120 research outputs found

    The impact of patients’ and physicians’ characteristics on surgery decision for head and neck cancer: Results of a national survey

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    Background: Population’s aging leads to an increased diagnosis of head and neckcancer (HNC) in older patients (pts). Treatment can involve surgery, radiation, sys-temic therapy or multimodal therapy. Due to heterogeneity of older pts, thecomprehensive geriatric assessment (CGA) is considered the gold standard tool toclassify pts according to frailty profile. Multidisciplinary approach including a geria-trician is essential. CGA may be helpful to personalize treatment plan and to detectgeriatric conditions that can be reversible through geriatric interventions. We aim toevaluate the impact of CGA on therapeutic decision

    A deep dive into fat: Investigating blubber lipidomic fingerprint of killer whales and humpback whales in northern Norway

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    In cetaceans, blubber is the primary and largest lipid body reservoir. Our current understanding about lipid stores and uses in cetaceans is still limited, and most studies only focused on a single narrow snapshot of the lipidome. We documented an extended lipidomic fingerprint in two cetacean species present in northern Norway during wintertime. We were able to detect 817 molecular lipid species in blubber of killer whales (Orcinus orca) and humpback whales (Megaptera novaeangliae). The profiles were largely dominated by triradylglycerols in both species and, to a lesser extent, by other constituents including glycerophosphocholines, phosphosphingolipids, glycerophosphoethanolamines, and diradylglycerols. Through a unique combination of traditional statistical approaches, together with a novel bioinformatic tool (LION/web), we showed contrasting fingerprint composition between species. The higher content of triradylglycerols in humpback whales is necessary to fuel their upcoming half a year fasting and energy-demanding migration between feeding and breeding grounds. In adipocytes, we assume that the intense feeding rate of humpback whales prior to migration translates into an important accumulation of triacylglycerol content in lipid droplets. Upstream, the endoplasmic reticulum is operating at full capacity to supply acute lipid storage, consistent with the reported enrichment of glycerophosphocholines in humpback whales, major components of the endoplasmic reticulum. There was also an enrichment of membrane components, which translates into higher sphingolipid content in the lipidome of killer whales, potentially as a structural adaptation for their higher hydrodynamic performance. Finally, the presence of both lipid-enriched and lipid-depleted individuals within the killer whale population in Norway suggests dietary specialization, consistent with significant differences in ÎŽ15N and ÎŽ13C isotopic ratios in skin between the two groups, with higher values and a wider niche for the lipid-enriched individuals. Results suggest the lipid-depleted killer whales were herring specialists, while the lipid-enriched individuals might feed on both herrings and seals

    Phthalate contamination in marine mammals off the Norwegian coast

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    Phthalates are used in plastics, found throughout the marine environment and have the potential to cause adverse health effects. In the present study, we quantified blubber concentrations of 11 phthalates in 16 samples from stranded and/or free-living marine mammals from the Norwegian coast: the killer whale (Orcinus orca), sperm whale (Physeter macrocephalus), long-finned pilot whale (Globicephala melas), white-beaked dolphin (Lagenorhynchus albirostris), harbour porpoise (Phocoena phocoena), and harbour seal (Phoca vitulina). Five compounds were detected across all samples: benzyl butyl phthalate (BBP; in 50 % of samples), bis(2-ethylhexyl) phthalate (DEHP; 33 %), diisononyl phthalate (DiNP; 33 %), diisobutyl phthalate (DiBP; 19 %), and dioctyl phthalate (DOP; 13 %). Overall, the most contaminated individual was the white-beaked dolphin, whilst the lowest concentrations were measured in the killer whale, sperm whale and long-finned pilot whale. We found no phthalates in the neonate killer whale. The present study is important for future monitoring and management of these toxic compounds

    A Phase 2 Study of Coltuximab Ravtansine (SAR3419) Monotherapy in Patients with Relapsed or Refractory Acute Lymphoblastic Leukemia (ALL)

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    International audienceBackground Long-term disease-free survival in adult patients with acute lymphoblastic leukemia (ALL) remains unsatisfactory, and treatment options are limited for those patients who relapse or fail to respond following initial therapy. We conducted a dose-escalation/expansion phase 2, multicenter, single-arm study to determine the optimal dose of coltuximab ravtansine (SAR3419), an anti-CD19 antibody-drug conjugate, in this setting. Patients and Methods The dose-escalation part of the study determined the selected dose of coltuximab ravtansine for evaluation of efficacy and safety in the dose-expansion phase. Patients received coltuximab ravtansine induction therapy (up to 8 weekly doses); responding patients were eligible for maintenance therapy (biweekly administrations for up to 24 weeks). Three dose levels of coltuximab ravtansine were examined: 55, 70, and 90 mg/m2. The primary endpoint was objective response rate (ORR). Secondary endpoints included duration of response (DOR) and safety. Results A total of 36 patients were treated: 19 during dose escalation; 17 during dose expansion. One dose-limiting toxicity was observed at 90 mg/m2 (grade 3 peripheral motor neuropathy), and therefore 70 mg/m2 was selected for the dose-expansion phase. Five patients discontinued therapy due to adverse events (AEs). The most common AEs were pyrexia, diarrhea, and nausea. Of 17 evaluable patients treated at the selected dose, 4 responded (estimated ORR using Bayesian methodology: 25.47% [80% confidence interval: 14.18-39.6%]); DOR was 1.94 (range: 1-5.6) months. Based on these results, the study was prematurely discontinued. Conclusions Coltuximab ravtansine is well tolerated but is associated with a low clinical response rate in patients with relapsed/refractory AL

    The CADM1 tumor suppressor gene is a major candidate gene in MDS with deletion of the long arm of chromosome 11.

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    Myelodysplastic syndromes (MDS) represent a heterogeneous group of clonal hematopoietic stem cell disorders characterized by ineffective hematopoiesis leading to peripheral cytopenias and in a substantial proportion of cases to acute myeloid leukemia. The deletion of the long arm of chromosome 11, del(11q), is a rare but recurrent clonal event in MDS. Here, we detail the largest series of 113 cases of MDS and myelodysplastic syndromes/myeloproliferative neoplasms (MDS/MPN) harboring a del(11q) analyzed at clinical, cytological, cytogenetic, and molecular levels. Female predominance, a survival prognosis similar to other MDS, a low monocyte count, and dysmegakaryopoiesis were the specific clinical and cytological features of del(11q) MDS. In most cases, del(11q) was isolated, primary and interstitial encompassing the 11q22-23 region containing ATM, KMT2A, and CBL genes. The common deleted region at 11q23.2 is centered on an intergenic region between CADM1 (also known as Tumor Suppressor in Lung Cancer 1) and NXPE2. CADM1 was expressed in all myeloid cells analyzed in contrast to NXPE2. At the functional level, the deletion of Cadm1 in murine Lineage-Sca1+Kit+ cells modifies the lymphoid-to-myeloid ratio in bone marrow, although not altering their multilineage hematopoietic reconstitution potential after syngenic transplantation. Together with the frequent simultaneous deletions of KMT2A, ATM, and CBL and mutations of ASXL1, SF3B1, and CBL, we show that CADM1 may be important in the physiopathology of the del(11q) MDS, extending its role as tumor-suppressor gene from solid tumors to hematopoietic malignancies

    Oral and oropharyngeal cancer surgery with free-flap reconstruction in the elderly: Factors associated with long-term quality of life, patient needs and concerns. A GETTEC cross-sectional study

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    Objectives: To assess the factors associated with long-term quality of life (QoL) and patient concerns in elderly oral or oropharyngeal cancer (OOPC) patients after oncologic surgery and free-flap reconstruction. Methods: Patients aged over 70 years who were still alive and disease-free at least 1 year after surgery were enrolled in this cross-sectional multicentric study. Patients completed the EORTC QLQ-C30, -H&N35 and -ELD14 QoL questionnaires, and the Hospital Anxiety and Depression Scale (HADS). Patient needs were evaluated using the Patient Concerns Inventory (PCI). Factors associated with these clinical outcomes were determined in univariate and multivariate analysis. Results: Sixty-four patients were included in this study. Long-term QoL, functioning scales and patient autonomy were well-preserved. Main persistent symptoms were fatigue, constipation and oral function-related disorders. Salivary and mastication/swallowing problems were the main patient concerns. The mean number of patient concerns increased with the deterioration of their QoL. Psychological distress (HADS score ≄ 15) and patient frailty (G8 score < 15) were significantly associated with poor QoL outcomes. Conclusions: We found a negative correlation between the number of patient concerns and QoL. Dental rehabilitation and psychological and nutritional supportive measures are of critical importance in the multidisciplinary management of elderly OOPC patients

    Dual Relief of T-lymphocyte Proliferation and Effector Function Underlies Response to PD-1 Blockade in Epithelial Malignancies

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    Although understanding of T-cell exhaustion is widely based on mouse models, its analysis in patients with cancer could provide clues indicating tumor sensitivity to immune checkpoint blockade (ICB). Data suggest a role for costimulatory pathways, particularly CD28, in exhausted T-cell responsiveness to PD-1/PD-L1 blockade. Here, we used single-cell transcriptomic, phenotypic, and functional approaches to dissect the relation between CD8+ T-cell exhaustion, CD28 costimulation, and tumor specificity in head and neck, cervical, and ovarian cancers. We found that memory tumor–specific CD8+ T cells, but not bystander cells, sequentially express immune checkpoints once they infiltrate tumors, leading, in situ, to a functionally exhausted population. Exhausted T cells were nonetheless endowed with effector and tumor residency potential but exhibited loss of the costimulatory receptor CD28 in comparison with their circulating memory counterparts. Accordingly, PD-1 inhibition improved proliferation of circulating tumor–specific CD8+ T cells and reversed functional exhaustion of specific T cells at tumor sites. In agreement with their tumor specificity, high infiltration of tumors by exhausted cells was predictive of response to therapy and survival in ICB-treated patients with head and neck cancer. Our results showed that PD-1 blockade–mediated proliferation/reinvigoration of circulating memory T cells and local reversion of exhaustion occur concurrently to control tumors

    Identification de biomarqueurs de réponse à l'azacitidine dans les leucémies aigues myéloïdes du sujet ùgé

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    Elderly patients with acute myeloid leukemias (AML) represent the most frequent acute leukemias. Although they differ in their pathophysiology, they all share an adverse prognosis. Azacitidine has become one of the reference low-intensity frontline therapy for patients deemed unfit for intensive chemotherapy. Patients selection between these 2 options remains controversial. Predictive biomarkers of response to azacitidine should allowed to rationalize this decision making. Classical prognosis factors of a cohort of 334 newly diagnosed AML lack of precision to determine the optimum strategy for any individual patient. By sequencing of a 224-patients series of azacitidine-treated AML patients, we demonstrate an adverse impact of TP53 mutation on overall survival, irrespective of the functional characterization of p53 mutants. Exome sequencing of 49 patients with extreme phenotype as defined by their response under azacitidine (26 responders versus 23 non-responders), followed by targeted sequencing of 4 common polymorphisms in a validation set of 175 patients, showed a positif impact of MECOM rs7622799 on overall survival.Les leucĂ©mies aiguĂ«s myĂ©loĂŻdes (LAM) du sujet ĂągĂ© sont les plus frĂ©quentes des leucĂ©mies aiguĂ«s. Bien que de physiopathologie hĂ©tĂ©rogĂšne, elles partagent un pronostic dĂ©favorable. L’azacitidine est devenue un des traitements de rĂ©fĂ©rence pour les patients jugĂ©s inĂ©ligibles pour une chimiothĂ©rapie intensive mais les critĂšres de sĂ©lection des patients entre ces deux approches sont controversĂ©s. L’identification de biomarqueur prĂ©dictif de rĂ©ponse Ă  l’azacitidine doit permettre de rationnaliser ce choix thĂ©rapeutique. Les facteurs pronostiques classiques d’une cohorte de 334 patients atteints de LAM manquent de prĂ©cision pour guider la meilleure stratĂ©gie pour un patient donnĂ©. A partir du sĂ©quençage de 224 patients traitĂ©s par azacitidine, nous montrons un impact dĂ©favorable des mutations de TP53 sur la survie globale, quel que soit leur caractĂ©risation fonctionnelle. Le sĂ©quençage des exomes de 49 patients selon leur rĂ©ponse Ă  l’azacitidine (26 rĂ©pondeurs et 23 non rĂ©pondeurs), suivi du re-sĂ©quençage ciblĂ© de 4 polymorphismes chez 175 patients a montrĂ© un impact positif du polymorphisme rs7622799 de MECOM sur la survie globale sous azacitidine

    Identification of biomarkers of response to azacitidine in older patients with acute myeloid leukemia

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    Les leucĂ©mies aiguĂ«s myĂ©loĂŻdes (LAM) du sujet ĂągĂ© sont les plus frĂ©quentes des leucĂ©mies aiguĂ«s. Bien que de physiopathologie hĂ©tĂ©rogĂšne, elles partagent un pronostic dĂ©favorable. L’azacitidine est devenue un des traitements de rĂ©fĂ©rence pour les patients jugĂ©s inĂ©ligibles pour une chimiothĂ©rapie intensive mais les critĂšres de sĂ©lection des patients entre ces deux approches sont controversĂ©s. L’identification de biomarqueur prĂ©dictif de rĂ©ponse Ă  l’azacitidine doit permettre de rationnaliser ce choix thĂ©rapeutique. Les facteurs pronostiques classiques d’une cohorte de 334 patients atteints de LAM manquent de prĂ©cision pour guider la meilleure stratĂ©gie pour un patient donnĂ©. A partir du sĂ©quençage de 224 patients traitĂ©s par azacitidine, nous montrons un impact dĂ©favorable des mutations de TP53 sur la survie globale, quel que soit leur caractĂ©risation fonctionnelle. Le sĂ©quençage des exomes de 49 patients selon leur rĂ©ponse Ă  l’azacitidine (26 rĂ©pondeurs et 23 non rĂ©pondeurs), suivi du re-sĂ©quençage ciblĂ© de 4 polymorphismes chez 175 patients a montrĂ© un impact positif du polymorphisme rs7622799 de MECOM sur la survie globale sous azacitidine.Elderly patients with acute myeloid leukemias (AML) represent the most frequent acute leukemias. Although they differ in their pathophysiology, they all share an adverse prognosis. Azacitidine has become one of the reference low-intensity frontline therapy for patients deemed unfit for intensive chemotherapy. Patients selection between these 2 options remains controversial. Predictive biomarkers of response to azacitidine should allowed to rationalize this decision making. Classical prognosis factors of a cohort of 334 newly diagnosed AML lack of precision to determine the optimum strategy for any individual patient. By sequencing of a 224-patients series of azacitidine-treated AML patients, we demonstrate an adverse impact of TP53 mutation on overall survival, irrespective of the functional characterization of p53 mutants. Exome sequencing of 49 patients with extreme phenotype as defined by their response under azacitidine (26 responders versus 23 non-responders), followed by targeted sequencing of 4 common polymorphisms in a validation set of 175 patients, showed a positif impact of MECOM rs7622799 on overall survival
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