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Emile J.-F.,University of Versailles | Tisserand J.,University of Versailles | Nowak F.,Institute National du Cancer INCa | Faucher G.,University of Versailles | And 7 more authors.
BMC Cancer | Year: 2013

Background: Knowledge about tumour gene mutation status is essential for the treatment of increasing numbers of cancer patients, and testing quality has a major impact on treatment response and cost. In 2012, 4,629 tests for BRAF p.V600 were performed in France, in patients with melanomas.Methods: Two batches of unstained melanoma sections were sent, in May and November 2012, to the 46 laboratories supported by the French National Institute of Cancer (INCa). An external quality assessment (EQA) evaluated mutation status, response times and compliance with INCa recommendations.Results: All the French laboratories involved in testing participated in the EQA. Fourteen different methods were used to detect BRAF mutations, most consisting of combinations of in-house techniques. False responses were noted in 25/520 cases (4.8%), 11 of which concerned confusion between p.V600E and p.V600K. Thus, 2.7% of responses would have led to inappropriate treatment. Within six months, mean response times decreased from 22 to 12 days (P<0.001), and the percentage of samples evaluated by a pathologist for tumour cell content increased, from 75.2% to 96.9% (P<0.001).Conclusion: Despite the use of non-certified methods, the false response rate was low. Nationwide EQA can improve the quality of molecular pathology tests on tumours. © 2013 Emile et al.; licensee BioMed Central Ltd. Source

Faucher C.,Institute Paoli Calmettes Regional | Le Corroller Soriano A.G.,French Institute of Health and Medical Research | Le Corroller Soriano A.G.,Aix - Marseille University | Esterni B.,Institute Paoli Calmettes Regional | And 19 more authors.
Bone Marrow Transplantation | Year: 2012

We report the first randomized study comparing early hospital discharge with standard hospital-based follow-up after high-dose chemotherapy (HDCT) and PBSCT. Patients aged 18-65 years, with an indication of PBSCT for non-leukemic malignant diseases were randomly assigned between two arms. Arm A consisted of early hospital discharge (HDCT during hospitalization, discharge at day 0, home stay with a caregiver, outpatient clinic follow-up). In arm B patients were followed up as inpatients. In total 131 patients were analyzed (66 in arm A and 65 in arm B). Patient characteristics and hematological reconstitution were comparable between the two groups. In arm A, 26 patients were actually discharged early. Patients in group A spent fewer days in hospital (11 vs 12 days, P=0.006). This strategy resulted in a 6% mean cost reduction per patient when compared with the conventional hospital-based group. The early discharge approach within the French health system, while safe and feasible, is highly dependent on social criteria (caregiver availability and home to hospital distance). It is almost always associated with conventional hospital readmission during the aplasia phase, and limits cost savings when considering the whole population of patients benefiting from HDCT in routine clinical practice. © 2012 Macmillan Publishers Limited. All rights reserved. Source

Beck F.,Institute National Of Prevention Et Deducation Pour La Sante Inpes | Beck F.,University of Paris Pantheon Sorbonne | Richard J.B.,Institute National Of Prevention Et Deducation Pour La Sante Inpes | Deutsch A.,Institute National du Cancer INCa | And 6 more authors.
Cancer/Radiotherapie | Year: 2013

Purpose: Radon exposure is a major environmental risk in health. It remains badly known by the general population. It is the second cause of lung cancer, after tobacco smoking. The aim of this cross-sectional general population survey was to describe radon exposure risk knowledge and the socioeconomic factors related to this knowledge. Materials and methods: The Cancer Barometer survey 2010 questioned the French population about its knowledge of radon as such and as health risk factor. This survey was a two-stage random sampling with computer-assisted telephone interview that was performed from April 3, 2010 to August 7, 2010 on a sample of 3,359 people aged 15 to 75 years old. Results: Among people aged 15 to 75 years old, only one in five knows that radon is a natural gas coming from the ground. This knowledge is more frequent among people living in an area that is directly concerned by radon, among men and increases with age, with the level of education and the level of income. Radon risk remains still widely underestimated by the general public, including in areas concerned by this risk. When people were confronted with radon exposure, few intended to remedy by improving their home. Conclusion: The success of prevention initiatives implies the support and the collaboration of various national and local actors. To improve their impact for the prevention of lung cancers, it could be more effective to couple these actions with prevention messages on tobacco. © 2013 Société française de radiothérapie oncologique (SFRO). Source

Konrat C.,French Institute of Health and Medical Research | Boutron I.,French Institute of Health and Medical Research | Boutron I.,Center dEpidemiologie Clinique | Boutron I.,University of Paris Descartes | And 10 more authors.
PLoS ONE | Year: 2012

Background: We aimed to determine the representation of elderly people in published reports of randomized controlled trials (RCTs). We focused on trials of 4 medications-pioglitazone, rosuvastatin, risedronate, and valsartan-frequently used by elderly patients with chronic medical conditions. Methods and Findings: We selected all reports of RCTs indexed in PubMed from 1966 to April 2008 evaluating one of the 4 medications of interest. Estimates of the community-based "on-treatment" population were from a national health insurance database (SNIIR-AM) covering approximately 86% of the population in France. From this database, we evaluated data claims from January 2006 to December 2007 for 1,958,716 patients who received one of the medications of interest for more than 6 months. Of the 155 RCT reports selected, only 3 studies were exclusively of elderly patients (2 assessing valsartan; 1 risedronate). In only 4 of 37 reports (10.8%) for pioglitazone, 4 of 22 (18.2%) for risedronate, 3 of 29 (10.3%) for rosuvastatine and 9 of 67 (13.4%) for valsartan, the proportion of patients aged 65 or older was within or above that treated in clinical practice. In 62.2% of the reports for pioglitazone, 40.9% for risedronate, 37.9% for rosuvastatine, and 70.2% for valsartan, the proportion of patients aged 65 or older was lower than half that in the treated population. The representation of elderly people did not differ by publication date or sample size. Conclusions: Elderly patients are poorly represented in RCTs of drugs they are likely to receive. © 2012 Konrat et al. Source

Guichard C.,French Institute of Health and Medical Research | Guichard C.,University of Paris Descartes | Amaddeo G.,French Institute of Health and Medical Research | Amaddeo G.,University of Paris Descartes | And 27 more authors.
Nature Genetics | Year: 2012

Hepatocellular carcinoma (HCC) is the most common primary liver malignancy. Here, we performed high-resolution copy-number analysis on 125 HCC tumors and whole-exome sequencing on 24 of these tumors. We identified 135 homozygous deletions and 994 somatic mutations of genes with predicted functional consequences. We found new recurrent alterations in four genes (ARID1A, RPS6KA3, NFE2L2 and IRF2) not previously described in HCC. Functional analyses showed tumor suppressor properties for IRF2, whose inactivation, exclusively found in hepatitis B virus (HBV)-related tumors, led to impaired TP53 function. In contrast, inactivation of chromatin remodelers was frequent and predominant in alcohol-related tumors. Moreover, association of mutations in specific genes (RPS6KA3-AXIN1 and NFE2L2-CTNNB1) suggested that Wnt/β-catenin signaling might cooperate in liver carcinogenesis with both oxidative stress metabolism and Ras/mitogen-activated protein kinase (MAPK) pathways. This study provides insight into the somatic mutational landscape in HCC and identifies interactions between mutations in oncogene and tumor suppressor gene mutations related to specific risk factors. © 2012 Nature America, Inc. All rights reserved. Source

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