Kathleen B. Schwarz

ORCID: 0000-0003-0753-0402
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About
Contact & Profiles
Research Areas
  • Liver Disease Diagnosis and Treatment
  • Hepatitis B Virus Studies
  • Hepatitis C virus research
  • Pediatric Hepatobiliary Diseases and Treatments
  • Liver Disease and Transplantation
  • Gallbladder and Bile Duct Disorders
  • Congenital Anomalies and Fetal Surgery
  • Hepatitis Viruses Studies and Epidemiology
  • Organ Transplantation Techniques and Outcomes
  • Liver Diseases and Immunity
  • Intestinal Malrotation and Obstruction Disorders
  • Clinical Nutrition and Gastroenterology
  • Metabolism and Genetic Disorders
  • Neonatal Health and Biochemistry
  • Viral gastroenteritis research and epidemiology
  • Drug Transport and Resistance Mechanisms
  • Esophageal and GI Pathology
  • Drug-Induced Hepatotoxicity and Protection
  • Infant Nutrition and Health
  • Chronic Lymphocytic Leukemia Research
  • Cystic Fibrosis Research Advances
  • Adolescent and Pediatric Healthcare
  • Childhood Cancer Survivors' Quality of Life
  • Lymphoma Diagnosis and Treatment
  • Child Nutrition and Feeding Issues

Johns Hopkins Medicine
2016-2025

Johns Hopkins University
2016-2025

Rady Children's Hospital-San Diego
2022-2024

University of California, San Diego
2020-2023

Research Network (United States)
2022

Institut für Sozialforschung und Sozialwirtschaft
2022

Johns Hopkins Hospital
1995-2021

Arbor Research Collaborative for Health
2021

University of California, San Francisco
2021

Children's Hospital of Philadelphia
2019

No all-oral, direct-acting antiviral regimens have been approved for children with chronic hepatitis C virus (HCV) infection. We conducted a phase 2, multicenter, open-label study to evaluate the efficacy and safety of ledipasvir-sofosbuvir in adolescents HCV genotype 1 One hundred patients aged 12-17 years received combination tablet 90 mg ledipasvir 400 sofosbuvir once daily 12 weeks. On tenth day following initiation dosing, 10 underwent an intensive pharmacokinetic evaluation...

10.1002/hep.28995 article EN Hepatology 2016-12-20

The epidemiology of primary hepatic malignancies in U.S. children is poorly characterized. We analyzed the incidence, mortality, and characteristics residents less than 20 years age. Fatal persons age, between 1979 1996, were identified using multiple-cause-of-death database (National Center for Health Statistics). Histologically confirmed occurring 1973 1997 Surveillance, Epidemiology, End Results (SEER) database. Between 918 malignancy deaths (average, 0.7/1,000,000/year) reported...

10.1053/jhep.2003.50375 article EN Hepatology 2003-09-01

Lamivudine therapy is effective for chronic hepatitis B infection in adults. We evaluated the efficacy and tolerability of lamivudine as a treatment with virus (HBV) children.

10.1056/nejmoa012452 article EN New England Journal of Medicine 2002-05-30

There is relatively little information in the literature on histopathology of chronic hepatitis C children. The Peds-C Trial, designed to test efficacy and safety peginterferon alfa-2a ribavirin children, provided an opportunity examine liver biopsies from 121 treatment-naïve ages 2 16 (mean, 9.8 years) infected with virus (HCV) no other identifiable cause for disease, signs hepatic decompensation, or another significant nonhepatic disease. Liver were scored inflammation, fibrosis,...

10.1002/hep.22094 article EN Hepatology 2007-12-31

ABSTRACT Hepatitis C virus (HCV) is an RNA that affects >180 million individuals worldwide with a high propensity for chronic infection. Children HCV infection differ from adults in several ways including some modes of transmission, rates clearance, progression fibrosis, and the duration potential when acquired at birth. Since discovery 1989, there have been significant advances understanding virology natural history children. In addition, are now treatment options children hepatitis many...

10.1097/mpg.0b013e318258328d article EN Journal of Pediatric Gastroenterology and Nutrition 2012-04-08
Kyle Soltys George Mazariegos Robert H. Squires Rakesh Sindhi Ravinder Anand and 95 more Stephen P. Dunn Jerome Manendez Louise Flynn Maureen M. Jonas Laura E. Krawczuk Marielle Christoff Robert E. Kane Harvey Solomon E. A. Phillips Laurie Ferrer Thomas G. Heffron J. DePaolo T Pillen L Davis John C. Bucuvalas Fred Ryckman Andre Hawkins Gajra Arya Michael R. Narkewicz Ronald J. Sokol F Karrer C. Vanderwel Mark Kathy Orban-Eller Abhi Humar Brenda Durand Leslie L. Studenski Elizabeth B. Rand Kathleen Anderer George Mazariegos Nydia Chien Lynn Seward Paul Atkison Jay Roden Naveen Mittal Lisa Cutright Grzegorz Telega Stacee M. Lerret Estelle M. Alonso Joan Lokar Susan Kelly Katie Neighbors Walter S. Andrews James F. Daniel V. Fioravanti A. Tendick Anne S. Lindblad Ravinder Anand Changhong Song Karen Martz Jeff Mitchell Gladys Fraser Nicole Hornbeak Nirali Patel Jianghang He Annie Fecteau Vicky L. Ng Maria De Angelis Andréanne Benidir Kathleen B. Schwarz Paul Colombani May Kay Alford Michelle Felix Robert Jurao James D. Eason John Eshun Sandra L. Powell Deborah K. Freese Jody Weckwerth Jean Greseth Lori Young Robert A. Fisher Michael Akyeampong Samuel So William E. Berquist Marcia Castillo Annalie Bula Sukru Emre Benjamin L. Shneider Nanda Kerkar Salvador Cuellar Saul J. Karpen Jaymee Mayo John A. Goss Douglas S. Fishman Val McLin Beth Carter Christine A. O’Mahony Thomas A. Aloia Donna Garner Susan Gilmour Bernadette Dodd Norman Kneteman Sue V. McDiarmid Susan Fiest Steven J. Lobritto

Late graft loss (LGL) and late mortality (LM) following liver transplantation (LT) in children were analyzed from the studies of pediatric (SPLIT) database. Univariate multivariate associations between pre‐ postoperative factors LGL LM 872 patients alive with their primary allografts 1 year after LT reviewed. Thirty‐four subsequently died 35 underwent re‐LT (LGL). Patients who survive first posttransplant had 5‐year patient survival rates 94.2% 89.2%, respectively. Graft was caused by...

10.1111/j.1600-6143.2007.01893.x article EN cc-by-nc-nd American Journal of Transplantation 2007-07-03

N-acetylcysteine (NAC) was found to improve transplantation-free survival in only those adults with nonacetaminophen (non-APAP) acute liver failure (ALF) and grade 1-2 hepatic encephalopathy (HE). Because non-APAP ALF differs significantly between children adults, the Pediatric Acute Liver Failure (PALF) Study Group evaluated NAC PALF. Children from birth through age 17 years enrolled PALF registry were eligible enter an adaptively allocated, doubly masked, placebo-controlled trial using a...

10.1002/hep.26001 article EN Hepatology 2012-08-10

Chronic hepatitis B virus (HBV) infection in children presents a therapeutic challenge for the practitioner. Decisions regarding selection of patients who may benefit from treatment, appropriate timing and choice antiviral therapy are complex compounded by limited number drugs that have been studied children. An expert panel nationally recognized pediatric liver specialists was convened Hepatitis Foundation on August 11, 2009, to consider clinical practice relative options available A...

10.1002/hep.23934 article EN Hepatology 2010-08-29

The etiology of biliary atresia (BA) is unknown. Given that patterns anomalies might provide etiopathogenetic clues, we used data from the North American Childhood Liver Disease Research and Education Network to analyze in infants with BA. In all, 289 who were enrolled prospective database prior surgery at any 15 participating centers evaluated. Group 1 was nonsyndromic, isolated BA (without major malformations) (n = 242, 84%), 2 least one malformation considered as defined by National Birth...

10.1002/hep.26512 article EN Hepatology 2013-05-23
Benjamin L. Shneider John C. Magee Saul J. Karpen Elizabeth B. Rand Michael R. Narkewicz and 95 more Lee M. Bass Kathleen B. Schwarz Peter F. Whitington Jorge A. Bezerra Nanda Kerkar Barbara Haber Philip Rosenthal Yumirle P. Turmelle Jean P. Molleston Karen F. Murray Vicky L. Ng Kasper S. Wang René Romero Robert H. Squires Ronen Arnon Averell H. Sherker Jeffrey Moore Wen Ye Ronald J. Sokol Estella M. Alonso Elizabeth Kaurs Sue Kelly Kevin E. Bove James E. Heubi Alexander Miethke Greg Tiao J. Kenneth Denlinger Andrea Ferris Amy G. Feldman Cara L. Mack Frederick J. Suchy Shikha S. Sundaram Johan Van Hove Michelle Hite S KANTOR Todd Q. Miller J. Joshua Smith Becky VanWinkle Kathleen M. Loomes Henry C. Lin David A. Piccoli Pierre Russo Nancy B. Spinner Lindsay C. Brown Emily Elgert Jessi Erlichman Feras Alissa Douglas Lindblad George Mazariegos Roberto Ortiz‐Aguayo David H. Perlmutter Rakesh Sindhi Veena Venkat Jerry Vockley Kathy Bukauskas Adam Kufen Madeline Schulte Laura N. Bull Shannon Fleck Camille Langlois Jeffrey Teckman Vikki Kociela Stacy Postma Kathleen Mullan Harris Molly Bozic Girish Subbarao Beth Byam Ann Klipsch Cindy Sawyers Simon Horslen Evelyn Hsu Kara Cooper Melissa Young Binita M. Kamath Maria DeAngelis Constance M. O’Connor Krista VanRoestel Arpita Parmar Claudia Quammie Kelsey Hung Stephen L. Guthery Kyle Jensen Ann Rutherford Nanda Kerker Sonia Michail Danny Thomas Catherine J. Goodhue Nikita Gupta Mariam Vos Liezl de la Cruz-Tracey Dana Hankerson-Dyson Rita Tory Taieshia C. Turner-Green Allison Wellons Mary L. Brandt

10.1016/j.jpeds.2015.11.058 article EN The Journal of Pediatrics 2015-12-24

Children with chronic hepatitis C virus infection have limited treatment options. We evaluated the all-oral combination of sofosbuvir and ribavirin in adolescents aged 12-17 genotype 2 or 3 (ClinicalTrials.gov NCT02175758). Fifty-two patients received 400 mg once daily weight-based twice for 12 (genotype 2) 24 3) weeks. The pharmacokinetics its metabolite GS-331007 were by intensive plasma sampling at day 7 first 10 enrolled sparse all throughout treatment. primary efficacy endpoint was...

10.1002/hep.29278 article EN Hepatology 2017-05-24

Currently, there are no interferon-free treatments available for hepatitis C virus (HCV)-infected patients younger than 12 years. We evaluated the safety and effectiveness of all-oral regimen ledipasvir-sofosbuvir ± ribavirin in HCV-infected children aged 6 to <12 In an open-label study, years received ledipasvir 45 mg-sofosbuvir 200 mg as two fixed-dose combination tablets 22.5/100 once daily, with or without ribavirin, 24 weeks, depending on HCV genotype cirrhosis status. The primary...

10.1002/hep.30123 article EN Hepatology 2018-08-06

For children under 12 years of age who have chronic hepatitis C virus (HCV) infection, there are currently no approved treatments with direct-acting antiviral agents. We therefore evaluated the safety and efficacy ledipasvir-sofosbuvir in HCV-infected aged 3 to <6 years. In an open-label study, patients old chronically infected HCV genotype 1 (n = 33) or 4 1) received weight-based doses combined as granules (33.75 mg/150 mg for weights <17 kg 45 mg/200 ≥17 kg) weeks. The primary endpoint was...

10.1002/hep.30830 article EN cc-by-nc-nd Hepatology 2019-06-20
Shannon M. Vandriel Liting Li Huiyu She Jian‐She Wang Melissa A. Gilbert and 88 more Irena Jankowska Piotr Czubkowski Dorota Gliwicz‐Miedzińska Emmanuel Gonzalès Emmanuel Jacquemin Jérôme Bouligand Nancy B. Spinner Kathleen M. Loomes David A. Piccoli Lorenzo D’Antiga Emanuele Nicastro Étienne Sokal Tanguy Demaret Noelle H. Ebel Jeffrey A. Feinstein Rima Fawaz Silvia Nastasio Florence Lacaille Dominique Debray Henrik Arnell Björn Fischler Susan Siew Michael Stormon Saul J. Karpen René Romero Kyung Mo Kim Woo Yim Baek Winita Hardikar Sahana Shankar Amin J. Roberts Helen Evans M. Kyle Jensen Marianne Kavan Shikha S. Sundaram Alexander Chaidez Palaniswamy Karthikeyan María Camila Sanchez Maria Lorena Cavalieri Henkjan J. Verkade Way Seah Lee James E. Squires Christina Hajinicolaou Chatmanee Lertudomphonwanit Ryan T. Fischer Catherine Larson‐Nath Yael Mozer‐Glassberg Çiğdem Arıkan Henry C. Lin Jesús Quintero Seema Alam Déirdre Kelly Elisa de Carvalho Cristina Targa Ferreira Giuseppe Indolfi Rubén E. Quirós‐Tejeira Pinar Bulut Pier Luigi Calvo Zerrin Önal Pamela L. Valentino Dev M. Desai John Eshun Maria Rogalidou Antal Dezsöfi Sabina Więcek Gabriella Nebbia Raquel Borges Pinto Victorien M. Wolters María Legarda Tamara Andréanne N. Zizzo Jennifer García Kathleen B. Schwarz Marisa Beretta Thomas Damgaard Sandahl Carolina Jiménez‐Rivera Nanda Kerkar Jernej Brecelj Quais Mujawar Nathalie Rock Cristina Molera Busoms Wikrom Karnsakul Eberhard Lurz Ermelinda Santos Silva Niviann Blondet Luís Bujanda Uzma Shah Richard J. Thompson Bettina E. Hansen Binita M. Kamath

Background and Aims: Alagille syndrome (ALGS) is a multisystem disorder, characterized by cholestasis. Existing outcome data are largely derived from tertiary centers, real‐world lacking. This study aimed to elucidate the natural history of liver disease in contemporary, international cohort children with ALGS. Approach Results: was multicenter retrospective clinically and/or genetically confirmed ALGS diagnosis, born between January 1997 August 2019. Native survival (NLS) event‐free rates...

10.1002/hep.32761 article EN cc-by-nc Hepatology 2022-08-29

Summary Background Data on oral vancomycin for primary sclerosing cholangitis (PSC)‐associated inflammatory bowel disease (IBD) are limited. Aims Using data from the Paediatric PSC Consortium, to examine effect of IBD activity. Methods In this retrospective multi‐centre cohort study, we matched vancomycin‐treated and untreated patients (1:3) based duration at time outcome assessment. The was Physician Global Assessment (PGA) clinical activity after 1 year (±6 months) vancomycin. We used...

10.1111/apt.17936 article EN Alimentary Pharmacology & Therapeutics 2024-03-10

One year of lamivudine treatment results in increased hepatitis B e antigen (HBeAg) seroconversion and serum virus (HBV) DNA negativity children with chronic high alanine aminotransferase concentrations. Two hundred seventy-six who participated a 1-year randomized, placebo-controlled study were enrolled 24-month, open-label extension. Patients stratified into two groups based on HBeAg status at week 48 the previous study: 213 HBeAg-positive entered arm, 63 HBeAg-negative an observation arm...

10.1002/hep.21020 article EN Hepatology 2006-01-27

Hepatitis C virus (HCV) infection is a global health problem affecting 170 million individuals worldwide. In the United States, there are approximately 7 adults and 100,000 children chronically infected with HCV (1,2). The importance of stems from its proclivity to cause insidious liver damage over many years, including chronic hepatitis, cirrhosis, cancer. adults, leading for cancer worldwide (3). financial burden this viral staggering, projected medical costs $10.7 billion in 2010 2019...

10.1097/mpg.0b013e318170af04 article EN Journal of Pediatric Gastroenterology and Nutrition 2009-05-01

ABSTRACT Objective: Hepatitis C virus (HCV) infection is associated with decreased quality of life (QOL) and neurocognitive dysfunction in adults, but little known about its impact on children their caregivers. Patients Methods: We studied the QOL, behavioral, emotional, cognitive functioning 114 treatment‐naïve HCV enrolled a placebo‐controlled, randomized, multisite clinical trial evaluating peginterferon α‐2a alone or ribavirin. Baseline assessment included measures children's...

10.1097/mpg.0b013e318185998f article EN Journal of Pediatric Gastroenterology and Nutrition 2009-03-01

Malnutrition is a significant clinical problem in infants with biliary atresia. The natural history of poor growth and its potential association early transplantation or death children atresia was determined. Serial weight- length-for-age z-scores were computed as part retrospective study 100 who underwent hepatoportoenterostomy (HPE) for at 9 U.S. pediatric centers between 1997 2000. Poor outcome defined by 24 months age (n = 46) good survival native liver total serum bilirubin less than 6...

10.1002/hep.21923 article EN Hepatology 2007-10-10
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