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Bernard-Tessier A, Cancel M, Tombal B, Roubaud G, Carles Galceran J, Flechon A, McDermott R, Supiot S, Berthold D, Philippe R, Kacso G, Gravis Mescam G, Calabrò F, Berdah J, Hasbini A, Ricci F, Hennequin C, Ribault H, Foulon S, Fizazi K. 1421P Effect of abiraterone-prednisone in metastatic castration-sensitive prostate cancer (mCSPC) with neuroendocrine and very high-risk features in the PEACE-1 trial. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.1907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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2
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Marsolier J, Prompsy P, Durand A, Lyne AM, Landragin C, Trouchet A, Bento ST, Eisele A, Foulon S, Baudre L, Grosselin K, Bohec M, Baulande S, Dahmani A, Sourd L, Letouzé E, Salomon AV, Marangoni E, Perié L, Vallot C. H3K27me3 conditions chemotolerance in triple-negative breast cancer. Nat Genet 2022; 54:459-468. [PMID: 35410383 PMCID: PMC7612638 DOI: 10.1038/s41588-022-01047-6] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Accepted: 03/04/2022] [Indexed: 12/11/2022]
Abstract
The persistence of cancer cells resistant to therapy remains a major clinical challenge. In triple-negative breast cancer, resistance to chemotherapy results in the highest recurrence risk among breast cancer subtypes. The drug-tolerant state seems largely defined by nongenetic features, but the underlying mechanisms are poorly understood. Here, by monitoring epigenomes, transcriptomes and lineages with single-cell resolution, we show that the repressive histone mark H3K27me3 (trimethylation of histone H3 at lysine 27) regulates cell fate at the onset of chemotherapy. We report that a persister expression program is primed with both H3K4me3 (trimethylation of histone H3 at lysine 4) and H3K27me3 in unchallenged cells, with H3K27me3 being the lock to its transcriptional activation. We further demonstrate that depleting H3K27me3 enhances the potential of cancer cells to tolerate chemotherapy. Conversely, preventing H3K27me3 demethylation simultaneously to chemotherapy inhibits the transition to a drug-tolerant state, and delays tumor recurrence in vivo. Our results highlight how chromatin landscapes shape the potential of cancer cells to respond to initial therapy.
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Affiliation(s)
- Justine Marsolier
- CNRS UMR3244, Institut Curie, PSL University, Paris, France,Translational Research Department, Institut Curie, PSL University, Paris, France
| | - Pacôme Prompsy
- CNRS UMR3244, Institut Curie, PSL University, Paris, France,Translational Research Department, Institut Curie, PSL University, Paris, France
| | - Adeline Durand
- CNRS UMR3244, Institut Curie, PSL University, Paris, France,Translational Research Department, Institut Curie, PSL University, Paris, France
| | - Anne-Marie Lyne
- CNRS UMR168, Institut Curie, PSL University, Sorbonne University, Paris, France
| | - Camille Landragin
- CNRS UMR3244, Institut Curie, PSL University, Paris, France,Translational Research Department, Institut Curie, PSL University, Paris, France
| | - Amandine Trouchet
- CNRS UMR3244, Institut Curie, PSL University, Paris, France,Single Cell Initiative, Institut Curie, PSL University, Paris, France
| | | | - Almut Eisele
- CNRS UMR168, Institut Curie, PSL University, Sorbonne University, Paris, France
| | - Sophie Foulon
- CNRS UMR8231, ESPCI Paris, PSL University, Paris, France
| | - Léa Baudre
- CNRS UMR3244, Institut Curie, PSL University, Paris, France,Translational Research Department, Institut Curie, PSL University, Paris, France
| | - Kevin Grosselin
- CNRS UMR8231, ESPCI Paris, PSL University, Paris, France,HiFiBio SAS, Paris, France,Current Affiliation: Broad Institute of MIT and Harvard, Cambridge MA, USA
| | - Mylène Bohec
- Single Cell Initiative, Institut Curie, PSL University, Paris, France,Genomics of Excellence (ICGex) Platform, Institut Curie, PSL University, Paris, France
| | - Sylvain Baulande
- Single Cell Initiative, Institut Curie, PSL University, Paris, France,Genomics of Excellence (ICGex) Platform, Institut Curie, PSL University, Paris, France
| | - Ahmed Dahmani
- Translational Research Department, Institut Curie, PSL University, Paris, France
| | - Laura Sourd
- Translational Research Department, Institut Curie, PSL University, Paris, France
| | - Eric Letouzé
- Functional Genomics of Solid Tumors laboratory, Centre de Recherche des Cordeliers, Sorbonne University, Inserm, USPC, Paris Descartes University, Paris Diderot University, Paris, France
| | - Anne-Vincent Salomon
- Pathology-Genetics-Immunology Department, Institut Curie, PSL Research University, Paris, France,INSERM U934, Institut Curie, PSL Research University, Paris, France
| | - Elisabetta Marangoni
- Translational Research Department, Institut Curie, PSL University, Paris, France
| | - Leïla Perié
- CNRS UMR168, Institut Curie, PSL University, Sorbonne University, Paris, France
| | - Céline Vallot
- CNRS UMR3244, Institut Curie, PSL University, Paris, France. .,Translational Research Department, Institut Curie, PSL University, Paris, France.
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3
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Hutchinson S, Foulon S, Crouzols A, Menafra R, Rotureau B, Griffiths AD, Bastin P. The establishment of variant surface glycoprotein monoallelic expression revealed by single-cell RNA-seq of Trypanosoma brucei in the tsetse fly salivary glands. PLoS Pathog 2021; 17:e1009904. [PMID: 34543350 PMCID: PMC8509897 DOI: 10.1371/journal.ppat.1009904] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 10/12/2021] [Accepted: 08/17/2021] [Indexed: 12/27/2022] Open
Abstract
The long and complex Trypanosoma brucei development in the tsetse fly vector culminates when parasites gain mammalian infectivity in the salivary glands. A key step in this process is the establishment of monoallelic variant surface glycoprotein (VSG) expression and the formation of the VSG coat. The establishment of VSG monoallelic expression is complex and poorly understood, due to the multiple parasite stages present in the salivary glands. Therefore, we sought to further our understanding of this phenomenon by performing single-cell RNA-sequencing (scRNA-seq) on these trypanosome populations. We were able to capture the developmental program of trypanosomes in the salivary glands, identifying populations of epimastigote, gamete, pre-metacyclic and metacyclic cells. Our results show that parasite metabolism is dramatically remodeled during development in the salivary glands, with a shift in transcript abundance from tricarboxylic acid metabolism to glycolytic metabolism. Analysis of VSG gene expression in pre-metacyclic and metacyclic cells revealed a dynamic VSG gene activation program. Strikingly, we found that pre-metacyclic cells contain transcripts from multiple VSG genes, which resolves to singular VSG gene expression in mature metacyclic cells. Single molecule RNA fluorescence in situ hybridisation (smRNA-FISH) of VSG gene expression following in vitro metacyclogenesis confirmed this finding. Our data demonstrate that multiple VSG genes are transcribed before a single gene is chosen. We propose a transcriptional race model governs the initiation of monoallelic expression. African trypanosomes are parasitic protists which cause endemic disease in sub-Saharan Africa. To evade mammalian immune responses the parasite has developed a system of antigenic variation, where the surface of the cell is covered in a tightly packed coat of variant surface glycoproteins (VSGs). Each cell expresses only one variant surface glycoprotein at a time, and this is periodically switched to evade new antibodies. The process of singular gene expression is termed monoallelic expression and this has two components, establishment and maintenance, i.e. how a single gene is selected for expression and how its singular expression is maintained throughout successive generations. The establishment of monoallelic VSG gene expression occurs in the salivary gland of the tsetse fly vector, although this process is not well understood. We used single cell gene expression profiling applied to thousands of single cells in the salivary gland of the fly. We show that in order to select a single gene, trypanosomes initially transcribe multiple VSGs before a single gene is selected for high-level expression. We propose a model where this process is driven by a race to accumulate transcription factors at a single VSG gene.
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Affiliation(s)
- Sebastian Hutchinson
- Trypanosome Cell Biology Unit and INSERM U1201, Institut Pasteur, Paris, France
- * E-mail:
| | - Sophie Foulon
- Laboratoire de Biochimie, CBI, ESPCI Paris, Université PSL, CNRS UMR 8231, Paris, France
| | - Aline Crouzols
- Trypanosome Cell Biology Unit and INSERM U1201, Institut Pasteur, Paris, France
| | - Roberta Menafra
- Laboratoire de Biochimie, CBI, ESPCI Paris, Université PSL, CNRS UMR 8231, Paris, France
| | - Brice Rotureau
- Trypanosome Cell Biology Unit and INSERM U1201, Institut Pasteur, Paris, France
| | - Andrew D. Griffiths
- Laboratoire de Biochimie, CBI, ESPCI Paris, Université PSL, CNRS UMR 8231, Paris, France
| | - Philippe Bastin
- Trypanosome Cell Biology Unit and INSERM U1201, Institut Pasteur, Paris, France
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4
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Colomba E, Jonas S, Eymard JC, Delva R, Brachet P, Neuzillet Y, Penel N, Roubaud G, Bompas E, Mahammedi H, Longo R, Helissey C, Barthelemy P, Borchiellini D, Hasbini A, Priou F, Saldana C, Voog E, Foulon S, Fizazi K. 603P Objective computerized cognitive assessment in men with metastatic castrate-resistant prostate cancer (mCRPC) randomly receiving darolutamide or enzalutamide in the ODENZA trial. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.1116] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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5
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Blanchard P, Foulon S, Artignan X, Carles J, Ronchin P, Gizzi M, Villa Freixa S, Valdagni R, Sargos P, Marques Da Costa L, Duberge T, Guillot A, Latorzeff I, Gallardo E, Sáez M, Abadie-Lacourtoisie S, Bennamoun M, Hasbini A, Tantot F, Fizazi K. 646TiP A randomized phase III, factorial design, of cabazitaxel and pelvic radiotherapy in patients with localized prostate cancer and high-risk features of relapse: The PEACE 2 trial from Unicancer. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.1159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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6
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Fulton R, Gan J, Lu YY, Crivello J, Duda Z, Wang Z, Silver R, Staskus A, Ortega C, Ellouze S, George C, Foulon S, Xu W, Cai X, Pi J, Lee D, Manne M, Jin R, Wang Y, Zhang H, Beltraminelli N, Adrian F, Petit R, Schweizer L, Raue A. Abstract 1882: Clinical approach and biomarker strategy for HFB301001, a novel OX40 agonistic antibody. Cancer Res 2021. [DOI: 10.1158/1538-7445.am2021-1882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Agonist OX40 antibodies have shown promising pre-clinical activities, but their clinical activities have been limited thus far. Several reasons may account for this limited clinical activity, including sub-optimal antibody design, dose selection, and lack of a biomarker strategy for indication selection and patient enrichment. Previous clinical trials selected doses that maximized receptor occupancy, but some patients responded at lower doses, indicating nuances to choosing the correct therapeutic doses for an agonist antibody. In addition, preclinical work has demonstrated a so-called “hook” effect whereby agonist activity decreases at higher concentrations, which further emphasizes the need to develop a novel anti-OX40 therapeutic antibody that addresses the previously encountered challenges.
HFB301001 is a novel human IgG1 agonist antibody that binds to a unique epitope on OX40. This allows for agonistic activity that does not compete with the endogenous OX40 ligand. Relative to other clinical stage OX40 antibodies, HFB301001 has reduced OX40 downregulation following co-stimulation of T cells, and it has demonstrated superior in vivo anti-tumor activity and pharmacodynamic immune modulation in a human OX40 knock-in mouse model. HFB301001 is well tolerated in cynomolgus monkeys. To progress into clinical studies, we have determined human dose projections for clinical evaluation of HFB301001 using PKPD modeling, serum exposure in non-human primates, antitumor efficacy in mouse models and immune cell pharmacodynamics. We also took advantage of Fc variants to delineate the relative contributions of Treg depletion versus enhancing T cell activity by agonism to efficacy of HFB301001. To further enhance probability of success (POS) in clinical studies, we are applying our single-cell Drug Intelligent Science (DIS™) platform to rationally identify cancer indications and to define novel predictive response biomarkers. We have used single-cell profiling to identify unique tumor-infiltrating T cell signatures that may help identify patients more likely to response to HFB301001 treatment, inform indication selection, and establish a patient stratification biomarker strategy. Finally, we show here our phase I trial design for HFB301001 that implements these findings.
In conclusion, HFB301001 is a highly differentiated therapeutic antibody which is well positioned to enter a global, multi-center Phase I clinical trial to explore optimal biologically active dose and evaluate predictive biomarker hypotheses. Here, we present results supporting the rationale for indication selection, biomarker identification, dose selection, and phase I clinical trial design.
Citation Format: Ross Fulton, Jinping Gan, Yun-Yueh Lu, Julianna Crivello, Zachery Duda, Zhiyuan Wang, Rebecca Silver, Alexandra Staskus, Charina Ortega, Sami Ellouze, Carine George, Sophie Foulon, Wenhua Xu, Xing Cai, Joyce Pi, Dean Lee, Monika Manne, Ruina Jin, Yuan Wang, Hongkai Zhang, Nicola Beltraminelli, Francisco Adrian, Robert Petit, Liang Schweizer, Andreas Raue. Clinical approach and biomarker strategy for HFB301001, a novel OX40 agonistic antibody [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2021; 2021 Apr 10-15 and May 17-21. Philadelphia (PA): AACR; Cancer Res 2021;81(13_Suppl):Abstract nr 1882.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | - Wenhua Xu
- 1HiFiBiO Therapeutics, Cambridge, MA
| | - Xing Cai
- 1HiFiBiO Therapeutics, Cambridge, MA
| | - Joyce Pi
- 1HiFiBiO Therapeutics, Cambridge, MA
| | - Dean Lee
- 1HiFiBiO Therapeutics, Cambridge, MA
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7
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Wei S, Fulton R, Lu YY, Zhang Q, Zhou H, Raue A, Chen M, Xu W, Cai X, Crivello J, Duda Z, Wang Z, Silver R, Staskus A, Ortega C, Ellouze S, George C, Foulon S, Lee D, Manne M, Beltraminelli N, Gan J, Adrian F, Schweizer L, Watkins-Yoon J. Abstract 1883: Mechanism of action and biomarker strategy for HFB200301, an anti-TNFR2 agonist antibody for the treatment of cancer. Cancer Res 2021. [DOI: 10.1158/1538-7445.am2021-1883] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Despite the success of immune check point inhibition, identification of other pathways capable of modulating the immune response against the tumor remains challenging. T-cell co-stimulation has been investigated with limited clinical success so far due in part to the fine tuning required for agonist antibodies against those co-stimulatory receptors and to the lack of biomarkers to facilitate the selection of patients likely to benefit from T-cell co-stimulation. TNFR2 belongs to the TNFR family of costimulatory molecules, and its expression on tumor infiltrating lymphocytes across a wide range of tumors make it an attractive target for T-cell co-stimulation. Recently, we identified HFB200301, an anti-TNFR2 antibody with Fc-independent agonist activity that does not block TNFR2 interaction with TNFα. HFB200301 activates CD4+, CD8+ T cells, and NK cells in vitro. In vivo, HFB200301 demonstrated potent single agent anti-tumor activity in syngeneic tumor models and can further increase the antitumor activity in combination with PD-1 blockade.
To understand the immunological basis for the anti-tumor efficacy of HFB200301, we investigated the pharmacodynamic effects of HFB200301 in syngeneic mouse tumor models, including immuno-phenotyping and receptor occupancy of tumor infiltrating cells. In hTNFR2 knock-in mice bearing MC38 tumors, HFB200301 induces expansion of CD4+ and CD8+ T cells, and NK cells in the tumor micro-environment without affecting regulatory T cell numbers. We also demonstrate that the anti-tumor efficacy of HFB200301 is correlated with receptor occupancy and circulating soluble TNFR2 in a dose-dependent manner in this model.
To discover predictive biomarkers of response to HFB200301, we used primary tumor samples and our proprietary Drug Intelligent Science (DIS™) single-cell platform to establish an immune-related signature. Single-cell RNA sequencing and clonotype barcoding of ex-vivo tumor cultures treated with HFB200301 were used to identify unique T cell profiles with a T cell centric gene panel. These unique T cell profiles may help identifying patients more likely to respond to HFB200301 treatment.
In summary, HFB200301 exhibits a unique mechanism of action mainly relying on its agonistic activity on several effector cell types in tumor micro-environment that we expect will benefit a patient population selected with a unique biomarker signature. HFB200301 is currently in preclinical development and a biomarker-driven Phase 1 clinical study is projected for 2021.
Citation Format: Shuo Wei, Ross Fulton, Yun-Yueh Lu, Qian Zhang, He Zhou, Andreas Raue, Mingjie Chen, Wenhua Xu, Xing Cai, Juliana Crivello, Zachary Duda, Zhiyuan Wang, Rebecca Silver, Alexandra Staskus, Charina Ortega, Sami Ellouze, Carine George, Sophie Foulon, Dean Lee, Monika Manne, Nicola Beltraminelli, Jinping Gan, Francisco Adrian, Liang Schweizer, Jennifer Watkins-Yoon. Mechanism of action and biomarker strategy for HFB200301, an anti-TNFR2 agonist antibody for the treatment of cancer [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2021; 2021 Apr 10-15 and May 17-21. Philadelphia (PA): AACR; Cancer Res 2021;81(13_Suppl):Abstract nr 1883.
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Affiliation(s)
- Shuo Wei
- HiFiBio Therapeutics, Cambridge, MA
| | | | | | | | - He Zhou
- HiFiBio Therapeutics, Cambridge, MA
| | | | | | | | - Xing Cai
- HiFiBio Therapeutics, Cambridge, MA
| | | | | | | | | | | | | | | | | | | | - Dean Lee
- HiFiBio Therapeutics, Cambridge, MA
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8
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Le Cesne A, Blay JY, Cupissol D, Italiano A, Delcambre C, Penel N, Isambert N, Chevreau C, Bompas E, Bertucci F, Chaigneau L, Piperno-Neumann S, Salas S, Rios M, Guillemet C, Bay JO, Ray-Coquard I, Haddag L, Bonastre J, Kapso R, Fraslin A, Bouvet N, Mir O, Foulon S. A randomized phase III trial comparing trabectedin to best supportive care in patients with pre-treated soft tissue sarcoma: T-SAR, a French Sarcoma Group trial. Ann Oncol 2021; 32:1034-1044. [PMID: 33932507 DOI: 10.1016/j.annonc.2021.04.014] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 04/20/2021] [Accepted: 04/22/2021] [Indexed: 01/18/2023] Open
Abstract
BACKGROUND The French Sarcoma Group assessed the efficacy, safety, and quality of life (QoL) of trabectedin versus best supportive care (BSC) in patients with advanced soft tissue sarcoma (STS). PATIENTS AND METHODS This randomized, multicenter, open-label, phase III study included adults with STS who progressed after 1-3 prior treatment lines. Patients were randomized (1 : 1) to receive trabectedin 1.5 mg/m2 every 3 weeks or BSC, stratified into L-STS (liposarcoma/leiomyosarcoma) and non-L-STS groups (other histotypes). Patients from the BSC arm were allowed to cross over to trabectedin at progression. The primary efficacy endpoint was progression-free survival (PFS) confirmed by blinded central review and analyzed in the intention-to-treat population. RESULTS Between 26 January 2015 and 5 November 2015, 103 heavily pre-treated patients (60.2% with L-STS) from 16 French centers were allocated to receive trabectedin (n = 52) or BSC (n = 51). Median PFS was 3.1 months [95% confidence interval (CI) 1.8-5.9 months] in the trabectedin arm versus 1.5 months (0.9-2.6 months) in the BSC arm (hazard ratio = 0.39, 95% CI 0.24-0.64, P < 0.001) with benefits observed across almost all analyzed subgroups, but particularly in patients with L-STS (5.1 versus 1.4 months, P = 0.0001). Seven patients (13.7%) in the trabectedin arm (all with L-STS) achieved a partial response, while no objective responses were observed in the BSC arm (P = 0.004). The most common grade 3/4 adverse events were neutropenia (44.2% of patients), leukopenia (34.6%), and transaminase increase (32.7%). Health-related 30-item core European Organization for the Research and Treatment of Cancer Quality-of-Life Questionnaire evidenced no statistical differences between the arms for any domain and at any time point. After progression, 91.8% of patients crossed over from BSC to trabectedin. CONCLUSION Trabectedin demonstrates superior disease control to BSC without impairing QoL in patients with recurrent STS of multiple histologies, with greater impact in patients with L-STS.
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Affiliation(s)
- A Le Cesne
- Medical Oncology Department, Gustave Roussy, Villejuif, France.
| | - J-Y Blay
- Medical Oncology Department, Centre Léon Bérard and Claude Bernard University, Lyon, France
| | - D Cupissol
- Medical Oncology Department, Centre Val d'Aurelle, Montpellier, France
| | - A Italiano
- Medical Oncology Department, Institut Bergonié, Bordeaux, France
| | - C Delcambre
- Medical Oncology Department, Centre François Baclesse, Caen, France
| | - N Penel
- Medical Oncology Department, Centre Oscar Lambret and Lille University, Lille, France
| | - N Isambert
- Medical Oncology Department, Centre Georges-François Leclerc, Dijon, France
| | - C Chevreau
- Medical Oncology Department, Institut Claudius Regaud, Toulouse, France
| | - E Bompas
- Medical Oncology Department, Centre René Gauduchau, Nantes, France
| | - F Bertucci
- Medical Oncology Department, Institut Paoli-Calmettes, Marseille, France
| | - L Chaigneau
- Medical Oncology Department, Hôpital Jean Minjoz, Besancon, France
| | | | - S Salas
- Medical Oncology Department, Hôpital La Timone, Marseille, France
| | - M Rios
- Medical Oncology Department, Institut de Cancerologie de Lorraine, Nancy, France
| | - C Guillemet
- Medical Oncology Department, Centre Henri Becquerel, Rouen, France
| | - J-O Bay
- Medical Oncology Department, Centre Jean Perrin, Clermont Ferrand, France
| | - I Ray-Coquard
- Medical Oncology Department, Centre Léon Bérard and Claude Bernard University, Lyon, France
| | - L Haddag
- Department of Radiology, Gustave Roussy, Villejuif, France
| | - J Bonastre
- Department of Biostatistics and Epidemiology, Gustave Roussy, Villejuif, France; Oncostat U1018, Inserm, University Paris-Saclay, Labeled Ligue Contre le Cancer, Villejuif, France
| | - R Kapso
- Department of Biostatistics and Epidemiology, Gustave Roussy, Villejuif, France; Oncostat U1018, Inserm, University Paris-Saclay, Labeled Ligue Contre le Cancer, Villejuif, France
| | - A Fraslin
- Department of Biostatistics and Epidemiology, Gustave Roussy, Villejuif, France; Oncostat U1018, Inserm, University Paris-Saclay, Labeled Ligue Contre le Cancer, Villejuif, France
| | - N Bouvet
- Department of Biostatistics and Epidemiology, Gustave Roussy, Villejuif, France
| | - O Mir
- Medical Oncology Department, Gustave Roussy, Villejuif, France
| | - S Foulon
- Department of Biostatistics and Epidemiology, Gustave Roussy, Villejuif, France; Oncostat U1018, Inserm, University Paris-Saclay, Labeled Ligue Contre le Cancer, Villejuif, France
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9
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Ameta S, Arsène S, Foulon S, Saudemont B, Clifton BE, Griffiths AD, Nghe P. Darwinian properties and their trade-offs in autocatalytic RNA reaction networks. Nat Commun 2021; 12:842. [PMID: 33558542 PMCID: PMC7870898 DOI: 10.1038/s41467-021-21000-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Accepted: 01/08/2021] [Indexed: 12/18/2022] Open
Abstract
Discovering autocatalytic chemistries that can evolve is a major goal in systems chemistry and a critical step towards understanding the origin of life. Autocatalytic networks have been discovered in various chemistries, but we lack a general understanding of how network topology controls the Darwinian properties of variation, differential reproduction, and heredity, which are mediated by the chemical composition. Using barcoded sequencing and droplet microfluidics, we establish a landscape of thousands of networks of RNAs that catalyze their own formation from fragments, and derive relationships between network topology and chemical composition. We find that strong variations arise from catalytic innovations perturbing weakly connected networks, and that growth increases with global connectivity. These rules imply trade-offs between reproduction and variation, and between compositional persistence and variation along trajectories of network complexification. Overall, connectivity in reaction networks provides a lever to balance variation (to explore chemical states) with reproduction and heredity (persistence being necessary for selection to act), as required for chemical evolution.
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Affiliation(s)
- Sandeep Ameta
- Laboratoire de Biochimie, ESPCI Paris, Université PSL, CNRS UMR 8231, 10 Rue Vauquelin, Paris, France
- Simons Centre for the Study of Living Machines, National Centre for Biological Sciences (TIFR), Bangalore, India
| | - Simon Arsène
- Laboratoire de Biochimie, ESPCI Paris, Université PSL, CNRS UMR 8231, 10 Rue Vauquelin, Paris, France
| | - Sophie Foulon
- Laboratoire de Biochimie, ESPCI Paris, Université PSL, CNRS UMR 8231, 10 Rue Vauquelin, Paris, France
| | - Baptiste Saudemont
- Laboratoire de Biochimie, ESPCI Paris, Université PSL, CNRS UMR 8231, 10 Rue Vauquelin, Paris, France
| | - Bryce E Clifton
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA, USA
| | - Andrew D Griffiths
- Laboratoire de Biochimie, ESPCI Paris, Université PSL, CNRS UMR 8231, 10 Rue Vauquelin, Paris, France.
| | - Philippe Nghe
- Laboratoire de Biochimie, ESPCI Paris, Université PSL, CNRS UMR 8231, 10 Rue Vauquelin, Paris, France.
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10
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Cerbone L, Combarel D, Geraud A, Foulon S, Costa Silva CA, Colomba-Blameble E, Derosa L, Guida A, Flippot R, Carril-Ajuria L, Mir O, Escudier B, Paci A, Albiges L. 727P Cabozantinib (Cabo) concentration (Cmin) association with toxicity (tox) and treatment failure in metastatic renal cell carcinoma (mRCC) patients: The MONICA study. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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11
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Foulon S, Cony-Makhoul P, Guerci-Bresler A, Delord M, Solary E, Monnereau A, Bonastre J, Tubert-Bitter P. Prévalence de la leucémie myéloïde chronique en 2014 en France à partir des données du Système national des données de santé. Rev Epidemiol Sante Publique 2019. [DOI: 10.1016/j.respe.2019.03.082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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12
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Le Cesne A, Kapso Kapnang R, Foulon S, Bonastre J. Health-related quality of life in patients with advanced soft tissue sarcoma (ASTS): Results from the TSAR randomized phase III trial of the French Sarcoma Group. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy299.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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13
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Lapage L, Foulon S, Berti D, Poels P, Hoekman B, Vermeulen J, Ector J, Haemers P, Voros G, Garweg C, Willems R. 63Outsourcing telecardiology services: the possible decline in clinical workload could be lower than expected. Europace 2018. [DOI: 10.1093/europace/euy015.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
| | - S Foulon
- University Hospitals (UZ) Leuven, Leuven, Belgium
| | - D Berti
- University Hospitals (UZ) Leuven, Leuven, Belgium
| | - P Poels
- University Hospitals (UZ) Leuven, Leuven, Belgium
| | - B Hoekman
- University Hospitals (UZ) Leuven, Leuven, Belgium
| | - J Vermeulen
- University Hospitals (UZ) Leuven, Leuven, Belgium
| | - J Ector
- University of Leuven, Department of cardiovascular sciences, Leuven, Belgium
| | - P Haemers
- University Hospitals (UZ) Leuven, Leuven, Belgium
| | - G Voros
- University Hospitals (UZ) Leuven, Leuven, Belgium
| | - C Garweg
- University Hospitals (UZ) Leuven, Leuven, Belgium
| | - R Willems
- University of Leuven, Department of cardiovascular sciences, Leuven, Belgium
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14
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Lapage L, Foulon S, Berti D, Poels P, Hoekman B, Vermeulen J, Ector J, Haemers P, Voros G, Garweg C, Willems R. P1227A prospective analysis of the detailed workload of a telecardiology service. Europace 2018. [DOI: 10.1093/europace/euy015.708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
| | - S Foulon
- University Hospitals (UZ) Leuven, Leuven, Belgium
| | - D Berti
- University Hospitals (UZ) Leuven, Leuven, Belgium
| | - P Poels
- University Hospitals (UZ) Leuven, Leuven, Belgium
| | - B Hoekman
- University Hospitals (UZ) Leuven, Leuven, Belgium
| | - J Vermeulen
- University Hospitals (UZ) Leuven, Leuven, Belgium
| | - J Ector
- University of Leuven, Department of cardiovascular sciences, Leuven, Belgium
| | - P Haemers
- University Hospitals (UZ) Leuven, Leuven, Belgium
| | - G Voros
- University Hospitals (UZ) Leuven, Leuven, Belgium
| | - C Garweg
- University Hospitals (UZ) Leuven, Leuven, Belgium
| | - R Willems
- University of Leuven, Department of cardiovascular sciences, Leuven, Belgium
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15
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Lapage L, Foulon S, Berti D, Poels P, Hoekman B, Vermeulen J, Ector J, Haemers P, Voros G, Garweg C, Willems R. 64Patient driven contacts: an unforseen burden for a telecardiology service. Europace 2018. [DOI: 10.1093/europace/euy015.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
| | - S Foulon
- University Hospitals (UZ) Leuven, Leuven, Belgium
| | - D Berti
- University Hospitals (UZ) Leuven, Leuven, Belgium
| | - P Poels
- University Hospitals (UZ) Leuven, Leuven, Belgium
| | - B Hoekman
- University Hospitals (UZ) Leuven, Leuven, Belgium
| | - J Vermeulen
- University Hospitals (UZ) Leuven, Leuven, Belgium
| | - J Ector
- University of Leuven, Department of cardiovascular sciences, Leuven, Belgium
| | - P Haemers
- University Hospitals (UZ) Leuven, Leuven, Belgium
| | - G Voros
- University Hospitals (UZ) Leuven, Leuven, Belgium
| | - C Garweg
- University Hospitals (UZ) Leuven, Leuven, Belgium
| | - R Willems
- University of Leuven, Department of cardiovascular sciences, Leuven, Belgium
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16
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Lapage L, Foulon S, Berti D, Poels P, Hoekman B, Vermeulen J, Ector J, Haemers P, Voros G, Garweg C, Willems R. P423A retrospective analysis of the workload in a telecardiology service. Europace 2018. [DOI: 10.1093/europace/euy015.234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
| | - S Foulon
- University Hospitals (UZ) Leuven, Leuven, Belgium
| | - D Berti
- University Hospitals (UZ) Leuven, Leuven, Belgium
| | - P Poels
- University Hospitals (UZ) Leuven, Leuven, Belgium
| | - B Hoekman
- University Hospitals (UZ) Leuven, Leuven, Belgium
| | - J Vermeulen
- University Hospitals (UZ) Leuven, Leuven, Belgium
| | - J Ector
- University of Leuven, Department of cardiovascular sciences, Leuven, Belgium
| | - P Haemers
- University Hospitals (UZ) Leuven, Leuven, Belgium
| | - G Voros
- University Hospitals (UZ) Leuven, Leuven, Belgium
| | - C Garweg
- University Hospitals (UZ) Leuven, Leuven, Belgium
| | - R Willems
- University of Leuven, Department of cardiovascular sciences, Leuven, Belgium
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17
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Blanchard P, Foulon S, Louvel G, Habibian M, Fizazi K. [A randomized controlled trial of metastases-directed treatment in patients with metastatic prostate cancer using stereotactic body irradiation: A GETUG-AFU trial]. Cancer Radiother 2017; 21:491-494. [PMID: 28869198 DOI: 10.1016/j.canrad.2017.06.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Accepted: 06/19/2017] [Indexed: 01/18/2023]
Abstract
The goal of treatment of metastatic prostate cancer remains palliation. The oligometastatic state could be the right time to intensify therapy by introducing metastases directed treatments. The aim of this trial was to evaluate the benefit of radiotherapy to all macroscopic metastatic sites and to the primary disease in patients with hormone sensitive oligometastatic prostate cancer.
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Affiliation(s)
- P Blanchard
- Département de radiothérapie, Gustave-Roussy Cancer Campus, 114, rue Édouard-Vaillant, 94800 Villejuif, France.
| | - S Foulon
- Service de biostatistiques, Gustave-Roussy Cancer Campus, 114, rue Édouard-Vaillant, 94800 Villejuif, France
| | - G Louvel
- Département de radiothérapie, Gustave-Roussy Cancer Campus, 114, rue Édouard-Vaillant, 94800 Villejuif, France
| | - M Habibian
- Groupe d'étude des tumeurs urogénitales, Unicancer, 101, rue de Tolbiac, 75654 Paris cedex 13, France
| | - K Fizazi
- Département de médecine oncologique, Gustave-Roussy Cancer Campus, 114, rue Édouard-Vaillant, 94800 Villejuif, France
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18
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Garweg C, Vandenberk B, Voros G, Ector J, Foulon S, Willems R. P1772Leadless cardiac pacing system as first choice within patients with challenging conditions for conventional pacing. Europace 2017. [DOI: 10.1093/ehjci/eux161.081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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19
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Mouaffak F, Foulon S, Smail F, Willoquet G. Clozapine : les dernières recommandations de la FDA et nous…. Encephale 2016; 42:600-601. [DOI: 10.1016/j.encep.2016.08.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Revised: 07/14/2016] [Accepted: 08/03/2016] [Indexed: 10/21/2022]
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20
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Lavaud P, Gravis G, Legoupil C, Foulon S, Joly F, Oudard S, Priou F, Soulié M, Mourey L, Latorzeff I, Delva R, Krakowski I, Laguerre B, Theodore C, Ferrero JM, Beuzeboc P, Habibian M, Boher J, Tergemina-Clain G, Fizazi K. How should we treat castration-resistant prostate cancer patients who have received androgen deprivation therapy (ADT) plus docetaxel upfront for hormone-sensitive diseae? Mature analysis of the GETUG-AFU 15 phase III trial. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw372.45] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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21
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Foulon S, Weill A, Maura G, Dalichampt M, Debouverie M, Moreau T. Prévalence de la sclérose en plaques en France en 2012 et mortalité associée en 2013 à partir des données du Sniiram-PMSI. Rev Epidemiol Sante Publique 2015. [DOI: 10.1016/j.respe.2015.01.037] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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22
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Foulon S, Farrington P, Benzenine E, Quantin C, Tubert-Bitter P, Escolano S. L’échantillon généraliste des bénéficiaires : un outil pour l’évaluation du risque vaccinal ? Rev Epidemiol Sante Publique 2014. [DOI: 10.1016/j.respe.2014.06.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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23
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Gault N, Foulon S, Guillo S, Tubach F. Plans expérimentaux utilisés dans les études de pharmaco-épidémiologie menées sur bases de données de santé : une revue systématique. Rev Epidemiol Sante Publique 2014. [DOI: 10.1016/j.respe.2014.05.080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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24
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Gaud N, Foulon S, Guillo S, Tubach F. Plans expérimentaux utilisés dans les études de pharmacoépidémiologie sur BDD de santé. Rev Epidemiol Sante Publique 2014. [DOI: 10.1016/j.respe.2013.12.057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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25
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Foulon S, Greacem T, Saïas T, Dugravier R, Guedeney A, Tubach F. Déterminants de l’attrition dans un essai randomisé d’intervention auprès de mères présentant des facteurs de vulnérabilité psychosociale : une étude ancillaire de l’essai CAPEDP. Rev Epidemiol Sante Publique 2014. [DOI: 10.1016/j.respe.2013.12.056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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26
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Dalloz M, Bottin L, Muresan I, Favrole P, Foulon S, Levy P, Drouet T, Marro B, Alamowitch S. Thrombolysis rate and impact of a stroke code: A French hospital experience and a systematic review. J Neurol Sci 2012; 314:120-5. [DOI: 10.1016/j.jns.2011.10.009] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2011] [Revised: 10/02/2011] [Accepted: 10/04/2011] [Indexed: 11/15/2022]
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27
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Ferrand H, Foulon S, Mangiapan G, Naccache JM, Taillé C, Bouaud J, Mayaud C, Cadranel J, Séroussi B, Lioté H. Validation des performances du logiciel Pneumodoc®pour l’aide au diagnostic d’imputabilité médicamenteuse des pneumopathies infiltrantes diffuses. Rev Mal Respir 2012. [DOI: 10.1016/j.rmr.2011.10.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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28
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Lemmens D, Wouters M, Tempere J, Foulon S. Path integral approach to closed-form option pricing formulas with applications to stochastic volatility and interest rate models. Phys Rev E Stat Nonlin Soft Matter Phys 2008; 78:016101. [PMID: 18764014 DOI: 10.1103/physreve.78.016101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2007] [Revised: 05/06/2008] [Indexed: 05/26/2023]
Abstract
We present a path integral method to derive closed-form solutions for option prices in a stochastic volatility model. The method is explained in detail for the pricing of a plain vanilla option. The flexibility of our approach is demonstrated by extending the realm of closed-form option price formulas to the case where both the volatility and interest rates are stochastic. This flexibility is promising for the treatment of exotic options. Our analytical formulas are tested with numerical Monte Carlo simulations.
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Affiliation(s)
- D Lemmens
- TFVS, Universiteit Antwerpen, Universiteitsplein 1, 2610 Antwerpen, Belgium
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29
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Heidbuchel H, van der Merwe N, Adams J, Foulon S, Goethals H, Willems R, Ector H. P-500 Comparative efficacy of bolus intravenous ATP and adenosine on sinus and AV nodal function. Europace 2003. [DOI: 10.1016/eupace/4.supplement_2.b184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022] Open
Affiliation(s)
- H. Heidbuchel
- University Hospital Gasthuisberg, University of Leuven
,
Leuven, Belgium
| | - N. van der Merwe
- University Hospital Gasthuisberg, University of Leuven
,
Leuven, Belgium
| | - J. Adams
- University Hospital Gasthuisberg, University of Leuven
,
Leuven, Belgium
| | - S. Foulon
- University Hospital Gasthuisberg, University of Leuven
,
Leuven, Belgium
| | - H. Goethals
- University Hospital Gasthuisberg, University of Leuven
,
Leuven, Belgium
| | - R. Willems
- University Hospital Gasthuisberg, University of Leuven
,
Leuven, Belgium
| | - H. Ector
- University Hospital Gasthuisberg, University of Leuven
,
Leuven, Belgium
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30
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Foulon S, Brosens F, Devreese JT, Lemmens LF. Density of a gas of spin-polarized fermions in a magnetic field. Phys Rev E Stat Nonlin Soft Matter Phys 2001; 63:016111. [PMID: 11304318 DOI: 10.1103/physreve.63.016111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2000] [Indexed: 05/23/2023]
Abstract
For a fermion gas with equally spaced energy levels that is subjected to a magnetic field, the particle density is calculated. The derivation is based on the path integral approach for identical particles, in combination with the inversion techniques for the generating function of the static response functions. Explicit results are presented for the ground state density as a function of the magnetic field with a number of particles ranging from 1 to 45.
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Affiliation(s)
- S Foulon
- Departement Natuurkunde, Universiteit Antwerpen (UIA), Universiteitsplein 1, B-2610 Antwerpen, Belgium
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