Toxoplasmosis, CerebralPhase 2NCT00000643
Primary Prophylaxis of Cerebral Toxoplasmosis in HIV-Infected Patients
A Phase 2 study testing Pyrimethamine and Leucovorin calcium in people with Toxoplasmosis, Cerebral and HIV Infections, run by National Institute of Allergy and Infectious Diseases (NIAID) at 24 sites in United States.
Trial summary
To evaluate the effectiveness of pyrimethamine (given with leucovorin calcium versus placebo (an inactive substance) for the primary prophylaxis (prevention) of cerebral toxoplasmosis in HIV-infected patients. Read more about this study
- Who is it for?
- Ages 13 years and older
- Conditions the study is for
- Toxoplasmosis, Cerebral, HIV Infections
- What is being tested?
- Pyrimethamine and Leucovorin calcium
- How many people
- 150 participants
- Where
- 24 sitesUnited States
- Study dates
- Start not givento May 1994
- Phase
- Phase 2
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 13 years and older
- All sexes
- No healthy volunteers
- Child, Adult, Older adult
Who may be able to join
- Concurrent Medication:
- Allowed:
- Zidovudine (AZT), didanosine (ddI), dideoxycytidine (ddC), erythropoietin (Eprex), other agents granted Treatment IND or expanded access status.
- Investigational triazoles.
- Pentamidine for primary prophylaxis of Pneumocystis carinii pneumonia (PCP).
- Patients with the following are excluded:
Show all 13Show fewer
- History of cerebral toxoplasmosis or toxoplasmosis infection in any other organ or tissue.
- Focal neural abnormalities (except peripheral neuropathy) or mass lesions on a previous computerized tomography (CT) scan or magnetic resonance image (MRI), unless subsequent workup rules out toxoplasmosis, in which case abnormalities must have been stable for at least 2 months.
- Known or suspected allergy or severe intolerance to study drugs.
- Patients must have:
- Positive toxoplasma serology.
- HIV infection.
- Willingness and ability to comply with the protocol and capability of giving written informed consent.
Who cannot join
- Co-existing Condition:
- Patients with the following conditions or symptoms are excluded:
- Current diagnosis of cerebral toxoplasmosis or toxoplasmosis infection in any other organ or tissue.
- Known or suspected allergy or severe intolerance to study drugs.
- Concurrent Medication:
- Excluded:
- Anticoagulants. Other antifolates, sulfonamides, fansidar, macrolides, 5-fluorouracil, dapsone, or any other agent with known activity against Toxoplasma gondii.
Trial locations and contacts
24 sites in 1 country.
24 sites in 1 country
United States24 sites
Johns Hopkins Adult AIDS CRS
Baltimore, Maryland, 21287
Bmc Actg Crs
Boston, Massachusetts, 02118
SUNY - Buffalo, Erie County Medical Ctr.
Buffalo, New York, 14215
Unc Aids Crs
Chapel Hill, North Carolina, 27599
Northwestern University CRS
Chicago, Illinois, 60611
Rush Univ. Med. Ctr. ACTG CRS
Chicago, Illinois, 60611
Univ. of Cincinnati CRS
Cincinnati, Ohio, 45267
Case CRS
Cleveland, Ohio, 44106
Duke Univ. Med. Ctr. Adult CRS
Durham, North Carolina, 27710
Indiana Univ. School of Medicine, Infectious Disease Research Clinic
Indianapolis, Indiana, 46202
Univ. of Miami AIDS CRS
Miami, Florida, 33136
University of Minnesota, ACTU
Minneapolis, Minnesota, 55455
Tulane Med. Ctr. - Charity Hosp. of New Orleans, ACTU
New Orleans, Louisiana
Beth Israel Med. Ctr. (Mt. Sinai)
New York, New York, 10003
NY Univ. HIV/AIDS CRS
New York, New York, 10016
Cornell University A2201
New York, New York, 10021
Memorial Sloan-Kettering Cancer Ctr.
New York, New York, 10021
NJ Med. School CRS
Newark, New Jersey, 07103
Stanford CRS
Palo Alto, California, 94304
Pitt CRS
Pittsburgh, Pennsylvania, 15213
Univ. of Rochester ACTG CRS
Rochester, New York, 14642
St. Louis ConnectCare, Infectious Diseases Clinic
St Louis, Missouri
Washington U CRS
St Louis, Missouri
Harbor-UCLA Med. Ctr. CRS
Torrance, California, 90502
About this study
To evaluate the effectiveness of pyrimethamine (given with leucovorin calcium versus placebo (an inactive substance) for the primary prophylaxis (prevention) of cerebral toxoplasmosis in HIV-infected patients.
Cerebral toxoplasmosis is one of the most frequently encountered opportunistic infections in the course of AIDS. The mortality (death) rate is estimated to be greater than 50 percent. Pyrimethamine is a drug that appears promising for the primary prevention of cerebral toxoplasmosis in HIV-infected patients.
Read the detailed description
Cerebral toxoplasmosis is one of the most frequently encountered opportunistic infections in the course of AIDS. The mortality (death) rate is estimated to be greater than 50 percent. Pyrimethamine is a drug that appears promising for the primary prevention of cerebral toxoplasmosis in HIV-infected patients.
AMENDED: 04-04-91 On the first day of therapy, a loading dose is given. After the first day, patients take pyrimethamine or placebo 3 times a week. Patients also take leucovorin calcium orally three times weekly. Enrollment occurs over approximately 12 months. All patients are followed on study until a common study close-out date and final analysis of the study. It is anticipated that this common close-out will occur when the mean duration of time on study therapy will be 3 years (approximately in January, 1994).
ORIGINAL design: On the first day of treatment, patients receive a loading dose of pyrimethamine or placebo, plus of leucovorin calcium. After the first day, patients take pyrimethamine or placebo three times a week. Patients also take folinic acid orally three times weekly. The mean duration of study participation is 3 years.
- Conditions
- Toxoplasmosis, Cerebral, HIV Infections
- Being tested
- Pyrimethamine, Leucovorin calcium
- Keywords
- Toxoplasmosis, Pyrimethamine, Leucovorin, Drug Evaluation, Acquired Immunodeficiency Syndrome, AIDS-Related Complex, Brain Diseases
- Medical subject headings
- Toxoplasmosis, Cerebral, HIV Infections, Toxoplasmosis, Acquired Immunodeficiency Syndrome, AIDS-Related Complex, Brain Diseases
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
PyrimethamineDrug
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted31 Aug 2001 (estimated)
- Study completionMay 1994
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (7)Papers the sponsor has linked to this study.
- Other trials for Toxoplasmosis, CerebralStudies of the same condition, open and under way.
- More trials run by National Institute of Allergy and Infectious Diseases (NIAID)The sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 2
- Primary purpose
- Prevention
- Masking
- Double blind
- Enrolment
- 150 participants
Sponsor and investigators
- Sponsor type
- US National Institutes of Health
- Responsible party
- Sponsor
- Investigators
- BJ Luft, Study chairJL Vilde, Study chair
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00000643
- Sponsor's protocol ID
- ACTG 154
- Other IDs
- 11129
- Status last verified
- Oct 2021
- First submitted
- 2 Nov 1999
- Last updated
- 2 Nov 2021
- Results posted
- No
Publications
Rousseau F, Pueyo S, Morlat P, Hafner R, Chene G, Leport C, Luft BJ, Miro J, Aubertin J, Salamon R, Vilde JL. Increased risk of toxoplasmic encephalitis in human immunodeficiency virus-infected patients with pyrimethamine-related rash. ANRS 005-ACTG 154 Trial Group. Agence Nationale de Recherche sur le SIDA (ANRS-INSERM) and the NIAID-AIDS Clinical Trials Group. Clin Infect Dis. 1997 Mar;24(3):396-402. doi: 10.1093/clinids/24.3.396.
PubMed 9114191Leport C, Chene G, Farinotti R, Ecobichon J-L, Petavin G, Sagardoy G, Morlat P, Hafner R, Luft B, Salamon R, Vilde J-L. Determination of pyrimethamine serum levels in a primary prophylaxis trial for toxoplasmic encephalitis. Conf Retroviruses Opportunistic Infect. 1996 Jan 28-Feb 1;3rd:159
Leport C, Chene G, Morlat P, Luft BJ, Rousseau F, Pueyo S, Hafner R, Miro J, Aubertin J, Salamon R, Vilde JL. Pyrimethamine for primary prophylaxis of toxoplasmic encephalitis in patients with human immunodeficiency virus infection: a double-blind, randomized trial. ANRS 005-ACTG 154 Group Members. Agence Nationale de Recherche sur le SIDA. AIDS Clinical Trial Group. J Infect Dis. 1996 Jan;173(1):91-7. doi: 10.1093/infdis/173.1.91.
PubMed 8537688Pueyo S, Salmi LR, Chene G, Leport C, Morlat P, Dequae L, Gregoire V, Hafner R, Vilde JL, Luft BJ, Aubertin J, Salamon R. Survival after AIDS-defining events in patients with < 200 lymphocytes CD4+ x 10(6)/L who are toxoplasmosis antibody positive. ANRS 005/ACTG 154 Trial Group. J Acquir Immune Defic Syndr Hum Retrovirol. 1997 Apr 15;14(5):459-64. doi: 10.1097/00042560-199704150-00010.
PubMed 9170421Derouin F, Leport C, Pueyo S, Morlat P, Letrillart B, Chene G, Ecobichon JL, Luft B, Aubertin J, Hafner R, Vilde JL, Salamon R. Predictive value of Toxoplasma gondii antibody titres on the occurrence of toxoplasmic encephalitis in HIV-infected patients. ANRS 005/ACTG 154 Trial Group. AIDS. 1996 Nov;10(13):1521-7. doi: 10.1097/00002030-199611000-00010.
PubMed 8931787Chene G, Morlat P, Hafner R, Aboulker JP, Luft B, Dormont J, Vilde JL, Salamon R. Intent-to-treat versus on treatment analysis: how to interpret the results of a clinical trial? Experience from ANRS 005/ACTG 154 study. Natl Conf Hum Retroviruses Relat Infect (1st). 1993 Dec 12-16:100
Chene G, Morlat P, Leport C, Hafner R, Dequae L, Charreau I, Aboulker JP, Luft B, Aubertin J, Vilde JL, Salamon R. Intention-to-treat vs. on-treatment analyses of clinical trial data: experience from a study of pyrimethamine in the primary prophylaxis of toxoplasmosis in HIV-infected patients. ANRS 005/ACTG 154 Trial Group. Control Clin Trials. 1998 Jun;19(3):233-48. doi: 10.1016/s0197-2456(97)00145-1.
PubMed 9620807
Study at a glance
From the registry record, last updated by the sponsor on 2 Nov 2021. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Primary Prophylaxis of Cerebral Toxoplasmosis in HIV-Infected Patients
- ClinicalTrials.gov ID
- NCT00000643
- Acronym / sponsor ID
- ACTG 154
- Conditions
- Toxoplasmosis, Cerebral, HIV Infections
- Keywords
- Toxoplasmosis, Pyrimethamine, Leucovorin, Drug Evaluation, Acquired Immunodeficiency Syndrome, AIDS-Related Complex, Brain Diseases
- Phase
- Phase 2
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 150 participants
- Lead sponsor
- National Institute of Allergy and Infectious Diseases (NIAID)US National Institutes of Health
- Study completion
- May 1994 (actual)
- First posted
- 31 Aug 2001 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
To evaluate the effectiveness of pyrimethamine (given with leucovorin calcium versus placebo (an inactive substance) for the primary prophylaxis (prevention) of cerebral toxoplasmosis in HIV-infected patients.
Cerebral toxoplasmosis is one of the most frequently encountered opportunistic infections in the course of AIDS. The mortality (death) rate is estimated to be greater than 50 percent. Pyrimethamine is a drug that appears promising for the primary prevention of cerebral toxoplasmosis in HIV-infected patients.
Detailed description
Cerebral toxoplasmosis is one of the most frequently encountered opportunistic infections in the course of AIDS. The mortality (death) rate is estimated to be greater than 50 percent. Pyrimethamine is a drug that appears promising for the primary prevention of cerebral toxoplasmosis in HIV-infected patients.
AMENDED: 04-04-91 On the first day of therapy, a loading dose is given. After the first day, patients take pyrimethamine or placebo 3 times a week. Patients also take leucovorin calcium orally three times weekly. Enrollment occurs over approximately 12 months. All patients are followed on study until a common study close-out date and final analysis of the study. It is anticipated that this common close-out will occur when the mean duration of time on study therapy will be 3 years (approximately in January, 1994).
ORIGINAL design: On the first day of treatment, patients receive a loading dose of pyrimethamine or placebo, plus of leucovorin calcium. After the first day, patients take pyrimethamine or placebo three times a week. Patients also take folinic acid orally three times weekly. The mean duration of study participation is 3 years.
Study design
- Primary purpose
- Prevention
- Masking
- Double blind
Who may qualify
- Ages
- 13 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Child, Adult, Older adult
Key inclusion criteria (13 listed)
- Zidovudine (AZT), didanosine (ddI), dideoxycytidine (ddC), erythropoietin (Eprex), other agents granted Treatment IND or expanded access status.
- Investigational triazoles.
- Pentamidine for primary prophylaxis of Pneumocystis carinii pneumonia (PCP).
- History of cerebral toxoplasmosis or toxoplasmosis infection in any other organ or tissue.
- Focal neural abnormalities (except peripheral neuropathy) or mass lesions on a previous computerized tomography (CT) scan or magnetic resonance image (MRI), unless subsequent workup rules out toxoplasmosis, in which case abnormalities must have been stable for at least 2 months.
Key exclusion criteria (7 listed)
- Current diagnosis of cerebral toxoplasmosis or toxoplasmosis infection in any other organ or tissue.
- Known or suspected allergy or severe intolerance to study drugs.
- Anticoagulants. Other antifolates, sulfonamides, fansidar, macrolides, 5-fluorouracil, dapsone, or any other agent with known activity against Toxoplasma gondii.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Pyrimethamine | Drug | – |
| Leucovorin calcium | Drug | – |
Primary outcome
Not reported in the source record.
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 2 Nov 2021.
- Background: PubMed 9114191Rousseau F, Pueyo S, Morlat P, Hafner R, Chene G, Leport C, Luft BJ, Miro J, Aubertin J, Salamon R, Vilde JL. Increased risk of toxoplasmic encephalitis in human immunodeficiency virus-infected patients with pyrimethamine-related rash. ANRS 005-ACTG 154 Trial Group. Agence Nationale de Recherche sur le SIDA (ANRS-INSERM) and the NIAID-AIDS Clinical Trials Group. Clin Infect Dis. 1997 Mar;24(3):396-402. doi: 10.1093/clinids/24.3.396.
- BackgroundLeport C, Chene G, Farinotti R, Ecobichon J-L, Petavin G, Sagardoy G, Morlat P, Hafner R, Luft B, Salamon R, Vilde J-L. Determination of pyrimethamine serum levels in a primary prophylaxis trial for toxoplasmic encephalitis. Conf Retroviruses Opportunistic Infect. 1996 Jan 28-Feb 1;3rd:159
- Background: PubMed 8537688Leport C, Chene G, Morlat P, Luft BJ, Rousseau F, Pueyo S, Hafner R, Miro J, Aubertin J, Salamon R, Vilde JL. Pyrimethamine for primary prophylaxis of toxoplasmic encephalitis in patients with human immunodeficiency virus infection: a double-blind, randomized trial. ANRS 005-ACTG 154 Group Members. Agence Nationale de Recherche sur le SIDA. AIDS Clinical Trial Group. J Infect Dis. 1996 Jan;173(1):91-7. doi: 10.1093/infdis/173.1.91.
- Background: PubMed 9170421Pueyo S, Salmi LR, Chene G, Leport C, Morlat P, Dequae L, Gregoire V, Hafner R, Vilde JL, Luft BJ, Aubertin J, Salamon R. Survival after AIDS-defining events in patients with < 200 lymphocytes CD4+ x 10(6)/L who are toxoplasmosis antibody positive. ANRS 005/ACTG 154 Trial Group. J Acquir Immune Defic Syndr Hum Retrovirol. 1997 Apr 15;14(5):459-64. doi: 10.1097/00042560-199704150-00010.
- Background: PubMed 8931787Derouin F, Leport C, Pueyo S, Morlat P, Letrillart B, Chene G, Ecobichon JL, Luft B, Aubertin J, Hafner R, Vilde JL, Salamon R. Predictive value of Toxoplasma gondii antibody titres on the occurrence of toxoplasmic encephalitis in HIV-infected patients. ANRS 005/ACTG 154 Trial Group. AIDS. 1996 Nov;10(13):1521-7. doi: 10.1097/00002030-199611000-00010.
- BackgroundChene G, Morlat P, Hafner R, Aboulker JP, Luft B, Dormont J, Vilde JL, Salamon R. Intent-to-treat versus on treatment analysis: how to interpret the results of a clinical trial? Experience from ANRS 005/ACTG 154 study. Natl Conf Hum Retroviruses Relat Infect (1st). 1993 Dec 12-16:100
- Background: PubMed 9620807Chene G, Morlat P, Leport C, Hafner R, Dequae L, Charreau I, Aboulker JP, Luft B, Aubertin J, Vilde JL, Salamon R. Intention-to-treat vs. on-treatment analyses of clinical trial data: experience from a study of pyrimethamine in the primary prophylaxis of toxoplasmosis in HIV-infected patients. ANRS 005/ACTG 154 Trial Group. Control Clin Trials. 1998 Jun;19(3):233-48. doi: 10.1016/s0197-2456(97)00145-1.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
BJ Luft study chair
JL Vilde study chair
24 sites in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 2 study testing Pyrimethamine and Leucovorin calcium in people with Toxoplasmosis, Cerebral and HIV Infections, run by National Institute of Allergy and Infectious Diseases (NIAID) at 24 sites in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 13 inclusion and 7 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 2 Nov 2021. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 24 sites in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT00000643, which also lists 7 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 2 Nov 2021; AzTrials last refreshed its copy on 8 Nov 2026.