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6 results on '"Geoffrey Rossi"'

1. Hepatic Sarcoidosis: Current Concepts and Treatments

Author

Dominique Valeyre, Marianne Ziol, Geoffrey Rossi, Dominique Roulot, and Matthieu Mahévas

Subjects
Liver Cirrhosis, Pulmonary and Respiratory Medicine, medicine.medical_specialty, Cirrhosis, Sarcoidosis, business.industry, Liver Diseases, Critical Care and Intensive Care Medicine, medicine.disease, Dermatology, Review article, 03 medical and health sciences, 0302 clinical medicine, Liver, 030220 oncology & carcinogenesis, Hypertension, Portal, Humans, Medicine, Portal hypertension, 030211 gastroenterology & hepatology, business, Liver pathology, Pathological, Hepatic sarcoidosis
Abstract

Hepatic sarcoidosis is a relatively common manifestation of extrapulmonary sarcoidosis. It occurs in 20 to 30% of cases and is rarely severe. However, a cluster of patients may develop severe complications such as cirrhosis and portal hypertension. In this review, we describe the current knowledge of clinical, biological, pathological, and radiological features of liver involvement in sarcoidosis and discuss essential clues for management and treatment.

Published
2020
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2. Effect of anakinra versus usual care in adults in hospital with COVID-19 and mild-to-moderate pneumonia (CORIMUNO-ANA-1): a randomised controlled trial

Author

Mathieu Vautier, Florence Tubach, Marion Licois, Estelle Henry, Marie-Alexandra Alyanakian, Julien Poissy, Solaya Chalal, Anne Gysembergh-Houal, Stéphanie Alary, Sophie Diemunsch, Jonathan London, Camille Petit-Hoang, Ruben Benainous, Catherine Metzger, Olivier Benveniste, Hala Semri, Charléne Jouve, Robin Dhote, johann Cailhol, Elise Morawiec, Kristina Beziriganyan, Mathieu Oberlin, Paul Legendre, Hélène François, Claire Davoine, F Louni, Myriam Virlouvet, Stéphane Renaud, Christiane Verny, Bertrand Guidet, Bob Heger, Lara Zafrani, Pierre-Louis Tharaux, Mandy Nizard, Adrien Contejean, Segolene Toquet, Ulrich Clarac, Sylviane Ravato, Gaëtan Deslée, Frédéric De Blay, Christian Richard, Raphaël Porcher, Malikhone Chansombat, Marie Lachatre, Ines Ben-Mabrouk, Matthieu Uzzan, Lauren Demerville, Amélie Servettaz, Annabelle Pourbaix, Philippe Manivet, Fanny Charbonnier, Pierre-Grégoire Guinot, Alexandre Demoule, Nicolas Champtiaux, Nicolas Belaube, Jean-Pierre Riveline, Kamil Chitour, Joseph Emmerich, Arthur Neuschwander, Mickael Henriques, Anne Hutt, Arthur Pavot, Anne Rachline, Elena Fois, Audrey Phibel, Xavier Monnet, Jean-Charles Duclos-Vallée, Félix Ackermann, Maria Pereira, Anne Sophie Korganow, Elodie Drouet, Tabassome Simon, Morgane Faure, Anne Pattyn, Aida Zahrate-Ghoul, Karine Martin, Jean-Jacques Tudesq, Gladys Aratus, Kévin Cardet, Julien Pottecher, Eric Demonsant, Arsène Mekinian, Rémy Gauzit, Julie Smati, Robin Deleris, Jean-Simon Rech, Boris Bienvenu, Nicolas Lefebvre, Elodie Baudry, Nicolas Bonnet, Alexis Régent, François Weill, Lalia Djaghout, Anne Tréhan, Isabelle Lehir, Elena Kiouris, Sophie Renet, Yasmina Mekid, Vanessa Rathouin, David Montani, Annick Tibi, Anne Blanchard, Fanette Denies, Nathalie Menage, Guillaume Becker, Valérie Camara-Clayette, Loic Kassegne, Nathalie Chavarot, Aurélie Clan Hew Wai, Jeremy Arzoine, Louise Bondeelle, Mohamad Zaidan, S Lariven, Laurent Cylly, Edouard Flamarion, Chaouki Bouras, Florence Bellenfant, Melissa Clément, Lola-Jade Palmieri, Marie hélène Pari, Lionel Galicier, Valérie Dejean, Delphine Feyeux, Naima Sguiouar, Anne Bergeron, Laurence Annonay, Anouk Walter-Petrich, Camille Knosp, Laurence Drouard, Thiziri Sadaoui, Julie Delemazure, Antoine Parrot, Carole Burger, Laurence Berard, Nicolas Gambier, Eric Marquis, Isabelle Madeleine, Gwenaël Lorillon, Matthieu Resche-Rigon, Yves Hansmann, Claire Rouzaud, Hélène Gros, Sophie Caillat-Zucman, Bernard Cholley, Celine Wilpotte, Chistophe Willekens, Lydia Suarez, Syllia Belazouz, Valérie Pourchet-Martinez, Dhiaa Meriem Hai, Olivier Collange, Paul Jaubert, Marie-Thérèse Tremorin, Nathalie Marin, Diane Le Pluart, Madona Sakkal, Juliette Djadi-Prat, Alexandre Morel, Agathe Bounhiol, Xavier Jaïs, Nicolas Meyer, Vixra Keo, Michaël Darmont, Benedicte Giroux-Leprieur, Anatole Harrois, Anne Adda, Yaël Amara, Fanny Pommeret, Antony Canellas, Matheus Vieira, Clotilde Le Tiec Le Tiec, Corinne Pernot, Bernard Goichot, Céline Louapre, Roza Rahli, Anne Jacolot, Anne Daguenel-Nguyen, Marie Dubert, Anaïs Razurel, Aurelie Sautereau, Mitja Jevnikar, Pierre Faye, Jeanne CHAUFFiER, Mathieu Jozwiak, Laurent Savale, Florence Patin, Kahina Cheref, Mélanie Dehais, Paul Michel Mertes, Caroline Morbieu, Valérie Paquet, Dominique Roulot, Giovanna Melica, Pauline Jouany, Frédéric Schlemmer, Blandine Lehmann, Pascal Martel, Tomas Urbina, Yazdan Yazdanpanah, Veronique Joly, Damien Bergerot, Claire Courtin, Benjamin Fournier, Guillaume Grailles, Asmaa Mamoune, Caroline Gaudefroy, Charlotte Kaeuffer, Bruno Crestani, Thinhinane Bariz, C Rioux, Karine Celli Lebras, Sophie Granville, Marion Bouhris, Hugues Cordel, Jean-Marie Michot, Mohamed Belloul, Nadège Lemarié, Philippe Dieudé, Sylvie Le Gac, Matthieu Mahévas, Pascal Richette, Anaïs Codorniu, Camille Rolland-Debord, Edouard Lefèvre, Sophie-Rym Hamada, Tristan Martin, Vincent Castelain, Aude Rigolet, Valentin Greigert, Gaelle Leroux, Simon Valayer, Eliane Bertrand, Eric Vicaut, Stéphane Brin, Jacques-Eric Gottenberg, Olivier Clovet, Marc Bardou, Muriel Fartoukh, Valentina Isernia, Ada Clarke, Bao Phung, Grégoire Martin de Frémont, Jeanne Meunier, Gonçalo Boleto, David Lebeaux, Hassan Tarhini, Asmaa Mabrouki, Pascaline Choinier, Etienne Canouï, Eric D'Ortenzio, Constance Guillaud, Corine Nyanou, Alexandre Moores, Linda Gimeno, Victoire De Lastours, F-Xavier Lescure, Claire Montlahuc, Sophie Georgin-Lavialle, A Soria, Xavier Mariette, Sophie Ismael, Prissile Bakouboula, Olivier Lambotte, Jérémie Zerbit, Aude Jacob, Z Julia, Nathalie Dournon, Marthe Rigal, Mireille Adda, Nathan Ebstein, Frédéric Duée, Helene Chambrin-Lauvray, Ramdane Meftali, Hélène Lafoeste, Coralie Bloch Queyrat, Sabrina Brahmi, Catherine Le Bourlout, Nicolas Noel, Emmanuelle Guillot, Hakim Tayebi, Sandrine Briois, Anne-Lise Pouliquen, Lakhdar Mameri, Sophie-Caroline Sacleux, Nathalie Rozensztajn, Lelia Escaut, Clément Jourdaine, Cédric Pierron, Marc Garnier, Yves Cohen, Abdellatif Tazi, Maxence Decavele, Paul Henri Grisot, Patrice Cacoub, Laure Allanic, Amira Benattia, Martin Siguier, Luca Semerano, Jean-Sébastien Hulot, Jean-Jacques Mourad, Sara Sambin, Miguel Alejandro Vasquez-Ibarra, Nabil Raked, Christine Lemagner, Martin Dres, Clara Campos-Vega, Tali-Anne Szwebel, Benjamin Chaigne, Emmanuel Andrès, Gabriel Steg, Frédéric Blanc, Isabelle Peigney, Catherine Fauvaux, Côme Bureau, Samira Saleh-Mghir, Julie Jambon, Pierre Dupland, Anne Lise Jegu, Mamadou Salif Cisse, Damien Roux, Moez Jallouli, Philippe Blanche, Sébastien Cavelot, Sophie Ohlmann-Caillard, Louise-Laure Mariani, Adrien Michon, Alain Wynckel, Saskia Flamand, Safaa Nemlaghi, Benjamin G. Chousterman, Geoffroy Volle, Cécile Kedzia, Fanny Domont, Lee S. Nguyen, Férial Berbour, Pierre Diemunsch, Celine Dupré, Etienne Lengliné, Claire Tantet, Gaël Leprun, Sara Virolle, Perrine Guillaume-Jugnot, Soumeya Hammal, B. Duchemann, Mathilde Le Marchand, Vincent Poindron, Victor Lancon, Ruxandra Burlacu, Guillaume Lefèvre, Kamyl Baghli, Emilia Stan, Yann Nguyen, Olivier Sanchez, Olivier Sitbon, Loren Soyez-Herkert, Fanny Defrancq, Véronique Vigna, Aurélien Guffroy, Martine Meunier, Pierre Mora, Léa Resmini, Liem Binh Luong Nguyen, Jean-Luc Diehl, Johanna Oziel, Emmanuelle Bugnet, Lamiae Grimaldi, Olivia Daconceicao, Marie Matignon, Mourad Djadel, Yasmine Messaoudi, Hassan Joumaa, Isabelle Dusanter, Sarah Benghanem, Julien Mayaux, Marc Michel, Claire Pernin, Antoine Gros, Nassim Mahtal, Philippe Benoit, Cloé Comarmond, Laurence Lecomte, Patricia Senet, Sebastien Abad, Jérôme Pacanowski, Céline Leplay, Claire Aguilar, Cédric Sublon, Jesuthasan Denis, Régis Peffault de Latour, Gabrielle Archer, Alain Fourreau, Emmanuelle Blin, Lise Bernard, Alexandra Beurton, Alexandre Buffet, Pierre Le Guen, Clairelyne Dupin, Olivier Fain, A Gervais, Marc Humbert, Yves Allenbach, Alexandre Bourgoin, Agnes Maurer, Eric Noll, Virginie Elisee, Adrien Mirouse, Cecile Larcheveque, Carine Karachi, Samy Figueiredo, Hakim Meddah, Greggory Ducrocq, Jeanne Goupil de Bouille, Awa Ndiaye, Jessica Krause le Garrec, Maxime Dougados, Yasmina Ferfar, Damien Vimpere, Olivier Olivier, Annabelle Stoclin, Jean-Louis Teboul, Ridha Belilita, Serge Bureau, Naura Gamany, Emeline Colomba, Baptiste Duceau, Philippe Ravaud, Corinne Guerin, Florence Morin, Pélagie Thibaut, Younes Keroumi, Julie Chas, Elisabeth Coupez, Laetitia Languille, Mathias Cornic, Jean-Michel Molina, Caroline Pradon, Alison Klasen, Zakaria Ait Hamou, Armand Mekontso-Dessaps, Yurdagul Uzunhan, Samir Hamiria, Anne Godier, Elsa Feredj, Nessima Yelles, Jean-Benoit Arlet, Christine Broissand, Belkacem Asselate, Jaouad Benhida, Julien Le Marec, Nawal Derridj, Laurène Deconinck, A. Dossier, Eric Oksenhendler, Eva Chatron, Lucie Aunay, Candice Estellat, Julie Fillon, Marie Antignac, Jade Ghosn, Ilias Koumis, David Schmitz, Domitille Molinari, Soraya Fellahi, Bruno Mégarbane, Aline Frazier, Ramon Junquera, Vincent Provitolo, Marie Lecronier, Dimitri Fremont, Pierrick Le Borgne, Emmanuel Weiss, Faouzi Saliba, Stéphan Pavy, Geoffrey Rossi, Chloe McAvoy, Eric Mariotte, Dorothee Vallois, Sabrine Ouamri, Pierre Tissieres, Luc Mouthon, Blandine Denis, Celine Comparon, Emmanuelle Sacco, Frédéric Pène, Marjolaine Morgand, Vasco Honsel, Laure Choupeaux, Bruno Mourvillier, Ewa Kozaliewicz, Marie-Hélène Legros, Isabelle Debrix, Gabriel Nisand, Julien Chabert, Juliette Camuset, Stéphane Jauréguiberry, Lynda Chalal, Marine Livrozet, Lucie Biard, Elodie Perrodeau, Brigitte Sabatier, Raphael Borie, Rosa Da Silva, Nathalie Costedoat-Chalumeau, Emmanuel Chatelus, Jean-Christophe Corvol, Nathalie De Castro, David Boutboul, Benjamin Planquette, Anne Claire Desbois, François Danion, Brigitte Ranque, Amélie Cransac, Marine Nadal, Coralie Gernez, Yacine Boudali, Claire Madelaine, Georgina Maalouf, Jonathan Marey, Sophie Bayer, Antoine Fayol, Souad Benarab, Luc Haudebourg, Sophie Bulifon, Claire Pacheco, Philippe Durand, Olivier Hermine, Fanny Alby-Laurent, Geoffroy Liégeon, Axelle Fuentes, Jean-Daniel Lelievre, Gilles Garcia, Céline Verstuyft Verstuyft, Marie-Aude Penet, Constance Delaugerre, Nicolas Carlier, Aurélie Durel Maurisse, Gilles Pialoux, Zeina Louis, Marion Parisey, Pascal Lim, Gaelle Clavere, Martin De Sarcus, Marie Vayssettes, Thomas Papo, Adrien Joseph, Hilario Nunes, Hanane Fodil, Solen Kernéis, Antoine Bachelard, Jacques Duranteau, Karine Lacombe, Olivia Lenoir, Mathilde Vallet, Isabelle Brindele, Robin Charreteur, Elie Azoulay, Dorothée Chopin, Aïcha Bah, Moustafa Benafla, Marie Gilbert, Matthieu Lemoine, Abolfazl Mohebbi, Mathilde Noaillon, Amina Kebir, Virginie Zarrouk, Cécile Yelnik, Benjamin Terrier, Solène Fabre, Paul Crespin, Sarah Dalibey, Thierno Dieye, Renaud Felten, Oriane Puéchal, Pernelle Vauboin, Caroline Hauw-Berlemont, Gabriel Baron, Paul Vermes, Yvon Ruch, Dominique Dautel, Tassadit Hadjam, Anne-Marie Roques, Jean-Philippe Bastard, Younes El Amine, Damien Sène, Alaki Thiemele, Catherine Boussard, Vincent Fallet, Timothee Bironne, Damien Vanhoye, Guillaume Geri, Amine Ghembaza, Bertrand Dunogue, Nadia Anguel, Laure Berton, Caroline Semaille, Thomas Volpe, Jacques Cadranel, Thomas Gorget, Julien Saussereau, Elodie Issorat, Sami Kolta, Pathologies Pulmonaires et Plasticité Cellulaire - UMR-S 1250 (P3CELL), Université de Reims Champagne-Ardenne (URCA)-Institut National de la Santé et de la Recherche Médicale (INSERM), Centre de Recherche Épidémiologie et Statistique Sorbonne Paris Cité (CRESS (U1153 / UMR_A_1125 / UMR_S_1153)), Conservatoire National des Arts et Métiers [CNAM] (CNAM), HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-Université Sorbonne Paris Cité (USPC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris Cité (UPCité)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Université Paris Cité (UPCité), Optimisation thérapeutique en Neuropsychopharmacologie (OPTeN (UMR_S_1144 / U1144)), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris Cité (UPCité), Service de Réanimation Médicale et Toxicologique [Hôpital Lariboisière], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpital Lariboisière-Fernand-Widal [APHP], Centre de recherche en Myologie – U974 SU-INSERM, Institut National de la Santé et de la Recherche Médicale (INSERM)-Sorbonne Université (SU), and Porcher, Raphaël

Subjects
Male, medicine.medical_treatment, [SDV]Life Sciences [q-bio], [SDV.MHEP.PSR]Life Sciences [q-bio]/Human health and pathology/Pulmonology and respiratory tract, law.invention, 0302 clinical medicine, Randomized controlled trial, [SDV.MHEP.MI]Life Sciences [q-bio]/Human health and pathology/Infectious diseases, law, 030212 general & internal medicine, ComputingMilieux_MISCELLANEOUS, [SDV.MHEP.ME] Life Sciences [q-bio]/Human health and pathology/Emerging diseases, [SDV.MHEP.ME]Life Sciences [q-bio]/Human health and pathology/Emerging diseases, education.field_of_study, Hazard ratio, Articles, Middle Aged, Intensive care unit, Hospitals, [SDV.MHEP.CSC] Life Sciences [q-bio]/Human health and pathology/Cardiology and cardiovascular system, 3. Good health, Hospitalization, [SDV.TOX] Life Sciences [q-bio]/Toxicology, Treatment Outcome, [SDV.TOX]Life Sciences [q-bio]/Toxicology, [SDV.MHEP.MI] Life Sciences [q-bio]/Human health and pathology/Infectious diseases, Female, France, medicine.drug, Adult, Pulmonary and Respiratory Medicine, medicine.medical_specialty, Critical Care, Population, 03 medical and health sciences, [SDV.MHEP.CSC]Life Sciences [q-bio]/Human health and pathology/Cardiology and cardiovascular system, Internal medicine, medicine, Humans, education, Critical Care Outcomes, Aged, Mechanical ventilation, Anakinra, SARS-CoV-2, business.industry, Comment, COVID-19, Bayes Theorem, Pneumonia, medicine.disease, Respiration, Artificial, COVID-19 Drug Treatment, Clinical trial, Interleukin 1 Receptor Antagonist Protein, 030228 respiratory system, [SDV.MHEP.PSR] Life Sciences [q-bio]/Human health and pathology/Pulmonology and respiratory tract, business, Interleukin-1
Abstract

International audience; Background: Patients with COVID-19 pneumonia have an excess of inflammation and increased concentrations of cytokines including interleukin-1 (IL-1). We aimed to determine whether anakinra, a recombinant human IL-1 receptor antagonist, could improve outcomes in patients in hospital with mild-to-moderate COVID-19 pneumonia.Methods: In this multicentre, open-label, Bayesian randomised clinical trial (CORIMUNO-ANA-1), nested within the CORIMUNO-19 cohort, we recruited patients from 16 University hospitals in France with mild-to-moderate COVID-19 pneumonia, severe acute respiratory syndrome coronavirus 2 infection confirmed by real-time RT-PCR, requiring at least 3 L/min of oxygen by mask or nasal cannula but without ventilation assistance, a score of 5 on the WHO Clinical Progression Scale (WHO-CPS), and a C-reactive protein serum concentration of more than 25 mg/L not requiring admission to the intensive care unit at admission to hospital. Eligible patients were randomly assigned (1:1) using a web-based secure centralised system, stratified by centre and blocked with varying block sizes (randomly of size two or four), to either usual care plus anakinra (200 mg twice a day on days 1-3, 100 mg twice on day 4, 100 mg once on day 5) or usual care alone. Usual care was provided at the discretion of the site clinicians. The two coprimary outcomes were the proportion of patients who had died or needed non-invasive or mechanical ventilation by day 4 (ie, a score of >5 on the WHO-CPS) and survival without need for mechanical or non-invasive ventilation (including high-flow oxygen) at day 14. All analyses were done on an intention-to-treat basis. The trial is registered with ClinicalTrials.gov, NCT04341584, and is now closed to accrual.Findings: Between April 8 and April 26, 2020, we screened 153 patients. The study was stopped early following the recommendation of the data and safety monitoring board, after the recruitment of 116 patients: 59 were assigned to the anakinra group, and 57 were assigned to the usual care group. Two patients in the usual care group withdrew consent and were not analysed. In the analysable population, the median age was 66 years (IQR 59 to 76) and 80 (70%) participants were men. In the anakinra group, 21 (36%) of 59 patients had a WHO-CPS score of more than 5 at day 4 versus 21 (38%) of 55 in the usual care group (median posterior absolute risk difference [ARD] -2·5%, 90% credible interval [CrI] -17·1 to 12·0), with a posterior probability of ARD of less than 0 (ie, anakinra better than usual care) of 61·2%. At day 14, 28 (47%; 95% CI 33 to 59) patients in the anakinra group and 28 (51%; 95% CI 36 to 62) in the usual care group needed ventilation or died, with a posterior probability of any efficacy of anakinra (hazard ratio [HR] being less than 1) of 54·5% (median posterior HR 0·97; 90% CrI 0·62 to 1·52). At day 90, 16 (27%) patients in the anakinra group and 15 (27%) in the usual care group had died. Serious adverse events occurred in 27 (46%) patients in the anakinra group and 21 (38%) in the usual care group (p=0·45).Interpretation: Anakinra did not improve outcomes in patients with mild-to-moderate COVID-19 pneumonia. Further studies are needed to assess the efficacy of anakinra in other selected groups of patients with more severe COVID-19.Funding: The Ministry of Health, Programme Hospitalier de Recherche Clinique, Foundation for Medical Research, and AP-HP Foundation.

Published
2021
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3. HypervirulentKlebsiella pneumoniaein Cryptogenic Liver Abscesses, Paris, France

Author

Victoire de Lastours, Maria Ludovica Gasperini, O. Roux, Marie-Hélène Nicolas-Chanoine, Alice Gioanni, Véronique Leflon-Guibout, Benjamin Rossi, Safi Dokmak, Agnès Lefort, Geoffrey Rossi, Bruno Fantin, and Maxime Ronot

Subjects
0301 basic medicine, Microbiology (medical), Serotype, Paris, Epidemiology, Klebsiella pneumoniae, Liver Abscess, 030106 microbiology, lcsh:Medicine, Virulence, lcsh:Infectious and parasitic diseases, Microbiology, Cohort Studies, 03 medical and health sciences, CME, Humans, Medicine, lcsh:RC109-216, Hypervirulent Klebsiella pneumoniae in Cryptogenic Liver Abscesses, Paris, France, bacteria, Pathogen, Retrospective Studies, biology, business.industry, lcsh:R, Cancer, Retrospective cohort study, cryptogenic liver abscesses, bacterial infections and mycoses, biology.organism_classification, medicine.disease, Hospitals, hypervirulent, Klebsiella Infections, respiratory tract diseases, 3. Good health, 030104 developmental biology, Infectious Diseases, France, Synopsis, business, Liver abscess, Cohort study
Abstract

Europe might have an epidemic of infections with these bacteria similar to that in Asia in the early 2000s., Liver abscesses containing hypervirulent Klebsiella pneumoniae have emerged during the past 2 decades, originally in Southeast Asia and then worldwide. We hypothesized that hypervirulent K. pneumoniae might also be emerging in France. In a retrospective, monocentric, cohort study, we analyzed characteristics and outcomes for 199 consecutive patients in Paris, France, with liver abscesses during 2010−2015. We focused on 31 patients with abscesses containing K. pneumoniae. This bacterium was present in most (14/27, 52%) cryptogenic liver abscesses. Cryptogenic K. pneumoniae abscesses were more frequently community-acquired (p

Published
2018
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4. Iron Supplementation-Induced Phosphaturic Osteomalacia: FGF23 is the Culprit

Author

Franck Carbonnel, Rakiba Belkhir, Tomas Urbina, Michael A. Collins, Xavier Mariette, Raphaèle Seror, Stephan Pavy, and Geoffrey Rossi

Subjects
0301 basic medicine, medicine.medical_specialty, Fractures, Stress, Hypophosphatemia, Iron, Endocrinology, Diabetes and Metabolism, Pain, 030204 cardiovascular system & hematology, Culprit, Gastroenterology, 03 medical and health sciences, 0302 clinical medicine, Internal medicine, medicine, Humans, Orthopedics and Sports Medicine, Gait, Osteomalacia, business.industry, Inflammatory Bowel Diseases, medicine.disease, Fibroblast Growth Factors, Fibroblast Growth Factor-23, 030104 developmental biology, Dietary Supplements, Iron supplementation, business
Published
2018
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5. A reservoir of rituximab-resistant splenic memory B cells contributes to relapses after B-cell depletion therapy

Author

Bertrand Godeau, Tatiana Fadeev, Etienne Crickx, Lionel Galicier, Marc Michel, Matthieu Mahevas, Imane Azzaoui, Pascal Chappert, Aurélien Sokal, Claude-Agnès Reynaud, Véronique Meignin, Guillaume Bonnard, Geoffrey Rossi, Sébastien Storck, Jean-Claude Weill, Etienne Rivière, Alexis Vandenberghe, and Sandra K. Weller

Subjects
Autoimmune disease, 0303 health sciences, biology, business.industry, Germinal center, Spleen, medicine.disease, 3. Good health, 03 medical and health sciences, 0302 clinical medicine, medicine.anatomical_structure, Antigen, hemic and lymphatic diseases, Immunology, biology.protein, Medicine, Rituximab, Lymphopoiesis, Antibody, business, B cell, 030304 developmental biology, 030215 immunology, medicine.drug
Abstract

Immune thrombocytopenia (ITP) is an autoimmune disease mediated by pathogenic antibodies directed against platelet antigens, including GPIIbIIIa. Taking advantage of spleen samples obtained from ITP patients, we characterized by multiples approaches the onset of disease relapses occurring after an initial complete response to rituximab. Analysis of splenic B cell immunoglobulin heavy chain gene repertoire at bulk level and from single anti-GPIIbIIIa B cells revealed that germinal centers were fueled by B cells originating from the ongoing lymphopoiesis, but also by rituximab-resistant memory B cells, both giving rise to anti-GPIIbIIIa plasma cells. We identified a population of splenic memory B cells that resisted rituximab through acquisition of a unique phenotype and contributed to relapses, providing a new target in B cell mediated autoimmune diseases.

Published
2019
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6. Rituximab-resistant splenic memory B cells and newly engaged naive B cells fuel relapses in patients with immune thrombocytopenia

Author

Pascal Chappert, Sylvain Audia, Geoffrey Rossi, Jehane Fadlallah, Véronique Meignin, Marc Michel, Matthieu Mahévas, Etienne Rivière, Sébastien Storck, Sandra K. Weller, Etienne Crickx, Imane Azzaoui, Tatiana Fadeev, Claude-Agnès Reynaud, Alexis Vandenberghe, Jean-Claude Weill, Bertrand Godeau, Guillaume Bonnard, Aurélien Sokal, Institut Necker Enfants-Malades (INEM - UM 111 (UMR 8253 / U1151)), Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Service de médecine interne [Mondor], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpital Henri Mondor-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12), Institut Mondor de Recherche Biomédicale (IMRB), Institut National de la Santé et de la Recherche Médicale (INSERM)-IFR10-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12), Université Paris Cité - UFR Médecine [Santé] (UPCité UFR Médecine), Université Paris Cité (UPCité), Hopital Saint-Louis [AP-HP] (AP-HP), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Hôpital Haut-Lévêque [CHU Bordeaux], CHU Bordeaux [Bordeaux], Hôpital du Bocage, Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Université de Paris - UFR Médecine [Santé] (UP Médecine), and Université de Paris (UP)

Subjects
0301 basic medicine, Immunoglobulin gene, [SDV]Life Sciences [q-bio], Naive B cell, Plasma cell, CD19, Article, 03 medical and health sciences, Antibodies, Monoclonal, Murine-Derived, 0302 clinical medicine, Recurrence, medicine, Humans, B cell, CD20, B-Lymphocytes, Purpura, Thrombocytopenic, Idiopathic, biology, business.industry, Germinal center, General Medicine, 3. Good health, 030104 developmental biology, medicine.anatomical_structure, 030220 oncology & carcinogenesis, Immunology, biology.protein, Rituximab, business, medicine.drug
Abstract

International audience; Rituximab (RTX), an antibody targeting CD20, is widely used as a first-line therapeutic strategy in B cell–mediated autoimmune diseases. However, a large proportion of patients either do not respond to the treatment or relapse during B cell reconstitution. Here, we characterize the cellular basis responsible for disease relapse in secondary lymphoid organs in humans, taking advantage of the opportunity offered by therapeutic splenectomy in patients with relapsing immune thrombocytopenia. By analyzing the B and plasma cell immunoglobulin gene repertoire at bulk and antigen-specific single-cell level, we demonstrate that relapses are associated with two responses coexisting in germinal centers and involving preexisting mutated memory B cells that survived RTX treatment and naive B cells generated upon reconstitution of the B cell compartment. To identify distinctive characteristics of the memory B cells that escaped RTX-mediated depletion, we analyzed RTX refractory patients who did not respond to treatment at the time of B cell depletion. We identified, by single-cell RNA sequencing (scRNA-seq) analysis, a population of quiescent splenic memory B cells that present a unique, yet reversible, RTX-shaped phenotype characterized by down-modulation of B cell–specific factors and expression of prosurvival genes. Our results clearly demonstrate that these RTX-resistant autoreactive memory B cells reactivate as RTX is cleared and give rise to plasma cells and further germinal center reactions. Their continued surface expression of CD19 makes them efficient targets for current anti-CD19 therapies. This study thus identifies a pathogenic contributor to autoimmune diseases that can be targeted by available therapeutic agents.

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