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Showing 1–17 of 17 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: HIV Encephalitis Clear all
Completed Phase 2 Interventional

Safety and Effectiveness of Topotecan HCl to Treat HIV-Infected Patients With AIDS-Related Progressive Multifocal Leukoencephalopathy (PML)

NCT00002395
View directory record Official record
Conditions
HIV Infections, Leukoencephalopathy, Progressive Multifocal
Interventions
Topotecan
Drug
Lead sponsor
SmithKline Beecham
Industry
Eligibility
18 Years and older
Enrollment
54 participants
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
5
States / cities
Los Angeles, California • San Francisco, California • Miami, Florida + 2 more
Source: ClinicalTrials.gov public record
Updated Jun 23, 2005 · Synced Jul 22, 2026, 4:52 AM EDT
Recruiting Phase 1Phase 2 Interventional Accepts healthy volunteers

SV2A & TSPO PET Imaging Measures to Reveal Mechanisms of HIV Neuropathogenesis During Antiretroviral Therapy

NCT05586581
View directory record Official record
Conditions
HIV Associated Neurocognitive Disorder, HIV Dementia, HIV Encephalitis, Healthy
Interventions
SV2A PET, TSPO PET
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 80 Years
Enrollment
70 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2030
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Sep 8, 2025 · Synced Jul 22, 2026, 4:52 AM EDT
Recruiting Phase 2 Interventional

Cytotoxic T Lymphocytes in Treating Patients With Malignancies With BK and/or JC Virus

NCT02479698
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 Jun 11, 2026 · Synced Jul 22, 2026, 4:52 AM EDT
Completed Phase 1 Interventional

A Study of Azithromycin Plus Pyrimethamine in the Treatment of a Brain Infection in Patients With AIDS

NCT00000966
View directory record Official record
Conditions
Toxoplasmosis, Cerebral, HIV Infections
Interventions
Azithromycin, Pyrimethamine, Leucovorin calcium
Drug
Lead sponsor
Pfizer
Industry
Eligibility
13 Years and older
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
11
States / cities
Los Angeles, California • Miami, Florida • Worcester, Massachusetts + 5 more
Source: ClinicalTrials.gov public record
Updated Aug 25, 2008 · Synced Jul 22, 2026, 4:52 AM EDT
Completed Phase 1 Interventional

A Study of Pyrimethamine in the Treatment of Infection by a Certain Parasite in HIV-Positive Patients

NCT00000973
View directory record Official record
Conditions
Toxoplasmosis, Cerebral, HIV Infections
Interventions
Pyrimethamine, Leucovorin calcium, Zidovudine
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 1995
U.S. locations
2
States / cities
New York, New York • Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Nov 3, 2021 · Synced Jul 22, 2026, 4:52 AM EDT
Completed Not applicable Interventional

A Randomized Prospective Study of Pyrimethamine Therapy for Prevention of Toxoplasmic Encephalitis in HIV-Infected Individuals With Serologic Evidence of Latent Toxoplasma Gondii Infection

NCT00000666
View directory record Official record
Conditions
Toxoplasmosis, Cerebral, HIV Infections
Interventions
Pyrimethamine
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
13 Years and older
Enrollment
600 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 1992
U.S. locations
16
States / cities
San Francisco, California • Denver, Colorado • New Haven, Connecticut + 11 more
Source: ClinicalTrials.gov public record
Updated Oct 28, 2012 · Synced Jul 22, 2026, 4:52 AM EDT
Completed Not applicable Interventional

A Pilot Study of Oral Clindamycin and Pyrimethamine for the Treatment of Toxoplasmic Encephalitis in Patients With AIDS

NCT00000674
View directory record Official record
Conditions
Toxoplasmosis, Cerebral, HIV Infections
Interventions
Pyrimethamine, Leucovorin calcium, Clindamycin
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
13 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 1992
U.S. locations
13
States / cities
Los Angeles, California • Palo Alto, California • San Diego, California + 8 more
Source: ClinicalTrials.gov public record
Updated May 17, 2012 · Synced Jul 22, 2026, 4:52 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

PET Evaluation of Brain Peripheral Benzodiazepine Receptors Using [11C]PBR28 in HIV-Seropositive Patients With (MCMD)

NCT00459693
View directory record Official record
Conditions
HIV-Dementia, HIV-Associated Cognitive Motor Complex, AIDS Encephalopathy, AIDS Dementia Complex, AIDS-Related Dementia Complex, HIV Infections, Healthy
Interventions
[11C]PBR28
Drug
Lead sponsor
National Institute of Mental Health (NIMH)
NIH
Eligibility
18 Years to 50 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2014
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 9, 2020 · Synced Jul 22, 2026, 4:52 AM EDT
Completed Not applicable Interventional

Toxoplasmic Encephalitis in Patients With AIDS. Treatment and Prevention of Relapse

NCT00002064
View directory record Official record
Conditions
Toxoplasmosis, Cerebral, HIV Infections
Interventions
Pyrimethamine, Clindamycin
Drug
Lead sponsor
Palo Alto Medical Foundation
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
1
States / cities
Palo Alto, California
Source: ClinicalTrials.gov public record
Updated Jun 23, 2005 · Synced Jul 22, 2026, 4:52 AM EDT
Completed Phase 2 Interventional

Comparison of Anti HIV Drugs Used Alone or in Combination With Cytosine Arabinoside to Treat Progressive Multifocal Leukoencephalopathy (PML) in HIV-Infected Patients

NCT00001048
View directory record Official record
Conditions
HIV Infections, Leukoencephalopathy, Progressive Multifocal
Interventions
Filgrastim, Cytarabine, Zidovudine, Zalcitabine, Didanosine
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 65 Years
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 1997
U.S. locations
9
States / cities
Aurora, Colorado • Miami, Florida • Chicago, Illinois + 6 more
Source: ClinicalTrials.gov public record
Updated Oct 31, 2021 · Synced Jul 22, 2026, 4:52 AM EDT
Completed Not applicable Interventional

A Study of ddI in Patients With AIDS Who Become Sicker While Taking Zidovudine

NCT00002274
View directory record Official record
Conditions
HIV Infections, Leukoencephalopathy, Progressive Multifocal
Interventions
Didanosine
Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
12 Years and older
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
1
States / cities
Princeton, New Jersey
Source: ClinicalTrials.gov public record
Updated Oct 1, 2007 · Synced Jul 22, 2026, 4:52 AM EDT
Terminated Phase 1Phase 2 Interventional Results available

Study to Explore the Effect of Mefloquine in Participants With Progressive Multifocal Leukoencephalopathy (PML)

NCT00746941
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 Jul 22, 2026, 4:52 AM EDT
Completed Not applicable Interventional

A Pilot Study of the Efficacy of Recombinant Alpha Interferon (IFN-A2b) and Zidovudine (AZT) in the Treatment of Progressive Multifocal Leukoencephalopathy (PML) Complicating HIV-1 Infection

NCT00002270
View directory record Official record
Conditions
HIV Infections, Leukoencephalopathy, Progressive Multifocal
Interventions
Interferon alfa-2b, Zidovudine
Drug
Lead sponsor
University of Miami
Other
Eligibility
18 Years to 65 Years
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Jun 23, 2005 · Synced Jul 22, 2026, 4:52 AM EDT
Completed Not applicable Interventional

A Study to Evaluate the Use of Cidofovir (an Experimental Drug) for the Treatment of Progressive Multifocal Leukoencephalopathy (PML) in AIDS Patients

NCT00000945
View directory record Official record
Conditions
HIV Infections, Leukoencephalopathy, Progressive Multifocal
Interventions
Cidofovir, Probenecid
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 2001
U.S. locations
19
States / cities
Birmingham, Alabama • San Francisco, California • Denver, Colorado + 10 more
Source: ClinicalTrials.gov public record
Updated Oct 28, 2021 · Synced Jul 22, 2026, 4:52 AM EDT
Completed Phase 2 Interventional

Phase II Randomized Open-Label Trial of Atovaquone Plus Pyrimethamine and Atovaquone Plus Sulfadiazine for the Treatment of Acute Toxoplasmic Encephalitis

NCT00000794
View directory record Official record
Conditions
Toxoplasmosis, Cerebral, HIV Infections
Interventions
Sulfadiazine, Clarithromycin, Atovaquone, Pyrimethamine, Leucovorin calcium
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
13 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 1998
U.S. locations
16
States / cities
Los Angeles, California • Miami, Florida • Honolulu, Hawaii + 8 more
Source: ClinicalTrials.gov public record
Updated Oct 27, 2021 · Synced Jul 22, 2026, 4:52 AM EDT
Completed Not applicable Interventional

A Pilot Study of 566C80 for the Salvage Treatment of Toxoplasmic Encephalitis in Patients Infected With the Human Immunodeficiency Virus (HIV) Who Have Failed or Are Intolerant of Pyrimethamine-Sulfadiazine

NCT00001994
View directory record Official record
Conditions
Toxoplasmosis, Cerebral, HIV Infections
Interventions
Atovaquone
Drug
Lead sponsor
Glaxo Wellcome
Industry
Eligibility
13 Years and older
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
18
States / cities
Los Angeles, California • Oakland, California • San Francisco, California + 10 more
Source: ClinicalTrials.gov public record
Updated Jun 23, 2005 · Synced Jul 22, 2026, 4:52 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Natural History Study of Progressive Multifocal Leukoencephalopathy (PML)

NCT01730131
View directory record Official record
Conditions
Progressive Multifocal Leukoencephalopathy
Interventions
Not listed
Lead sponsor
National Institute of Neurological Disorders and Stroke (NINDS)
NIH
Eligibility
2 Years to 120 Years
Enrollment
700 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2012
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 16, 2026 · Synced Jul 22, 2026, 4:52 AM EDT