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Infantino M, Foddai S, Manfredi M, Benucci M, Radin M, Cecchi I, Barinotti A, Aluf O, Rubini E, Elnaz R, Menegatti E, Roccatello D, Sciascia S. Pursuing appropriateness in antiphospholipid antibodies testing: Feasibility study with a reflex test approach for anti-β2GPI I domain. Autoimmun Rev 2023; 22:103454. [PMID: 37741530 DOI: 10.1016/j.autrev.2023.103454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Accepted: 09/20/2023] [Indexed: 09/25/2023]
Affiliation(s)
- Maria Infantino
- Laboratory of Immunology and Allergology, S. Giovanni di Dio Hospital, Florence, Italy.
| | - Silvia Foddai
- University Center of Excellence on Nephrologic, Rheumatologic and Rare Diseases (ERK-Net, ERN-Reconnect and RITA-ERN Member) with Nephrology and Dialysis Unit and Center of Immuno-Rheumatology and Rare Diseases (CMID), Coordinating Center of the Interregional Network for Rare Diseases of Piedmont and Aosta Valley, San Giovanni Bosco Hub Hospital, Department of Clinical and Biological Sciences, University of Turin, Turin, Italy
| | - Mariangela Manfredi
- Laboratory of Immunology and Allergology, S. Giovanni di Dio Hospital, Florence, Italy
| | | | - Massimo Radin
- University Center of Excellence on Nephrologic, Rheumatologic and Rare Diseases (ERK-Net, ERN-Reconnect and RITA-ERN Member) with Nephrology and Dialysis Unit and Center of Immuno-Rheumatology and Rare Diseases (CMID), Coordinating Center of the Interregional Network for Rare Diseases of Piedmont and Aosta Valley, San Giovanni Bosco Hub Hospital, Department of Clinical and Biological Sciences, University of Turin, Turin, Italy
| | - Irene Cecchi
- University Center of Excellence on Nephrologic, Rheumatologic and Rare Diseases (ERK-Net, ERN-Reconnect and RITA-ERN Member) with Nephrology and Dialysis Unit and Center of Immuno-Rheumatology and Rare Diseases (CMID), Coordinating Center of the Interregional Network for Rare Diseases of Piedmont and Aosta Valley, San Giovanni Bosco Hub Hospital, Department of Clinical and Biological Sciences, University of Turin, Turin, Italy
| | - Alice Barinotti
- University Center of Excellence on Nephrologic, Rheumatologic and Rare Diseases (ERK-Net, ERN-Reconnect and RITA-ERN Member) with Nephrology and Dialysis Unit and Center of Immuno-Rheumatology and Rare Diseases (CMID), Coordinating Center of the Interregional Network for Rare Diseases of Piedmont and Aosta Valley, San Giovanni Bosco Hub Hospital, Department of Clinical and Biological Sciences, University of Turin, Turin, Italy
| | - Ofir Aluf
- University Center of Excellence on Nephrologic, Rheumatologic and Rare Diseases (ERK-Net, ERN-Reconnect and RITA-ERN Member) with Nephrology and Dialysis Unit and Center of Immuno-Rheumatology and Rare Diseases (CMID), Coordinating Center of the Interregional Network for Rare Diseases of Piedmont and Aosta Valley, San Giovanni Bosco Hub Hospital, Department of Clinical and Biological Sciences, University of Turin, Turin, Italy
| | - Elena Rubini
- University Center of Excellence on Nephrologic, Rheumatologic and Rare Diseases (ERK-Net, ERN-Reconnect and RITA-ERN Member) with Nephrology and Dialysis Unit and Center of Immuno-Rheumatology and Rare Diseases (CMID), Coordinating Center of the Interregional Network for Rare Diseases of Piedmont and Aosta Valley, San Giovanni Bosco Hub Hospital, Department of Clinical and Biological Sciences, University of Turin, Turin, Italy
| | - Rahbari Elnaz
- University Center of Excellence on Nephrologic, Rheumatologic and Rare Diseases (ERK-Net, ERN-Reconnect and RITA-ERN Member) with Nephrology and Dialysis Unit and Center of Immuno-Rheumatology and Rare Diseases (CMID), Coordinating Center of the Interregional Network for Rare Diseases of Piedmont and Aosta Valley, San Giovanni Bosco Hub Hospital, Department of Clinical and Biological Sciences, University of Turin, Turin, Italy
| | - Elisa Menegatti
- University Center of Excellence on Nephrologic, Rheumatologic and Rare Diseases (ERK-Net, ERN-Reconnect and RITA-ERN Member) with Nephrology and Dialysis Unit and Center of Immuno-Rheumatology and Rare Diseases (CMID), Coordinating Center of the Interregional Network for Rare Diseases of Piedmont and Aosta Valley, San Giovanni Bosco Hub Hospital, Department of Clinical and Biological Sciences, University of Turin, Turin, Italy
| | - Dario Roccatello
- University Center of Excellence on Nephrologic, Rheumatologic and Rare Diseases (ERK-Net, ERN-Reconnect and RITA-ERN Member) with Nephrology and Dialysis Unit and Center of Immuno-Rheumatology and Rare Diseases (CMID), Coordinating Center of the Interregional Network for Rare Diseases of Piedmont and Aosta Valley, San Giovanni Bosco Hub Hospital, Department of Clinical and Biological Sciences, University of Turin, Turin, Italy
| | - Savino Sciascia
- University Center of Excellence on Nephrologic, Rheumatologic and Rare Diseases (ERK-Net, ERN-Reconnect and RITA-ERN Member) with Nephrology and Dialysis Unit and Center of Immuno-Rheumatology and Rare Diseases (CMID), Coordinating Center of the Interregional Network for Rare Diseases of Piedmont and Aosta Valley, San Giovanni Bosco Hub Hospital, Department of Clinical and Biological Sciences, University of Turin, Turin, Italy
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Zhou Y, Hu C, Qi W, Long Y, Huang C, Wang Q, Tian X, Zhao J, Li M, Zeng X. Anti-β2GPI-domain I antibody is associated with extra-criteria manifestations in a large prospective antiphospholipid syndrome cohort in China. Lupus Sci Med 2023; 10:e000924. [PMID: 37607781 PMCID: PMC10445380 DOI: 10.1136/lupus-2023-000924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 08/05/2023] [Indexed: 08/24/2023]
Abstract
BACKGROUND Anti-β2GPI-domain I (β2GPI-DI) antibody is pathogenic in patients with antiphospholipid syndrome (APS), but its additional clinical associations and diagnostic value are controversial. METHODS A total of 378 patients were included, of which 119 patients diagnosed with primary APS, 50 with APS secondary to SLE (SAPS group), 209 with SLE without APS (SLE group). Serum anti-β2GPI-DI IgG was measured using chemiluminescent immunoassay. Extra-criteria manifestations were analysed, including thrombocytopenia, autoimmune haemolytic anaemia, valvular lesions, APS nephropathy and non-vascular neurological manifestations. RESULTS In 169 patients with APS, 55 (32.5%) were positive for anti-β2GPI-DI IgG, accounting for 77.5% of those with anti-β2GPI IgG positivity. It is shown that 96.4% of those with anti-β2GPI-DI IgG also showed triple positivity in classic antiphospholipid antibodies (aPLs). The positivity of anti-β2GPI-DI IgG was significantly associated with recurrent thrombosis before APS diagnosis (p=0.015), microvascular thrombosis (p=0.038), but not with pregnancy morbidity (PM). Notably, patients with extra-criteria manifestations showed significantly higher positivity (p=0.001) and titres (p<0.001) in anti-β2GPI-DI IgG, especially for thrombocytopenia and APS nephropathy. In multivariable analysis, anti-β2GPI-DI IgG positivity (OR 2.94, 95% CI 1.29 to 6.70), secondary APS, arterial hypertension and Coombs' test positivity independently predicted extra-criteria manifestations (C-index 0.83, 95% CI 0.77 to 0.90). After a median follow-up of 25 months, patients with anti-β2GPI-DI IgG also showed a tendency of more extra-criteria events, but not thrombotic events. Anti-β2GPI-DI was positive among 8.1% of the SLE controls, and showed high specificity (91.9%) in diagnosing SAPS among patients with SLE as compared with classic aPLs. CONCLUSION Anti-β2GPI-DI IgG was associated with extra-criteria manifestations in patients with APS. Further studies are warranted to validate its predictive values and potential role in daily practice.
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Affiliation(s)
- Yangzhong Zhou
- Department of Rheumatology and Clinical Immunology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
- State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Beijing, China
- National Clinical Research Center for Dermatologic and Immunologic Diseases (NCRC-DID), Ministry of Science & Technology, Beijing, China
| | - Chaojun Hu
- Department of Rheumatology and Clinical Immunology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
- State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Beijing, China
- National Clinical Research Center for Dermatologic and Immunologic Diseases (NCRC-DID), Ministry of Science & Technology, Beijing, China
| | - Wanting Qi
- Department of Rheumatology and Clinical Immunology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
- State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Beijing, China
- National Clinical Research Center for Dermatologic and Immunologic Diseases (NCRC-DID), Ministry of Science & Technology, Beijing, China
| | - Yin Long
- Department of Rheumatology and Clinical Immunology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
- State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Beijing, China
- National Clinical Research Center for Dermatologic and Immunologic Diseases (NCRC-DID), Ministry of Science & Technology, Beijing, China
| | - Can Huang
- Department of Rheumatology and Clinical Immunology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
- State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Beijing, China
- National Clinical Research Center for Dermatologic and Immunologic Diseases (NCRC-DID), Ministry of Science & Technology, Beijing, China
| | - Qian Wang
- Department of Rheumatology and Clinical Immunology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
- State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Beijing, China
- National Clinical Research Center for Dermatologic and Immunologic Diseases (NCRC-DID), Ministry of Science & Technology, Beijing, China
- Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Xinping Tian
- Department of Rheumatology and Clinical Immunology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
- State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Beijing, China
- National Clinical Research Center for Dermatologic and Immunologic Diseases (NCRC-DID), Ministry of Science & Technology, Beijing, China
- Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Jiuliang Zhao
- Department of Rheumatology and Clinical Immunology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
- State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Beijing, China
- National Clinical Research Center for Dermatologic and Immunologic Diseases (NCRC-DID), Ministry of Science & Technology, Beijing, China
- Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Mengtao Li
- Department of Rheumatology and Clinical Immunology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
- State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Beijing, China
- National Clinical Research Center for Dermatologic and Immunologic Diseases (NCRC-DID), Ministry of Science & Technology, Beijing, China
- Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Xiaofeng Zeng
- Department of Rheumatology and Clinical Immunology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
- State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Beijing, China
- National Clinical Research Center for Dermatologic and Immunologic Diseases (NCRC-DID), Ministry of Science & Technology, Beijing, China
- Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
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de Jesús GR, Benson AE, Chighizola CB, Sciascia S, Branch DW. 16th International Congress on Antiphospholipid Antibodies Task Force Report on Obstetric Antiphospholipid Syndrome. Lupus 2020; 29:1601-1615. [PMID: 32883160 DOI: 10.1177/0961203320954520] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Obstetric antiphospholipid syndrome (APS) remains a clinical challenge for practitioners, with several controversial points that have not been answered so far. This Obstetric APS Task Force met on the 16th International Congress on Antiphospholipid Antibodies in Manchester, England, to discuss about treatment, diagnostic and clinical aspects of the disease. This report will address evidence-based medicine related to obstetric APS, including limitations on our current management, the relationship between antibodies against domain 1 of β2GPI and obstetric morbidity, hydroxychloroquine use in patients with obstetric APS and factors associated with thrombosis after obstetric APS. Finally, future directions for better understanding this complex condition are also reported by the Task Force coordinators.
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Affiliation(s)
- Guilherme R de Jesús
- Department of Obstetrics, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Ashley E Benson
- Obstetrics and Gynecology, University of Utah Health, Salt Lake City, UT, USA
| | - Cecilia B Chighizola
- Experimental Laboratory of Immunorheumatological Researches, Allergology, Clinical Immunology & Rheumatology Unit, Istituto Auxologico Italiano IRCCS, Milan, Italy
| | - Savino Sciascia
- Center of Research of Immunopathology and Rare Diseases, Department of Clinical and Biological Sciences, University of Turin, Turin, Italy
| | - David W Branch
- Obstetrics and Gynecology, University of Utah Health, Salt Lake City, UT, USA
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Beltagy A, Trespidi L, Gerosa M, Ossola MW, Meroni PL, Chighizola CB. Anti-phospholipid antibodies and reproductive failures. Am J Reprod Immunol 2020; 85:e13258. [PMID: 32347616 DOI: 10.1111/aji.13258] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 04/21/2020] [Accepted: 04/22/2020] [Indexed: 12/16/2022] Open
Abstract
Anti-phospholipid syndrome (APS) recapitulates the link between autoimmunity and pregnancy failure: Acquired anti-phospholipid antibodies (aPL) play a pathogenic role in pregnancy complications. The diagnosis of obstetric APS can easily be pursued when women present with laboratory and clinical features fulfilling the international classification criteria. Standard therapeutic approach to obstetric APS consists in the association of anti-platelet agents and anticoagulants. Most patients achieve a live birth thanks to conventional treatment; however, approximately 20% fail to respond and are managed with additional therapeutic tools added on the top of conventional treatment. Surely, a refinement of risk stratification tools would allow early identification of high-risk pregnancies that warrant tailored treatment. In real life, obstetricians and rheumatologists face complex diagnostic scenarios including women with pregnancy morbidities other than those mentioned in classification criteria such as one or two early losses and premature birth after 34 weeks due to preeclampsia or placental insufficiency, women with low-titer aPL not fulfilling criteria laboratory requirements, women with positive non-criteria aPL, asymptomatic aPL carriers, and infertile women found to be aPL-positive. This review focuses on some of the several unanswered questions related to diagnostic, prognostic, and therapeutic aspects in obstetric APS.
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Affiliation(s)
- Asmaa Beltagy
- Experimental Laboratory of Immunological and Rheumatologic Researches, Istituto Auxologico Italiano, IRCCS, Cusano Milanino, Milan, Italy.,Immunology and Rheumatology Unit, San Luca Hospital, Istituto Auxologico Italiano, IRCCS, Milan, Italy.,Rheumatology and Clinical Immunology Department, Faculty of Medicine, Alexandria University, Alexandria, Egypt
| | - Laura Trespidi
- Department of Obstetrics and Gynaecology, Fondazione Cà Granda, Ospedale Maggiore Policlinico, Milan, Italy
| | - Maria Gerosa
- Division of Clinical Rheumatology, Research Center for Adult and Pediatric Rheumatic Diseases, ASST G. Pini & CTO, Milan, Italy.,Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
| | - Manuela Wally Ossola
- Department of Obstetrics and Gynaecology, Fondazione Cà Granda, Ospedale Maggiore Policlinico, Milan, Italy
| | - Pier Luigi Meroni
- Experimental Laboratory of Immunological and Rheumatologic Researches, Istituto Auxologico Italiano, IRCCS, Cusano Milanino, Milan, Italy.,Immunology and Rheumatology Unit, San Luca Hospital, Istituto Auxologico Italiano, IRCCS, Milan, Italy
| | - Cecilia B Chighizola
- Experimental Laboratory of Immunological and Rheumatologic Researches, Istituto Auxologico Italiano, IRCCS, Cusano Milanino, Milan, Italy.,Immunology and Rheumatology Unit, San Luca Hospital, Istituto Auxologico Italiano, IRCCS, Milan, Italy
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Pericleous C, D'Souza A, McDonnell T, Ripoll VM, Leach O, Isenberg D, Giles I, Rahman A. Antiphospholipid antibody levels in early systemic lupus erythematosus: are they associated with subsequent mortality and vascular events? Rheumatology (Oxford) 2020; 59:146-152. [PMID: 31257438 PMCID: PMC6909892 DOI: 10.1093/rheumatology/kez239] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 05/13/2019] [Indexed: 12/16/2022] Open
Abstract
OBJECTIVES aPL are present in between 20 and 30% of patients with SLE. They can cause vascular events (VE) or pregnancy morbidity. aCL and anti-beta-2-glycoprotein I (anti-β2GPI) are measured in clinical practice. Domain I (DI) of β2GPI is the main site for aPL binding. We investigated the prevalence of IgG anti-DI, aCL and anti-β2GPI antibodies in early SLE and their association with mortality and development of VE. METHODS Samples from 501 patients with SLE that had been obtained and stored early during their disease were tested for IgG anti-DI, aCL and anti-β2GPI antibodies by ELISA. LA status and history of VE were obtained by reviewing medical records. Kaplan-Meier analysis was used to investigate mortality and occurrence of VE, comparing groups with and without aPL in early disease. RESULTS Of 501 patients, 190 (38%) had at least one of these aPL, of whom 112 had anti-DI alone. Of 276 patients with complete vascular history, 83 had experienced VE. The 39 patients who were double or triple-ELISA-positive for any combination of the three aPL were more likely to have or develop lupus anticoagulant (P<0.0001) than those who were single-ELISA-positive or negative. In Kaplan-Meier analysis, they showed a trend towards developing more VE (P = 0.06). CONCLUSION IgG anti-DI antibodies were present in early serum samples from 29% of patients and were more common than IgG aCL or anti-β2GPI. There was some evidence suggesting that double or triple-ELISA-positivity for these antibodies identified a group with worse outcomes.
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Affiliation(s)
- Charis Pericleous
- Division of Medicine, Centre for Rheumatology Research, University College London, London, UK
| | - Amrita D'Souza
- Division of Medicine, Centre for Rheumatology Research, University College London, London, UK
| | - Thomas McDonnell
- Division of Medicine, Centre for Rheumatology Research, University College London, London, UK
| | - Vera M Ripoll
- Division of Medicine, Centre for Rheumatology Research, University College London, London, UK
| | - Oliver Leach
- Division of Medicine, Centre for Rheumatology Research, University College London, London, UK
| | - David Isenberg
- Division of Medicine, Centre for Rheumatology Research, University College London, London, UK
| | - Ian Giles
- Division of Medicine, Centre for Rheumatology Research, University College London, London, UK
| | - Anisur Rahman
- Division of Medicine, Centre for Rheumatology Research, University College London, London, UK
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Nascimento IS, Radin M, Gândara APR, Sciascia S, de Andrade DCO. Global antiphospholipid syndrome score and anti-ß2-glycoprotein I domain I for thrombotic risk stratification in antiphospholipid syndrome: A four-year prospective study. Lupus 2020; 29:676-685. [DOI: 10.1177/0961203320916527] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Objective This study aimed to assess prospectively the role of anti-ß2-glycoprotein I domain I antibody (aß2GPI-DI) and the Global Antiphospholipid Syndrome Score (GAPSS) in identifying antiphospholipid syndrome (APS) patients at higher risk of a new event. Methods Thrombotic APS patients were followed from May 2013 to July 2017. At baseline, we measured lupus anticoagulant, IgG/IgM anticardiolipin, anti-ß2-glycoprotein I, antiphosphatidylserine-prothrombin (aPS/PT) and IgG aß2GPI-DI, and calculated GAPSS for each patient. Results A total of 44 patients (age 43 ± 10 years, 89% female, 73% primary APS) were followed for 39 months (range 9–46 months). Four new thromboses occurred, two of them after vitamin K antagonist interruption. Recurrent patients presented higher GAPSS (median 20) and were triple and aß2GPI-DI positive; non-recurrent patients had lower GAPSS (median 10.5, range 0–20) and lower ratio of triple (33%) and aß2GPI-DI positivities (38%). aß2GPI-DI was associated with higher GAPSS (median 19 vs. 7, p < 0.001; Pearson correlation 0.82, p < 0.001) and had a greater proportion of triple (83% vs. 4%, p < 0.001) and aPS/PT positivity (94% vs. 50%, p = 0.002). Conclusion Our data show a significant correlation between a validated risk score such as GAPSS and the novel antiphospholipid antibody aß2GPI-DI. Future studies are needed. However, one could speculate a role of aß2GPI-DI as a risk-stratifying tool for thrombotic events in APS.
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Affiliation(s)
- Iana Sousa Nascimento
- Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Massimo Radin
- Center of Research of Immunopathology and Rare Diseases – Coordinating Centre of Piemonte and Valle d’Aosta Network for Rare Diseases, Department of Clinical and Biological Sciences, and SCDU Nephrology and Dialysis, S. Giovanni Bosco Hospital, University of Turin, Turin, Italy
| | - Ana Paula Rossi Gândara
- Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Savino Sciascia
- Center of Research of Immunopathology and Rare Diseases – Coordinating Centre of Piemonte and Valle d’Aosta Network for Rare Diseases, Department of Clinical and Biological Sciences, and SCDU Nephrology and Dialysis, S. Giovanni Bosco Hospital, University of Turin, Turin, Italy
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Salle V. [Seronegative antiphospholipid syndrome: Myth or reality?]. Rev Med Interne 2020; 41:265-274. [PMID: 32115196 DOI: 10.1016/j.revmed.2020.02.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Revised: 12/23/2019] [Accepted: 02/02/2020] [Indexed: 10/24/2022]
Abstract
The antiphospholipid syndrome (APS) is a systemic autoimmune disease characterized by thrombosis and/or obstetrical manifestations and the persistent presence, at least 12 weeks apart, of antiphospholipid antibodies (aPL) such as lupus anticoagulant (LA) and/or anticardiolipin antibodies (ACL) and/or anti-β2 glycoprotein I antibodies (aβ2GPI). The finding of patients with clinical profile highly suggestive of APS but who are negative for conventional biological criteria has led to the concept of seronegative APS. In the last few years, new antigen targets and methodological approaches have been employed to more clearly identify this syndrome in patients with thrombosis or obstetrical complications without conventional aPL. Although seronegative APS is still controversial, there is increasing recognition of the existence of this subgroup. However, clinical relevance of non conventional aPL need to be confirmed by efforts toward standardizing new biological tools and longitudinal studies involving large cohort of patients.
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Affiliation(s)
- V Salle
- Service de médecine interne, CHU Amiens-Picardie, 1, place Victor-Pauchet, 80054 Amiens cedex 1, France; Laboratoire de biochimie recherche, CHU Amiens-Picardie, Amiens, France.
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Yin D, Chayoua W, Kelchtermans H, de Groot PG, Moore GW, Gris JC, Zuily S, Musial J, de Laat B, Devreese KMJ. Detection of anti-domain I antibodies by chemiluminescence enables the identification of high-risk antiphospholipid syndrome patients: A multicenter multiplatform study. J Thromb Haemost 2020; 18:463-478. [PMID: 31749277 DOI: 10.1111/jth.14682] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 11/06/2019] [Accepted: 11/08/2019] [Indexed: 12/22/2022]
Abstract
BACKGROUND Classification of the antiphospholipid syndrome (APS) relies predominantly on detecting antiphospholipid antibodies (aPLs). Antibodies against a domain I (DI) epitope of anti-β2glycoprotein I (β2GPI) proved to be pathogenic, but are not included in the current classification criteria. OBJECTIVES Investigate the clinical value of detecting anti-DI IgG in APS. PATIENTS/METHODS From eight European centers 1005 patients were enrolled. Anti-cardiolipin (CL) and anti-β2GPI were detected by four commercially available solid phase assays; anti-DI IgG by the QUANTA Flash® β2GPI domain I assay. RESULTS Odds ratios (ORs) of anti-DI IgG for thrombosis and pregnancy morbidity proved to be higher than those of the conventional assays. Upon restriction to patients positive for anti-β2GPI IgG, anti-DI IgG positivity still resulted in significant ORs. When anti-DI IgG was added to the criteria aPLs or used as a substitute for anti-β2GPI IgG/anti-CL IgG, ORs for clinical symptoms hardly improved. Upon removing anti-DI positive patients, lupus anticoagulant remained significantly correlated with clinical complications. Anti-DI IgG are mainly present in high-risk triple positive patients, showing higher levels. Combined anti-DI and triple positivity confers a higher risk for clinical symptoms compared to only triple positivity. CONCLUSIONS Detection of anti-DI IgG resulted in higher ORs for clinical manifestations than the current APS classification criteria. Regardless of the platform used to detect anti-β2GPI/anti-CL, addition of anti-DI IgG measured by QUANTA Flash® did not improve the clinical associations, possibly due to reduced exposure of the pathogenic epitope of DI. Our results demonstrate that anti-DI IgG potentially helps in identifying high-risk patients.
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Affiliation(s)
- Dongmei Yin
- Cardiovascular Research Institute Maastricht, Maastricht University Medical Center, Maastricht, the Netherlands
- Synapse Research Institute, Maastricht, the Netherlands
| | - Walid Chayoua
- Cardiovascular Research Institute Maastricht, Maastricht University Medical Center, Maastricht, the Netherlands
- Synapse Research Institute, Maastricht, the Netherlands
| | - Hilde Kelchtermans
- Cardiovascular Research Institute Maastricht, Maastricht University Medical Center, Maastricht, the Netherlands
- Synapse Research Institute, Maastricht, the Netherlands
| | | | - Gary W Moore
- Viapath Analytics, Department of Haemostasis and Thrombosis, Guy's and St Thomas' Hospitals, London, UK
| | - Jean-Christophe Gris
- Department of Haematology, University Hospital of Nîmes and University of Montpellier, Montpellier, France
- Ivan Sechenov First Moscow State Medical University, Moscow, Russia
| | - Stéphane Zuily
- Inserm, DCAC, Vascular Medicine Division and Regional Competence Center for Rare Vascular and Systemic Autoimmune Diseases, Centre Hospitalier Regional Universitaire de Nancy, Université de Lorraine, Nancy, France
| | - Jacek Musial
- Department of Internal Medicine, Allergy and Immunology, Jagiellonian University Medical College, Kraków, Poland
| | - Bas de Laat
- Cardiovascular Research Institute Maastricht, Maastricht University Medical Center, Maastricht, the Netherlands
- Synapse Research Institute, Maastricht, the Netherlands
| | - Katrien M J Devreese
- Coagulation Laboratory, Department of Laboratory Medicine, Ghent University Hospital, Department of Diagnostic Sciences, Ghent University, Ghent, Belgium
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Liu T, Gu J, Wan L, Hu Q, Teng J, Liu H, Cheng X, Ye J, Su Y, Sun Y, Chi H, Zhou Z, Jia J, Wang Z, Zhou J, Norman GL, Wang X, Yang C, Shi H. Anti-β2GPI domain 1 antibodies stratify high risk of thrombosis and late pregnancy morbidity in a large cohort of Chinese patients with antiphospholipid syndrome. Thromb Res 2019; 185:142-149. [PMID: 31816554 DOI: 10.1016/j.thromres.2019.11.029] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2019] [Revised: 11/19/2019] [Accepted: 11/27/2019] [Indexed: 11/28/2022]
Abstract
INTRODUCTION Anti-β2GPI-Domain 1 (β2GPI-D1) antibodies are considered to be a pathogenic subset of anti-β2GPI antibodies and have been strongly associated with thrombosis and pregnancy morbidity in patients with antiphospholipid syndrome (APS). We evaluated the clinical utility of anti-β2GPI-D1 IgG antibodies for stratifying the risk of thrombosis and/or pregnancy morbidity (PM) in a cohort of Chinese patients with APS and also assessed its correlation with the Global Anti-Phospholipid Syndrome Score (GAPSS). MATERIALS AND METHODS Sera and plasma from 192 consecutive APS patients, 17 aPL carriers, 193 patients with other systemic autoimmune diseases, and 120 healthy controls were collected and the presence of aCL IgG/IgM, anti-β2GPI IgG/IgM and anti-β2GPI-D1 IgG antibodies were assessed by chemiluminescence assays (CIA). Detection of LAC was performed according to international guidelines with the use of screening, mixing and confirmation tests. Anti-phosphatidylserine-prothrombin (aPS/PT) IgG and IgM antibodies were detected by commercial ELISA kits. RESULTS Anti-β2GPI-D1 IgG antibodies showed high specificity (97.12%) and moderate sensitivity (64.32%) for the diagnosis of APS. Anti-β2GPI-D1 antibodies levels were significantly higher in patients with triple aPL positivity than in those with double (P < 0.001) and single positive aPL (P < 0.001) and correlated well with the GAPSS (rho = 0.60, P < 0.001). Anti-β2GPI-D1 antibodies presented with a higher prevalence and higher titers in patients with late pregnancy morbidity (≥10 weeks) and thrombotic APS compared to those with early pregnancy (<10 weeks) morbidity. Higher anti-β2GP1-D1 antibodies titers effectively distinguished APS from other autoimmune diseases. CONCLUSION This study suggests a predictive role of anti-β2GPI-D1 IgG antibodies as a strong risk factor for both thrombotic and obstetric APS (OAPS), especially for stratification comparing early PM with late PM and thrombosis.
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Affiliation(s)
- Tingting Liu
- Department of Rheumatology and Immunology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jieyu Gu
- Department of Rheumatology and Immunology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Liyan Wan
- Department of Rheumatology and Immunology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qiongyi Hu
- Department of Rheumatology and Immunology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jialin Teng
- Department of Rheumatology and Immunology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Honglei Liu
- Department of Rheumatology and Immunology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiaobing Cheng
- Department of Rheumatology and Immunology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Junna Ye
- Department of Rheumatology and Immunology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yutong Su
- Department of Rheumatology and Immunology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yue Sun
- Department of Rheumatology and Immunology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Huihui Chi
- Department of Rheumatology and Immunology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhuochao Zhou
- Department of Rheumatology and Immunology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jinchao Jia
- Department of Rheumatology and Immunology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhihong Wang
- Department of Rheumatology and Immunology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jinfeng Zhou
- Werfen China, 10 Jiuxianqiao RD., Chaoyang District, Beijing, China
| | - Gary L Norman
- Inova Diagnostics, Inc., 9900 Old Grove Road, San Diego, CA 92131, USA
| | - Xuefeng Wang
- Department of Laboratory Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Chengde Yang
- Department of Rheumatology and Immunology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
| | - Hui Shi
- Department of Rheumatology and Immunology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
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11
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Heikal N, Martins TB, White SK, Willis R, Ware Branch D, Schmidt RL, Tebo AE. Laboratory Evaluation of Antiphospholipid Syndrome. Am J Clin Pathol 2019; 152:638-646. [PMID: 31305881 DOI: 10.1093/ajcp/aqz085] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVES Anti-β2 glycoprotein I domain I (anti-domain I) and anti-phosphatidylserine/prothrombin (aPS/PT) antibodies are present in patients with antiphospholipid syndrome (APS); however, their use in evaluation remains unclear. METHODS Diagnostic attributes of lupus anticoagulant (LAC), anti-domain I IgG, anti-cardiolipin, anti-β2 glycoprotein I (anti-β2GPI), and aPS/PT IgG and IgM antibodies were assessed in 216 patients evaluated for APS. RESULTS LAC had the best odds ratio (OR, 14.2) while that for anti-domain 1 IgG was comparable to anti-β2GPI IgG (OR, 8.3 vs 9.4) but higher than all others. Significant correlations were observed for thrombosis (P = .03) and pregnancy-related morbidity (P = .001) with anti-domain IgG and for any thrombosis with aPS/PT IgG (P = .006). Use of noncriteria antiphospholipid with or without criteria markers did not significantly increase the probability to diagnose APS. CONCLUSIONS Noncriteria tests can contribute to diagnosis and stratification of APS but do not improve diagnostic yield. Optimal strategies for implementation require prospective investigation.
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Affiliation(s)
- Nahla Heikal
- ARUP Institute of Clinical and Experimental Pathology, University of Utah School of Medicine, Salt Lake City
- Department of Pathology, University of Utah School of Medicine, Salt Lake City
| | - Thomas B Martins
- ARUP Institute of Clinical and Experimental Pathology, University of Utah School of Medicine, Salt Lake City
| | - Sandra K White
- Department of Pathology, University of Utah School of Medicine, Salt Lake City
| | - Rohan Willis
- Division of Rheumatology, Department of Internal Medicine, University of Texas Medical Branch, Galveston
| | - D Ware Branch
- Division of Maternal-Fetal Medicine, University of Utah School of Medicine, Salt Lake City
- Intermountain Healthcare, Salt Lake City, UT
| | - Robert L Schmidt
- ARUP Institute of Clinical and Experimental Pathology, University of Utah School of Medicine, Salt Lake City
- Department of Pathology, University of Utah School of Medicine, Salt Lake City
| | - Anne E Tebo
- ARUP Institute of Clinical and Experimental Pathology, University of Utah School of Medicine, Salt Lake City
- Department of Pathology, University of Utah School of Medicine, Salt Lake City
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12
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Tonello M, Mattia E, Favaro M, Del Ross T, Calligaro A, Salvan E, Hoxha A, Fedrigo M, Ruffatti A. IgG phosphatidylserine/prothrombin antibodies as a risk factor of thrombosis in antiphospholipid antibody carriers. Thromb Res 2019; 177:157-160. [DOI: 10.1016/j.thromres.2019.03.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Revised: 02/28/2019] [Accepted: 03/07/2019] [Indexed: 10/27/2022]
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13
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Nakamura H, Oku K, Amengual O, Ohmura K, Fujieda Y, Kato M, Bohgaki T, Yasuda S, Atsumi T. First-Line, Non-Criterial Antiphospholipid Antibody Testing for the Diagnosis of Antiphospholipid Syndrome in Clinical Practice: A Combination of Anti-β 2 -Glycoprotein I Domain I and Anti-Phosphatidylserine/Prothrombin Complex Antibodies Tests. Arthritis Care Res (Hoboken) 2019; 70:627-634. [PMID: 28686816 DOI: 10.1002/acr.23310] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Accepted: 06/20/2017] [Indexed: 11/09/2022]
Abstract
OBJECTIVE To assess the value of a combination of anti-β2 -glycoprotein I (anti-β2 GPI) domain I antibody and anti-phosphatidylserine/prothrombin complex (anti-PS/PT) antibody tests for the diagnosis of antiphospholipid syndrome (APS). METHODS This cross-sectional study involved a cohort of the patients who visited our clinic from April 2005 to March 2013. Tests for anti-β2 GPI domain I antibodies, IgG anti-PS/PT antibodies, and IgM anti-PS/PT antibodies, together with tests for criteria-defined antiphospholipid antibodies (aPL), were performed in all patients. The total antiphospholipid score (aPL-S) was calculated for each patient according to titers of and positivity for aPL. RESULTS The study enrolled 157 patients (51 patients with APS and 106 with non-APS autoimmune diseases). All 21 patients positive for both anti-β2 GPI domain I antibodies and IgG and/or IgM (IgG/IgM) anti-PS/PT antibodies had APS with a high total aPL-S (median 46, range 26-76), as did all of the 10 patients who were positive for anti-β2 GPI domain I antibodies but negative for IgG/IgM anti-PS/PT antibodies (median 22, range 4-39). Of the 14 patients who were positive for IgG/IgM anti-PS/PT antibodies but negative for anti-β2 GPI domain I antibodies, 11 (79%) had APS; these individuals also had high total aPL-S values (median 23, range 11-60). In contrast, only 9 of the 112 patients (8%) with none of these antibodies had APS. CONCLUSION The combination of the IgG anti-β2 GPI domain I antibody and IgG/IgM anti-PS/PT antibody tests shows a high positive predictive value for the diagnosis of APS and a strong correlation with the aPL-S. This combination as the first-line test for aPL may contribute to the simple and definite identification of APS with a high risk of thrombosis in clinical practice.
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Affiliation(s)
| | - Kenji Oku
- Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Olga Amengual
- Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Kazumasa Ohmura
- Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Yuichiro Fujieda
- Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Masaru Kato
- Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | | | - Shinsuke Yasuda
- Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Tatsuya Atsumi
- Graduate School of Medicine, Hokkaido University, Sapporo, Japan
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Kato M, Hisada R, Atsumi T. Clinical profiles and risk assessment in patients with antiphospholipid antibodies. Expert Rev Clin Immunol 2018; 15:73-81. [PMID: 30381978 DOI: 10.1080/1744666x.2019.1543025] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
INTRODUCTION Antiphospholipid syndrome (APS) is an acquired autoimmune thrombophilia associated with the presence of persistent antiphospholipid antibodies (aPL). Owing to recent studies, not only APS patients but also incidentally-identified, asymptomatic aPL carriers are able to be stratified in terms of the risk of future thrombotic events, according to the variety and the titer of positive aPL tests and to the non-thrombotic, aPL-associated clinical manifestations. Areas covered: Here, we critically review (1) criteria manifestations of APS, (2) non-criteria manifestations of APS, (3) risk assessment in patients with APS and in aPL carriers, and (4) the potential role of primary thrombosis prophylaxis in aPL carriers. In addition, we discuss what we are currently able to do and what we need to do in the future for primary prophylaxis against a first thrombotic event. Expert commentary: We suggest a comprehensive algorithm to stratify thrombotic risk in aPL carriers, including criteria aPL, non-criteria aPL, their scoring systems, and non-criteria manifestations. However, further studies, particularly prospective randomized controlled trials, are highly warranted to establish an effective and tolerable treatment regimen for high risk aPL carriers.
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Affiliation(s)
- Masaru Kato
- a Department of Rheumatology, Endocrinology and Nephrology, Faculty of Medicine and Graduate School of Medicine , Hokkaido University , Sapporo , Japan
| | - Ryo Hisada
- a Department of Rheumatology, Endocrinology and Nephrology, Faculty of Medicine and Graduate School of Medicine , Hokkaido University , Sapporo , Japan
| | - Tatsuya Atsumi
- a Department of Rheumatology, Endocrinology and Nephrology, Faculty of Medicine and Graduate School of Medicine , Hokkaido University , Sapporo , Japan
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15
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Limper M, Scirè CA, Talarico R, Amoura Z, Avcin T, Basile M, Burmester G, Carli L, Cervera R, Costedoat-Chalumeau N, Doria A, Dörner T, Fonseca JE, Galetti I, Hachulla E, Launay D, Lourenco F, Macieira C, Meroni P, Montecucco CM, Moraes-Fontes MF, Mouthon L, Nalli C, Ramoni V, Tektonidou M, van Laar JM, Bombardieri S, Schneider M, Smith V, Vieira A, Cutolo M, Mosca M, Tincani A. Antiphospholipid syndrome: state of the art on clinical practice guidelines. RMD Open 2018; 4:e000785. [PMID: 30402272 PMCID: PMC6203101 DOI: 10.1136/rmdopen-2018-000785] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Revised: 08/23/2018] [Accepted: 08/28/2018] [Indexed: 01/14/2023] Open
Abstract
Antiphospholipid syndrome (APS) is a rare disease characterised by venous and/or arterial thrombosis, pregnancy complications and the presence of specific autoantibodies called antiphospholipid antibodies. This review aims to identify existing clinical practice guidelines (CPG) as part of the ERN ReCONNET project, aimed at evaluating existing CPGs or recommendations in rare and complex diseases. Seventeen papers providing important data were identified; however, the literature search highlighted the scarceness of reliable clinical data to develop CPGs. With no formal clinical guidelines in place, diagnosis and treatment of APS is largely based on consensus and expert opinion. Patients' unmet need refers to the understanding of the disease and its clinical picture and implications, the need of education for patients, family members and healthcare providers, as well as to the development of monitoring pathways involving multiple healthcare providers.
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Affiliation(s)
- Marteen Limper
- Department of Rheumatology and Clinical Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Carlo Alberto Scirè
- Section of Rheumatology, Department of Medical Sciences, University of Ferrara, Ferrara, Italy
| | | | - Zahir Amoura
- Department of Internal Medicine, Hospital Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Tadej Avcin
- Department of Allergology, Rheumatology and Clinical Immunology, University Children's Hospital, University Medical Centre Ljubljana, Ljubljana, Slovenia
| | | | - Gerd Burmester
- Department of Rheumatology and Clinical Immunology, Charité University Hospital Berlin, Berlin, Germany
| | | | - Ricard Cervera
- Department of Autoimmune Diseases, Hospital Clínic de Barcelona, Barcelona, Spain
| | - Nathalie Costedoat-Chalumeau
- Service de Médecine Interne, Hôpital Cochin, Centre de Référence Maladies systémiques Autoimmunes Rares d’Ile de France, Assistance Publique-Hôpitaux de Paris (AP-HP), Université Paris Descartes, Paris, France
| | - Andrea Doria
- Rheumatology Unit, Department of Medicine, AO Padova and University of Padua, Padua, Italy
| | - Thomas Dörner
- Department of Rheumatology and Clinical Immunology, Charité University Hospital Berlin, Berlin, Germany
| | - João Eurico Fonseca
- Rheumatology Department, Hospital de Santa Maria, Centro Hospitalar Lisboa Norte, Lisbon Academic Medical Centre, Lisbon, Portugal
| | - Ilaria Galetti
- Federation of European Scleroderma Associations (FESCA), Milan, Italy
| | - Eric Hachulla
- Département de Médecine Interne et Immunologie Clinique, Centre de Référence des Maladies Systémiques et Auto-Immunes Rares du Nord-Ouest (CERAINO), LIRIC, INSERM, Univ. Lille, CHU Lille, Lille, France
| | - David Launay
- Département de Médecine Interne et Immunologie Clinique, Centre de Référence des Maladies Systémiques et Auto-Immunes Rares du Nord-Ouest (CERAINO), LIRIC, INSERM, Univ. Lille, CHU Lille, Lille, France
| | - Filipa Lourenco
- Auto-immune Disease Unit, Hospital de Curry Cabral, Centro Hospitalar de Lisboa Central, EPE, Lisbon, Portugal
| | - Carla Macieira
- Rheumatology Department, Hospital de Santa Maria, Centro Hospitalar Lisboa Norte, Lisbon Academic Medical Centre, Lisbon, Portugal
| | - Pierluigi Meroni
- Division of Rheumatology, ASST.G Pini, Department of Clinical Sciences and Community Health, University of Milan and Istituto Auxologico Italiano, Milan, Italy
| | | | | | - Luc Mouthon
- Service de Médecine Interne, Hôpital Cochin, Centre de Référence Maladies systémiques Autoimmunes Rares d’Ile de France, Assistance Publique-Hôpitaux de Paris (AP-HP), Université Paris Descartes, Paris, France
| | - Cecilia Nalli
- Rheumatology and Clinical Immunology Unit, Civil Hospital, Brescia, Italy
| | - Veronique Ramoni
- Division of Rheumatology, University and IRCCS Policlinico S. Matteo Foundation, Pavia, Italy
| | - Maria Tektonidou
- Joint Rheumatology Academic Program, First Department of Propaedeutic Internal Medicine, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Jacob M van Laar
- Department of Rheumatology and Clinical Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | | | - Matthias Schneider
- Department of Rheumatology, Universitätsklinikum Düsseldorf, Düsseldorf, Germany
| | - Vanessa Smith
- Department of Rheumatology, Ghent University Hospital, Ghent, Belgium
- Department of Internal Medicine, Ghent University, Ghent, Belgium
| | - Ana Vieira
- Liga Portuguesa Contra as Doenças Reumáticas, Núcleo Síndrome de Sjögren, Lisbon, Portugal
| | - Maurizio Cutolo
- Research Laboratory and Academic Division of Clinical Rheumatology, Department of Internal Medicine, IRCCS Polyclinic Hospital San Martino, University of Genoa, Genoa, Italy
| | - Marta Mosca
- Rheumatology Unit, AOU Pisana, Pisa, Italy
- Rheumatology Unit, University of Pisa, Pisa, Italy
| | - Angela Tincani
- Rheumatology and Clinical Immunology Unit, Civil Hospital, Brescia, Italy
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Yin D, de Laat B, Devreese KMJ, Kelchtermans H. The clinical value of assays detecting antibodies against domain I of β2-glycoprotein I in the antiphospholipid syndrome. Autoimmun Rev 2018; 17:1210-1218. [PMID: 30316989 DOI: 10.1016/j.autrev.2018.06.011] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Accepted: 06/18/2018] [Indexed: 02/07/2023]
Abstract
As the clinical symptoms of the antiphospholipid syndrome (APS) frequently occur irrespective of the syndrome, diagnosis predominantly depends on the laboratory assays measuring the level or function of antiphospholipid antibodies (aPLs). β2-glycoprotein I (β2GPI) is increasingly accepted as the most important target of aPLs. Anti-β2GPI antibodies constitute a heterogeneous population, but current in vivo and in vitro evidence show that especially the first domain (DI) of β2GPI contains an important pathogenic epitope. This epitope containing Glycine40-Arginine43 (G40-R43) has proven to be cryptic and only exposed when β2GPI is in its open conformation. A previous study demonstrated a highly variable exposure of the cryptic epitope in commercial anti-β2GPI assays, with implications on correct patient classification. Unexpectedly, recent unpublished data revealed impaired exposure of the pathogenic epitope in the commercially available anti-DI chemiluminescence immunoassay (CIA) assay detecting specific antibodies directed to DI. In this review we summarize the laboratory and clinical performance characteristics of the different anti-DI assays in published data and conclude with inconsistent results for both the correlation of anti-DI antibodies with clinical symptoms and the added value of anti-DI antibodies in the classification criteria of APS. Additionally, we hypothesize on possible explanations for the observed discrepancies. Finally, we highly advise manufacturers to use normal pooled plasma spiked with the monoclonal anti-DI antibodies to verify correct exposure of the cryptic epitope.
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Affiliation(s)
- Dongmei Yin
- Cardiovascular Research Institute Maastricht, Maastricht University Medical Center, Maastricht, the Netherlands,; Synapse Research Institute, Maastricht, the Netherlands.
| | - Bas de Laat
- Cardiovascular Research Institute Maastricht, Maastricht University Medical Center, Maastricht, the Netherlands,; Synapse Research Institute, Maastricht, the Netherlands.
| | - Katrien M J Devreese
- Coagulation Laboratory, Department of Laboratory Medicine, Ghent University Hospital, Department of Diagnostic Sciences, Ghent University, Ghent, Belgium.
| | - Hilde Kelchtermans
- Cardiovascular Research Institute Maastricht, Maastricht University Medical Center, Maastricht, the Netherlands,; Synapse Research Institute, Maastricht, the Netherlands.
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Zuo Y, Barbhaiya M, Erkan D. Primary Thrombosis Prophylaxis in Persistently Antiphospholipid Antibody-Positive Individuals: Where Do We Stand in 2018? Curr Rheumatol Rep 2018; 20:66. [DOI: 10.1007/s11926-018-0775-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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18
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Tonello M, Mattia E, Del Ross T, Favaro M, Calligaro A, Hoxha A, Bison E, Pengo V, Ruffatti A. Clinical value of anti-domain I-β2Glycoprotein 1 antibodies in antiphospholipid antibody carriers. A single centre, prospective observational follow-up study. Clin Chim Acta 2018; 485:74-78. [PMID: 29953850 DOI: 10.1016/j.cca.2018.06.037] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Revised: 06/19/2018] [Accepted: 06/23/2018] [Indexed: 10/28/2022]
Abstract
BACKGROUND There seems to be a clear correlation between antibodies against domain I (anti-DI) of β2Glycoprotein I and severe clinical profiles in antiphospholipid syndrome (APS) patients. We investigated the clinical significance of anti-DI antibodies in a cohort of aPL carriers. METHODS One hundred and five carriers persistently positive for IgG anti-β2Glycoprotein 1 antibodies (a-β2GPI) and/or IgG anticardiolipin (aCL) and/or lupus anticoagulants (LAC) were tested for the presence of anti-DI antibodies using the QUANTA Flash® Beta2GPI-Domain I chemiluminescence immunoassay. RESULTS Anti-DI antibodies were detected in 44 aPL carriers (41.9%) and they were significantly associated to triple aPL positivity (LAC plus IgG a-β2GPI plus IgG aCL antibodies). Isolated LAC and a-β2GPI antibodies were significantly associated to anti-DI negative aPL carriers. During a 82.2 month mean follow-up, ten aPL carriers (9.5%) developed a first thrombotic event so becoming APS patients. Anti-DI antibodies, triple aPL positivity, thromboembolic risk factors and autoimmune disorders significantly prevailed in carriers becoming APS. Logistic regression analysis showed that anti-DI positivity was an independent risk factor for thrombosis. CONCLUSIONS Anti-DI antibody positivity can be considered a new risk factor predictive of the first thrombotic event in aPL carriers, instead, negative anti-DI may be useful to identify low-risk aPL carriers.
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Affiliation(s)
- M Tonello
- Rheumatology Unit, Department of Medicine-DIMED, University of Padua, Padua, Italy.
| | - E Mattia
- Rheumatology Unit, Department of Medicine-DIMED, University of Padua, Padua, Italy
| | - T Del Ross
- Rheumatology Unit, Department of Medicine-DIMED, University of Padua, Padua, Italy
| | - M Favaro
- Rheumatology Unit, Department of Medicine-DIMED, University of Padua, Padua, Italy
| | - A Calligaro
- Rheumatology Unit, Department of Medicine-DIMED, University of Padua, Padua, Italy
| | - A Hoxha
- Rheumatology Unit, Department of Medicine-DIMED, University of Padua, Padua, Italy
| | - E Bison
- Cardiology Clinic, Department of Cardiac, Thoracic and Vascular Sciences, University of Padua, Padua, Italy
| | - V Pengo
- Cardiology Clinic, Department of Cardiac, Thoracic and Vascular Sciences, University of Padua, Padua, Italy
| | - A Ruffatti
- Rheumatology Unit, Department of Medicine-DIMED, University of Padua, Padua, Italy
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Martins TB, Heikal N, Miller J, Willis R, Schmidt RL, Tebo AE. Assessment of diagnostic methods for the detection of anticardiolipin and anti-βeta 2 glycoprotein I antibodies in patients under routine evaluation for antiphospholipid syndrome. Clin Chim Acta 2018; 485:7-13. [PMID: 29883633 DOI: 10.1016/j.cca.2018.06.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Revised: 06/02/2018] [Accepted: 06/04/2018] [Indexed: 10/14/2022]
Abstract
BACKGROUND We assessed the performance characteristics and correlations of the traditional enzyme-linked immunosorbent assay (ELISA) and chemiluminescence immunoassay (CIA) for detecting IgG and IgM antibodies to cardiolipin (aCL) and beta2 glycoprotein (anti-β2GPI) antibodies in patients under routine evaluation for APS. METHODS Patients (n = 216) referred to ARUP Laboratories for lupus anticoagulant (LAC) and/or aCL or anti-β2GPI IgG/IgM antibodies evaluation were assessed by ELISA and CIA methods. Diagnostic accuracies, correlations between methods and specific clinical manifestations in APS were investigated. RESULTS The areas under the curve (%) for APS using LAC with CIA (74, 95% CI: 65-82) or ELISA (70, 95% CI: 61-79) aPLs were comparable. The overall agreements and linear regression correlations between methods for aPL antibody of the same specificity were variable: aCL IgG 87.3%; R2 = 0.7491, aCL IgM 71.6%; R2 = 0.2656, anti-β2GPI IgG 77.2%; R2 = 0.7688 and anti-β2GPI IgM 81.7%; R2 = 0.3305. CONCLUSIONS With inclusion of LAC, the ELISA and CIA show comparable performance for the diagnosis of APS. However, correlations of APS-specific manifestations were dependent on method of detecting the aPL antibodies suggesting platforms may not be used interchangeable.
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Affiliation(s)
- Thomas B Martins
- ARUP Institute of Clinical and Experimental Pathology, Salt Lake City, UT, USA
| | - Nahla Heikal
- ARUP Institute of Clinical and Experimental Pathology, Salt Lake City, UT, USA; Department of Pathology, University of Utah School of Medicine, Salt Lake City, UT, USA
| | | | - Rohan Willis
- Rheumatology/Internal Medicine, University of Texas Medical Branch, Galveston, TX, USA
| | - Robert L Schmidt
- ARUP Institute of Clinical and Experimental Pathology, Salt Lake City, UT, USA; Department of Pathology, University of Utah School of Medicine, Salt Lake City, UT, USA
| | - Anne E Tebo
- ARUP Institute of Clinical and Experimental Pathology, Salt Lake City, UT, USA; Department of Pathology, University of Utah School of Medicine, Salt Lake City, UT, USA.
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Anti-phospholipid IgG antibodies detected by line immunoassay differentiate patients with anti-phospholipid syndrome and other autoimmune diseases. AUTOIMMUNITY HIGHLIGHTS 2018; 9:6. [PMID: 29845583 PMCID: PMC5975024 DOI: 10.1007/s13317-018-0106-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/06/2018] [Accepted: 05/14/2018] [Indexed: 12/20/2022]
Abstract
Purpose Anti-phospholipid antibodies (aPL) analyzed by line immunoassay (LIA) can recognize beta2-glycoprotein I (β2GPI) domain 1 (D1) epitopes depending on β2GPI binding to distinct phospholipids. The aPL LIA was compared with consensus ELISA to investigate whether both techniques can discriminate anti-phospholipid syndrome (APS) patients from aPL-positive, systemic autoimmune rheumatic diseases (SARD) patients without clinical symptoms of APS and controls. Methods Thirty-four APS patients (14 arterial/venous thrombosis, 16 pregnancy morbidity, and 4 both), 41 patients with SARD lacking clinical APS criteria but demonstrating positivity for anti-β2GPI (aβ2GPI) IgG, and 20 healthy subjects (HS) were tested for aPL to cardiolipin (aCL), phosphatidic acid, phosphatidylcholine, phosphatidylethanolamine, phosphatidylglycerol (aPG), phosphatidylinositol, phosphatidylserine, β2GPI, prothrombin, and annexin V by LIA. Samples were also tested for aCL, aβ2GPI, aβ2GPI-domain 1 (aD1), and aβ2GPI-domains 4–5 (aD4–5) by ELISA and for lupus anti-coagulant. Results Comparison of LIA with ELISA revealed a good agreement for the consensus criteria aPL aβ2GPI and aCL IgG (kappa = 0.69, 0.68, respectively) and a moderate agreement for IgM (kappa = 0.52, 0.49, respectively). Regarding ELISA, aD1/aD4–5 demonstrated the best performance of differentiating APS from asymptomatic SARD [area under the curve (AUC): 0.76]. aPG IgG had the best performance by LIA (AUC: 0.72) not significantly different from aD1/aD4–5. There was a good agreement for aPG IgG with aD1/aD4–5 (kappa = 0.71). Conclusions aD1/aD4–5 (ELISA) and aPG IgG (LIA) differentiate APS from SARD patients. PG appears to interact with β2GPI of APS patients and exposes D1 thereof for disease-specific aPL binding in LIA.
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Devreese KMJ, Ortel TL, Pengo V, de Laat B. Laboratory criteria for antiphospholipid syndrome: communication from the SSC of the ISTH. J Thromb Haemost 2018; 16:809-813. [PMID: 29532986 DOI: 10.1111/jth.13976] [Citation(s) in RCA: 164] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Indexed: 01/16/2023]
Affiliation(s)
- K M J Devreese
- Coagulation Laboratory, Department of Laboratory Medicine, Ghent University Hospital, Ghent, Belgium
| | - T L Ortel
- Departments of Medicine and Pathology, Duke University Medical Center, Durham, NC, USA
| | - V Pengo
- Cardiology Department, University of Padova, Padova, Italy
| | - B de Laat
- Department of Biochemistry, Maastricht University, Maastricht, the Netherlands
- Synapse BV, Maastricht, the Netherlands
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Cavazzana I, Andreoli L, Limper M, Franceschini F, Tincani A. Update on Antiphospholipid Syndrome: Ten Topics in 2017. Curr Rheumatol Rep 2018. [DOI: 10.1007/s11926-018-0718-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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23
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Chighizola CB, Pregnolato F, Andreoli L, Bodio C, Cesana L, Comerio C, Gerosa M, Grossi C, Kumar R, Lazzaroni MG, Mahler M, Mattia E, Nalli C, Norman GL, Raimondo MG, Ruffatti A, Tonello M, Trespidi L, Tincani A, Borghi MO, Meroni PL. Beyond thrombosis: Anti-β2GPI domain 1 antibodies identify late pregnancy morbidity in anti-phospholipid syndrome. J Autoimmun 2018; 90:76-83. [PMID: 29454510 DOI: 10.1016/j.jaut.2018.02.002] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2017] [Revised: 02/02/2018] [Accepted: 02/05/2018] [Indexed: 12/22/2022]
Abstract
Antibodies against β2 glycoprotein I (anti-β2GPI) have been identified as the main pathogenic autoantibody subset in anti-phospholipid syndrome (APS); the most relevant epitope is a cryptic and conformation-dependent structure on β2GPI domain (D) 1. Anti-β2GPI domain profiling has been investigated in thrombotic APS, leading to the identification of antibodies targeting D1 as the main subpopulation. In contrast, scarce attention has been paid to obstetric APS, hence this study aimed at characterizing the domain reactivity with regards to pregnancy morbidity (PM). To this end, 135 women with persistently positive, medium/high titre anti-β2GPI IgG, without any associated systemic autoimmune diseases and at least one previous pregnancy were included: 27 asymptomatic carriers; 53 women with obstetric APS; 20 women with thrombotic APS; and 35 women with both thrombotic and obstetric complications. Anti-D1 and anti-D4/5 antibodies were tested using a chemiluminescent immunoassay and a research ELISA assay, respectively (QUANTA Flash® β2GPI Domain 1 IgG and QUANTA Lite® β2GPI D4/5 IgG, Inova Diagnostics). Positivity for anti-D1 antibodies, but not anti-D4/5 antibodies, was differently distributed across the 4 subgroups of patients (p < 0.0001) and significantly correlated with thrombosis (χ2 = 17.28, p < 0.0001) and PM (χ2 = 4.28, p = 0.039). Patients with triple positivity for anti-phospholipid antibodies displayed higher anti-D1 titres and lower anti-D4/5 titres compared to women with one or two positive tests (p < 0.0001 and p = 0.005, respectively). Reactivity against D1 was identified as a predictor for PM (OR 2.4, 95% confidence interval [CI] 1.2-5.0, p = 0.017); in particular, anti-D1 antibodies were predictive of late PM, conveying an odds ratio of 7.3 (95% CI 2.1-25.5, p = 0.022). Positivity for anti-D1 antibodies was not associated with early pregnancy loss. Anti-D4/5 antibodies were not associated with clinical APS manifestations. As a whole, our data suggest that anti-D1 antibodies are significantly associated not only with thrombosis, but also with late PM, while positive anti-D4/5 antibodies are not predictive of thrombosis or PM.
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Affiliation(s)
- Cecilia Beatrice Chighizola
- Department of Clinical Sciences and Community Health, University of Milan, Via Festa del Perdono 7, 20122 Milan, Italy; Experimental Laboratory of Immunological and Rheumatologic Researches, IRCCS Istituto Auxologico Italiano, Via Zucchi 18, 20095 Cusano Milanino, Milan, Italy
| | - Francesca Pregnolato
- Experimental Laboratory of Immunological and Rheumatologic Researches, IRCCS Istituto Auxologico Italiano, Via Zucchi 18, 20095 Cusano Milanino, Milan, Italy
| | - Laura Andreoli
- Rheumatology and Clinical Immunology, Spedali Civili of Brescia, University of Brescia, Piazzale Spedali Civili 1, 25123 Brescia, Italy; Department of Clinical and Experimental Sciences, University of Brescia, Piazzale Spedali Civili 1, 25123 Brescia, Italy
| | - Caterina Bodio
- Department of Clinical Sciences and Community Health, University of Milan, Via Festa del Perdono 7, 20122 Milan, Italy; Experimental Laboratory of Immunological and Rheumatologic Researches, IRCCS Istituto Auxologico Italiano, Via Zucchi 18, 20095 Cusano Milanino, Milan, Italy
| | - Laura Cesana
- Experimental Laboratory of Immunological and Rheumatologic Researches, IRCCS Istituto Auxologico Italiano, Via Zucchi 18, 20095 Cusano Milanino, Milan, Italy
| | - Chiara Comerio
- Department of Obstetrics and Gynaecology, Fondazione Cà Granda, Ospedale Maggiore Policlinico, Via della Commenda 12, 20122 Milan, Italy
| | - Maria Gerosa
- Department of Clinical Sciences and Community Health, University of Milan, Via Festa del Perdono 7, 20122 Milan, Italy; Department of Rheumatology, ASST Istituto Gaetano Pini & CTO, Piazza Cardinal Ferrari, 1 20122 Milan, Italy
| | - Claudia Grossi
- Experimental Laboratory of Immunological and Rheumatologic Researches, IRCCS Istituto Auxologico Italiano, Via Zucchi 18, 20095 Cusano Milanino, Milan, Italy
| | - Rajesh Kumar
- Rheumatology and Clinical Immunology, Spedali Civili of Brescia, University of Brescia, Piazzale Spedali Civili 1, 25123 Brescia, Italy; Department of Clinical and Experimental Sciences, University of Brescia, Piazzale Spedali Civili 1, 25123 Brescia, Italy
| | - Maria Grazia Lazzaroni
- Rheumatology and Clinical Immunology, Spedali Civili of Brescia, University of Brescia, Piazzale Spedali Civili 1, 25123 Brescia, Italy; Department of Clinical and Experimental Sciences, University of Brescia, Piazzale Spedali Civili 1, 25123 Brescia, Italy
| | - Michael Mahler
- INOVA Diagnostics, 9900 Old Grove Road, San Diego, CA 92131-1638, USA
| | - Elena Mattia
- Rheumatology Unit, Department of Medicine, University of Padua, via Giustiniani 2, 35128 Padua, Italy
| | - Cecilia Nalli
- Rheumatology and Clinical Immunology, Spedali Civili of Brescia, University of Brescia, Piazzale Spedali Civili 1, 25123 Brescia, Italy; Department of Clinical and Experimental Sciences, University of Brescia, Piazzale Spedali Civili 1, 25123 Brescia, Italy
| | - Gary L Norman
- INOVA Diagnostics, 9900 Old Grove Road, San Diego, CA 92131-1638, USA
| | - Maria Gabriella Raimondo
- Department of Clinical Sciences and Community Health, University of Milan, Via Festa del Perdono 7, 20122 Milan, Italy; Department of Rheumatology, ASST Istituto Gaetano Pini & CTO, Piazza Cardinal Ferrari, 1 20122 Milan, Italy
| | - Amelia Ruffatti
- Rheumatology Unit, Department of Medicine, University of Padua, via Giustiniani 2, 35128 Padua, Italy
| | - Marta Tonello
- Rheumatology Unit, Department of Medicine, University of Padua, via Giustiniani 2, 35128 Padua, Italy
| | - Laura Trespidi
- Department of Obstetrics and Gynaecology, Fondazione Cà Granda, Ospedale Maggiore Policlinico, Via della Commenda 12, 20122 Milan, Italy
| | - Angela Tincani
- Rheumatology and Clinical Immunology, Spedali Civili of Brescia, University of Brescia, Piazzale Spedali Civili 1, 25123 Brescia, Italy; Department of Clinical and Experimental Sciences, University of Brescia, Piazzale Spedali Civili 1, 25123 Brescia, Italy
| | - Maria Orietta Borghi
- Department of Clinical Sciences and Community Health, University of Milan, Via Festa del Perdono 7, 20122 Milan, Italy; Experimental Laboratory of Immunological and Rheumatologic Researches, IRCCS Istituto Auxologico Italiano, Via Zucchi 18, 20095 Cusano Milanino, Milan, Italy
| | - Pier Luigi Meroni
- Department of Clinical Sciences and Community Health, University of Milan, Via Festa del Perdono 7, 20122 Milan, Italy; Experimental Laboratory of Immunological and Rheumatologic Researches, IRCCS Istituto Auxologico Italiano, Via Zucchi 18, 20095 Cusano Milanino, Milan, Italy; Department of Rheumatology, ASST Istituto Gaetano Pini & CTO, Piazza Cardinal Ferrari, 1 20122 Milan, Italy.
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Abstract
Antiphospholipid syndrome (APS) is an autoimmune disease characterized by the presence of antiphospholipid antibodies, such as lupus anticoagulant, anticardiolipin antibodies and anti-β2-glycoprotein 1 antibodies. APS can present with a variety of clinical phenotypes, including thrombosis in the veins, arteries and microvasculature as well as obstetrical complications. The pathophysiological hallmark is thrombosis, but other factors such as complement activation might be important. Prevention of thrombotic manifestations associated with APS includes lifestyle changes and, in individuals at high risk, low-dose aspirin. Prevention and treatment of thrombotic events are dependent mainly on the use of vitamin K antagonists. Immunosuppression and anticomplement therapy have been used anecdotally but have not been adequately tested. Pregnancy morbidity includes unexplained recurrent early miscarriage, fetal death and late obstetrical manifestation such as pre-eclampsia, premature birth or fetal growth restriction associated with placental insufficiency. Current treatment to prevent obstetrical morbidity is based on low-dose aspirin and/or low-molecular-weight heparin and has improved pregnancy outcomes to achieve successful live birth in >70% of pregnancies. Although hydroxychloroquine and pravastatin might further improve pregnancy outcomes, prospective clinical trials are required to confirm these findings.
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Nojima J, Motoki Y, Hara K, Sakata T, Tsuneoka H, Ichihara K. Detection of antibodies against domain 1 of β 2 -glycoprotein I is key in predicting thromboembolic complications in patients with systemic lupus erythematosus. Thromb Res 2017; 153:83-84. [DOI: 10.1016/j.thromres.2017.02.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Revised: 01/18/2017] [Accepted: 02/01/2017] [Indexed: 11/16/2022]
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26
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Clinical significance of anti-domain 1 β2-glycoprotein I antibodies in antiphospholipid syndrome. Thromb Res 2017; 153:90-94. [DOI: 10.1016/j.thromres.2017.02.019] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Revised: 01/29/2017] [Accepted: 02/22/2017] [Indexed: 11/19/2022]
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Norfun P, Jumpathong W, Kungwan N, Jakmunee J, Ounnunkad K. Electroanalytical Application of Screen-printed Carbon Electrode Modified with Conductive Graphene Oxide–Poly(acrylic acid) Film for Label-free Detection of Human Immunoglobulin G. CHEM LETT 2016. [DOI: 10.1246/cl.160715] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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28
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De Craemer AS, Musial J, Devreese KMJ. Role of anti-domain 1-β2 glycoprotein I antibodies in the diagnosis and risk stratification of antiphospholipid syndrome. J Thromb Haemost 2016; 14:1779-87. [PMID: 27314634 DOI: 10.1111/jth.13389] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Accepted: 05/12/2016] [Indexed: 11/26/2022]
Abstract
UNLABELLED Essentials Antibodies to domain 1 of β2 glycoprotein I (aD1) are a subset of antiphospholipid antibodies. We evaluated the added diagnostic value of an automated aD1 assay in antiphospholipid syndrome. AD1 IgG correctly classifies patients at risk for thrombosis. Agreement between aD1 and aβ2GPI IgG is high, limiting the added value of aD1 in our setting. Click to hear Professor de Groot's perspective on new mechanistic understanding in antiphospholipid syndrome SUMMARY Background Laboratory diagnosis of antiphospholipid syndrome (APS) includes lupus anticoagulant (LAC), anticardiolipin (aCL) or anti-β2 glycoprotein I (aβ2 GPI) antibodies. Antibodies targeting domain 1 of β2 GPI (aD1) constitute a pathogenic subset of autoantibodies. Objectives In this cohort study, we determined the clinical performance characteristics, additional diagnostic value and the contribution to APS risk stratification of an automated aD1 assay. Patients/Methods LAC, aCL, aβ2 GPI and aD1 IgG were measured in 101 APS patients, 123 patients with autoimmune disorders, 82 diseased controls and 120 healthy controls. aD1 antibodies were detected by QUANTA Flash(®) Beta2GPI-Domain 1 chemiluminescence immunoassay. Results With a cut-off value of 20.0 CU, the aD1 IgG assay identifies APS patients in a clinically affected patient cohort with a sensitivity of 53.5% and specificity of 98.8%. It implied a high odds ratio (OR) for clinical events (OR, 17.0; 95% confidence interval [CI], 7.1-40.5). aD1 IgG did not add diagnostic value to the formal aPL panel because aβ2 GPI IgG was nearly as specific but more sensitive for APS (sensitivity 56.4%) with a higher OR for clinical events (36.2; 95% CI, 11.1-117.9). High aD1 titers identify triple-positive patients and patients with thrombosis in a β2 GPI-dependent LAC-positive population. Agreement between aD1 IgG and aβ2 GPI IgG was high (positive and negative agreement 91.7% and 98.4%, respectively). Conclusion Detection of aD1 IgG correctly classifies patients at risk of thrombosis. However, the contribution of aD1 IgG to APS diagnosis and risk stratification depends upon the solid phase assays used for aCL and aβ2 GPI detection.
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Affiliation(s)
- A-S De Craemer
- Coagulation Laboratory, Department of Clinical Chemistry, Microbiology and Immunology, Ghent University Hospital, Ghent, Belgium
| | - J Musial
- Department of Medicine, Jagiellonian University Medical College, Krakow, Poland
| | - K M J Devreese
- Coagulation Laboratory, Department of Clinical Chemistry, Microbiology and Immunology, Ghent University Hospital, Ghent, Belgium.
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Ho YC, Ahuja KDK, Körner H, Adams MJ. β 2GP1, Anti-β 2GP1 Antibodies and Platelets: Key Players in the Antiphospholipid Syndrome. Antibodies (Basel) 2016; 5:E12. [PMID: 31557993 PMCID: PMC6698853 DOI: 10.3390/antib5020012] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Revised: 04/26/2016] [Accepted: 04/26/2016] [Indexed: 12/21/2022] Open
Abstract
Anti-beta 2 glycoprotein 1 (anti-β2GP1) antibodies are commonly found in patients with autoimmune diseases such as the antiphospholipid syndrome (APS) and systemic lupus erythematosus (SLE). Their presence is highly associated with increased risk of vascular thrombosis and/or recurrent pregnancy-related complications. Although they are a subtype of anti-phospholipid (APL) antibody, anti-β2GP1 antibodies form complexes with β2GP1 before binding to different receptors associated with anionic phospholipids on structures such as platelets and endothelial cells. β2GP1 consists of five short consensus repeat termed "sushi" domains. It has three interchangeable conformations with a cryptic epitope at domain 1 within the molecule. Anti-β2GP1 antibodies against this cryptic epitope are referred to as 'type A' antibodies, and have been suggested to be more strongly associated with both vascular and obstetric complications. In contrast, 'type B' antibodies, directed against other domains of β2GP1, are more likely to be benign antibodies found in asymptomatic patients and healthy individuals. Although the interactions between anti-β2GP1 antibodies, β2GP1, and platelets have been investigated, the actual targeted metabolic pathway(s) and/or receptor(s) involved remain to be clearly elucidated. This review will discuss the current understanding of the interaction between anti-β2GP1 antibodies and β2GP1, with platelet receptors and associated signalling pathways.
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Affiliation(s)
- Yik C Ho
- School of Health Sciences, University of Tasmania, Locked Bag 1322, Launceston, Tasmania 7250, Australia.
| | - Kiran D K Ahuja
- School of Health Sciences, University of Tasmania, Locked Bag 1322, Launceston, Tasmania 7250, Australia.
| | - Heinrich Körner
- Menzies Institute for Medical Research, University of Tasmania, Private Bag 23, Hobart, Tasmania 7001, Australia.
| | - Murray J Adams
- School of Health Sciences, University of Tasmania, Locked Bag 1322, Launceston, Tasmania 7250, Australia.
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Zhang S, Wu Z, Li P, Bai Y, Zhang F, Li Y. Evaluation of the Clinical Performance of a Novel Chemiluminescent Immunoassay for Detection of Anticardiolipin and Anti-Beta2-Glycoprotein 1 Antibodies in the Diagnosis of Antiphospholipid Syndrome. Medicine (Baltimore) 2015; 94:e2059. [PMID: 26579816 PMCID: PMC4652825 DOI: 10.1097/md.0000000000002059] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Detection of antiphospholipid antibodies represents the first-line approach for diagnosis of antiphospholipid syndrome (APS). In this study, we evaluated the clinical performance of a novel chemiluminescence assay (CIA) in detection of IgG/IgM/IgA anti-cardiolipin (aCL) and IgG/IgM/IgA anti-β2 glycoprotein 1 (aβ2GP1) antibodies and to compare it with commercial enzyme-linked immunosorbent assay (ELISA) kits from the same manufacturer.A total of 227 sera were tested in this study, including 84 samples from patients with APS, 104 samples from patients with non-APS diseases as disease controls, and 39 healthy controls. Serum IgG/IgM/IgA aCL and IgG/IgM/IgA aβ2GP1 were determined by both ELISA (QUANTA Lite™ ELISA) and CIA (QUANTA Flash®assays).Significant quantitative correlations were identified between ELISA and CIA in IgG/IgM/IgA aCL and IgG/IgM/IgA aβ2GP1 autoantibodies detection (P < 0.001), with the rho value ranging from 0.51 to 0.87. In addition, ELISA and CIA demonstrated good qualitative agreements in IgG/IgM/IgA aCL and IgM/IgA aβ2GP1 autoantibodies determination with kappa coefficient ranged from 0.52 to 0.77. In contrast, ELISA and CIA showed a moderate qualitative agreement in IgG aβ2GP1 detection with a kappa value of 0.2. Notably, significantly higher IgG aβ2GP1 positive sera were detected by CIA, compared to those detected by ELISA in both primary APS (52.9% vs. 8.8%) and APS associated to other diseases sera (70.0% vs. 8.0%). For diagnosis of APS, IgG aβ2GP1 detection by CIA (IgG aβ2GP1 CIA) demonstrated the highest sensitivity (63.1%), followed by IgG aCL CIA (48.8%). More importantly, IgG aβ2GP1 CIA demonstrated the highest ability to predict the thrombotic events in patients with APS, with an OR of 3 (95% CI: 1.1-7.9).Our data suggest that this novel CIA assay had good performance in detecting aCL and aβ2GP1 antibodies, especially in the detection of IgG aβ2GP1 antibodies. Our findings could shed insight on the application of CIA in the laboratory diagnosis of APS in China.
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Affiliation(s)
- Shulan Zhang
- From the Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China (SZ, ZW, PL, YB, FZ, YL)
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