Timothy Hatlen

ORCID: 0000-0003-3755-4309
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About
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Research Areas
  • COVID-19 Clinical Research Studies
  • SARS-CoV-2 and COVID-19 Research
  • HIV/AIDS Research and Interventions
  • Long-Term Effects of COVID-19
  • HIV Research and Treatment
  • HIV/AIDS drug development and treatment
  • Cerebrospinal fluid and hydrocephalus
  • SARS-CoV-2 detection and testing
  • Bladder and Urothelial Cancer Treatments
  • Antimicrobial Resistance in Staphylococcus
  • Hyperglycemia and glycemic control in critically ill and hospitalized patients
  • Urinary Bladder and Prostate Research
  • Spinal Dysraphism and Malformations
  • Hepatitis C virus research
  • Antifungal resistance and susceptibility
  • Nail Diseases and Treatments
  • Fungal Infections and Studies
  • Urinary Tract Infections Management
  • Streptococcal Infections and Treatments
  • Parasitic infections in humans and animals
  • Hernia repair and management
  • Polyomavirus and related diseases
  • Skin Diseases and Diabetes
  • Dermatological and COVID-19 studies
  • HIV-related health complications and treatments

Harbor–UCLA Medical Center
2017-2025

UCLA Medical Center
2017-2025

Los Angeles Medical Center
2020-2024

The Lundquist Institute
2018-2022

University of California, Los Angeles
2020-2022

Providence Sacred Heart Medical Center
2017

University of Washington
2009-2012

Seattle Children's Hospital
2010

Thomas L Holland Adit A. Ginde Roger Paredes Thomas A. Murray Nicole Engen and 95 more Greg Grandits Andrew M. Vekstein Noel Ivey Ahmad Mourad Uriel Sandkovsky Robert Gottlieb Mezgebe Berhe Mamta K. Jain Rubria Marines‐Price Barbine Tchamba Agbor Agbor Lourdes Mateu Sergio España-Cueto Gemma Lladós Eleftherios Mylonakis Ralph Rogers Fadi Shehadeh Michael R. Filbin Kathryn A. Hibbert Kami Kim Thanh Tran Peter E. Morris Evan Cassity Barbara W. Trautner Lavannya M. Pandit Kirk U. Knowlton Lindsay Leither Michael A. Matthay Angela J. Rogers Wonder Drake Beatrice Jones Garyphallia Poulakou Konstantinos N. Syrigos Eduardo Fernández‐Cruz Marisa Di Natale Eyad Almasri Leire Balerdi-Sarasola Sanjay Bhagani Katherine L. Boyle Jonathan D. Casey Peter Chen David J. Douin D. Clark Files Huldrych F. Günthard R. Duncan Hite Robert C. Hyzy Akram Khan Moses Kibirige Robert Kidega Ivan Kimuli Francis Kiweewa Jens‐Ulrik Stæhr Jensen Bradley G. Leshnower Joseph Lutaakome Prasad Manian Vidya Menon José Luís Morales‐Rull D. Shane O’Mahony J. Scott Overcash Srikant Ramachandruni Jay S. Steingrub Hassan S. Taha Michael R. Waters Barnaby Edward Young Andrew Phillips Daniel D. Murray Tomas Ø. Jensen María L. Padilla David Sahner Kathryn Shaw‐Saliba Robin Dewar Marc Teitelbaum Ven Natarajan M. Tauseef Rehman Sarah Pett Fleur Hudson Giota Touloumi Samuel M. Brown Wesley H. Self Christina C. Chang Adriana Sánchez Amy Weintrob Timothy Hatlen Birgit Grund Shweta Sharma Cavan Reilly Pedro Garbes Mark T. Esser Alison Templeton Abdel G. Babiker Victoria J. Davey Annetine C. Gelijns Elizabeth S. Higgs Virginia L. Kan Gail Matthews Bruce Thompson

10.1016/s2213-2600(22)00215-6 article EN publisher-specific-oa The Lancet Respiratory Medicine 2022-07-08
Deborah Theodore Angela R. Branche Lily Zhang Daniel S. Graciaa Madhu Choudhary and 95 more Timothy Hatlen Raadhiya Osman Tara M Babu Samuel T. Robinson Peter B. Gilbert Dean Follmann Holly Janes James G. Kublin Lindsey R. Baden Paul Goepfert Glenda Gray Beatriz Grinsztejn Karen L. Kotloff Cynthia L. Gay Brett Leav Jacqueline M. Miller Ian Hirsch Jerald Sadoff Lisa M. Dunkle Kathleen M. Neuzil Lawrence Corey Ann R. Falsey Hana M. El Sahly Magdalena E. Sobieszczyk Yunda Huang Atoya Adams Eric N. Miller Bruce G. Rankin Steven Shinn Marshall Nash S Green Colleen Jacobsen Jayasree Krishnankutty Sikhongi Phungwayo Richard Glover Stacy Slechta Troy Holdeman Robyn Hartvickson Amber Grant Terry L. Poling Terry D. Klein Thomas Klein Tracy Klein William Smith Richard Gibson Jennifer Winbigler Elizabeth Parker Priyantha N. Wijewardane Eric Bravo Jeffrey Thessing Michelle Maxwell Amanda Horn Catherine Healy Christine Akamine Laurence Chu R. Michelle Chouteau Michael J. Cotugno George H. Bauer Greg Hachigian Masaru Oshita Michael Cancilla Kristen Kiersey William Seger Mohammed Antwi Allison Green Anthony Kim Michaël Desjardins Jennifer Johnson Amy C Sherman Stephen R. Walsh Judith Borger Nafisa Saleem Joel Solis Martha Medina Westly Keating Edgar García Cynthia Bueno Nathan Segall Douglas Denham Thomas Weiss Ayoade Avworo Parke Hedges Cynthia Strout Rica Santiago Yvonne Davis Patty Howenstine Alison Bondell Kristin J. Marks Tina Wang Timothy Wilkin Mary Vogler Carrie D. Johnston Michele P. Andrasik Jessica Andriesen Gail Broder

Importance Current data identifying COVID-19 risk factors lack standardized outcomes and insufficiently control for confounders. Objective To identify associated with COVID-19, severe SARS-CoV-2 infection. Design, Setting, Participants This secondary cross-protocol analysis included 4 multicenter, international, randomized, blinded, placebo-controlled, vaccine efficacy trials harmonized protocols established by the Prevention Network. Individual-level from participants randomized to receive...

10.1001/jamanetworkopen.2023.23349 article EN cc-by-nc-nd JAMA Network Open 2023-07-13

This is a retrospective review of all children with myelomeningocele (MMC) who were undergoing surgery for scoliosis at our institution.Our aim was to investigate possible correlations between poor nutritional indexes and/or positive urinary cultures before perioperative infection risk.Patients have secondary MMC been shown high rate infectious complications. Many found asymptomatic tact infections due their neurogenic bladder. There little literature on risk factors and ways prevent...

10.1097/brs.0b013e3181bf8efe article EN Spine 2010-04-02
Christina E. Barkauskas Eleftherios Mylonakis Garyphallia Poulakou Barnaby Edward Young David M. Vock and 95 more Lianne Siegel Nicole Engen Greg Grandits Nilima Mosaly Andrew M. Vekstein Ralph Rogers Fadi Shehadeh Matthew Kaczynski Evangelia K. Mylona Konstantinos N. Syrigos Vasiliki Rapti David Chien Lye Diong Shiau Hui Lindsay Leither Kirk U. Knowlton Mamta K. Jain Rubria Marines‐Price Alice Osuji J. Scott Overcash Ioannis Kalomenidis Zafeiria Barmparessou Michael R. Waters Karla Zepeda Peter Chen Sam Torbati Francis Kiweewa Nicholus Sebudde Eyad Almasri Alyssa Hughes Sanjay Bhagani Alison Rodger Uriel Sandkovsky Robert Gottlieb Nnakelu Eriobu Barbara W. Trautner Vidya Menon Joseph Lutaakome Michael A. Matthay Philip A. Robinson Konstantinos Protopapas Νikolaos Koulouris Ivan Kimuli Amiran Baduashvili Dominique L. Braun Huldrych F. Günthard Srikanth Ramachandruni Robert Kidega Kami Kim Timothy Hatlen Andrew Phillips Daniel D. Murray Tomas Ø. Jensen María L. Padilla Evan Accardi Kathryn Shaw‐Saliba Robin Dewar Marc Teitelbaum Ven Natarajan Sylvain Laverdure Helene C. Highbarger M. Tauseef Rehman Susan Vogel David Vallée Page Crew Negin Atri Adam Schechner Sarah Pett Fleur Hudson Jonathan Badrock Giota Touloumi Samuel M. Brown Wesley H. Self Crystal M. North Adit A. Ginde Christina C. Chang Anthony D. Kelleher Stephanie Nagy-Agren Shikha Vasudeva David P. Looney Hien Nguyen Adriana Sánchez Amy Weintrob Birgit Grund Shweta Sharma Cavan Reilly Roger Paredes Agnieszka Bednarska Norman P. Gerry Abdel G. Babiker Victoria J. Davey Annetine C. Gelijns Elizabeth S. Higgs Virginia L. Kan Gail Matthews B. Taylor Thompson

Ensovibep (MP0420) is a designed ankyrin repeat protein, novel class of engineered proteins, under investigation as treatment SARS-CoV-2 infection.To investigate if ensovibep, in addition to remdesivir and other standard care, improves clinical outcomes among patients hospitalized with COVID-19 compared care alone.Double-blind, randomized, placebo-controlled, trial. (ClinicalTrials.gov: NCT04501978).Multinational, multicenter trial.Adults COVID-19.Intravenous 600 mg, or placebo.Ensovibep was...

10.7326/m22-1503 article EN Annals of Internal Medicine 2022-08-08

Abstract BACKGROUND Increasing age is a risk factor for COVID-19 severity and mortality; emerging science implicates GM-CSF dysregulated myeloid cell responses in the pathophysiology of severe COVID-19. METHODS We conducted large, global, double-blind, randomized, placebo-controlled study evaluating single 90 mg infusion otilimab (human anti-GM-CSF monoclonal) plus standard care adults hospitalized with respiratory failure systemic inflammation, stratified by clinical status. Primary outcome...

10.1101/2021.04.14.21255475 preprint EN cc-by-nc-nd medRxiv (Cold Spring Harbor Laboratory) 2021-04-17

Programmable valves (PVs) for shunting CSF have increasingly replaced nonprogrammable (NPVs). There been only a few longer-term studies (≥ 5 years) conducted that compared the effectiveness of NPVs with PVs children hydrocephalus, and 1 study has reported as being favorable over PVs. The objective this retrospective was to compare long-term survival these 2 types shunt valves.The authors collected data all patients who underwent insertion or revision between January 1, 2000, December 31,...

10.3171/2012.1.peds10482 article EN Journal of Neurosurgery Pediatrics 2012-04-30

Objective: To move closer to achieving the third target of UNAIDS 90-90-90 goals, we prospectively implemented a viral load (VL) champion (VLC) program aimed at enhancing VL monitoring and recognition treatment failure. Design: Three clinics in eThekwini, Kwa-Zulu Natal (low-, medium- high-volume, encompassing 9184 patients overall) were each assigned VLC. We employed descriptive analysis (chart audit) compare pre-intervention period 1-year post-intervention period. The number with test...

10.5588/pha.18.0063 article EN cc-by Public Health Action 2018-12-21

Abstract Background There is a paucity of outcome data in high-resource settings for cryptococcal meningitis (CM) persons living with HIV (PWH). Novel induction regimens, such as the first-line recommended regimen from World Health Organization, may reduce duration hospitalization and drug-associated adverse events similar treatment outcomes. However, these regimens were not compared to standard care used countries, leading reluctance change current practice. Randomized controlled trials...

10.1093/ofid/ofae631.646 article EN cc-by Open Forum Infectious Diseases 2025-01-29

Abstract Background Therapy related complications, morbidity and mortality are still problematic in treating pneumocystis jirovecii pneumonia (PJP) persons living with HIV (PWH) on antiretroviral therapy (ART). Our study aims to outline patient demographics hospital outcomes among PWH a safety-net during the contemporary ART era. Methods We retrospectively reviewed extracted data from inpatient encounters PJP between 2015-2022 at Los Angeles County, California Results identified 55 (58...

10.1093/ofid/ofae631.643 article EN cc-by Open Forum Infectious Diseases 2025-01-29
Sofía Sábato Susana Benet Ralph Rogers Thomas A. Murray M.A. Skeans and 95 more Beatriz Mothe Roger Paredes Ahmad Mourad Francis Kiweewa Dena Kamel Mamta K. Jain Joseph Lutaakome Mary Grace Nalubega Nicholus Sebudde Eleftherios Mylonakis Dominique L. Braun Timothy Hatlen Ivan Kimuli Carrie L. Kitko Henry Mugerwa Jonathan Kitonsa Kami Kim Phyllis C. Tien Jeroen Highbarger Ashley L. McCormack Adriana Sánchez Daniel D. Murray A. G. T. Babiker Victoria J. Davey D. Clark Files Annetine C. Gelijns Elizabeth S. Higgs Virginia L. Kan Gail Matthews Sarah Pett H. Clifford Lane Cavan Reilly Anna L. Goodman Jens Lundgren José Moltó H. Clifford Lane Elizabeth S. Higgs Susan Vogel J.W. Tierney Mary Smolskis Laura A. McNay Sharon Segal Raim Kathryn Shaw‐Saliba Mark D. Miller David Vallée Lucy Chung Nayon Kang Robin Dewar Ven Natarajan Weizhong Chang Brad T. Sherman Adam Rupert Helene Highbarger Michael Baseler Ashley L. McCormack Jeroen Highbarger Perrine Lallemand M. Tauseef Rehman Tomozumi Imamichi Sylvain Laverdure Sharada Paudel Kyndal Cook Kendra Haupt Lisheng Dai Mustafa A. Khan Allison Hazen Yunden Badralmaa Stacey J. Adam James D. Neaton Adam A. C. Burns Amy Carlsen Anita Carter Eileen Denning Alain DuChêne Kate Eckroth Nicole Engen Alex Frase Greg Grandits Merrie Harrison Payton Kaiser Sue Meger Shweta Sharma Mistry Thomas A. Murray Kien Quan Siu Fun Quan Cavan Reilly M.A. Skeans Bruce Thompson Jamie Walski Deborah Wentworth Claire Rappoport Annetine C. Gelijns Ellen Moquete Karen O’Sullivan Evan Accardi

The impact on immunogenicity and efficacy of SARS-CoV-2 vaccination in people with prior COVID-19 could differ depending timing number doses. VATICO study randomized 66 hospitalized recovered individuals to receive either immediate or deferred vaccination, one two doses mRNA vaccines. We measured binding neutralizing antibodies against at enrollment longitudinally. Median (IQR) time from infection first was 68 (53–75) days the group, 151 (137–173) group. At week 48, vaccine did not influence...

10.1038/s41598-025-92742-x article EN cc-by-nc-nd Scientific Reports 2025-03-22

Abstract Dolutegravir resistance is emerging in routine clinical contexts southern Africa, primarily patients with prior treatment experience failing dolutegravir-based antiretroviral therapy (ART). This potential issue was raised by The Nucleosides and Darunavir/Dolutegravir Africa trial that compared dolutegravir boosted protease inhibitor–based as second-line ART, which new observed at failure. However, recent data suggest also risk are who were transitioned to from non-nucleoside reverse...

10.1093/ofid/ofae321 article EN cc-by-nc-nd Open Forum Infectious Diseases 2024-06-05

Human adenovirus (HAdV) is a linear, non-enveloped, double-stranded DNA virus that typically causes mild respiratory, gastrointestinal, and conjunctival illnesses in healthy persons.1 However, HAdV may cause more severe infection immunocompromised patients, especially those who have received organ transplants. In kidney transplant recipients, urinary tract the most frequently reported manifestation at 4.8%, with rare dissemination.2,3 surveillance study, 6.5% of recipients will positive...

10.1016/j.ekir.2017.08.004 article EN cc-by-nc-nd Kidney International Reports 2017-08-12

Although corticosteroid therapy is the standard of care for all patients hospitalized with severe coronavirus disease 2019 (COVID-19), studies demonstrating mortality–benefit ratio corticosteroids were limited to fully evaluate their adverse effects. To determine severity corticosteroid-induced hyperglycemia in and without diabetes mellitus, we retrospectively collected data from medical records COVID-19 before after care. Corticosteroid-induced was more than those diabetes. Additionally,...

10.1016/j.mayocpiqo.2022.07.004 article EN cc-by-nc-nd Mayo Clinic Proceedings Innovations Quality & Outcomes 2022-08-08
Prasanna Jagannathan Kara W. Chew Mark J Giganti Michael D. Hughes Carlee Moser and 95 more Mark Main Phillip Monk Arzhang Cyrus Javan Jonathan Z. Li Courtney V. Fletcher Caitlyn McCarthy David A. Wohl Eric S. Daar Joseph J. Eron Judith S. Currier Upinder Singh Davey M. Smith William A. Fischer Kara W. Chew Davey M. Smith Eric S. Daar David A. Wohl Judith S. Currier Joseph J. Eron Arzhang Cyrus Javan Michael D. Hughes Carlee Moser Mark J Giganti Justin Ritz Lara Hosey Jhoanna Roa Nilam Patel Kelly Colsh Irene Rwakazina Justine Beck Scott F. Sieg Jonathan Z. Li Courtney V. Fletcher William A. Fischer Teresa H. Evering Rachel Bender Ignacio Sandra Wagner Cardoso Katya Corado Prasanna Jagannathan Nikolaus Jilg Alan S. Perelson Sandy Pillay Cynthia Riviere Upinder Singh Babafemi Taiwo Joan Gottesman Matthew Newell Susan Pedersen Joan Dragavon Cheryl Jennings Brian Greenfelder William Murtaugh Jan Kosmyna Morgan Gapara Akbar Shahkolahi Mark Main Gerald Pierone Juliana Elliott Jeffrey M. Jacobson Leila Hojat Julie Pasternak Jonathan Berardi Celine Arar Yevgeniy Bukhman Manish Kumar Jain Eugene Bukhman Sadia Shaik Timothy Hatlen Kelly E. Dooley Becky Becker Adaliah Wilkins J. Pérez Eloy Roman Heriberto Fernández Keila Hoover James Renfroe Mauney Weldon Genei Bougher Carlos Malvestutto Heather Harber Robyn Cicarella Gene Neytman Jack Herman Craig Herman Mariam Aziz J. A. Swiatek Divya Pathak Madhu Choudhary Jennifer Sullivano Olayemi Osiyemi Myriam Izquierdo Odelsey Torna Aleen Khodabakhshian Samantha Fortier Constance A. Benson

10.1016/j.eclinm.2023.102250 article EN EClinicalMedicine 2023-10-06

Fungal endocarditis remains an uncommon clinical diagnosis, though is likely to become more frequent due the global increase in transplantations and cardiac valvular surgery. A case of prosthetic valve Aspergillus fumigatus described that was diagnosed with serologic fungal markers confirmed positive blood cultures, finding.

10.1016/j.mmcr.2018.10.004 article EN cc-by Medical Mycology Case Reports 2018-10-24

Identification of patients on antiretroviral therapy (ART) with virological failure (VF) and the response in public health sector remain significant challenges. We previously reported improvement routine viral load (VL) monitoring after ART commencement through a system-strengthening, nurse-led 'VL champion' programme as part multidisciplinary team three clinics Durban, South Africa.To report impact VL champion model adapted to identify, support co-ordinate management individuals VF...

10.7196/samj.2021.v111i4.15432 article EN cc-by-nc South African Medical Journal 2021-03-31
Thomas L Holland Adit A. Ginde Roger Paredes Thomas A. Murray Nicole Engen and 95 more Greg Grandits Andrew M. Vekstein Noel Ivey Ahmad Mourad Uriel Sandkovsky Robert Gottlieb Mezgebe Berhe Mamta K. Jain Rubria Marines‐Price Barbine Tchamba Agbor Agbor Lourdes Mateu Sergio España-Cueto Gemma Lladós Eleftherios Mylonakis Ralph Rogers Fadi Shehadeh Michael R. Filbin Kathryn A. Hibbert Kami Kim Thanh Tran Peter E. Morris Evan Cassity Barbara W. Trautner Lavannya M. Pandit Kirk U. Knowlton Lindsay Leither Michael A. Matthay Angela J. Rogers Wonder Drake Beatrice Jones Garyphallia Poulakou Konstantinos N. Syrigos Eduardo Fernández‐Cruz Marisa Di Natale Eyad Almasri Leire Balerdi-Sarasola Sanjay Bhagani Katherine L. Boyle Jonathan D. Casey Peter Chen David J. Douin D. Clark Files Huldrych F. Günthard R. Duncan Hite Robert C. Hyzy Akram Khan Moses Kibirige Robert Kidega Ivan Kimuli Francis Kiweewa Jens‐Ulrik Stæhr Jensen Bradley G. Leshnower Joseph Lutaakome Prasad Manian Vidya Menon José Luís Morales‐Rull D. Shane O’Mahony J. Scott Overcash Srikant Ramachandruni Jay S. Steingrub Hassan S. Taha Michael R. Waters Barnaby Edward Young Andrew Phillips Daniel D. Murray Tomas Ø. Jensen María L. Padilla David Sahner Kathryn Shaw‐Saliba Robin Dewar Marc Teitelbaum Ven Natarajan M. Tauseef Rehman Sarah Pett Fleur Hudson Giota Touloumi Samuel M. Brown Wesley H. Self Christina C. Chang Adriana Sánchez Amy Weintrob Timothy Hatlen Birgit Grund Shweta Sharma Cavan Reilly Pedro Garbes Mark T. Esser Alison Templeton Abdel G. Babiker Victoria J. Davey Annetine C. Gelijns Elizabeth S. Higgs Virginia L. Kan Gail Matthews Bruce Thompson

Background: Tixagevimab/cilgavimab is a neutralising monoclonal antibody combination hypothesized to improve outcomes for hospitalised COVID-19 patients.Methods: In phase 3, blinded, randomised, placebo-controlled trial, adults at 81 sites on four continents were assigned receive intravenous tixagevimab 300 mg/cilgavimab mg or placebo, in addition remdesivir and other standard care. The primary outcome was time sustained recovery through day 90, defined as 14 consecutive days home after...

10.2139/ssrn.4087355 article EN SSRN Electronic Journal 2022-01-01

Cryptococcal meningitis accounts for an estimated 25% of AIDS-associated mortality in sub-Saharan Africa. Accumulating animal and human evidence suggest that a higher, more fungicidal, dose fluconazole during consolidation therapy could be effective controlling residual infection may help significantly reduce posthospitalization mortality. Although the potential toxicity is low, use at 800 mg/day requires examination randomized clinical trial. In interim, within countries where postdischarge...

10.1089/aid.2017.0240 article EN AIDS Research and Human Retroviruses 2018-01-22

Neutralizing monoclonal antibodies (nmAbs) failed to show clear benefit for hospitalized patients with coronavirus disease 2019 (COVID-19). Dynamics of virologic and immunologic biomarkers remain poorly understood.

10.1093/infdis/jiad446 article EN cc-by The Journal of Infectious Diseases 2023-10-06

Biomarker guided therapy could improve management of COVID-19 inpatients. Although some results indicate that antibody tests are prognostic, little is known about patient using point-of-care (POC) tests. inpatients were recruited to evaluate 2 POC tests: LumiraDX and RightSign. Ease use data was collected. Blood also collected for centralized testing established assays (GenScript cPass). A nested case-control study assessed if conducted on stored specimens predictive time sustained recovery,...

10.1093/infdis/jiae452 article EN The Journal of Infectious Diseases 2024-09-12
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