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ClinicalTrials.gov public records Last synced May 22, 2026, 12:34 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 1–12 of 12 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: JC Virus Infection Clear all
Completed No phase listed Observational Accepts healthy volunteers
View directory record Official record
Conditions
PML, AIDS
Interventions
Not listed
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
Not listed
Enrollment
450 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2005
U.S. locations
6
States / cities
Los Angeles, California • Chicago, Illinois • Baltimore, Maryland + 1 more
Source: ClinicalTrials.gov public record
Updated Mar 16, 2009 · Synced May 22, 2026, 12:34 AM EDT
Terminated Phase 1Phase 2 Interventional Results available
View directory record Official record
Conditions
Progressive Multifocal Leukoencephalopathy
Interventions
mefloquine
Drug
Lead sponsor
Biogen
Industry
Eligibility
18 Years to 75 Years
Enrollment
37 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
5
States / cities
Chicago, Illinois • Baltimore, Maryland • Boston, Massachusetts + 2 more
Source: ClinicalTrials.gov public record
Updated Jul 30, 2014 · Synced May 22, 2026, 12:34 AM EDT
Recruiting Phase 2 Interventional
View directory record Official record
Conditions
Acquired Immunodeficiency Syndrome, BK Virus Infection, Human Immunodeficiency Virus, JC Virus Infection, Malignant Neoplasm, Merkel Cell Carcinoma, Merkel Cell Polyomavirus Infection, Viral Encephalitis
Interventions
Allogeneic BK-specific Cytotoxic T-lymphocytes, Laboratory Biomarker Analysis
Biological · Other
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
Not listed
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2027
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated May 19, 2026 · Synced May 22, 2026, 12:34 AM EDT
Completed Not applicable Interventional Results available
View directory record Official record
Conditions
Infection
Interventions
Multivirus Specific T cells
Biological
Lead sponsor
AlloVir
Industry
Eligibility
Not listed
Enrollment
82 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2019
U.S. locations
2
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jul 19, 2021 · Synced May 22, 2026, 12:34 AM EDT
Completed No phase listed Observational
View directory record Official record
Conditions
Relapsing Multiple Sclerosis
Interventions
natalizumab
Drug
Lead sponsor
Biogen
Industry
Eligibility
Not listed
Enrollment
35,895 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2015
U.S. locations
473
States / cities
Birmingham, Alabama • Cullman, Alabama • Tucaloosa, Alabama + 386 more
Source: ClinicalTrials.gov public record
Updated Sep 28, 2016 · Synced May 22, 2026, 12:34 AM EDT
Completed No phase listed Observational
View directory record Official record
Conditions
Progressive Multifocal Leukoencephalopathy, Multiple Sclerosis
Interventions
Not listed
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2016
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 28, 2016 · Synced May 22, 2026, 12:34 AM EDT
Terminated Phase 2Phase 3 Interventional Results available
View directory record Official record
Conditions
Adenovirus Infection, BK Virus Infection, Cytomegalovirus Infections, Epstein-Barr Virus Infections, Human Herpes Virus-6 Infection, JC Virus Infection
Interventions
Posoleucel (ALVR105), Placebo
Biological
Lead sponsor
AlloVir
Industry
Eligibility
Not listed
Enrollment
451 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
35
States / cities
Birmingham, Alabama • Scottsdale, Arizona • Duarte, California + 31 more
Source: ClinicalTrials.gov public record
Updated May 15, 2024 · Synced May 22, 2026, 12:34 AM EDT
Completed Phase 2Phase 3 Interventional Results available
View directory record Official record
Conditions
Adenovirus Infection, BK Virus Infection, Cytomegalovirus Infections, Epstein-Barr Virus Infections, Human Herpes Virus-6 Infection, JC Virus Infection
Interventions
Posoleucel (ALVR105)
Biological
Lead sponsor
AlloVir
Industry
Eligibility
1 Year and older
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
16
States / cities
Birmingham, Alabama • Duarte, California • San Francisco, California + 12 more
Source: ClinicalTrials.gov public record
Updated May 8, 2024 · Synced May 22, 2026, 12:34 AM EDT
Completed No phase listed Observational
View directory record Official record
Conditions
Multiple Sclerosis
Interventions
Tysabri® (natalizumab)
Drug
Lead sponsor
Biogen
Industry
Eligibility
Not listed
Enrollment
1,096 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
11
States / cities
Aurora, Colorado • Atlanta, Georgia • Cullman, Georgia + 8 more
Source: ClinicalTrials.gov public record
Updated Oct 4, 2016 · Synced May 22, 2026, 12:34 AM EDT
Completed No phase listed Observational
View directory record Official record
Conditions
Relapsing-Remitting Multiple Sclerosis
Interventions
natalizumab
Biological
Lead sponsor
Biogen
Industry
Eligibility
18 Years to 65 Years
Enrollment
231 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2018
U.S. locations
44
States / cities
Homewood, Alabama • Sun City, Arizona • La Jolla, California + 39 more
Source: ClinicalTrials.gov public record
Updated Feb 11, 2019 · Synced May 22, 2026, 12:34 AM EDT
Recruiting Phase 1 Interventional
View directory record Official record
Conditions
Adenovirus Infection, BK Virus Infection, Cytomegaloviral Infection, Hematopoietic and Lymphoid Cell Neoplasm, JC Virus Infection, Malignant Solid Neoplasm, Symptomatic COVID-19 Infection Laboratory-Confirmed
Interventions
Virus-specific Cytotoxic T-lymphocytes
Biological
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Apr 15, 2026 · Synced May 22, 2026, 12:34 AM EDT
Completed No phase listed Observational
View directory record Official record
Conditions
Progressive Multifocal Leukoencephalopathy
Interventions
Not listed
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
18 Years and older
Enrollment
126 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2018
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 13, 2023 · Synced May 22, 2026, 12:34 AM EDT