PB0289 Association of Elevated Coagulation Factors VIII, IX and XI with Recurrent Thrombotic Events in Children with Non-Central Venous Line Deep Vein Thrombosis

ISTH Academy, Faculty / Presenters, 407230

PB0290 Bleeding Complications in Children with Myeloproliferative Neoplasms and Thrombosis on Anticoagulation

ISTH Academy, Faculty / Presenters, 407231

PB0291 Clinical Manifestations, Treatment and Outcomes of Pediatric Portal Vein Thrombosis

ISTH Academy, Faculty / Presenters, 407232

PB0292 Thrombotic Risk Evaluation in Pediatric Patients with Acute Lymphoblastic Leukemia Using Thrombin Generation Test

ISTH Academy, Faculty / Presenters, 407233

PB0287 Thromboembolic and Hemorrhagic Events in Pediatric Patients Assisted with Mechanical Circulatory Support and Bivalirudin Anticoagulation: A Retrospective Observational Study

ISTH Academy, Faculty / Presenters, 407234

PB0281 Establishment of a National Patient-Based Pediatric Thrombosis Registry by Iranian Society of Thrombosis and Hemostasis

ISTH Academy, Faculty / Presenters, 407235

PB0286 Population Pharmacokinetics and Pharmacodynamics of Bivalirudin in Children on Ventricular Assist Device Support

ISTH Academy, Faculty / Presenters, 407236

PB0282 Evaluation of Plasma Coagulative and Fibrinolytic Function in Critically Ill Children with COVID-19 or MIS-C An Analysis of the COVAC-TP Trial

ISTH Academy, Faculty / Presenters, 407237

PB0283 Impact of An Institutional Anticoagulant Thromboprophylaxis Protocol in Hospitalized Pediatric Patients with Inflammatory Bowel Disease at High Risk for Venous Thromboembolism

ISTH Academy, Faculty / Presenters, 407238

PB0284 Resolution Rates of Provoked Venous Thrombus Embolism in Pediatric Patients Managed at a Tertiary Care Center

ISTH Academy, Faculty / Presenters, 407239

PB0285 Use of Systemic Thrombolysis in Pediatric Cardiac-Related Thrombosis; A Retrospective Cohort Study

ISTH Academy, Faculty / Presenters, 407240

PB0279 Intermediate- and High-Risk Pulmonary Embolism in Pediatric Tertiary Care Centers in the Netherlands. Is there a need for a Pediatric PERT?

ISTH Academy, Faculty / Presenters, 407241

PB0277 Outcomes of Cerebrosinovenous Thrombosis in Infants and Children

ISTH Academy, Faculty / Presenters, 407242

PB0278 Pediatric Renal Tumors: Clinical Outcomes in Patients with and without Tumor-Related Thrombus

ISTH Academy, Faculty / Presenters, 407243

PB1355 Long Vaccine-Induced Immune Thrombotic Thrombocytopenia: A Case Report

ISTH Academy, Faculty / Presenters, 407244

PB1352 A Survey on Anticoagulation in Patient with ITP

ISTH Academy, Faculty / Presenters, 407245

PB1349 Clinical Relevance and Management of Bleeding in Patients with Myelodysplastic Syndromes and Severe Thrombotytopenia: A Retrospective Analysis

ISTH Academy, Faculty / Presenters, 407246

PB1351 High-Doses of Dexamethasone as an Alternative to Other Steroidal Use in Primary Immune Thrombocytopenia Cases: A Research Study in a Salvadoran Population

ISTH Academy, Faculty / Presenters, 407247

PB1346 A New Canine Thrombopoietin Assay Reveals Common Pathogenesis of Canine and Human Immune Thrombocytopenia

ISTH Academy, Faculty / Presenters, 407248

PB1347 Evaluating Local Practice Patterns and IVIg Use to Treat Immune Thrombocytopenia

ISTH Academy, Faculty / Presenters, 407249

PB1348 Thrombopoietin Receptor Agonist and Rituximab Combination Therapy in Patients with Refractory Primary Immune Thrombocytopenia. A Single-Center Study

ISTH Academy, Faculty / Presenters, 407250

PB1345 Health-Related Quality of Life Assessed by the SF-36 Health Survey in the Vienna ITP Biobank

ISTH Academy, Faculty / Presenters, 407251

PB1342 Clinical Significance of Anti-Nuclear Antibody Positivity in Immune Thrombocytopenia Purpura in Adults

ISTH Academy, Faculty / Presenters, 407252

PB1344 Impact of Spleen Tyrosine Kinase Inhibition on Vaccine-Induced Thrombotic Thrombocytopenia Antibody-Induced Procoagulant Platelet and Thrombus Formation

ISTH Academy, Faculty / Presenters, 407253

PB1341 Obinutuzumab-Induced Thrombocytopenia: An Under-Recognized Immunotherapy Related Thrombocytopenia

ISTH Academy, Faculty / Presenters, 407254

PB1336 Novel Insight into Platelet Refractoriness: Desialylation, Apoptosis and Treatment

ISTH Academy, Faculty / Presenters, 407255

PB1338 Thrombotic Thrombocytopenia Syndrome after vaccination against COVID-19 Associated with Antiplatelet Antibodies

ISTH Academy, Faculty / Presenters, 407256

PB1332 Heightened Thrombosis in Immune Thrombocytopenia: Insights into the Risk Factors and Clinical Outcomes from an Australian Hospital Cohort

ISTH Academy, Faculty / Presenters, 407257

PB1334 Safety Profile of Efgartigimod from Clinical Trials in Participants with Immunoglobulin G-Mediated Autoimmune Diseases

ISTH Academy, Faculty / Presenters, 407258

PB0337 Occult Cervical Cancer-Induced Refractory Thrombotic Thrombocytopenic Purpura in a Renal Transplant Patient with Low- level Cytomegalovirus Viremia: A Case Report

ISTH Academy, Faculty / Presenters, 407259

PB0336 Refractory Thrombotic Thrombocytopenic Purpura Treated by Discontinuation of Therapeutic Plasma Exchange

ISTH Academy, Faculty / Presenters, 407260

PB0334 Immune-Mediated Thrombotic Thrombocytopenic Purpura Landscaping in Gulf Countries: A Real-World Evidence Study (ATHENA Study)

ISTH Academy, Faculty / Presenters, 407261

PB0335 Medical Education in Congenital Thrombotic Thrombocytopenic Purpura Significantly Improves Competence in Making Appropriate Management Choices

ISTH Academy, Faculty / Presenters, 407262

PB0332 Hereditary Thrombotic Thrombocytopenic Purpura: A Survey of Canadian Treaters

ISTH Academy, Faculty / Presenters, 407263

PB0333 Therapeutic Plasma Exchange-Related Complications in Patients with Immune-Mediated Thrombotic Thrombocytopenic Purpura

ISTH Academy, Faculty / Presenters, 407264

PB0330 Relevance of ADAMTS13 Antigenic Levels in the Characterization of Pathological Mechanisms Associated with Immune-Mediated Thrombotic Thrombocytopenic Purpura (iTTP)

ISTH Academy, Faculty / Presenters, 407265

PB0327 Modulating ADAMTS13 Activity Using Organic Solvents

ISTH Academy, Faculty / Presenters, 407266

PB0328 Outcomes of Immune-Mediated Thrombotic Thrombocytopenic Purpura at a Single Center in Japan

ISTH Academy, Faculty / Presenters, 407267

PB0324 Burden of Symptoms and Healthcare Resource Utilization (HCRU) and Costs in U.S. Patients with Thrombotic Thrombocytopenic Purpura (TTP)

ISTH Academy, Faculty / Presenters, 407268

PB0325 How Rare is Rare? The First Epidemiological Study of Thrombotic Thrombocytopenic Purpura (TTP) in a Large Canadian City

ISTH Academy, Faculty / Presenters, 407269

PB0326 Incidence of Thrombotic Thrombocytopenic Purpura and Other Suspected Thrombotic Microangiopathies during the COVID-19 Pandemic Period 2020-2021 in Quebec

ISTH Academy, Faculty / Presenters, 407270

PB0322 Burden of Illness Associated with Congenital Thrombotic Thrombocytopenic Purpura: A Systematic Review

ISTH Academy, Faculty / Presenters, 407271

PB0323 Preliminary Analysis of ATHN 16: Real-World Safety of Eptacog Beta

ISTH Academy, Faculty / Presenters, 407272

PB0321 Prospective Evaluation of the HemosIL AcuStar ADAMTS13 Activity Assay

ISTH Academy, Faculty / Presenters, 407273

PB0318 Evaluation of a Novel ADAMTS13 Activity Reagent Using Fully Automated Analyzer

ISTH Academy, Faculty / Presenters, 407274

PB0319 Overexpression of ANKRD26 Results in Thrombocytopenia That May Exacerbate Clinical Phenotypes of Thrombotic Thrombocytopenic Purpura

ISTH Academy, Faculty / Presenters, 407275

PB0320 Understanding the Contribution of Single Synonymous Variants to ADAMTS13 Functionality

ISTH Academy, Faculty / Presenters, 407276

PB0316 Bortezomib for the Treatment of Multi-Refractory Immune-Mediated Thrombotic Thrombocytopenic Purpura: An Italian Multicenter Survey

ISTH Academy, Faculty / Presenters, 407277

PB0315 Characterizing Protease-Resistant ADAMTS13 Mutants

ISTH Academy, Faculty / Presenters, 407278

PB0317 Novel Luminescent-Based ADAMTS13 Activity Assay

ISTH Academy, Faculty / Presenters, 407279

PB0314 Treatment Delay and Outcomes in Elderly TTP Patients: A Nationwide Analysis

ISTH Academy, Faculty / Presenters, 407280

PB0312 Assessment of Post-Treatment Anti-Drug Antibodies to Caplacizumab in Patients with Immune-Mediated Thrombotic Thrombocytopenic Purpura

ISTH Academy, Faculty / Presenters, 407281

PB0313 Towards the Standardisation of ADAMTS-13 Antibody Testing in Thrombotic Thrombocytopenic Purpura (TTP)-Results of the IMATAS Collaborative Study

ISTH Academy, Faculty / Presenters, 407282

PB0338 The Ideal Acetylsalicylic Acid (ASA) Dose to Combine with P2Y12 Inhibitors: A Volunteer Study

ISTH Academy, Faculty / Presenters, 407283

PB0354 Use of Intraoperative Heparin in Combination with Cangrelor in Patients with Acute Heparin-Induced Thrombocytopenia Undergoing Cardiopulmonary Bypass for Heart Transplantation: A Case Series

ISTH Academy, Faculty / Presenters, 407284

PB0353 Flow Cytometry Detection of Procoagulant Platelets: A Diagnostic Test for Heparin Induced Thrombocytopenia

ISTH Academy, Faculty / Presenters, 407285

PB0352 Non-Pathogenic Anti-PF4 Antibodies after SARS-CoV-2 Vaccines: Long Term Follow-Up

ISTH Academy, Faculty / Presenters, 407286

PB0351 Complement Activating Properties of Heparin Induced Thrombocytopenia (HIT) Antibodies as Surrogate Markers for Functional Assays

ISTH Academy, Faculty / Presenters, 407287

PB0349 Anti-PF4-Antibodies in Patients Suspected of Vaccine-Induced Immune Thrombotic Thrombocytopenia After SARS-CoV-2 Vaccination

ISTH Academy, Faculty / Presenters, 407288

PB0350 Prospective Study to Evaluate the Consolidated Performance of Two Automated Rapid Assays for the Diagnosis of Heparin-Induced Thrombocytopenia

ISTH Academy, Faculty / Presenters, 407289

PB0348 Can 5B9, a Monoclonal Antibody to PF4/H, be Useful in Improving the Performance of the Asserachrom HPIA Test for the Diagnosis of HIT?

ISTH Academy, Faculty / Presenters, 407290

PB0347 Argatroban or Bivalirudin for Suspected or Confirmed Heparin Induced Thrombocytopenia at a Large Academic Medical Center

ISTH Academy, Faculty / Presenters, 407291

PB0346 Monoclonal Gammopathy of Thrombotic/Thrombocytopenic Significance

ISTH Academy, Faculty / Presenters, 407292

PB0345 Diagnosing Heparin-Induced Thrombocytopenia: A Prospective Multicentre Study

ISTH Academy, Faculty / Presenters, 407293

PB0343 Longitudinal Study on the Persistence of Anti-Platelet Factor 4 Antibodies in Vaccine-Induced Immune Thrombotic Thrombocytopenia after 14 Months

ISTH Academy, Faculty / Presenters, 407294

PB0344 The Impact of Spleen Tyrosine Kinase-Inhibition on 5B9 HIT Antibody-Induced Procoagulant Platelet Formation

ISTH Academy, Faculty / Presenters, 407295

PB0342 Platelet Phosphatidylserine is the Critical Mediator of Thrombosis in Heparin-Induced Thrombocytopenia

ISTH Academy, Faculty / Presenters, 407296

PB0805 Comparison of Three ELISA Assays for the Detection and Quantification of Autoantibodies against Complement Factor H

ISTH Academy, Faculty / Presenters, 407297

PB0804 Eculizumab Use in the Postpartum Period for the Treatment of Pregnancy Associated Atypical Hemolytic Uremic Syndrome: Retrospective Cohort Study

ISTH Academy, Faculty / Presenters, 407298

PB0358 Hereditary Bleeding Disorders Web-Based Registry of Patients with Inherited Platelet Disorders

ISTH Academy, Faculty / Presenters, 407299

PB0357 Hereditary Thrombocytopenia with Platelet Sialic Acid Deficiency and Mutations in the GNE Genes

ISTH Academy, Faculty / Presenters, 407300

PB0356 Results of Local Implementation of Next Generation Sequencing (NGS) for Diagnosis of Inherited Thrombocytopenias (IT) in Argentina

ISTH Academy, Faculty / Presenters, 407301

PB0355 Knock-in of Homozygous NBEAL2 Variants to Model Gray Platelet Syndrome in Megakaryocytes Derived from CRISPR-Cas9-edited Pluripotent Stem Cells

ISTH Academy, Faculty / Presenters, 407302

PB0363 A Case Report of Quinine-Induced Thrombotic Microangiopathy Treated with Eculizumab

ISTH Academy, Faculty / Presenters, 407303

PB0362 Atypical Hemolytic Uremic Syndrome after SARS-CoV2 Infection with C3 p.I1157 T Mutation

ISTH Academy, Faculty / Presenters, 407304

PB0367 Heavy Menstrual Bleeding in Paediatric Patient due to Resistant Chronic Immune Thrombocytopenia Successfully Treated with Eltrombopag and Tranexemic Acid - a Case Report Form Bosnia and Herzegovina

ISTH Academy, Faculty / Presenters, 407305

PB0366 Ticagrelor Overdose Managed without Adverse Outcomes: Is Reversal Agent Necessary?

ISTH Academy, Faculty / Presenters, 407306

PB0365 A Novel and Potent Collagen Antagonist, Niclosamide in Human Platelets: In Vitro and In Vivo Studies

ISTH Academy, Faculty / Presenters, 407307

PB0364 Glycoprotein VI-Targeted Antiplatelet Therapy with Glenzocimab is Safe in Patients Exposed to Current Antithrombotic and Fibrinolytic Drugs

ISTH Academy, Faculty / Presenters, 407308

PB1371 Platelet Activation with the Aeson Bioprosthetic Total Artificial Heart: Insight from Aspirin Treatment and Outcomes

ISTH Academy, Faculty / Presenters, 407309

PB1368 Platelet Subpopulations in Decompensated Cirrhotic Children

ISTH Academy, Faculty / Presenters, 407310

PB1369 Relevance of the Absence of Integrin αIIb Expression by Flow Cytometry in Acquired Glanzmann's Thrombasthenia

ISTH Academy, Faculty / Presenters, 407311

PB1370 Thrombocytosis and Acquired Bleeding Disorders in Patients with Myeloproliferative Neoplasms

ISTH Academy, Faculty / Presenters, 407312

PB1366 Characteristics of Platelets in Elderly Patients with Immune Thrombocytopenia

ISTH Academy, Faculty / Presenters, 407313

PB1367 Pilot Study of microRNA (mir148a) Identification as a Biomarker for Early Diagnosis and Treatment of Heparin Induced Thrombocytopenia (HIT)

ISTH Academy, Faculty / Presenters, 407314

PB1365 Serum Complement Levels in Adult Patients with Primary Immune Thrombocytopenia

ISTH Academy, Faculty / Presenters, 407315

PB1362 Fibrinogen Contribution to Clot Strength in Septic Patients with Hematologic Malignancies and Thrombocytopenia

ISTH Academy, Faculty / Presenters, 407316

PB1364 Study to Explore the Mechanisms of Platelet Function Abnormalities in Patients with Acquired Platelet Dysfunction with Eosinophilia (APDE) Utilising Flow Cytometry-Based Platelet Function Tests

ISTH Academy, Faculty / Presenters, 407317

PB1359 Fc Modified KKO Blocks Thrombosis in Heparin-Induced Thrombocytopenia (HIT), But not in Vaccine-Induced Immune Thrombotic Thrombocytopenia (VITT)

ISTH Academy, Faculty / Presenters, 407318

PB1360 High Annualized Bleeding Rates in Pediatric Patients with Mild Inherited Platelet Function Defects (IPFD)

ISTH Academy, Faculty / Presenters, 407319

PB1357 Addition of Platelet Factor 4 in the Heparin-Induced Platelet Activation (HIPA) Test for the Diagnosis of Heparin Induced Thrombocytopenia (HIT): Results from a Restrospective Monocentric Study

ISTH Academy, Faculty / Presenters, 407320

PB1358 Platelet Function Testing in Patients with Liver Cirrhosis and TIPS Implantation

ISTH Academy, Faculty / Presenters, 407321

PB1356 Intrinsic Platelet Dysfunction in Patients with Acute Intracerebral Hemorrhage

ISTH Academy, Faculty / Presenters, 407322

PB1396 Successful Hip Replacements in a Glanzmann Thrombasthenia Patient with Anti-Platelet Antibodies and Platelet- Refractory Disease Using rFVIIa: A Case Report

ISTH Academy, Faculty / Presenters, 407323

PB1395 Successful Management of Multiple Tooth Extraction in a Patient with Glanzmann Thrombasthenia with Platelet Antibodies

ISTH Academy, Faculty / Presenters, 407324

PB1392 Late Diagnosis of Two Adult Siblings with Bernard Soulier Syndrome (BSS)

ISTH Academy, Faculty / Presenters, 407325

PB1393 Living with Glanzmann's Thrombasthenia: An Interim Report on 14 Qualitative Interviews from the Glanzmann's 360 Study

ISTH Academy, Faculty / Presenters, 407326

PB1390 Gray Platelet Syndrome- Novel NBEAL2 Pathogenic Variants and Hemostasis Evaluation by Global Coagulation Assays

ISTH Academy, Faculty / Presenters, 407327

PB1391 Inherited δ- Granule Defect as a Novel Mutation Co-Existing with Factor VII Deficiency - Hermansky Pudlak Syndrome (HPS) Type 2

ISTH Academy, Faculty / Presenters, 407328

PB1385 Developing a Stem Cell-Based Model for Glanzmann Thrombasthenia to Explore VWF-GPIb Axis during Megakaryopoeisis

ISTH Academy, Faculty / Presenters, 407329