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1.
Rheumatology (Oxford) ; 62(9): 3133-3138, 2023 09 01.
Artigo em Inglês | MEDLINE | ID: mdl-36637209

RESUMO

OBJECTIVES: Although the painful and disabling features of early diffuse cutaneous SSc (dcSSc) have an inflammatory basis and could respond to corticosteroids, corticosteroids are a risk factor for scleroderma renal crisis. Whether or not they should be prescribed is therefore highly contentious. Our aim was to examine safety and efficacy of moderate-dose prednisolone in early dcSSc. METHODS: PRedSS set out as a Phase II, multicentre, double-blind randomized controlled trial, converted to open-label during the Covid-19 pandemic. Patients were randomized to receive either prednisolone (∼0.3 mg/kg) or matching placebo (or no treatment during open-label) for 6 months. Co-primary endpoints were the HAQ Disability Index (HAQ-DI) and modified Rodnan skin score (mRSS) at 3 months. Over 20 secondary endpoints included patient reported outcome measures reflecting pain, itch, fatigue, anxiety and depression, and helplessness. Target recruitment was 72 patients. RESULTS: Thirty-five patients were randomized (17 prednisolone, 18 placebo/control). The adjusted mean difference between treatment groups at 3 months in HAQ-DI score was -0.10 (97.5% CI: -0.29, 0.10), P = 0.254, and in mRSS -3.90 (97.5% CI: -8.83, 1.03), P = 0.070, both favouring prednisolone but not significantly. Patients in the prednisolone group experienced significantly less pain (P = 0.027), anxiety (P = 0.018) and helplessness (P = 0.040) than control patients at 3 months. There were no renal crises, but sample size was small. CONCLUSION: PRedSS was terminated early primarily due to the Covid-19 pandemic, and so was underpowered. Therefore, interpretation must be cautious and results considered inconclusive, indicating the need for a further randomized trial. TRIAL REGISTRATION: ClinicalTrials.gov, https://clinicaltrials.gov, NCT03708718.


Assuntos
COVID-19 , Esclerodermia Difusa , Humanos , Esclerodermia Difusa/tratamento farmacológico , Resultado do Tratamento , Pandemias , Método Duplo-Cego , Prednisolona/efeitos adversos , Dor
2.
Lancet Oncol ; 22(5): 690-701, 2021 05.
Artigo em Inglês | MEDLINE | ID: mdl-33798493

RESUMO

BACKGROUND: Advanced biliary tract cancer has a poor prognosis. Cisplatin and gemcitabine is the standard first-line chemotherapy regimen, but no robust evidence is available for second-line chemotherapy. The aim of this study was to determine the benefit derived from second-line FOLFOX (folinic acid, fluorouracil, and oxaliplatin) chemotherapy in advanced biliary tract cancer. METHODS: The ABC-06 clinical trial was a phase 3, open-label, randomised trial done in 20 sites with expertise in managing biliary tract cancer across the UK. Adult patients (aged ≥18 years) who had histologically or cytologically verified locally advanced or metastatic biliary tract cancer (including cholangiocarcinoma and gallbladder or ampullary carcinoma) with documented radiological disease progression to first-line cisplatin and gemcitabine chemotherapy and an Eastern Cooperative Oncology Group performance status of 0-1 were randomly assigned (1:1) centrally to active symptom control (ASC) and FOLFOX or ASC alone. FOLFOX chemotherapy was administered intravenously every 2 weeks for a maximum of 12 cycles (oxaliplatin 85 mg/m2, L-folinic acid 175 mg [or folinic acid 350 mg], fluorouracil 400 mg/m2 [bolus], and fluorouracil 2400 mg/m2 as a 46-h continuous intravenous infusion). Randomisation was done following a minimisation algorithm using platinum sensitivity, serum albumin concentration, and stage as stratification factors. The primary endpoint was overall survival, assessed in the intention-to-treat population. Safety was also assessed in the intention-to-treat population. The study is complete and the final results are reported. This trial is registered with ClinicalTrials.gov, NCT01926236, and EudraCT, 2013-001812-30. FINDINGS: Between March 27, 2014, and Jan 4, 2018, 162 patients were enrolled and randomly assigned to ASC plus FOLFOX (n=81) or ASC alone (n=81). Median follow-up was 21·7 months (IQR 17·2-30·8). Overall survival was significantly longer in the ASC plus FOLFOX group than in the ASC alone group, with a median overall survival of 6·2 months (95% CI 5·4-7·6) in the ASC plus FOLFOX group versus 5·3 months (4·1-5·8) in the ASC alone group (adjusted hazard ratio 0·69 [95% CI 0·50-0·97]; p=0·031). The overall survival rate in the ASC alone group was 35·5% (95% CI 25·2-46·0) at 6 months and 11·4% (5·6-19·5) at 12 months, compared with 50·6% (39·3-60·9) at 6 months and 25·9% (17·0-35·8) at 12 months in the ASC plus FOLFOX group. Grade 3-5 adverse events were reported in 42 (52%) of 81 patients in the ASC alone group and 56 (69%) of 81 patients in the ASC plus FOLFOX group, including three chemotherapy-related deaths (one each due to infection, acute kidney injury, and febrile neutropenia). The most frequently reported grade 3-5 FOLFOX-related adverse events were neutropenia (ten [12%] patients), fatigue or lethargy (nine [11%] patients), and infection (eight [10%] patients). INTERPRETATION: The addition of FOLFOX to ASC improved median overall survival in patients with advanced biliary tract cancer after progression on cisplatin and gemcitabine, with a clinically meaningful increase in 6-month and 12-month overall survival rates. To our knowledge, this trial is the first prospective, randomised study providing reliable, high-quality evidence to allow an informed discussion with patients of the potential benefits and risks from second-line FOLFOX chemotherapy in advanced biliary tract cancer. Based on these findings, FOLFOX should become standard-of-care chemotherapy in second-line treatment for advanced biliary tract cancer and the reference regimen for further clinical trials. FUNDING: Cancer Research UK, StandUpToCancer, AMMF (The UK Cholangiocarcinoma Charity), and The Christie Charity, with additional funding from The Cholangiocarcinoma Foundation and the Conquer Cancer Foundation Young Investigator Award for translational research.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Neoplasias do Sistema Biliar/tratamento farmacológico , Adulto , Idoso , Idoso de 80 Anos ou mais , Protocolos de Quimioterapia Combinada Antineoplásica/efeitos adversos , Neoplasias do Sistema Biliar/mortalidade , Feminino , Fluoruracila/efeitos adversos , Fluoruracila/uso terapêutico , Humanos , Leucovorina/efeitos adversos , Leucovorina/uso terapêutico , Masculino , Pessoa de Meia-Idade , Compostos Organoplatínicos/efeitos adversos , Compostos Organoplatínicos/uso terapêutico , Estudos Prospectivos
5.
Clin Cancer Res ; 29(14): 2602-2611, 2023 07 14.
Artigo em Inglês | MEDLINE | ID: mdl-36799931

RESUMO

PURPOSE: A single maintenance course of a PARP inhibitor (PARPi) improves progression-free survival (PFS) in germline BRCA1/2-mutant high-grade serous ovarian cancer (gBRCAm-HGSOC). The feasibility of a second maintenance course of PARPi was unknown. PATIENTS AND METHODS: Phase II trial with two entry points (EP1, EP2). Patients were recruited prior to rechallenge platinum. Patients with relapsed, gBRCAm-HGSOC were enrolled at EP1 if they were PARPi-naïve. Patients enrolled at EP2 had received their first course of olaparib prior to trial entry. EP1 patients were retreated with olaparib after RECIST complete/partial response (CR/PR) to platinum. EP2 patients were retreated with olaparib ± cediranib after RECIST CR/PR/stable disease to platinum and according to the platinum-free interval. Co-primary outcomes were the proportion of patients who received a second course of olaparib and the proportion who received olaparib retreatment for ≥6 months. Functional homologous recombination deficiency (HRD), somatic copy-number alteration (SCNA), and BRCAm reversions were investigated in tumor and liquid biopsies. RESULTS: Twenty-seven patients were treated (EP1 = 17, EP2 = 10), and 19 were evaluable. Twelve patients (63%) received a second course of olaparib and 4 received olaparib retreatment for ≥6 months. Common grade ≥2 adverse events during olaparib retreatment were anemia, nausea, and fatigue. No cases of MDS/AML occurred. Mean duration of olaparib treatment and retreatment differed (12.1 months vs. 4.4 months; P < 0.001). Functional HRD and SCNA did not predict PFS. A BRCA2 reversion mutation was detected in a post-olaparib liquid biopsy. CONCLUSIONS: A second course of olaparib can be safely administered to women with gBRCAm-HGSOC but is only modestly efficacious. See related commentary by Gonzalez-Ochoa and Oza, p. 2563.


Assuntos
Antineoplásicos , Cistadenocarcinoma Seroso , Neoplasias Ovarianas , Humanos , Feminino , Inibidores de Poli(ADP-Ribose) Polimerases/efeitos adversos , Proteína BRCA1/genética , Proteína BRCA2/genética , Neoplasias Ovarianas/tratamento farmacológico , Neoplasias Ovarianas/genética , Neoplasias Ovarianas/patologia , Carcinoma Epitelial do Ovário/tratamento farmacológico , Carcinoma Epitelial do Ovário/genética , Antineoplásicos/uso terapêutico , Ftalazinas/efeitos adversos , Cistadenocarcinoma Seroso/tratamento farmacológico , Cistadenocarcinoma Seroso/genética , Recidiva Local de Neoplasia/tratamento farmacológico , Recidiva Local de Neoplasia/genética , Recidiva Local de Neoplasia/mortalidade
6.
Eur J Oncol Nurs ; 60: 102171, 2022 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-35952460

RESUMO

PURPOSE: Chemotherapy-induced peripheral neuropathy (CIPN) is a dose limiting toxicity posing a major clinical challenge for managing patients receiving specific chemotherapy regimens (e.g., Taxanes). There is a growing body of literature suggesting acupuncture can improve CIPN symptoms. The purpose of the ACUFOCIN trial was to collect preliminary data on the safety, feasibility, acceptability and initial effectiveness of acupuncture as a treatment for CIPN, comparing use of acupuncture plus standard care (Acupuncture) against standard care alone (Control). METHOD: At a tertiary cancer centre, a pragmatic, randomised, parallel group design study was used to investigate the effectiveness of a 10-week course of acupuncture. Participants experiencing CIPN of ≥ Grade II, recording a 'Most Troublesome' CIPN symptom score of ≥3 using the "Measure Yourself Medical Outcome Profile" (MYMOP 2), were randomised to 'Acupuncture' or 'Control' arms. Clinicians were blinded to allocated groups, however as it was not possible to blind participants, it cannot be guaranteed they did not disclose study allocation within their clinic assessments. The primary outcome measure was the number of patients reporting a ≥ 2-point improvement (success) in their MYMOP2 score at week 10. 100 participants (120 to allow for attrition) were required for a hypothesised improvement in success proportions from 30% to 55% using a primary analysis model with logistic regression adjusted for stratification factors and baseline MYMOP2 scores. Feasibility and acceptability of study design was addressed through percentage return of primary outcome, retention rate and a nested qualitative study. RESULTS: Primary MYMOP2 outcome data at week 10 was available for 108/120 randomised participants; this is greater than the 100 participants required to adequately power the study. There were 36/53 (68%) successes in 'Acupuncture' compared to 18/55 (33%) in 'Control'. Beneficial effects were seen in the secondary outcome data, including clinicians' grading of neuropathy, EORTC, QLQ-CIPN20, QLQ-C30 summary scores and patient reported pain scores. There were no serious adverse events reported within the study and only 16 acupuncture associated events, none of which required intervention. CONCLUSION: A 10-week course of acupuncture resulted in measurable improvement in participants symptoms of CIPN. The results warrant further investigation.


Assuntos
Terapia por Acupuntura , Antineoplásicos , Doenças do Sistema Nervoso Periférico , Terapia por Acupuntura/efeitos adversos , Terapia por Acupuntura/métodos , Antineoplásicos/efeitos adversos , Humanos , Doenças do Sistema Nervoso Periférico/induzido quimicamente , Doenças do Sistema Nervoso Periférico/diagnóstico , Doenças do Sistema Nervoso Periférico/terapia , Qualidade de Vida , Projetos de Pesquisa , Taxoides/efeitos adversos
7.
J Scleroderma Relat Disord ; 6(2): 146-153, 2021 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-34222671

RESUMO

BACKGROUND: Many of the painful, disabling features of early diffuse cutaneous systemic sclerosis have an inflammatory component and are potentially treatable with corticosteroid therapy. These features include painful and itchy skin, fatigue and musculoskeletal involvement. Yet many clinicians are understandably reluctant to prescribe corticosteroids because of the concern that these are a risk factor for scleroderma renal crisis. The aim of PRedSS (PRednisolone in early diffuse cutaneous Systemic Sclerosis) is to evaluate the efficacy and safety of moderate dose prednisolone in patients with early diffuse cutaneous systemic sclerosis, specifically whether moderate dose prednisolone is (a) effective in terms of reducing pain and disability, and improving skin score and (b) safe, with particular reference to renal function. METHODS: PRedSS is a Phase II, multicentre, double-blind randomised controlled trial which aims to recruit 72 patients with early diffuse cutaneous systemic sclerosis. Patients are randomised to receive either prednisolone (dosage approximately 0.3 mg/kg) or placebo therapy for 6 months. The two co-primary outcome measures are the difference in mean Health Assessment Questionnaire Disability Index at 3 months and the difference in modified Rodnan skin score at 3 months. Secondary outcome measures include patient reported outcome measures of itch, hand function, anxiety and depression, and helplessness. RESULTS: Recruitment commenced in December 2017 and after a slow start (due to delays in opening centres) 25 patients have now been recruited. CONCLUSION: PRedSS should help to answer the question as to whether clinicians should or should not prescribe prednisolone in early diffuse cutaneous systemic sclerosis.

8.
Int J Radiat Oncol Biol Phys ; 109(5): 1341-1348, 2021 04 01.
Artigo em Inglês | MEDLINE | ID: mdl-33232772

RESUMO

PURPOSE: Not all patients with stage III non-small cell lung cancer (NSCLC) are suitable for concurrent chemoradiation therapy (CRT). Local failure rate is high for sequential concurrent CRT. As such, there is a rationale for treatment intensification. METHODS AND MATERIALS: Isotoxic intensity modulated radiation therapy (IMRT) is a multicenter feasibility study that combines different intensification strategies including hyperfractionation, acceleration, and dose escalation facilitated by IMRT. Patients with unresectable stage III NSCLC, Eastern Cooperative Oncology Group (ECOG) performance status (PS) of 0 to 2, and unsuitable for concurrent CRT were recruited. A minimum of 2 cycles of platinum-based chemotherapy was compulsory before starting radiation therapy (RT). Radiation dose was increased until a maximum dose of 79.2 Gy was reached or 1 or more of the organs at risk met predefined constraints. RT was delivered in 1.8-Gy fractions twice daily, and an RT quality assurance program was implemented. The primary objective was the delivery of isotoxic IMRT to a dose >60 Gy equivalent dose in 2-Gy fractions (EQD2 assuming an α/ß ratio of 10 Gy for acute reacting tissues). RESULTS: Thirty-seven patients were recruited from 7 UK centers. Median age was 69.9 years (range, 46-86 years). The male-to-female ratio was 17:18. ECOG PS was 0 to 5 in 14.2% of patients; PS was 1 to 27 in 77.1% of patients; PS was 2 to 3 in 8.6% of patients. Stage IIIA:IIIB ratio was 22:13 (62.9%:37.1%). Of 37 patients, 2 (5.4%) failed to achieve EQD2 > 60 Gy. Median prescribed tumor dose was 77.4 Gy (range, 61.2-79.2 Gy). A maximum dose of 79.2Gy was achieved in 14 patients (37.8%). Grade 3 esophagitis was reported in 2 patients, and no patients developed grade 3 to 4 pneumonitis. There were 3 grade 5 events: acute radiation pneumonitis, bronchopulmonary hemorrhage, and acute lung infection. Median follow-up at time of analysis was 25.4 months (range, 8.0-44.2) months for 11 of 35 survivors. The median survival was 18.1 months (95% confidence interval [CI], 13.9-30.6), 2-year overall survival was 33.6% (95% CI, 17.9-50.1), and progression-free survival was 23.9% (95% CI, 11.3-39.1). CONCLUSIONS: Isotoxic IMRT is a well-tolerated and feasible approach to treatment intensification.


Assuntos
Carcinoma Pulmonar de Células não Pequenas/radioterapia , Neoplasias Pulmonares/radioterapia , Radioterapia de Intensidade Modulada/métodos , Idoso , Idoso de 80 Anos ou mais , Carcinoma Pulmonar de Células não Pequenas/mortalidade , Carcinoma Pulmonar de Células não Pequenas/patologia , Quimiorradioterapia/efeitos adversos , Contraindicações , Fracionamento da Dose de Radiação , Esofagite/etiologia , Esofagite/patologia , Estudos de Viabilidade , Feminino , Humanos , Neoplasias Pulmonares/mortalidade , Neoplasias Pulmonares/patologia , Masculino , Pessoa de Meia-Idade , Órgãos em Risco/efeitos da radiação , Compostos de Platina/administração & dosagem , Medicina de Precisão/métodos , Estudos Prospectivos , Lesões por Radiação/complicações , Pneumonite por Radiação , Radioterapia Guiada por Imagem , Radioterapia de Intensidade Modulada/efeitos adversos , Radioterapia de Intensidade Modulada/mortalidade , Reino Unido
9.
Clin Endocrinol (Oxf) ; 71(4): 529-34, 2009 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-19226261

RESUMO

BACKGROUND: TSH secretion in hypopituitary patients may be decreased due to TSH deficiency but it also remains under feedback inhibition by free thyroxine (fT4). We propose a TSH index (TSHI), as 'fT4-adjusted TSH', that corrects for any physiological TSH suppression, to provide a true estimate of pituitary thyrotroph function and any pathological pituitary suppression. METHODS: A total of 9519 thyroid function tests (TFTs) (Bayer Immuno-1) in 4064 patients of our institution were examined, including 444 patients investigated for hypopituitarism. Based on the physiological log-linear relationship between fT4 and TSH, we estimated the amount of feedback-induced change in log TSH per change in fT4, which allowed the extrapolation of log TSH to a fixed fT4 of 0, defining the TSHI. TSHIs were compared with other measures of pituitary function. RESULTS: Feedback inhibition was estimated to cause a 0.1345 decrease in log TSH (mU/l) for 1 pmol/l increase in fT4 concentration, therefore TSHI = log TSH + 0.1345 x fT4. Patients with lower peak-stimulated GH and cortisol concentrations had a significantly lower TSHI (P < 0.0001). TSHIs measured before pituitary stimulation tests predicted highly significantly the risk of test failure (P = 0.0002). Of all potential fT4-TSH combinations within the current reference ranges, 21.9% were identified as abnormal on the basis of the TSHI. CONCLUSION: The TSHI provides an accurate estimate of the severity of pituitary dysfunction in hypopituitary patients based on simple TFTs. It predicts the probability of pituitary stimulation test failure and extends the diagnosis of TSH deficiency into areas of the normal TFT reference ranges.


Assuntos
Hipopituitarismo/diagnóstico , Testes de Função Tireóidea/métodos , Tireotropina , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Hipopituitarismo/fisiopatologia , Masculino , Pessoa de Meia-Idade , Valores de Referência , Testes de Função Tireóidea/normas , Tireotrofos/fisiologia , Tireotropina/sangue , Tiroxina/sangue
10.
Clin Cancer Res ; 25(8): 2424-2432, 2019 04 15.
Artigo em Inglês | MEDLINE | ID: mdl-30563932

RESUMO

PURPOSE: Endometrioid endometrial cancer is strongly associated with obesity and insulin resistance. Metformin, an insulin sensitizer, reduces endometrial tumor growth in vitro. Presurgical window studies allow rapid in vivo assessment of antitumor activity. Previous window studies found metformin reduced endometrial cancer proliferation but these lacked methodological rigor. PREMIUM measured the anti-proliferative effect of metformin in vivo using a robust window study design.Patients and Methods: A multicenter, double-blind, placebo-controlled trial randomized women with atypical hyperplasia or endometrioid endometrial cancer to receive metformin (850 mg daily for 3 days, and twice daily thereafter) or placebo for 1 to 5 weeks until surgery. The primary outcome was posttreatment IHC expression of Ki-67. Secondary outcomes investigated the effect of metformin on markers of the PI3K-Akt-mTOR and insulin signaling pathways and obesity. RESULTS: Eighty-eight women received metformin (n = 45) or placebo (n = 43) and completed treatment. There was no overall difference in posttreatment Ki-67 between the metformin and placebo arms, in an ANCOVA analysis adjusting for baseline Ki-67 expression (mean difference -0.57%; 95% CI, -7.57%-6.42%; P = 0.87). Metformin did not affect expression of markers of the PI3K-Akt-mTOR or insulin signaling pathways, and did not result in weight loss. CONCLUSIONS: Short-term treatment with standard diabetic doses of metformin does not reduce tumor proliferation in women with endometrioid endometrial cancer awaiting hysterectomy. This study does not support a biological effect of metformin in endometrial cancer and casts doubt on its potential application in the primary and adjuvant treatment settings.


Assuntos
Hipoglicemiantes/administração & dosagem , Metformina/administração & dosagem , Cuidados Pré-Operatórios , Neoplasias Uterinas/terapia , Adulto , Idoso , Idoso de 80 Anos ou mais , Biomarcadores Tumorais , Proliferação de Células/efeitos dos fármacos , Feminino , Humanos , Hipoglicemiantes/efeitos adversos , Insulina/metabolismo , Metformina/efeitos adversos , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Fosfatidilinositol 3-Quinases/metabolismo , Prognóstico , Proteínas Proto-Oncogênicas c-akt/metabolismo , Transdução de Sinais , Serina-Treonina Quinases TOR/metabolismo , Resultado do Tratamento , Neoplasias Uterinas/diagnóstico , Neoplasias Uterinas/metabolismo , Neoplasias Uterinas/mortalidade
11.
J Clin Oncol ; 37(14): 1200-1208, 2019 05 10.
Artigo em Inglês | MEDLINE | ID: mdl-30920878

RESUMO

PURPOSE: Prophylactic irradiation to the chest wall after diagnostic or therapeutic procedures in patients with malignant pleural mesothelioma (MPM) has been a widespread practice across Europe, although the efficacy of this treatment is uncertain. In this study, we aimed to determine the efficacy of prophylactic radiotherapy in reducing the incidence of chest wall metastases (CWM) after a procedure in MPM. METHODS: After undergoing a chest wall procedure, patients with MPM were randomly assigned to receive prophylactic radiotherapy (within 42 days of the procedure) or no radiotherapy. Open thoracotomies, needle biopsies, and indwelling pleural catheters were excluded. Prophylactic radiotherapy was delivered at a dose of 21 Gy in three fractions over three consecutive working days, using a single electron field adapted to maximize coverage of the tract from skin surface to pleura. The primary outcome was the incidence of CWM within 6 months from random assignment, assessed in the intention-to-treat population. Stratification factors included epithelioid histology and intention to give chemotherapy. RESULTS: Between July 30, 2012, and December 12, 2015, 375 patients were recruited from 54 centers and randomly assigned to receive prophylactic radiotherapy (n = 186) or no prophylactic radiotherapy (n = 189). Participants were well matched at baseline. No significant difference was seen in the incidence of CWM at 6 months between the prophylactic radiotherapy and no radiotherapy groups (no. [%]: 6 [3.2] v 10 [5.3], respectively; odds ratio, 0.60; 95% CI, 0.17 to 1.86; P = .44). Skin toxicity was the most common radiotherapy-related adverse event in the prophylactic radiotherapy group, with 96 patients (51.6%) receiving grade 1; 19 (10.2%), grade 2; and 1 (0.5%) grade 3 radiation dermatitis (Common Terminology Criteria for Adverse Events, version 4.0). CONCLUSION: There is no role for the routine use of prophylactic irradiation to chest wall procedure sites in patients with MPM.


Assuntos
Neoplasias Pulmonares/radioterapia , Mesotelioma/radioterapia , Neoplasias Pleurais/radioterapia , Neoplasias Torácicas/prevenção & controle , Neoplasias Torácicas/secundário , Parede Torácica/efeitos da radiação , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Neoplasias Pulmonares/patologia , Masculino , Mesotelioma/patologia , Mesotelioma Maligno , Pessoa de Meia-Idade , Neoplasias Pleurais/patologia , Neoplasias Torácicas/radioterapia , Parede Torácica/patologia
12.
Int J Radiat Oncol Biol Phys ; 69(1): 133-40, 2007 Sep 01.
Artigo em Inglês | MEDLINE | ID: mdl-17459603

RESUMO

PURPOSE: Vaults are multi-subunit structures that may be involved in nucleo-cytoplasmic transport, with the major vault protein (MVP or lung resistance-related protein [LRP]) being the main component. The MVP gene is located on chromosome 16 close to the multidrug resistance-associated protein and protein kinase c-beta genes. The role of MVP in cancer drug resistance has been demonstrated in various cell lines as well as in ovarian carcinomas and acute myeloid leukemia, but nothing is known about its possible role in radiation resistance. Our aim was to examine this in head-and-neck squamous cell carcinoma (HNSCC). METHODS AND MATERIALS: Archived biopsy material was obtained for 78 patients with squamous cell carcinoma of the oropharynx who received primary radiotherapy with curative intent. Immunohistochemistry was used to detect MVP expression. Locoregional failure and cancer-specific survival were estimated using cumulative incidence and Cox multivariate analyses. RESULTS: In a univariate and multivariate analysis, MVP expression was strongly associated with both locoregional failure and cancer-specific survival. After adjustment for disease site, stage, grade, anemia, smoking, alcohol, gender, and age, the estimated hazard ratio for high MVP (2/3) compared with low (0/1) was 4.98 (95% confidence interval, 2.17-11.42; p = 0.0002) for locoregional failure and 4.28 (95% confidence interval, 1.85-9.95; p = 0.001) for cancer-specific mortality. CONCLUSION: These data are the first to show that MVP may be a useful prognostic marker associated with radiotherapy resistance in a subgroup of patients with HNSCC.


Assuntos
Carcinoma de Células Escamosas/radioterapia , Proteínas de Neoplasias/metabolismo , Neoplasias Orofaríngeas/radioterapia , Tolerância a Radiação , Partículas de Ribonucleoproteínas em Forma de Abóbada/metabolismo , Adulto , Idoso , Idoso de 80 Anos ou mais , Análise de Variância , Carcinoma de Células Escamosas/metabolismo , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Proteínas Associadas à Resistência a Múltiplos Medicamentos/genética , Neoplasias Orofaríngeas/metabolismo , Prognóstico , Estudos Retrospectivos , Falha de Tratamento
13.
Oncotarget ; 7(3): 2596-610, 2016 Jan 19.
Artigo em Inglês | MEDLINE | ID: mdl-26595803

RESUMO

Therapy resistance is one of the major impediments to successful cancer treatment. In breast cancer, a small subpopulation of cells with stem cell features, named breast cancer stem cells (BCSC), is responsible for metastasis and recurrence of the tumor. BCSC have the unique ability to grow under non-adherent conditions in "mammospheres". To prevent breast cancer recurrence and metastasis it will be crucial to eradicate BCSC.We used shRNA genetic screening to identify genes that upon knockdown enhance mammosphere formation in breast cancer cells. By integration of these results with gene expression profiles of mammospheres and NOTCH-activated cells, we identified FOXO3A. Modulation of FOXO3A activity results in a change in mammosphere formation, expression of mammary stem cell markers and breast cancer initiating potential. Importantly, lack of FOXO3A expression in breast cancer patients is associated with increased recurrence rate. Our findings provide evidence for a role for FOXO3A downstream of NOTCH and AKT that may have implications for therapies targeting BCSCs.


Assuntos
Neoplasias da Mama/patologia , Transformação Celular Neoplásica/patologia , Proteína Forkhead Box O3/metabolismo , Glândulas Mamárias Humanas/patologia , Células-Tronco Neoplásicas/patologia , Fosfatidilinositol 3-Quinases/metabolismo , Proteínas Proto-Oncogênicas c-akt/metabolismo , Animais , Western Blotting , Neoplasias da Mama/genética , Neoplasias da Mama/metabolismo , Proliferação de Células , Transformação Celular Neoplásica/metabolismo , Feminino , Proteína Forkhead Box O3/antagonistas & inibidores , Proteína Forkhead Box O3/genética , Perfilação da Expressão Gênica , Regulação Neoplásica da Expressão Gênica , Genômica , Humanos , Glândulas Mamárias Humanas/metabolismo , Camundongos , Camundongos Endogâmicos NOD , Camundongos SCID , Recidiva Local de Neoplasia/genética , Recidiva Local de Neoplasia/metabolismo , Recidiva Local de Neoplasia/patologia , Células-Tronco Neoplásicas/metabolismo , Fosfatidilinositol 3-Quinases/genética , Proteínas Proto-Oncogênicas c-akt/genética , RNA Mensageiro/genética , RNA Interferente Pequeno/genética , Reação em Cadeia da Polimerase em Tempo Real , Reação em Cadeia da Polimerase Via Transcriptase Reversa , Células Tumorais Cultivadas
14.
Int J Radiat Oncol Biol Phys ; 59(1): 197-207, 2004 May 01.
Artigo em Inglês | MEDLINE | ID: mdl-15093917

RESUMO

PURPOSE: To investigate whether delivering an increased radiation dose to the tumor-bearing region of the bladder alone would improve local disease control without increasing treatment toxicity. METHODS AND MATERIALS: A total of 149 patients with unifocal T2-T3N0M0 bladder carcinoma were randomized between whole bladder conformal radiotherapy (WBRT, 52.5 Gy in 20 fractions, n = 60) and partial bladder conformal RT (PBRT) to tumor alone with 1.5-cm margins within either 4 weeks (PBRT4, 57.5 Gy in 20 fractions, n = 44) or 3 weeks (PBRT3, 55 Gy in 16 fractions, n = 45). The response was assessed cystoscopically after 4 months. RESULTS: The 5-year overall and CFS rate was 58% and 47%, respectively, for the whole population. The CR rate was 75% for WBRT, 80% for PBRT4, and 71% for PBRT3 (p = 0.6), with a 5-year local control rate of 58%, 59%, and 34%, respectively (p = 0.18). Solitary new tumors arose within the bladder, outside the irradiated volume, in 6 (7%) of 89 patients who underwent PBRT. The 5-year overall survival and cystectomy-free survival rate was 61% and 49% for WBRT, 60% and 50% for PBRT4, and 51% and 41% for PBRT3 (p = 0.81 and p = 0.59). The treatment toxicity was mild and equivalent across the three trial arms. CONCLUSION: The reduction in treatment volume allowed delivery of an increased radiation dose without a reduction in local tumor control or the development of excess toxicity. However, this dose-escalated partial bladder approach did not result in significantly improved overall survival.


Assuntos
Carcinoma de Células Escamosas/radioterapia , Carcinoma de Células de Transição/radioterapia , Radioterapia Conformacional/métodos , Neoplasias da Bexiga Urinária/radioterapia , Adulto , Idoso , Idoso de 80 Anos ou mais , Carcinoma de Células Escamosas/mortalidade , Carcinoma de Células Escamosas/patologia , Carcinoma de Células de Transição/mortalidade , Carcinoma de Células de Transição/patologia , Cistoscopia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Recidiva Local de Neoplasia/mortalidade , Recidiva Local de Neoplasia/cirurgia , Estadiamento de Neoplasias , Estudos Prospectivos , Lesões por Radiação/classificação , Dosagem Radioterapêutica , Indução de Remissão , Terapia de Salvação , Neoplasias da Bexiga Urinária/mortalidade , Neoplasias da Bexiga Urinária/patologia
15.
J Pain Symptom Manage ; 47(1): 12-25, 2014 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-23602325

RESUMO

CONTEXT: Both positive and negative results have been reported in the literature from the use of acupressure at the P6 point, providing evidence of highly suggestive but not conclusive results. OBJECTIVES: To clarify whether acupressure is effective in the management of chemotherapy-related nausea and vomiting. METHODS: A randomized, three-group, sham-controlled trial was designed. Patients with cancer receiving chemotherapy were randomized to receive standardized antiemetics and acupressure wristbands, sham acupressure wristbands, or antiemetics alone. Primary outcome assessment (nausea) was carried out daily for seven days per chemotherapy cycle over four cycles. Secondary outcomes included vomiting, psychological distress, and quality of life. RESULTS: Five hundred patients were randomized. Primary outcome analysis (nausea in Cycle 1) revealed no statistically significant differences between the three groups, although nausea levels in the proportion of patients using wristbands (both real and sham) were somewhat lower than those in the proportion of patients using antiemetics-only group. Adjusting for gender, age, and emetic risk of chemotherapy, the odds ratio of lower nausea experience was 1.18 and 1.42 for the acupressure and sham acupressure groups, respectively. A gender interaction effect was evident (P = 0.002). No significant differences were detected in relation to vomiting, anxiety, and quality-of-life measures. CONCLUSION: No clear recommendations can be made about the use of acupressure wristbands in the management of chemotherapy-related nausea and vomiting as results did not reach statistical significance. However, the study provided evidence of encouraging signals in relation to improved nausea experience and warrants further consideration in both practice and further clinical trials. TRIAL REGISTRATION: This trial is registered with the ISRCT register, number ISRCTN87604299.


Assuntos
Acupressão/métodos , Antieméticos/uso terapêutico , Antineoplásicos/efeitos adversos , Náusea/induzido quimicamente , Náusea/terapia , Vômito/terapia , Pontos de Acupuntura , Adolescente , Adulto , Antineoplásicos/uso terapêutico , Ansiedade/terapia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Cooperação do Paciente , Qualidade de Vida , Índice de Gravidade de Doença , Fatores Sexuais , Resultado do Tratamento , Vômito/induzido quimicamente , Punho , Adulto Jovem
16.
J Clin Oncol ; 32(3): 212-8, 2014 Jan 20.
Artigo em Inglês | MEDLINE | ID: mdl-24297953

RESUMO

PURPOSE: We report an international, multicenter phase II trial to evaluate the efficacy and toxicity of fractionated (90)Y-ibritumomab tiuxetan ((90)Y-IT) as initial therapy of follicular lymphoma (FL). PATIENTS AND METHODS: A total of 74 patients, with a median age of 61 years (range, 28 to 80 years), were recruited requiring initial therapy by Groupe d'Etude des Lymphomes Folliculaires (GELF)/British National Lymphoma Investigation (BNLI) criteria. Among them, 78% had stage III-IV disease, 32% intermediate, and 44% high-risk (according to FL International Prognostic Index). Treatment consisted of two doses of (90)Y-IT (11.1 MBq/kg) administered 8 to 12 weeks apart. Patients with more than 20% lymphoma infiltration of bone marrow (BM) received one infusion per week for 4 consecutive weeks of rituximab (375 mg/m(2)) and proceeded to fractionated radioimmunotherapy (RIT) only if a repeat BM biopsy demonstrated clearing of lymphoma to less than 20% involvement. The primary end point was end of treatment response of the intention-to-treat population. Secondary objectives were safety and progression-free survival (PFS). RESULTS: Initial overall response rate (ORR) was 94.4% (68 of 72 patients) with combined complete response (CR/CRu) of 58.3% (42 of 72 patients). Nine patients subsequently improved response making an ORR of 95.8% (69 of 72 patients) and CR/CRu of 69.4% (50 of 72 patients). At a median follow-up of 3.1 years (range, 0.2 to 5.2 years) estimated 3-year PFS is 58%, treatment-free survival 66%, and overall survival 95%. Median PFS is 40.2 months. Thirty patients have experienced disease progression and 24 have required further treatment. The treatment was well tolerated with few (2.8%) grade 3 or 4 infectious episodes or adverse events and manageable hematologic toxicity. CONCLUSION: Fractionated RIT using (90)Y-IT is an effective initial treatment for advanced-stage FL in patients with higher tumor burden requiring treatment.


Assuntos
Anticorpos Monoclonais/uso terapêutico , Linfoma Folicular/radioterapia , Radioisótopos de Ítrio/uso terapêutico , Adulto , Idoso , Fracionamento da Dose de Radiação , Feminino , Humanos , Cooperação Internacional , Linfoma Folicular/patologia , Masculino , Pessoa de Meia-Idade , Radioimunoterapia/métodos , Indução de Remissão , Resultado do Tratamento
17.
Br J Oral Maxillofac Surg ; 50(3): 221-6, 2012 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-21636188

RESUMO

Our aim was to investigate the effect of active manuka honey on radiation-induced mucositis. A total of 131 patients diagnosed with head and neck cancer who were having radiotherapy to the oral cavity or oropharyngeal area were recruited into the study, and were randomly allocated to take either manuka honey or placebo (golden syrup) 20 ml 4 times daily for 6 weeks. Mucositis was assessed according to the Radiation Therapy Oncology Group (RTOG) scale at baseline, weekly during radiotherapy, and twice weekly thereafter until the mucositis resolved. The patient's weight was recorded at the same time as the mucositis was assessed. Throat swabs to identify bacterial or fungal infections were taken at baseline, and during and after radiotherapy. There was no significant difference between honey and golden syrup in their effects on mucositis. Active manuka honey did not improve mucositis, but both the honey and the syrup seemed to be associated with a reduction in bacterial infections. Compliance was a problem after the onset of mucositis, which may have affected the findings.


Assuntos
Mel , Leptospermum , Lesões por Radiação/terapia , Estomatite/terapia , Adulto , Idoso , Idoso de 80 Anos ou mais , Analgésicos/uso terapêutico , Infecções Bacterianas/prevenção & controle , Carcinoma de Células Escamosas/radioterapia , Quimioterapia Adjuvante , Método Duplo-Cego , Nutrição Enteral , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Boca/efeitos da radiação , Neoplasias Bucais/radioterapia , Micoses/prevenção & controle , Infecções Oportunistas/microbiologia , Infecções Oportunistas/prevenção & controle , Neoplasias Orofaríngeas/radioterapia , Orofaringe/efeitos da radiação , Cooperação do Paciente , Doenças Faríngeas/microbiologia , Doenças Faríngeas/prevenção & controle , Placebos , Lesões por Radiação/etiologia , Estomatite/etiologia , Resultado do Tratamento , Redução de Peso
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