiopatologia , Ciclina D1/genética , Neoplasias Pulmonares/patologia , Neoplasias Pulmonares/fisiopatologia , Adenoma/patologia , Adenoma/fisiopatologia , Transformação Celular Neoplásica , Regulação Neoplásica da Expressão Gênica , Glioblastoma/patologia , Glioblastoma/fisiopatologia , Humanos , Polimorfismo Genético
20.
Anticancer Res ; 27(6C): 4279-88, 2007.
Artigo em Inglês | MEDLINE | ID: mdl-18214032

RESUMO

BACKGROUND: The Ca2+-binding protein calretinin (CR), while absent in normal colonocytes, is expressed in the majority of poorly differentiated colon carcinomas, and is hypothesized that mutations in the distal part (from exon 7 to 10) of the CR gene (CALB2) could be responsible for the aberrant CR expression. MATERIALS AND METHODS: Using PCR amplification of genomic DNA and restriction fragment length polymorphism analysis, four single nucleotide polymorphisms (SNPs) were identified in CALB2 intron 9. RESULTS: A significant positive association between the genotype at SNP513 and colon cancer was found: more C/T heterozygotes were found in patients with colon tumors (60%) compared to healthy controls (35%) or patients with lung tumors (38%). Our results indicate that C/T heterozygosity at position 513 is linked to CR expression in colon tumors and colon cancer cell lines, suggesting a link with increased carcinogenesis. CONCLUSION: The SNP513 in human CALB2 may thus be a predictive marker for colon tumors.


Assuntos
Biomarcadores Tumorais , Neoplasias do Colo/genética , Polimorfismo de Nucleotídeo Único , Proteína G de Ligação ao Cálcio S100/genética , Idoso , Sequência de Bases , Biomarcadores Tumorais/genética , Western Blotting , Calbindina 2 , Neoplasias do Colo/patologia , Predisposição Genética para Doença , Heterozigoto , Humanos , Íntrons , Pessoa de Meia-Idade , Dados de Sequência Molecular , Reação em Cadeia da Polimerase , Fatores de Risco
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