Abstracts tagged "antiphospholipid syndrome"

Abstract Number: 0948 • ACR Convergence 2021
Immunometabolism of Neutrophils in Antiphospholipid Syndrome (APS)
Ajay Tambralli¹, Alyssa Harbaugh², Shanea Estes², Srilakshmi Yalavarthi², Claire Hoy², Gautam Sule² and Jason Knight², ¹University of Michigan, Ypsilanti, MI, ²University of Michigan, Ann Arbor, MI
Background/Purpose: Neutrophil hyperactivity and neutrophil extracellular trap (NET) release (NETosis) appear to play roles in APS pathophysiology. Until recently, it was thought that neutrophils relied…
Abstract Number: 0069 • ACR Convergence 2021
First and Recurrent Thrombosis Risk After 3842 Patient-Years of Follow-Up: Prospective Results from AntiPhospholipid Syndrome Alliance for Clinical Trials and InternatiOnal Networking (APS ACTION) Clinical Database and Repository (
Yasaman Ahmadzadeh¹, Danieli Andrade², Maria Tektonidou³, Vittorio Pengo⁴, Savino Sciascia⁵, Amaia Ugarte⁶, H. Michael Belmont⁷, Maria Gerosa⁸, Paul R Fortin⁹, Maria Angeles Aguirre¹⁰, Lanlan Ji¹¹, Tatsuya Atsumi¹², Hannah Cohen¹³, Guilherme Ramires de Jesus¹⁴, D. Ware Branch¹⁵, Angela Tincani¹⁶, Nina Kello¹⁷, Michelle Petri¹⁸, Esther Rodriguez-Almaraz¹⁹, Roberto Ríos-Garcés²⁰, Yu Zuo²¹, Bahar Artim-Esen²², Rohan Willis²³, Maria Laura Bertolaccini²⁴, Robert Roubey²⁵, Doruk Erkan¹ and on Behalf of APS ACTION¹, ¹Hospital for Special Surgery, New York, NY, ²Hospital das Clinicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil, ³FORZAFORTE HELLAS LTD, Athens, Greece, ⁴Padova University Hospital, Padova, Italy, ⁵University of Turin, Turin, Italy, ⁶Hospital Universitario Cruces, Barakaldo, Spain, ⁷NYU School of Medicine, New York, NY, ⁸University of Milan, Milan, Italy, ⁹CHU de Quebec - Universite Laval, Québec City, QC, Canada, ¹⁰IMIBIC/Reina Sofia Hospital/University of Córdoba, Córdoba, Spain, ¹¹Peking University First Hospital, Beijing, China (People's Republic), ¹²Hokkaido University, Sapporo, Japan, ¹³Department of Haematology, University College London Hospitals NHS Foundation Trust, London, United Kingdom, ¹⁴Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil, ¹⁵University of Utah, Salt Lake City, UT, ¹⁶ASST Spedali Civili-University of Brescia, Gussago, Italy, ¹⁷Zucker School of Medicine at Hofstra/Northwell Health, Manhasset, NY, ¹⁸Johns Hopkins University School of Medicine, Baltimore, MD, ¹⁹Hospital Universitario 12 de Octubre, Madrid, Spain, ²⁰Hospital Clínic de Barcelona, Barcelona, Spain, ²¹University of Michigan, Ann Arbor, MI, ²²Istanbul University School of Medicine, İstanbul, Turkey, ²³University of Texas Medical Branch, Galveston, TX, ²⁴King's College London, London, United Kingdom, ²⁵University of North Carolina, Chapel Hill, NC
Background/Purpose: APS ACTION “Registry” was created to study the natural course of disease over 10 years in persistently antiphospholipid antibody (aPL)-positive patients with/without other systemic…
Abstract Number: 0949 • ACR Convergence 2021
Single-Cell RNA Sequencing of APS Skin Reveals Endothelial Pathology and Cellular Interactions
Hui Shi¹, Allison Billi², Rachael Wasikowski¹, Claire Hoy³, Kelsey Gockman¹, Lam Tsoi¹, Johann Gudjonsson², Pei-Suen Tsou¹ and Jason Knight¹, ¹University of Michigan, Ann Arbor, MI, ²Department of Dermatology, University of Michigan, Ann Arbor, MI, ³University of Michigan, Ann Arbor
Background/Purpose: Although antiphospholipid syndrome (APS) regularly presents with discrete thrombotic events, many patients will also acquire organ damage over time secondary to occlusive neointimal formation…
Abstract Number: 0070 • ACR Convergence 2021
Pregnancy Outcomes of Antiphospholipid Antibody Positive Patients: Prospective Results from AntiPhospholipid Syndrome Alliance for Clinical Trials and InternatiOnal Networking (APS ACTION) Clinical Database and Repository (“Registry”)
Zeynep Belce Erton¹, Ecem Sevim², Guilherme Ramires de Jesus³, Ricard Cervera⁴, Lanlan Ji⁵, Vittorio Pengo⁶, Amaia Ugarte⁷, Danieli Andrade⁸, Laura Andreoli⁹, Tatsuya Atsumi¹⁰, Paul R Fortin¹¹, Maria Gerosa¹², Yu Zuo¹³, Michelle Petri¹⁴, Savino Sciascia¹⁵, Maria Tektonidou¹⁶, Maria Angeles Aguirre¹⁷, D. Ware Branch¹⁸, Doruk Erkan¹ and on Behalf of APS ACTION¹, ¹Hospital for Special Surgery, New York, NY, ²Montefiore Medical Center - Wakefield Campus, Bronx, NY, ³Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil, ⁴Hospital Clinic Barcelona, Barcelona, Spain, ⁵Peking University First Hospital, Beijing, China (People's Republic), ⁶Padova University Hospital, Padova, Italy, ⁷Hospital Universitario Cruces, Barakaldo, Spain, ⁸Hospital das Clinicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil, ⁹University of Brescia, Brescia, Italy, ¹⁰Hokkaido University, Sapporo, Japan, ¹¹CHU de Quebec - Universite Laval, Québec City, QC, Canada, ¹²University of Milan, Milan, Italy, ¹³University of Michigan, Ann Arbor, MI, ¹⁴Johns Hopkins University School of Medicine, Baltimore, MD, ¹⁵University of Turin, Turin, Italy, ¹⁶FORZAFORTE HELLAS LTD, Athens, Greece, ¹⁷IMIBIC/Reina Sofia Hospital/University of Córdoba, Córdoba, Spain, ¹⁸University of Utah, Salt Lake City, UT
Background/Purpose: APS ACTION Registry was created to study the natural course of disease over 10 years in persistently antiphospholipid antibody (aPL) positive patients with or…
Abstract Number: 0950 • ACR Convergence 2021
Mammalian Target of Rapamycin (mTOR) Pathway Assessment in Antiphospholipid Antibody Positive Patients with Livedo Reticularis/Racemosa
Ecem Sevim¹, Salma Siddique², Madhavi Latha Chalasani³, Susan Chyou⁴, William Shipman³, Orla O`Shea⁵, Oral Alpan⁶, Stephane Zuily⁷, Joanna Harp⁸, Theresa Lu³ and Doruk Erkan³, ¹Montefiore Medical Center - Wakefield Campus, Bronx, NY, ²Nemours/A.I.duPont Hospital for Children, Wilmington, DE, ³Hospital for Special Surgery, New York, NY, ⁴Autoimmunity and Inflammation Program, Hospital for Special Surgery, New York, NY, ⁵Analytical Microscopy Core Laboratory, Hospital for Special Surgery, New York, NY, ⁶O&O Alpan Medical Center, Vienna, VA, ⁷Nancy Academic Hospital, Vandoeuvre-ls-Nancy, France, ⁸Dermatology, Weill Cornell Medicine, New York, NY
Background/Purpose: Endothelial proliferation is a key finding in antiphospholipid antibody (aPL)-positive patients with microvascular disease. The mTOR pathway plays a role in the endothelial proliferation…
Abstract Number: 0071 • ACR Convergence 2021
Damage Accrual Measured by DIAPS in Antiphospholipid Antibody (aPL)-positive Patients: Results from AntiPhospholipid Syndrome Alliance for Clinical Trials and InternatiOnal Networking (APS ACTION) Clinical Database and Repository (“Registry”)
Gustavo Balbi¹, Yasaman Ahmadzadeh², Maria Tektonidou³, Vittorio Pengo⁴, Savino Sciascia⁵, Amaia Ugarte⁶, H. Michael Belmont⁷, Maria Gerosa⁸, Paul R Fortin⁹, Chary lopez-pedrera¹⁰, Lanlan Ji¹¹, Tatsuya Atsumi¹², Hannah Cohen¹³, Guilherme Ramires de Jesus¹⁴, D. Ware Branch¹⁵, Cecilia Nalli¹⁶, Nina Kello¹⁷, Michelle Petri¹⁸, Esther Rodriguez-Almaraz¹⁹, Giuseppe Barilaro²⁰, Jason Knight²¹, Bahar Artim-Esen²², Rohan Willis²³, Maria Laura Bertolaccini²⁴, Robert Roubey²⁵, Doruk Erkan², Danieli De Andrade¹ and on Behalf of APS ACTION², ¹University of São Paulo, São Paulo, Brazil, ²Hospital for Special Surgery, New York, NY, ³FORZAFORTE HELLAS LTD, Athens, Greece, ⁴Padova University Hospital, Padova, Italy, ⁵University of Turin, Turin, Italy, ⁶Hospital Universitario Cruces, Barakaldo, Spain, ⁷NYU School of Medicine, New York, NY, ⁸University of Milan, Milan, Italy, ⁹CHU de Quebec - Universite Laval, Québec City, QC, Canada, ¹⁰IMIBIC/Reina Sofia Hospital/University of Córdoba, Córdoba, Spain, ¹¹Peking University First Hospital, Beijing, China (People's Republic), ¹²Hokkaido University, Sapporo, Japan, ¹³Department of Haematology, University College London Hospitals NHS Foundation Trust, London, United Kingdom, ¹⁴Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil, ¹⁵University of Utah, Salt Lake City, UT, ¹⁶ASST SPEDALI CIVILI DI BRESCIA, Brescia, Italy, ¹⁷Zucker School of Medicine at Hofstra/Northwell Health, Manhasset, NY, ¹⁸Johns Hopkins University School of Medicine, Baltimore, MD, ¹⁹Hospital Universitario 12 de Octubre, Madrid, Spain, ²⁰Clínic Barcelona - Hospital Universitari, Barcelona, Spain, ²¹University of Michigan, Ann Arbor, MI, ²²Istanbul University School of Medicine, İstanbul, Turkey, ²³University of Texas Medical Branch, Galveston, TX, ²⁴King's College London, London, United Kingdom, ²⁵University of North Carolina, Chapel Hill, NC
Background/Purpose: Damage Index in APS (DIAPS) is a scoring system developed to assess long-term damage in thrombotic primary antiphospholipid syndrome (PAPS), which also correlates with…
Abstract Number: 0951 • ACR Convergence 2021
Associations Among Antiphospholipid Antibody Types, Isotypes, and Titers: Results from the AntiPhospholipid Syndrome Alliance for Clinical Trials and InternatiOnal Networking (APS ACTION) Clinical Database and Repository (“Registry”)
Elena Gkrouzman¹, Danieli Andrade², Maria Tektonidou³, Vittorio Pengo⁴, Amaia Ugarte⁵, H. Michael Belmont⁶, Cecilia Chighizola⁷, Paul R Fortin⁸, Tatsuya Atsumi⁹, Maria Efthymiou,¹⁰, Guilherme Ramires de Jesus¹¹, D. Ware Branch¹², Laura Andreoli¹³, Michelle Petri¹⁴, Esther Rodriguez-Almaraz¹⁵, Ricard Cervera¹⁶, Jason Knight¹⁷, Emilio Gonzalez¹⁸, Elisa Bison¹⁹, Ian Mackie²⁰, Hannah Cohen²¹, Maria Laura Bertolaccini²², Doruk Erkan²³, Robert Roubey²⁴ and on behalf of APS ACTION²³, ¹University of Massachusetts, Shrewsbury, MA, ²Hospital das Clinicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil, ³FORZAFORTE HELLAS LTD, Athens, Greece, ⁴Padova University Hospital, Padova, Italy, ⁵Hospital Universitario Cruces, Barakaldo, Spain, ⁶NYU School of Medicine, New York, NY, ⁷University of Milan, Milan, Italy, ⁸CHU de Quebec - Universite Laval, Québec City, QC, Canada, ⁹Hokkaido University, Sapporo, Japan, ¹⁰Haemostasis Research Unit, Department of Haematology, University College London, London, United Kingdom, ¹¹Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil, ¹²University of Utah, Salt Lake City, UT, ¹³University of Brescia, Brescia, Italy, ¹⁴Johns Hopkins University School of Medicine, Baltimore, MD, ¹⁵Hospital Universitario 12 de Octubre, Madrid, Spain, ¹⁶Hospital Clinic Barcelona, Barcelona, Spain, ¹⁷University of Michigan, Ann Arbor, MI, ¹⁸University of Texas Medical Branch (utmb Health), Galveston, TX, ¹⁹University of Padova, Padova, Italy, ²⁰University College London, London, United Kingdom, ²¹Department of Haematology, University College London Hospitals NHS Foundation Trust, London, United Kingdom, ²²King's College London, London, United Kingdom, ²³Hospital for Special Surgery, New York, NY, ²⁴University of North Carolina, Chapel Hill, NC
Background/Purpose: Several antiphospholipid antibody (aPL) profiles are associated with a higher risk for the clinical manifestations of the antiphospholipid syndrome (APS). These include “triple positivity”…
Abstract Number: 0072 • ACR Convergence 2021
Immunosuppression Use in Primary Antiphospholipid Antibody Positive Patients: Descriptive Analysis of the AntiPhospholipid Syndrome Alliance for Clinical Trials and InternatiOnal Networking (APS ACTION) Clinical Database and Repository (“Registry”)
Zeynep Belce Erton¹, Rebecca Karp- Leaf², Danieli Andrade³, Maria Tektonidou⁴, Vittorio Pengo⁵, Savino Sciascia⁶, Amaia Ugarte⁷, H. Michael Belmont⁸, Maria Gerosa⁹, Paul R Fortin¹⁰, Chary lopez-pedrera¹¹, Lanlan Ji¹², Tatsuya Atsumi¹³, Hannah Cohen¹⁴, Guilherme Ramires de Jesus¹⁵, D. Ware Branch¹⁶, Cecilia Nalli¹⁷, Nina Kello¹⁸, Michelle Petri¹⁹, Esther Rodriguez-Almaraz²⁰, Ricard Cervera²¹, Jason Knight²², Bahar Artim-Esen²³, Rohan Willis²⁴, Maria Laura Bertolaccini²⁵, Robert Roubey²⁶, Doruk Erkan¹ and on Behalf of APS ACTION¹, ¹Hospital for Special Surgery, New York, NY, ²Massachusetts General Hospital, Boston, MA, ³Hospital das Clinicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil, ⁴FORZAFORTE HELLAS LTD, Athens, Greece, ⁵Padova University Hospital, Padova, Italy, ⁶University of Turin, Turin, Italy, ⁷Hospital Universitario Cruces, Barakaldo, Spain, ⁸NYU School of Medicine, New York, NY, ⁹University of Milan, Milan, Italy, ¹⁰CHU de Quebec - Universite Laval, Québec City, QC, Canada, ¹¹IMIBIC/Reina Sofia Hospital/University of Córdoba, Córdoba, Spain, ¹²Peking University First Hospital, Beijing, China (People's Republic), ¹³Hokkaido University, Sapporo, Japan, ¹⁴Department of Haematology, University College London Hospitals NHS Foundation Trust, London, United Kingdom, ¹⁵Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil, ¹⁶University of Utah, Salt Lake City, UT, ¹⁷ASST SPEDALI CIVILI DI BRESCIA, Brescia, Italy, ¹⁸Zucker School of Medicine at Hofstra/Northwell Health, Manhasset, NY, ¹⁹Johns Hopkins University School of Medicine, Baltimore, MD, ²⁰Hospital Universitario 12 de Octubre, Madrid, Spain, ²¹Hospital Clinic Barcelona, Barcelona, Spain, ²²University of Michigan, Ann Arbor, MI, ²³Istanbul University School of Medicine, İstanbul, Turkey, ²⁴University of Texas Medical Branch, Galveston, TX, ²⁵King's College London, London, United Kingdom, ²⁶University of North Carolina, Chapel Hill, NC
Background/Purpose: The APS ACTION Registry was created to study the natural course of antiphospholipid syndrome (APS) over 10 years in persistently antiphospholipid antibody (aPL) positive…
Abstract Number: 0962 • ACR Convergence 2021
Association of Antiphospholipid Antibodies with Thromboembolic Events and Severe Outcomes in COVID-19
Arielle Mendel¹, Marvin Fritzler², Yvan St.Pierre¹, Joyce Rauch³, Sasha Bernatsky³ and Evelyne Vinet⁴, ¹Research Institute of the McGill University Health Centre, Montréal, QC, Canada, ²University of Calgary, Calgary, AB, Canada, ³McGill University, Montréal, QC, Canada, ⁴McGill University Health Centre, Mont Royal, QC, Canada
Background/Purpose: Although several studies indicate that patients with COVID-19 produce antiphospholipid antibodies (aPL), it is unclear which aPL subtype predominates and whether aPL correlates with…
Abstract Number: 0073 • ACR Convergence 2021
Anti-Domain 1 Antibody Fluctuation over Time in Patients with Persistently Positive Antiphospholipid Antibodies: Results from the Aps Action Clinical Database and Repository (“Registry”)
Cecilia Chighizola¹, Francesca Pregnolato², Danieli De Andrade³, Maria Tektonidou⁴, Vittorio Pengo⁵, Amaia Ugarte⁶, H. Michael Belmont⁷, Paul R Fortin⁸, Tatsuya Atsumi⁹, Maria Efthymiou,¹⁰, Guilherme Ramires de Jesus¹¹, D. Ware Branch¹², Cecilia Nalli¹³, Michelle Petri¹⁴, Esther Rodriguez-Almaraz¹⁵, Ricard Cervera¹⁶, Yu Zuo¹⁷, Rohan Willis¹⁸, Elisa Bison¹⁹, Ian Mackie²⁰, Hannah Cohen²¹, Robert Roubey²², Doruk Erkan²³ and Maria Laura Bertolaccini²⁴, ¹University of Milan, Milan, Italy, ²Università degli Studi di Milano, Milan, Italy, ³University of São Paulo, São Paulo, Brazil, ⁴Rheumatology Unit, First Department of Propaedeutic Internal Medicine, Medical School, National and Kapodistrian University of Athens, Joint Rheumatology Program, Laiko Hospital, Athens, Greece, ⁵Padova University Hospital, Padova, Italy, ⁶Hospital Universitario Cruces, Barakaldo, Spain, ⁷NYU School of Medicine, New York, NY, ⁸CHU de Quebec - Universite Laval, Québec City, QC, Canada, ⁹Hokkaido University, Sapporo, Japan, ¹⁰Haemostasis Research Unit, Department of Haematology, University College London, London, United Kingdom, ¹¹Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil, ¹²University of Utah, Salt Lake City, UT, ¹³ASST SPEDALI CIVILI DI BRESCIA, Brescia, Italy, ¹⁴Johns Hopkins University School of Medicine, Baltimore, MD, ¹⁵Hospital Universitario 12 de Octubre, Madrid, Spain, ¹⁶Hospital Clinic Barcelona, Barcelona, Spain, ¹⁷University of Michigan, Ann Arbor, MI, ¹⁸University of Texas Medical Branch, Galveston, TX, ¹⁹University of Padova, Padova, Italy, ²⁰University College London, London, United Kingdom, ²¹Department of Haematology, University College London Hospitals NHS Foundation Trust, London, United Kingdom, ²²UNC, Chapel Hill, NC, ²³Hospital for Special Surgery, New York, NY, ²⁴King's College London, London, United Kingdom
Background/Purpose: Data on fluctuation of antibodies against domain 1 (anti-D1) of β2-glycoprotein I (β2GPI) are scarce. Patients with antiphospholipid syndrome (APS) and all three criteria…
Abstract Number: 1285 • ACR Convergence 2021
Major Determinants of Prolonged Remission in Systemic Lupus Erythematosus: Retrospective Study over a 41-Year Period
Goncalo Durao-Carvalho¹, Raquel Fernandez², Bethan Goulden³, Filipa Farinha⁴ and David Isenberg⁵, ¹Servico de Medicina Interna, Centro Hospitalar do Oeste – Unidade de Caldas da Rainha, Caldas da Rainha, Portugal, Caldas da Rainha, Portugal, ²Servicio de Medicina Interna, Hospital Universitario de Ourense, Ourense, Spain, ³Department of Rheumatology, University College London Hospitals, London, United Kingdom, ⁴Department of Rheumatology, University College London Hospitals and Centre for Rheumatology, University College London, London, United Kingdom, ⁵Centre for Rheumatology, University College London, London, United Kingdom
Background/Purpose: Disease activity is a major determinant of mortality whereas prolonged remission contributes to improving health outcomes in SLE patients (pts). Remission is thus a…
Abstract Number: 0074 • ACR Convergence 2021
Association of Anti-phospholipid Antibodies (aPL) with Poor Clinical Outcomes in Hospitalized Patients with COVID-19
David Yaich¹, Brandon Ptak¹, Emma Roellke¹, Erin Miller¹, Juliet Kim¹, Juan Gaztanaga¹, Wendy Drewes¹, James Ciancarelli², Jasmin Divers¹, Megan Winner¹, Amy Rapkiewicz¹ and Steven Carsons³, ¹NYU Langone Hospital - Long Island, Mineola, NY, ²NYU Hospital Hospital- Long Island, Mineola, NY, ³NYU Long Island School of Medicine, Mineola, NY
Background/Purpose: Critically ill patients with COVID-19 infection have a profound hypercoagulable state and can often develop thromboses in many different vascular beds. Given the presence…
Abstract Number: 1501 • ACR Convergence 2021
Molecular Modelling Predicts Inhibition of Functional Effects of Anti-thrombin III on Factor Xa Mediated Complement Activation by Anti- Factor Xa IgG in SLE and APS
Thomas McDonnell¹, Raj Amarnani², Valentina Spiteri², Carina Spicer³, Charis Pericleous⁴, Bahar Artim-Esen⁵, Ian Mackie¹, Marina Botto⁴, Anisur Rahman¹ and Ian Giles¹, ¹University College London, London, United Kingdom, ²University College London, London, ³Merck, Philadelphia, PA, ⁴Imperial College London, London, United Kingdom, ⁵Istanbul University School of Medicine, İstanbul, Turkey
Background/Purpose: The significance of antibodies directed against activated Factor (FXa) and thrombin (Thr) found in ~40% of patients with Systemic Lupus Erythematosus (SLE) and/or Antiphospholipid…
Abstract Number: 0075 • ACR Convergence 2021
Endothelial Cell-activating Antibodies in COVID-19
Hui Shi¹, Yu Zuo², Sherwin Navaz², Alyssa Harbaugh², Claire Hoy², Alex Gandhi², Gautam Sule², Srilakshmi Yalavarthi², Kelsey Gockman², Jacqueline Madison², Jintao Wang², Melanie zuo², Yue Shi³, Michael Maile², Yogendra Kanthi² and Jason Knight², ¹Division of Rheumatology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, ²University of Michigan, Ann Arbor, MI, ³Shanghai Sports School, Shanghai, China (People's Republic)
Background/Purpose: Patients with COVID-19 are at high risk for occlusion of vascular beds of all sizes. Considering endothelial cell activation has regularly been described as…
Abstract Number: 0076 • ACR Convergence 2021
Predicting the Transitions Between Lupus Anticoagulant Status and Thrombosis in SLE Using a Multi-state Markov Model
Selcan Demir¹, Jessica Li², Laurence Magder³ and Michelle Petri⁴, ¹Hacettepe University Faculty of Medicine, Ankara, Turkey, ²Johns Hopkins University, Baltimore, MD, ³University of Maryland, Baltimore, Baltimore, MD, ⁴Johns Hopkins University School of Medicine, Baltimore, MD
Background/Purpose: Antiphospholipid syndrome (APS) is a significant cause of morbidity and mortality in patients with SLE and lupus anticoagulant (LAC) positivity is the best predictor…

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