Abstract Number: 105 • 2020 Pediatric Rheumatology Symposium

Discovering the Implications of Adiposity in Juvenile Dermatomyositis

Vy Do¹, Chanhee Jo ², Jaclyn Albin ¹, Tracey Wright ¹, Julie Fuller ³ and Una Makris ¹, ¹UT Southwestern Medical Center, Dallas, ²Texas Scottish Rite Hospital, Dallas, ³UT Southwestern Medical Center, Frisco

Abstract Number: 106 • 2020 Pediatric Rheumatology Symposium

Childhood-onset Takayasu Arteritis: A Single Center Case Series of Atypical and Varied Presentations

Uptej Khalsa¹ and Imelda Balboni ¹, ¹Stanford University, Palo Alto, California

Abstract Number: 107 • 2020 Pediatric Rheumatology Symposium

Defining the Prevalence of Depression and Anxiety Symptoms in Adolescents with Juvenile Idiopathic Arthritis

Lydia Li¹, Mehveen Merchant ², Shelina Gordon ³, David Lovas ⁴, Joanne Gillespie ⁴, Adam Huber ⁵, Bianca Lang ⁶, Suzanne Ramsey ⁴ and Elizabeth Stringer ⁴, ¹Dalhousie University, Halifax, Canada, ²Calgary, Canada, ³IWK Health Centre, Halifax, ⁴IWK Health Centre, Halifax, Canada, ⁵IWK Health Centre & Dalhousie University, Halifax, Nova Scotia, Canada, ⁶Dalhousie University - Halifax, Halifax, Canada

Abstract Number: 108 • 2020 Pediatric Rheumatology Symposium

A Multinational Study of Thrombotic Microangiopathy in Macrophage Activation Syndrome: A Dreadful Condition Which Is Likely Underrecognized

Francesca Minoia¹, Jessica Tibaldi ², Valentina Muratore ³, Romina Gallizzi ⁴, Claudia Bracaglia ⁵, Alessia Arduini ⁶, Elif Comak ⁷, Olga Vougiouka ⁸, Ralf Trauzeddel ⁹, Giovanni Filocamo ¹⁰, Concetta Micalizzi ², Ozgur Kasapcopur ¹¹, Erbil Unsal ¹², Toshiyuki Kitoh ¹³, Elena Tsitsamis ¹⁴, Mikhail Kostik ¹⁵, Randy Cron ¹⁶, Jana Pachlopnik ¹⁷, Despoina Maritsi ¹⁸, Marija Jelusic ¹⁹, Susan Shenoi ²⁰ and Angelo Ravelli ², ¹Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milano, Italy, ²Istituto Giannina Gaslini, Genoa, Italy, ³IRCCS Policlinico San Matteo, Pavia, Italy, ⁴Università degli Studi di Messina, Messina, Italy, ⁵Division of Rheumatology, IRCCS Ospedale Pediatrico Bambino Gesu', Rome, Italy, ⁶IRCCS Ospedale Pediatrico Bambino Gesù, Rome, Italy, ⁷Akdeniz University, Antalya, Turkey, ⁸Second Department of Paediatrics, P. & A. Kyriakou Children’s Hospital, Athens, Greece, ⁹Helios Klinikum, Berlin, Germany, ¹⁰Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy, ¹¹Istanbul University-Cerrahpasa, Cerrahpasa Medical School, Cerrahpasa, Turkey, ¹²Dokuz Eylul University, Izmir, Turkey, ¹³Aichi Medical University, Nagakute, Japan, ¹⁴Children's Hospital Aghia Sophia, Athens, Greece, ¹⁵State Pediatric Medical Academy, Saint Petersburg, Russia, ¹⁶University of Alabama at Birmingham, Birmingham, ¹⁷Universitats-Kinderspital, Zurich, Switzerland, ¹⁸National and Kopdistrian University of Athens, Athens, Greece, ¹⁹Division of Paediatric Rheumatology and Immunology, University of Zagreb, Zagreb, Croatia, ²⁰Seattle Children's Hospital, Seattle

Abstract Number: 109 • 2020 Pediatric Rheumatology Symposium

Incidence, Contributing Factors, and Impact of Diagnostic Delay in Juvenile Idiopathic Arthritis: Analysis of the Childhood Arthritis and Rheumatology Research Alliance (CARRA) Registry

Mei-Sing Ong¹, Gordon Schiff ² and Marc Natter ³ for the CARRA investigators, ¹Harvard Medical School & Harvard Pilgrim Healthcare Institute, Boston, ²Harvard Medical School, Boston, ³Boston Children's Hospital, Boston

Abstract Number: 110 • 2020 Pediatric Rheumatology Symposium

Consequences and Predictors of Persisting Pain in Children with Juvenile Idiopathic Arthritis: A Case Control Study Nested in the ReACCh-Out Cohort

Tara McGrath¹, Jaime Guzman ², Lori Tucker ³, Natalie Shiff ⁴, Maryna Yaskina ⁵, Susan Tupper ⁶ and Dax Rumsey ⁷, ¹University of British Columbia, Vancouver, Canada, ²University of British Columbia and BC Children's Hospital, Vancouver, Canada, ³BC Children's Hospital, Vancouver, British Columbia, Canada, ⁴Florida, Gainesville, ⁵Women and Children's Research Institute, Edmonton, Canada, ⁶Saskatoon, Canada, ⁷University of Alberta, Edmonton, Canada

Abstract Number: 111 • 2020 Pediatric Rheumatology Symposium

WITHDRAWN

Abstract Number: 112 • 2020 Pediatric Rheumatology Symposium

WITHDRAWN

Abstract Number: 113 • 2020 Pediatric Rheumatology Symposium

Evaluation of B-cell Depletion with Rituximab and IVIG Concurrent Treatment in Pediatric Autoimmune Brain Disease

Alexis Wilsey¹, Heather Van Mater ² and Laura Cannon ², ¹Durham, ²Duke University, Durham

Abstract Number: 114 • 2020 Pediatric Rheumatology Symposium

Musculoskeletal Ultrasound Study in Childhood Arthritis: A Limited Examination

Patricia Vega-Fernandez¹, Tracy Ting ¹, Edward Oberle ², Janet Figueroa ³, Courtney McCracken ⁴ and Johannes Roth ⁵, ¹Cincinnati Children's Hospital Medical Center, Cincinnati, ²Division of Rheumatology, Nationwide Children's Hospital, Columbus, ³Emory University, Atlanta, ⁴Emory University School of Medicine, Atlanta, ⁵Division of Pediatric Rheumatology, Children Hospital of Eastern Ontario, Department of Pediatrics, University of Ottawa, Ottawa, Ontario, Canada

Abstract Number: 115 • 2020 Pediatric Rheumatology Symposium

Carbohydrate and Sugar Intake Predict Pain in Teens with Active JIA Disease but Not in Teens in Remission or Controls: A Cross-Sectional, Case-Control Metabolomics Pilot Study

Kimberly Lewis¹, Nico Osier ², Patricia Carter ³, Christina Nguyen ⁴, Ruy Carrasco ⁵, Shelby Brooks ², Alexandra Garcia ⁶ and Stefano Tiziani ⁵, ¹The University of Texas at Austin, Austin, Texas, ²The University of Texas at Austin, Austin, ³University of Alabama, Tuscalossa, ⁴Ascension Seton Nursing Research, Austin, ⁵The University of Texas at Austin, Dell Medical School, Austin, ⁶The University of Texas at Austin, Dell Medical School, School of Nursing, Austin

Abstract Number: 116 • 2020 Pediatric Rheumatology Symposium

Patterns of Etanercept Use in the Childhood Arthritis and Rheumatology Research Alliance Juvenile Idiopathic Arthritis Registry

Natalie Shiff¹, Aimee Lougee ², Roland Matsouaka ², David Collier ³, Yukiko Kimura ⁴, Dax Rumsey ⁵, Jennifer Schenfeld ⁶, Scott Stryker ⁷, Marinka Twilt ⁸ and Timothy Beukelman ⁹, ¹Florida, Gainesville, ²Duke University, Durham, ³Amgen, Thousand Oaks, ⁴Hackensack Meridian School of Medicine, Hackensack, ⁵University of Alberta, Edmonton, Canada, ⁶Amgen, Long Beach, ⁷Amgen, Inc, San Francisco, ⁸Alberta Children's Hospital, Calgary, Canada, ⁹University of Alabama at Birmingham, Birmingham

Abstract Number: 117 • 2020 Pediatric Rheumatology Symposium

Family Impact of Juvenile Localized Scleroderma

Katia Milovanova¹, Vimal Prajapati ², Merna Adly ², Rebeka Stevenson ³, Brendan Lethebe ² and Nadia Luca ², ¹University of Alberta, Edmonton, Alberta, Canada, ²University of Calgary, Calgary, Alberta, Canada, ³Cochrane, Alberta, Canada

Abstract Number: 118 • 2020 Pediatric Rheumatology Symposium

Long-Term Outcomes in Children Born to Anti-Ro and/or anti-La Positive Mothers

Talia Diaz¹, Daniela Dominguez ², Andrea Knight ³, Carl A. Laskin ⁴, Lawrence Ng ², Franklin Silverio ², Earl D. Silverman ⁵ and Linda Hiraki ⁶, ¹Division of Rheumatology, The Hospital for Sick Children, Toronto, Ontario, Canada, ²Division of Rheumatology, The Hospital for Sick Children, Toronto, Canada, ³SickKids Research Institute, Toronto, Canada, ⁴Mount Sinai Hospital and University of Toronto, Toronto, Canada, ⁵Division of Rheumatology, The Hospital for Sick Children, Department of Paediatrics, University of Toronto, Translational Medicine, Research Institute, The Hospital for Sick Children, Toronto, Canada, ⁶Division of Rheumatology, The Hospital for Sick Children, Department of Paediatrics, University of Toronto, Child Health Evaluative Sciences, Research Institute, The Hospital for Sick Children, Toronto, Canada

Abstract Number: 119 • 2020 Pediatric Rheumatology Symposium

Actual Medication Usage of Patients with Juvenile Onset Systemic Lupus Erythematosus Using Japanese Health Insurance Database

Takayuki Kishi¹, Takako Miyamae ², Ryoko Sakai ³, Yumi Tani ², Satoru Nagata ¹ and Masayoshi Harigai ³, ¹Department of Pediatrics, Tokyo Women's Medical University, Tokyo, Japan, ²Pediatric Rheumatology, Institute of Rheumatology, Tokyo Women's Medical University, Tokyo, Japan, ³Institute of Rheumatology, Tokyo Women's Medical University, Tokyo, Japan