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1.
Swiss Med Wkly ; 151: w30034, 2021 12 06.
Artigo em Inglês | MEDLINE | ID: mdl-34964579

RESUMO

BACKGROUND: This retrospective study was conducted to: (1) provide more modern data on real-life local management of metastatic rectal cancer; (2) compare therapeutic strategies; and (3) identify prognostic factors of local failure, overall survival and progression-free survival. METHODS: Data about efficacy and acute toxicity were collected. Patients were diagnosed with metastatic rectal cancer between 2004 and 2015, and were treated at least with radiotherapy. Local failure, overall survival and progression-free survival were correlated with patient, tumour and treatment characteristics using univariate and multivariate analyses. RESULTS: Data of 148 consecutive patients with metastatic rectal cancer were analysed. Median follow-up was 19 months. Median overall survival was 16 months. All patients received local radiotherapy, with a median equivalent 2 Gy per fraction dose of 47.7 Gy. Rectal surgery was performed in 97 patients (65.6%). The majority of patients (86/97, 88.7%) received pre-operative chemoradiation. In multivariate analysis, rectal surgery was found to be the only independent predictor of increased overall survival (24.6 vs 7.1 months, p <0.001). Of the patients undergoing surgical treatment, 22.8% presented with significant complications that required a delay of systemic treatment. Grade 3-4 acute radiation therapy-related toxicities were observed in 6.1% of patients, mainly gastrointestinal toxicities (5.4%). CONCLUSION: Rectal surgery was a key predictive factor of increased progression-free survival and overall survival in patients receiving at least local radiotherapy. In our series of real-life patients, local surgery and radiation seemed as well tolerated as reported in selected phase III non-metastatic rectal cancer patients. These data suggested that local management could be beneficial for metastatic rectal cancer patients.


Assuntos
Procedimentos Cirúrgicos do Sistema Digestório , Neoplasias Retais , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Humanos , Recidiva Local de Neoplasia/tratamento farmacológico , Estadiamento de Neoplasias , Prognóstico , Neoplasias Retais/terapia , Estudos Retrospectivos
2.
Br J Radiol ; 94(1121): 20200115, 2021 May 01.
Artigo em Inglês | MEDLINE | ID: mdl-33861141

RESUMO

OBJECTIVES: We aimed at describing and assessing the quality of reporting in all published prospective trials about radiosurgery (SRS) and stereotactic body radiotherapy (SBRT). METHODS: The Medline database was searched for. The reporting of study design, patients' and radiotherapy characteristics, previous and concurrent cancer treatments, acute and late toxicities and assessment of quality of life were collected. RESULTS: 114 articles - published between 1989 and 2019 - were analysed. 21 trials were randomised (18.4%). Randomisation information was unavailable in 59.6% of the publications. Data about randomisation, ITT analysis and whether the study was multicentre or not, had been significantly less reported during the 2010-2019 publication period than before (respectively 29.4% vs 57.4% (p < 0.001), 20.6% vs 57.4% (p < 0.001), 48.5% vs 68.1% (p < 0.001). 89.5% of the articles reported the number of included patients. Information about radiation total dose was available in 86% of cases and dose per fraction in 78.1%. Regarding the method of dose prescription, the prescription isodose was the most reported information (58.8%). The reporting of radiotherapy characteristics did not improve during the 2010 s-2019s. Acute and late high-grade toxicity was reported in 37.7 and 30.7%, respectively. Their reporting decreased in recent period, especially for all-grade late toxicities (p = 0.044). CONCLUSION: It seems necessary to meet stricter specifications to improve the quality of reporting. ADVANCES IN KNOWLEDGE: Our work results in one of the rare analyses of radiosurgery and SBRT publications. Literature must include necessary information to first, ensure treatments can be compared and reproduced and secondly, to permit to decide on new standards of care.


Assuntos
Neoplasias/radioterapia , Editoração/normas , Radiocirurgia/normas , Ensaios Clínicos Fase III como Assunto/estatística & dados numéricos , Humanos , Estudos Multicêntricos como Assunto/estatística & dados numéricos , Estudos Prospectivos , Editoração/estatística & dados numéricos , Editoração/tendências , Qualidade de Vida , Radiocirurgia/efeitos adversos , Radiocirurgia/estatística & dados numéricos , Dosagem Radioterapêutica , Ensaios Clínicos Controlados Aleatórios como Assunto/estatística & dados numéricos , Fatores de Tempo
3.
Sci Rep ; 10(1): 15415, 2020 09 22.
Artigo em Inglês | MEDLINE | ID: mdl-32963332

RESUMO

The aim of this study was to propose a methodology for the assessment of non-inferiority with meta-analysis. Assessment of hypofractionated RT in prostate and breast cancers is used as an illustrative example. Non-inferiority assessment of an experimental treatment versus an active comparator should rely on two elements: (1) an estimation of experimental treatment's effect versus the active comparator based on a meta-analysis of randomized controlled trials and (2) the value of an objective non-inferiority margin. This margin can be defined using the reported effect of active comparator and the percentage of the active comparator's effect that is desired to be preserved. Non-inferiority can then be assessed by comparing the upper bound of the 95% confidence interval of experimental treatment's effect to the value of the objective non-inferiority margin. Application to hypofractionated RT in breast cancer showed that hypofractionated whole breast irradiation (HWBI) appeared to be non-inferior to conventionally fractionated RT for local recurrence. This was not the case for accelerated partial breast irradiation (APBI). Concerning overall survival, non-inferiority could not be claimed for either HWBI or APBI. For prostate cancer, the lack of demonstrated significant superiority of conventional RT versus no RT precluded any conclusion regarding non-inferiority of hypofractionated RT.


Assuntos
Neoplasias da Mama/radioterapia , Neoplasias da Próstata/radioterapia , Feminino , Humanos , Masculino , Recidiva Local de Neoplasia/radioterapia , Hipofracionamento da Dose de Radiação , Ensaios Clínicos Controlados Aleatórios como Assunto
4.
Radiat Oncol ; 15(1): 145, 2020 Jun 08.
Artigo em Inglês | MEDLINE | ID: mdl-32513205

RESUMO

BACKGROUND: Glioblastoma multiforme (GBM) has a poor prognosis despite a multi modal treatment that includes normofractionated radiotherapy. So, various hypofractionated alternatives to normofractionated RT have been tested to improve such prognosis. There is need of systematic review and meta-analysis to analyse the literature properly and maybe generalised the use of hypofractionation. The aim of this study was first, to perform a meta-analysis of all controlled trials testing the impact of hypofractionation on survival without age restriction and secondly, to analyse data from all non-comparative trials testing the impact of hypofractionation, radiosurgery and hypofractionated stereotactic RT in first line. MATERIALS/METHODS: We searched Medline, Embase and Cochrane databases to identify all publications testing the impact of hypofractionation in glioblastoma between 1985 and March 2020. Combined hazard ratio from comparative studies was calculated for overall survival. The impact of study design, age and use of adjuvant temozolomide was explored by stratification. Meta-regressions were performed to determine the impact of prognostic factors. RESULTS: 2283 publications were identified. Eleven comparative trials were included. No impact on overall survival was evidenced (HR: 1.07, 95%CI: 0.89-1.28) without age restriction. The analysis of non-comparative literature revealed heterogeneous outcomes with limited quality of reporting. Concurrent chemotherapy, completion of surgery, immobilization device, isodose of prescription, and prescribed dose (depending on tumour volume) were poorly described. However, results on survival are encouraging and were correlated with the percentage of resected patients and with patients age but not with median dose. CONCLUSIONS: Because few trials were randomized and because the limited quality of reporting, it is difficult to define the place of hypofactionation in glioblastoma. In first line, hypofractionation resulted in comparable survival outcome with the benefit of a shortened duration. The method used to assess hypofractionation needs to be improved.


Assuntos
Neoplasias Encefálicas/mortalidade , Neoplasias Encefálicas/radioterapia , Glioblastoma/mortalidade , Glioblastoma/radioterapia , Radiocirurgia/métodos , Humanos , Hipofracionamento da Dose de Radiação , Radiocirurgia/mortalidade , Resultado do Tratamento
5.
J Clin Epidemiol ; 124: 24-33, 2020 08.
Artigo em Inglês | MEDLINE | ID: mdl-32298778

RESUMO

OBJECTIVES: An unexpected promising effect of low molecular weight heparins (LMWHs) on survival in patients with cancer was observed in early trials in post hoc subgroup analyses but not found in more recent trials. To highlight a possible regression over time toward the lack of the antitumoral effect of LMWHs, we performed a cumulative meta-analysis of survival data from randomized controlled trials (RCTs). STUDY DESIGN AND SETTING: Medical databases were searched to identify RCTs comparing, in patients with cancer, LMWHs with placebo or no treatment in patients free of venous thromboembolism (VTE), or to vitamin K antagonists in patients who experienced an acute VTE in overall survival. The cumulative hazard ratio (HR) was estimated after each study inclusion in chronological order. RESULTS: Twenty-three studies (12,970 patients) were included. The cumulative meta-analysis of the earlier trials showed a significant improvement in overall survival with LMWHs. This apparent benefit then gradually regressed over time toward an absence of the effect of LMWHs on survival (HR: 0.98 [95% confidence interval, 0.93; 1.03]). CONCLUSION: Despite supportive experimental data and early clinical findings, the promising antitumoral effect of LMWHs in patients with cancer gradually vanished over time toward a lack of impact on overall survival. This result suggests 'p-hacking' and selective reporting of the positive results from post hoc subgroup analyses in the early studies.


Assuntos
Anticoagulantes/uso terapêutico , Heparina de Baixo Peso Molecular/uso terapêutico , Neoplasias/complicações , Tromboembolia Venosa/complicações , Tromboembolia Venosa/prevenção & controle , Humanos , Ensaios Clínicos Controlados Aleatórios como Assunto , Análise de Sobrevida , Resultado do Tratamento
6.
Bull Cancer ; 107(2): 244-253, 2020 Feb.
Artigo em Francês | MEDLINE | ID: mdl-31864665

RESUMO

Stereotactic body radiotherapy (SBRT) is a young technology that can deliver a high dose of radiation to the target, utilizing either a single dose or a small number of fractions with a high degree of precision within the body. Various technical solutions co-exist nowadays, with particular features, possibilities and limitations. Health care authorities have currently validated SBRT in a very limited number of locations, but many indications are still under investigation. It is therefore challenging to accurately appreciate the SBRT therapeutic index, its place and its role within the anticancer therapeutic arsenal. The aim of the present review is to provide SBRT definitions, current indications, and summarize the future ways of research. There are three validated indications for SBRT: un-resecable T1-T2 non small cell lung cancer, <3 slow-growing pulmonary metastases secondary to a stabilized primary, and the tumours located close to the medulla. In other situations, the benefit of SBRT is still to be demonstrated. One of the most promising way of research is the ablative treatment of oligo metastatic cancers, with recent studies suggesting a survival benefit. Furthermore, the most recent data suggest that SBRT is safe. Finally, the SBRT combined with immune therapies is promising, since it could theoretically trigger the adaptative anticancer response.


Assuntos
Neoplasias/radioterapia , Radiocirurgia , Neoplasias das Glândulas Suprarrenais/radioterapia , Neoplasias das Glândulas Suprarrenais/secundário , Neoplasias Encefálicas/radioterapia , Neoplasias Encefálicas/secundário , Carcinoma Hepatocelular/radioterapia , Carcinoma Pulmonar de Células não Pequenas/radioterapia , Terapia Combinada/métodos , Previsões , Humanos , Imunoterapia/métodos , Neoplasias Renais/radioterapia , Neoplasias Hepáticas/radioterapia , Neoplasias Hepáticas/secundário , Neoplasias Pulmonares/radioterapia , Neoplasias Pulmonares/secundário , Neoplasias Pancreáticas , Radiocirurgia/métodos , Radiocirurgia/tendências , Dosagem Radioterapêutica , Neoplasias da Medula Espinal/radioterapia
7.
Oncology ; 97(3): 125-134, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31266037

RESUMO

OBJECTIVES: The aim of this study was to identify and compare prognostic factors, management strategies, and outcomes of very locally advanced cervical cancer (CC) (i.e., stage IVA) and metastatic CC (i.e., stage IVB). METHOD: A retrospective review was conducted based on all consecutive patients treatedfor stage IV CC in a comprehensive cancer care centre between 2004 and 2017. RESULTS: Sixty-eight patients were included. Performance status (PS) was ≥2 for 35.9%. Median age at diagnosis was 60.5. There were 24 stage IVA CC (35.3%) and 44 stage IVB CC (64.7%). Seventeen patients with stage IVB CC had only para-aortic lymph node metastases (38.6%), 13 had only distant metastases (29.5%), and 14 had both (31.8%). Patients with stage IVA CC experienced a radiotherapy with curative intent (n = 14, 58.3%) +/- concomitant chemotherapy, or a palliative treatment (n = 10, 41.7%). Twenty-three patients with stage IVB CC received a prior chemotherapy (52.3%), 11 a primary concomitant chemoradiation (25%), and 10 a palliative treatment (22.7%). The mean follow-up was 18.0 months. The 5-year overall survival was 5.1% for stage IVA (95% CI = 0.7-33.9), and 10.5% for stage IVB (95% CI = 3.7-29.7). In multivariate analysis, PS >1 was identified as a poor prognostic factor of disease-specific survival for stage IVA CC. PS >1 and pelvic lymph node involvement were identified as poor prognostic factors of overall survival and disease-specific survival for stage IVB CC. CONCLUSIONS: In daily clinical practice, outcomes of stages IV CC are poor. Treatment of advanced and metastatic CC remains challenging. New management strategies are needed, as well as efficient preventive strategies.


Assuntos
Neoplasias do Colo do Útero/mortalidade , Neoplasias do Colo do Útero/patologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Terapia Combinada , Comorbidade , Feminino , França/epidemiologia , Humanos , Pessoa de Meia-Idade , Imagem Multimodal , Metástase Neoplásica , Estadiamento de Neoplasias , Prognóstico , Estudos Retrospectivos , Resultado do Tratamento , Neoplasias do Colo do Útero/epidemiologia , Neoplasias do Colo do Útero/terapia
8.
Presse Med ; 48(7-8 Pt 1): 756-766, 2019.
Artigo em Francês | MEDLINE | ID: mdl-31307878

RESUMO

Human oncogenic papillomaviruses (HPV) have an increasingly prominent role in the genesis of many cancers. The oncogenic mechanisms associated with HPV are now better known and make it possible to explain the etiopathogenesis of the association. HPV status is now sought for certain cancers and conditions both prognosis and management of patients. Preventive antiviral vaccination has become a real public health issue and aims to effectively reduce the prevalence of cervical, anal and oropharynx cancer, HPV-associated. However, vaccination against HPV still lags behind. The purpose of this review is to redefine the involvement of HPV in several cancers as well as current therapeutic challenges of HPV-related cancers, notably in term of prevention.


Assuntos
Transformação Celular Viral/fisiologia , Papillomaviridae/fisiologia , Infecções por Papillomavirus/prevenção & controle , Medicina Preventiva/métodos , Vacinação , Neoplasias do Ânus/prevenção & controle , Neoplasias do Ânus/virologia , Carcinogênese , Feminino , Humanos , Masculino , Neoplasias Orofaríngeas/prevenção & controle , Neoplasias Orofaríngeas/virologia , Infecções por Papillomavirus/virologia , Vacinas contra Papillomavirus/uso terapêutico , Neoplasias do Colo do Útero/prevenção & controle , Neoplasias do Colo do Útero/virologia , Vacinação/métodos , Vacinação/psicologia , Vacinação/tendências
9.
Acta Oncol ; 58(8): 1158-1162, 2019 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-31074314

RESUMO

Background: Phase II trials are designed to assess the efficacy/toxicity ratio of experimental treatments and select those worth being tested in phase III trials. Although crucial limitations were identified when concurrent chemoradiation (cCRT) phase III trials characteristics were assessed, features of cCRT phase II trials have never been reported. The objective was to describe features of all cCRT phase II trials. Methods and material: Requests were performed in the Medline database (via PubMed). The latest update was performed in April 2016, using the following MESH terms: 'clinical trials: phase II as topic', 'chemoradiotherapy'. Results: Four hundred and fifty-eight cCRT phase II trials were identified. They were mainly multicenter (51.5%), single arm studies (77.7%) published after 2011 (55.0%). The median number of included patients was 52. Primary endpoints were mainly response rate (20.5%), pathological complete response (14.4%) and overall survival (12.6%). The primary endpoint was not defined in 22% of studies. Tumors were mostly lung (23.1%), head and neck (20.3%), colorectal (16.6%) and esophagogastric cancer (14.6%) treated at a locally advanced setting (81.7%). 55.2% of trials used 3D-conformal radiotherapy and 9.1% intensity-modulated radiotherapy, mainly with normo-fractionation (82.0% of the 573 arms with radiotherapy). Radiation technique was not reported in 19.9% of studies. Associated anticancer drugs (563 arms) were mainly conventional chemotherapies (559 arms): cisplatin (46.2%) and 5-fluorouracil (28.3%). Non cytotoxic agents (targeted therapies, immunotherapies) were tested in 97 arms (17%). With a median follow-up of 31 months, acute grades 3-5 were reported in 98.5% of studies and late toxicities in 44.5%. Follow-up was not reported in 17% of studies. Conclusions: cCRT phase II trials featured severe limitations, with outdated radiation techniques, insufficient reporting of crucial data and a small number of included patients. This certainly limited the impact of conclusions and hindered the development of successful phase III trials.


Assuntos
Quimiorradioterapia/efeitos adversos , Ensaios Clínicos Fase II como Assunto , Neoplasias/terapia , Terapias em Estudo/efeitos adversos , Antineoplásicos/efeitos adversos , Quimiorradioterapia/métodos , Fracionamento da Dose de Radiação , Humanos , Estudos Multicêntricos como Assunto , Neoplasias/mortalidade , Radioterapia Conformacional/efeitos adversos , Terapias em Estudo/métodos , Fatores de Tempo , Resultado do Tratamento
10.
Bull Cancer ; 106(1): 48-54, 2019 Jan.
Artigo em Francês | MEDLINE | ID: mdl-30616840

RESUMO

Innovation in radiotherapy should meet multiple challenges, both technically, biologically, clinically and socially. Scientific, technological and biological advances have resulted in major changes in the implementation, indications, and therapeutic index of radiotherapy over the last century. Based on technical innovations (conformal radiotherapy, intensity modulation, CBCT, stereotactic body radiotherapy and MRI embedded system) and knowledge in cancer biology ("oxygen effect", "checkpoints", targeted therapies, molecular profiles and immunotherapy) highlighted in recent decades, the news in radiotherapy is rich and varied. The 2018 news are particularly focused in the role of hypofractionation in prostate cancer, the use of stereotactic body radiotherapy in oligometastatic patients, the possibility of de-intensify treatment in HPV-related oropharynx cancer, and the combination of short-term androgen deprivation to prostate bed salvage radiotherapy. The present manuscript reviews the 2018 latest advances.


Assuntos
Radioterapia/tendências , Humanos , Hipofracionamento da Dose de Radiação , Radioterapia/métodos
11.
Crit Rev Oncol Hematol ; 131: 96-101, 2018 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-30293712

RESUMO

Triple-negative breast cancer (TNBC) (estrogen receptor-negative, progesterone receptor-negative, and HER2-negative) is viewed as an aggressive subgroup of breast cancer. Treating patients with TNBC remains clinically challenging. It's now well established than radiation therapy is able to improve locoregional control in breast cancer patients both after breast conserving surgery or mastectomy, with positive impact in high-risk patients for long-term survival. Biologic characterization of breast tumor different subtypes, in particular the heterogeneous subtype of TNBC could permit to adapt the treatment plan. In the present review, summarizing the molecular types, we describe clinical features and postoperative radiotherapy current situation for TNBC, and we provide new strategies and directions through an adapted radiation therapy.


Assuntos
Radioterapia , Neoplasias de Mama Triplo Negativas/radioterapia , Feminino , Humanos , Prognóstico , Neoplasias de Mama Triplo Negativas/patologia
13.
Radiat Oncol ; 13(1): 16, 2018 Feb 02.
Artigo em Inglês | MEDLINE | ID: mdl-29394940

RESUMO

BACKGROUND: Despite screening campaigns, cervical cancers remain among the most prevalent malignancies and carry significant mortality, especially in developing countries. Most studies report outcomes of patients receiving the usual standard of care. It is possible that these selected patients may not correctly represent patients in a real-world setting, which may be a limitation in interpreting outcomes. This study was undertaken to identify prognostic factors, management strategies and outcomes of locally advanced cervical cancers (LACC) treated in daily clinical practice. METHODS: Medical files of all consecutive patients treated with curative intent for LACC in a French Cancer Care Center between 2004 and 2014 were reviewed retrospectively. RESULTS: Ninety-four patients were identified. Performance status was ≥ 2 in 10.6%. Median age at diagnosis was 63.0. Based on the International Federation of Gynecology and Obstetrics classification, tumours were classified as follows: 10.6% IB2, 22.3% IIA, 51.0% IIB, 4.3% IIIA and 11.7% IIIB. Pelvic lymph nodes were involved in 34.0% of cases. Radiotherapy was delivered for all patients. Radiotherapy technique was intensity modulated radiation therapy or volumetric modulated arc therapy in 39.4% of cases. A concurrent cisplatin chemotherapy was delivered in 68.1% of patients. Brachytherapy was performed in 77.7% of cases. The recommended standard care (concurrent chemoradiotherapy with at least five chemotherapy cycles during radiotherapy, followed by brachytherapy) was delivered in 43.6%. The median overall treatment time was 56 days. Complete tumour sterilisation was achieved in 55.2% of cases. Mean follow-up was 54.3 months. Local recurrence rate was 18.1%. Five-year overall survival was 61.9% (95% Confident Interval (CI) = 52.3-73.2) and five-year disease-specific survival was 68.5% (95% CI = 59.2-79.2). Poor performance status, lymph nodes metastasis and absence of concurrent chemotherapy were identified as poor prognostic factors in multivariate analysis. CONCLUSIONS: Less than 50% of patients received the standard care. Because LACC patients and disease are heterogeneous, treatment tailoring appears to be common in current clinical practice. However, guidelines for tailoring management are not currently available. More data about real-world settings are required in order to to optimise clinical trials' aims and designs, and make them translatable in daily clinical practice. TRIAL REGISTRATION: retrospectively registered.


Assuntos
Neoplasias do Colo do Útero/patologia , Neoplasias do Colo do Útero/terapia , Adulto , Idoso , Quimiorradioterapia/métodos , Intervalo Livre de Doença , Feminino , Humanos , Estimativa de Kaplan-Meier , Pessoa de Meia-Idade , Prognóstico , Estudos Retrospectivos , Resultado do Tratamento , Neoplasias do Colo do Útero/mortalidade
14.
Oncotarget ; 8(46): 81485-81491, 2017 Oct 06.
Artigo em Inglês | MEDLINE | ID: mdl-29113407

RESUMO

BACKGROUND: Cancer patients tend to use more and more complementary or alternative medicine concomitantly to radiotherapy. A large part of these patients have recourse to Mind and Body practice, mainly with biofield healers or magnetizers, without any level of evidence. The aim of the present study was to report epidemiologic data on biofield healers in radiation therapy patients, and to assess the possible objective and subjective benefits. MATERIALS AND METHODS: A retrospective study was conducted in a French cancer institute. All consecutive breast or prostate cancer patients undergoing a curative radiotherapy during 2015 were screened (n = 806). Healer consultation procedure, frequency, and remuneration were collected. Patient's self-evaluation of healer's impact on treatment tolerance was reported. Tolerance (fatigue, pain) was assessed through visual analogic scale (0 to 10). Analgesic consumption was evaluated. Toxicities were described according to NTCAEv4.0. RESULTS: 500 patients were included (350 women and 150 men). A total of 256 patients (51.2%) consulted a healer during their radiation treatment, with a majority of women (58%, p < 0.01). Most of patients had weekly (n = 209, 41.8%) or daily (n = 84, 16.8%) appointments with their healer. Regarding the self-reported tolerance, > 80% of the patients described a "good" or "very good" impact of the healer on their treatment. Healers were mainly voluntary (75.8%). Regarding the clinical efficacy, no difference was observed in prostate and in breast cancer patients (toxicity, antalgic consumption, pain). CONCLUSIONS: This study reveals that the majority of patients treated by radiotherapy consults a healer and reports a benefit on subjective tolerance, without objective tolerance amelioration.

15.
Oncotarget ; 8(26): 43543-43554, 2017 Jun 27.
Artigo em Inglês | MEDLINE | ID: mdl-28402936

RESUMO

Radiation-induced fibrosis is widely considered as a common but forsaken phenomenon that can lead to clinical sequela and possibly vital impairments. Lysophosphatidic acid is a bioactive lipid involved in fibrosis and probably in radiation-induced fibrosis as suggested in recent studies. Lysophosphatidic acid is also a well-described pro-oncogenic factor, involved in carcinogenesis processes (proliferation, survival, angiogenesis, invasion, migration). The present review highlights and summarizes the links between lysophosphatidic acid and radiation-induced fibrosis, lysophosphatidic acid and radioresistance, and proposes lysophosphatidic acid as a potential central actor of the radiotherapy therapeutic index. Besides, we hypothesize that following radiotherapy, the newly formed tumour micro-environment, with increased extracellular matrix and increased lysophosphatidic acid levels, is a favourable ground to metastasis development. Lysophosphatidic acid could therefore be an exciting therapeutic target, minimizing radio-toxicities and radio-resistance effects.


Assuntos
Transformação Celular Neoplásica/induzido quimicamente , Fibrose/etiologia , Lisofosfolipídeos/efeitos adversos , Animais , Biomarcadores , Fibrose/metabolismo , Fibrose/patologia , Humanos , Neoplasias/complicações , Neoplasias/etiologia , Neoplasias/patologia , Neoplasias/radioterapia , Tolerância a Radiação/efeitos dos fármacos , Radiação Ionizante , Radioterapia/efeitos adversos , Radioterapia/métodos , Transdução de Sinais , Índice Terapêutico
16.
Onco Targets Ther ; 10: 1375-1380, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-28424553

RESUMO

In the past few years, metastatic renal cell carcinoma prognosis was improved by the development of molecular targeted therapies (TTs). At the metastatic stage, the tolerance to treatment is a major concern, not only because of the challenge of the efficacy/toxicity ratio improvement but also because of the importance of an optimal adherence to oral treatments. The present case series relates the issues of dealing with uncommon and sometimes never described side effects of sunitinib and sorafenib. The first case report deals with grade 3 vomiting during hemodialysis with concurrent administration of sunitinib. The second case is an iterative gout attack induced by sunitinib. The third case presents a grade 3 scalp dysesthesia with sorafenib. The fourth case includes an astonishing efficacy of metronomic (ie, low doses during a long period of time) bevacizumab in monotherapy. Multidisciplinary management and systematic reporting of unexpected efficacies and toxicities are needed to better understand TTs real therapeutic index. Although TTs revolutionized metastatic renal cell cancer prognosis, they also brought about previously unknown side effects. Identification and management of these off-target effects may be tricky, and therefore, comedication must be wisely chosen. As the physiopathology of these side effects is still unclear, multidisciplinary management and systematic reporting of toxicities are essential.

17.
Bull Cancer ; 104(1): 86-91, 2017 Jan.
Artigo em Francês | MEDLINE | ID: mdl-27955816

RESUMO

Recent innovations in oncology area helped to improve the prognosis of certain cancers including metastatic ones with a decrease in mortality. Recommendations describe the treatment of metastatic cancer as systemic therapy or complementary care and the role of locoregional treatment in the treatment plan only occurs in a palliative context. Currently, in the clinical practice, out of "the evidence based medicine", an early locoregional therapy (surgery or radiation therapy) can be proposed in several cases of metastatic cancers. The aim of the present review is to describe the role of the primary tumor radiation therapy in metastatic disease. In metastatic breast, prostate, cervix, rectal or nasopharyngeal cancers, locoregional treatment including radiation therapy can, in some cases, be discussed and decided in MDT. Ongoing clinical trials in these locations should soon precise the benefit of this locoregional treatment. It will also be important to define the specific criteria in order to select patients who could benefit from this treatment.


Assuntos
Neoplasias da Mama/radioterapia , Neoplasias Nasofaríngeas/radioterapia , Neoplasias da Próstata/radioterapia , Neoplasias Retais/radioterapia , Neoplasias Uterinas/radioterapia , Neoplasias da Mama/mortalidade , Neoplasias da Mama/secundário , Neoplasias da Mama/cirurgia , Feminino , Humanos , Masculino , Neoplasias Nasofaríngeas/mortalidade , Neoplasias Nasofaríngeas/secundário , Neoplasias da Próstata/mortalidade , Neoplasias da Próstata/secundário , Neoplasias Retais/mortalidade , Neoplasias Retais/secundário , Neoplasias Uterinas/mortalidade , Neoplasias Uterinas/secundário
18.
Chin J Cancer ; 35: 43, 2016 May 09.
Artigo em Inglês | MEDLINE | ID: mdl-27160517

RESUMO

No consensus exists regarding the role of radiotherapy in the management of gynecologic cancer in nonagenarian patients. We retrospectively reviewed the outcomes of 19 consecutive nonagenarian patients with gynecologic cancer (6 endometrial cancers, 6 cervical cancers, 4 vulvar cancers, and 3 vaginal cancers) who were treated with radiotherapy. Radiotherapy was performed mainly in a palliative setting (n = 12; 63.2%), with a median dose of 45 Gy (range, 6-76 Gy). Infrequent major acute or late toxicities were reported. Among 19 patients, 9 (47.4%) experienced tumor progression, 5 (26.3%) experienced complete response, 2 (10.5%) experienced stable disease and/or partial response. At last follow-up, 12 patients (63.2%) had died; most deaths (n = 9) occurred because of the cancer. These results suggest that radiotherapy is feasible in the treatment of nonagenarian patients with gynecologic cancer.


Assuntos
Neoplasias do Endométrio/radioterapia , Neoplasias do Colo do Útero/radioterapia , Neoplasias Vaginais/radioterapia , Neoplasias Vulvares/radioterapia , Idoso de 80 Anos ou mais , Neoplasias do Endométrio/mortalidade , Feminino , Humanos , Cuidados Paliativos/métodos , Radioterapia/efeitos adversos , Dosagem Radioterapêutica , Estudos Retrospectivos , Análise de Sobrevida , Resultado do Tratamento , Neoplasias do Colo do Útero/mortalidade , Neoplasias Vaginais/mortalidade , Neoplasias Vulvares/mortalidade
19.
Anticancer Drugs ; 27(5): 427-32, 2016 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-27045782

RESUMO

Molecular targeted therapies (TT) are the cornerstone of metastatic renal cell carcinoma (RCC) treatment. There is a paucity of data on the safety of the radiotherapy (RT)-TT association in a sequential or a concomitant setting. The aim of the present study is to retrospectively assess the safety of the RT-TT association. From 2006 to 2014, data from 84 consecutive patients treated with RT and TT for metastatic RCC were retrospectively collected. RT-TT sequential and concomitant associations were, respectively, defined by a time interval of more than five TT half-lives and less than or equal to five TT half-lives between the last TT administration and RT initiation. Toxicities in the fields of RT were assessed systematically. As many patients received several TT and RT courses, 136 RT-TT associations were analyzed, with 66 sequential and 70 concomitant schemes. RT was mainly delivered on bone (75%) and brain metastases (14.7%). TT were tyrosine kinase inhibitors (73.5%), mTOR inhibitors (19.8%), and monoclonal antibodies (6.7%). With a median follow-up of 9.5 months, whatever the sequence, no grade≥4 toxicity was reported. Two grade 3 toxicities were reported with sequential (3%) and concomitant (2.9%) RT-TT, respectively. Sequential or concomitant RT-TT associations in metastatic RCC do not seem to cause major toxicity.


Assuntos
Antineoplásicos/efeitos adversos , Carcinoma de Células Renais/terapia , Neoplasias Renais/terapia , Adulto , Idoso , Idoso de 80 Anos ou mais , Anticorpos Monoclonais/efeitos adversos , Carcinoma de Células Renais/secundário , Quimiorradioterapia/efeitos adversos , Feminino , Humanos , Neoplasias Renais/patologia , Masculino , Pessoa de Meia-Idade , Terapia de Alvo Molecular , Proteínas Tirosina Quinases/antagonistas & inibidores , Estudos Retrospectivos , Serina-Treonina Quinases TOR/antagonistas & inibidores
20.
Chemotherapy ; 61(3): 122-6, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-26752402

RESUMO

BACKGROUND: Trabectedin plus pegylated liposomal doxorubicin (PLD) proved efficacious as second-line treatment for patients with recurrent ovarian cancer (ROC). METHODS: We report a single-center retrospective analysis of the efficacy and tolerance of trabectedin 1.1 mg/m2 every 3 weeks in a cohort of real-life ROC patients. RESULTS: From February 2012 to January 2014, 17 patients were treated with trabectedin alone or combined with PLD. Median age was 61 years (range: 48-78). Performance status was 0-1 in 16 patients (94%). Disease response rate was 53% and disease control rate was 76%. At the end of the follow-up, 8 patients (47%) were alive. Median overall survival was 17.6 months (95% CI 13.6 to not reached). Median progression-free survival was 6.7 months (95% CI 5.4-10.0). The most frequent grade 3-4 toxicities were neutropenia (n = 4, 24%) and nausea/vomiting (n = 4, 24%). CONCLUSION: Trabectedin combined with PLD seems efficient in and well tolerated by real-life ROC patients.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Neoplasias Ovarianas/tratamento farmacológico , Idoso , Protocolos de Quimioterapia Combinada Antineoplásica/administração & dosagem , Protocolos de Quimioterapia Combinada Antineoplásica/efeitos adversos , Dioxóis/administração & dosagem , Intervalo Livre de Doença , Doxorrubicina/administração & dosagem , Doxorrubicina/análogos & derivados , Feminino , Humanos , Pessoa de Meia-Idade , Recidiva Local de Neoplasia , Neoplasias Ovarianas/patologia , Polietilenoglicóis/administração & dosagem , Estudos Retrospectivos , Taxa de Sobrevida , Tetra-Hidroisoquinolinas/administração & dosagem , Trabectedina , Resultado do Tratamento
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