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Lévesque H, Viallard JF, Houivet E, Bonnotte B, Voisin S, Le Cam-Duchez V, Maillot F, Lambert M, Liozon E, Hervier B, Fain O, Guillet B, Schmidt J, Luca LE, Ebbo M, Ferreira-Maldent N, Babuty A, Sailler L, Duffau P, Barbay V, Audia S, Benichou J, Graveleau J, Benhamou Y. Cyclophosphamide vs rituximab for eradicating inhibitors in acquired hemophilia A: A randomized trial in 108 patients. Thromb Res 2024; 237:79-87. [PMID: 38555718 DOI: 10.1016/j.thromres.2024.03.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 02/19/2024] [Accepted: 03/07/2024] [Indexed: 04/02/2024]
Abstract
BACKGROUND Acquired hemophilia A (AHA) is a rare autoimmune disorder due to autoantibodies against Factor VIII, with a high mortality risk. Treatments aim to control bleeding and eradicate antibodies by immunosuppression. International recommendations rely on registers and international expert panels. METHODS CREHA, an open-label randomized trial, compared the efficacy and safety of cyclophosphamide and rituximab in association with steroids in patients with newly diagnosed AHA. Participants were treated with 1 mg/kg prednisone daily and randomly assigned to receive either 1.5-2 mg/kg/day cyclophosphamide orally for 6 weeks, or 375 mg/m2 rituximab once weekly for 4 weeks. The primary endpoint was complete remission over 18 months. Secondary endpoints included time to achieve complete remission, relapse occurrence, mortality, infections and bleeding, and severe adverse events. RESULTS Recruitment was interrupted because of new treatment recommendations after 108 patients included (58 cyclophosphamide, 50 rituximab). After 18 months, 39 cyclophosphamide patients (67.2 %) and 31 rituximab patients (62.0 %) were in complete remission (OR 1.26; 95 % CI, 0.57 to 2.78). In the poor prognosis group (FVIII < 1 IU/dL, inhibitor titer > 20 BU mL-1), significantly more remissions were observed with cyclophosphamide (22 patients, 78.6 %) than with rituximab (12 patients, 48.0 %; p = 0.02). Relapse rates, deaths, severe infections, and bleeding were similar in the 2 groups. In patients with severe infection, cumulative doses of steroids were significantly higher than in patients without infection (p = 0.03). CONCLUSION Cyclophosphamide and rituximab showed similar efficacy and safety. As first line, cyclophosphamide seems preferable, especially in poor prognosis patients, as administered orally and less expensive. FUNDING French Ministry of Health. CLINICALTRIALS gov number: NCT01808911.
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Affiliation(s)
- H Lévesque
- Normandie Univ, UNIROUEN, U 1096, CHU Rouen, Department of Internal Medicine, F-76000 Rouen, France.
| | - J F Viallard
- Service de Médecine Interne et Maladies Infectieuses Hôpital Haut-Lévêque, CHU Bordeaux, 5 avenue de Magellan, 33604 Pessac, France
| | - E Houivet
- Department of Biostatistics, CHU Rouen, F-76031 Rouen, France
| | - B Bonnotte
- Service de médecine interne et immunologie clinique, CHU Dijon-Bourgogne, Université de Dijon, F-21079 Dijon, France
| | - S Voisin
- Department of Internal Medicine, CHU Toulouse, F-31059 Toulouse. France
| | - V Le Cam-Duchez
- Normandie Univ, UNIROUEN, Hématologie biologique, F-76031 Rouen, France
| | - F Maillot
- Département de Médecine Interne et immunologie clinique, CHRU Tours, Université de Tours, F-37044 Tours, France
| | - M Lambert
- CHU Lille, Département de Médecine Interne et d'Immunologie Clinique, Centre National de Référence Maladies Systémiques et Auto-immunes Rares Nord et Nord-Ouest de France (CeRAINO), European Reerence Network on Rare Connective Tissue and Musculoskeletal Diseases Network (ReCONNECT), F-59000 Lille, France
| | - E Liozon
- Department of Internal Medicine, Dupuytren Hospital, F-87000 Limoges, France
| | - B Hervier
- Service de Médecine Interne, Hôpital Saint-Louis, APHP, 75010 Paris & INSERM UMR-S 976, Human Immunology, Pathophysiology, Immunotherapy, Saint-Louis Research Institute, F-75000 Paris, France
| | - O Fain
- Sorbonne Université, APHP, Service de Médecine Interne-DMU i3, Hôpital Saint-Antoine, Paris F-75000, France
| | - B Guillet
- Univ Rennes, CHU Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail) - UMR-S 1085, F-35000 Rennes, France
| | - J Schmidt
- Department of Internal Medicine, Amiens University Hospital, F-80000 Amiens, France
| | - L E Luca
- Department of Internal Medicine, Poitiers University Hospital, F-86000 Poitiers, France
| | - M Ebbo
- Service de Médecine Interne, Hôpital La Timone, CHU Marseille, Aix-Marseille Université, F-13000 Marseille, France
| | - N Ferreira-Maldent
- Département de Médecine Interne et immunologie clinique, CHRU Tours, Université de Tours, F-37044 Tours, France
| | - A Babuty
- Service d'Hématologie Biologique, CRC-MHC, CHU de Nantes, Nantes Cedex 1, France
| | - L Sailler
- Department of Internal Medicine, CHU Toulouse, F-31059 Toulouse. France
| | - P Duffau
- Service de Médecine Interne-Immunologie Clinique Hôpital Saint-André, CHU Bordeaux, 1 rue Jean Burguet, 33075 Bordeaux, France
| | - V Barbay
- Normandie Univ, UNIROUEN, Hématologie biologique, F-76031 Rouen, France
| | - S Audia
- Service de médecine interne et immunologie clinique, CHU Dijon-Bourgogne, Université de Dijon, F-21079 Dijon, France
| | - J Benichou
- Department of Biostatistics, CHU Rouen and CESP UMR 1018, University of Rouen and University Paris-Saclay, F-76031 Rouen, France
| | - J Graveleau
- Nantes Université, CHU Nantes, Service de Médecine Interne, Nantes, France
| | - Y Benhamou
- Normandie Univ, UNIROUEN, U 1096, CHU Rouen, Department of Internal Medicine, F-76000 Rouen, France
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Bousseksou A, Babuty A, Tetienne JP, Moldovan-Doyen I, Braive R, Beaudoin G, Sagnes I, De Wilde Y, Colombelli R. Sub-wavelength energy concentration with electrically generated mid-infrared surface plasmons. Opt Express 2012; 20:13738-13747. [PMID: 22714439 DOI: 10.1364/oe.20.013738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
While freely propagating photons cannot be focused below their diffraction limit, surface-plasmon polaritons follow the metallic surface to which they are bound, and can lead to extremely sub-wavelength energy volumes. These properties are lost at long mid-infrared and THz wavelengths where metals behave as quasi-perfect conductors, but can in principle be recovered by artificially tailoring the surface-plasmon dispersion. We demonstrate - in the important mid-infrared range of the electromagnetic spectrum - the generation onto a semiconductor chip of plasmonic excitations which can travel along long distances, on bent paths, to be finally focused into a sub-wavelength volume. The demonstration of these advanced functionalities is supported by full near-field characterizations of the electromagnetic field distribution on the surface of the active plasmonic device.
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Affiliation(s)
- A Bousseksou
- Institut d’Electronique Fondamentale, Univ. Paris Sud, UMR8622 CNRS, 91405 Orsay, France.
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Babuty A, Bousseksou A, Tetienne JP, Doyen IM, Sirtori C, Beaudoin G, Sagnes I, De Wilde Y, Colombelli R. Semiconductor surface plasmon sources. Phys Rev Lett 2010; 104:226806. [PMID: 20867196 DOI: 10.1103/physrevlett.104.226806] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2010] [Revised: 05/10/2010] [Indexed: 05/29/2023]
Abstract
Surface-plasmon polaritons (SPPs) are propagating electromagnetic modes bound at a metal-dielectric interface. We report on electrical generation of SPPs by reproducing the analogue in the near field of the slit-doublet experiment, in a device which includes all the building blocks required for a fully integrated plasmonic active source: an electrical generator of SPPs, a coupler, and a passive metallic waveguide. SPPs are generated upon injection of electrical current, and they are then launched at the edges of a passive metallic strip. The interference fringes arising from the plasmonic standing wave on the surface of the metallic strip are unambiguously detected with apertureless near-field scanning optical microscopy.
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Affiliation(s)
- A Babuty
- Institut Langevin, ESPCI ParisTech, CNRS UMR 7587, LOP, 75005 Paris, France
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Bousseksou A, Colombelli R, Babuty A, De Wilde Y, Chassagneux Y, Sirtori C, Patriarche G, Beaudoin G, Sagnes I. A semiconductor laser device for the generation of surface-plasmons upon electrical injection. Opt Express 2009; 17:9391-9400. [PMID: 19466191 DOI: 10.1364/oe.17.009391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Surface plasmons are electromagnetic waves originating from electrons and light oscillations at metallic surfaces. Since freely propagating light cannot be coupled directly into surface-plasmon modes, a compact, semiconductor electrical device capable of generating SPs on the device top metallic surface would represent an advantage: not only SP manipulation would become easier, but Au-metalized surfaces can be easily functionalized for applications. Here, we report a demonstration of such a device. The direct proof of surface-plasmon generation is obtained with apertureless near-field scanning optical microscopy, which detects the presence of an intense, evanescent electric field above the device metallic surface upon electrical injection.
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Affiliation(s)
- A Bousseksou
- Institut d'Electronique Fondamentale, Université Paris-Sud and CNRS, UMR8622, 91405 Orsay, France
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