HIV InfectionsPhase 1NCT00000675
A Phase I Study of the Safety and Pharmacokinetics of Recombinant Human CD4 Immunoglobulin (rCd4-IgG) Administered by Intravenous Bolus in Patients With AIDS and AIDS Related Complex
A Phase 1 study testing CD4-IgG in people with HIV Infections, run by National Institute of Allergy and Infectious Diseases (NIAID) at 2 sites in United States.
Trial summary
To study the safety and pharmacokinetics (blood levels) of recombinant human CD4 immunoglobulin (rCd4-IgG) in patients with AIDS or AIDS related complex (ARC) who have failed or declined therapy with zidovudine (AZT). Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- HIV Infections
- What is being tested?
- CD4-IgG
- How many people
- 60 participants
- Where
- 2 sitesUnited States
- Study dates
- Start not givento not given
- Phase
- Phase 1
- 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 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Patients must fulfill the following criteria:
- Diagnosis of AIDS or AIDS-related complex, according to CDC criteria, in previously documented HIV seropositive individuals.
- Failure to tolerate or respond to zidovudine (AZT) therapy for HIV infection or a decision to decline such therapy.
- Willingness to abstain from all other experimental therapy for HIV infection during study period.
- Life expectancy of at least 3 months.
- Patients must be able to sign a written informed consent form.
Who cannot join
- Co-existing Condition:
- Patients with the following are excluded:
- Serious active opportunistic infection or malignancies not specifically allowed.
- Concurrent Medication:
- Excluded:
- Oral or intravenous acyclovir for herpes.
Show all 21Show fewer
- Zidovudine (AZT).
- Interferon.
- Corticosteroids.
- Nonsteroidal anti-inflammatory agents (NSAIDS).
- Intravenous acyclovir.
- Other known immunomodulatory agents.
- Other experimental therapy.
- Patients with the following are excluded:
- Serious active opportunistic infection or malignancies not specifically allowed.
- Prior Medication:
- Excluded within 4 weeks of study entry:
- Zidovudine (AZT).
- Chemotherapy.
- Immunomodulatory agents.
- Other experimental therapy.
Trial locations and contacts
2 sites in 1 country.
United States2 sites
Univ of Washington
Seattle, Washington, 98105
Stanford Univ School of Medicine
Stanford, California, 94305
About this study
To study the safety and pharmacokinetics (blood levels) of recombinant human CD4 immunoglobulin (rCd4-IgG) in patients with AIDS or AIDS related complex (ARC) who have failed or declined therapy with zidovudine (AZT). An additional goal of the study is to obtain a preliminary indication of the antiviral effects of Cd4-IgG in patients with AIDS or ARC.
Other approaches in addition to existing treatment of HIV infection need to be evaluated. One approach may be to block HIV infection by interrupting the assembly of the virus within the cell or the budding of virus from the membrane of the infected cell. In addition, blocking the attachment of HIV to its cellular receptor may offer another point of attack. HIV binds to the CD4 receptor on the target T4 lymphocyte and the envelope glycoprotein of the virus (gp120) is capable of high affinity binding to CD4. Any agent that prevents the attachment of gp120 to the CD4 receptor should be able to block virus transmission and spread. Recently, scientists have succeeded in producing highly purified recombinant soluble human CD4. Recombinant CD4 is capable of binding to HIV envelope protein (gp120) and inhibiting HIV infectivity in test tube studies. Potential therapeutic benefit in patients with HIV infection could be derived from either or both of these biologic effects. In order to extend the length of time that rCD4 stays in the body, the compound has been modified by combining it with a human immunoglobulin of the IgG1 class (IgG).
Read the detailed description
Other approaches in addition to existing treatment of HIV infection need to be evaluated. One approach may be to block HIV infection by interrupting the assembly of the virus within the cell or the budding of virus from the membrane of the infected cell. In addition, blocking the attachment of HIV to its cellular receptor may offer another point of attack. HIV binds to the CD4 receptor on the target T4 lymphocyte and the envelope glycoprotein of the virus (gp120) is capable of high affinity binding to CD4. Any agent that prevents the attachment of gp120 to the CD4 receptor should be able to block virus transmission and spread. Recently, scientists have succeeded in producing highly purified recombinant soluble human CD4. Recombinant CD4 is capable of binding to HIV envelope protein (gp120) and inhibiting HIV infectivity in test tube studies. Potential therapeutic benefit in patients with HIV infection could be derived from either or both of these biologic effects. In order to extend the length of time that rCD4 stays in the body, the compound has been modified by combining it with a human immunoglobulin of the IgG1 class (IgG).
Each patient receives rCd4-IgG at a fixed dose level once weekly by intravenous bolus for 12 weeks. Four patients (two per center) are entered at each dose level starting with the lowest dose. Dose escalation proceeds until a maximum tolerated dose (MTD) is defined. AMENDED: Includes, as of 891201, an ancillary study entitled "A Study of Recombinant CD4-Immunoglobulin G (CD4-IgG) Levels in Cerebral Spinal Fluid after rCD4-IgG is Administered by Intravenous Bolus in Patients With AIDS and AIDS-Related Complex". This involves selected patients, at the discretion of the Investigator. AMENDED: 900110 To increase the dose and frequency of administration of rCD4-IgG, based on preliminary results of pharmacokinetic analyses from Phase I studies in humans. Each patient receives rCD4-IgG therapy at a fixed dose level 1x, 2x, or 3x weekly by intravenous bolus for 12 weeks. Follow-up is extended to 8 weeks. Total target accrual is 25 - 28 weeks. AMENDED: 900824 Extension of the Phase I study of the safety and efficacy of CD4-IgG in patients with HIV infection. Each patient receives one of two fixed doses by IV bolus injection twice per week for 12 weeks. 20 to 30 patients to be enrolled. Pharmacokinetics will be evaluated. Clinical safety and antiviral effects will be assayed.
- Conditions
- HIV Infections
- Being tested
- CD4-IgG
- Keywords
- Recombinant Proteins, IgG, Drug Evaluation, Acquired Immunodeficiency Syndrome, Antigens, CD4, AIDS-Related Complex, Carrier Proteins
- Medical subject headings
- HIV Infections, Acquired Immunodeficiency Syndrome, AIDS-Related Complex
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
CD4-IgGDrug
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)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (2)Papers the sponsor has linked to this study.
- Other trials for HIV InfectionsStudies 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 1
- Primary purpose
- Treatment
- Enrolment
- 60 participants
Sponsor and investigators
- Sponsor type
- US National Institutes of Health
- Collaborators
- Genentech, Inc.
- Investigators
- L Corey, Study chairA Collier, Study chair
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00000675
- Sponsor's protocol ID
- ACTG 121
- Other IDs
- DO136g
- Status last verified
- Jan 1991
- First submitted
- 2 Nov 1999
- Last updated
- 24 Jun 2005
- Results posted
- No
Publications
Collier AC, Coombs RW, Katzenstein D, Holodniy M, Gibson J, Mordenti J, Izu AE, Duliege AM, Ammann AJ, Merigan T, et al. Safety, pharmacokinetics, and antiviral response of CD4-immunoglobulin G by intravenous bolus in AIDS and AIDS-related complex. J Acquir Immune Defic Syndr Hum Retrovirol. 1995 Oct 1;10(2):150-6. doi: 10.1097/00042560-199510020-00006.
PubMed 7552478Collier A, Katzenstein D, Coombs R, Holodniy M, Mordenti J, Arditti D, Ammann A, Merigan T, Corey L. Safety and pharmacokinetics of intravenous recombinant CD4 immunoadhesin (RCD4-IGG) (AIDS Clinical Trials Group Protocol 121). Int Conf AIDS. 1990 Jun 20-23;6(3):206 (abstract no SB480)
Study at a glance
From the registry record, last updated by the sponsor on 24 Jun 2005. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Phase I Study of the Safety and Pharmacokinetics of Recombinant Human CD4 Immunoglobulin (rCd4-IgG) Administered by Intravenous Bolus in Patients With AIDS and AIDS Related Complex
- ClinicalTrials.gov ID
- NCT00000675
- Acronym / sponsor ID
- ACTG 121
- Conditions
- HIV Infections
- Keywords
- Recombinant Proteins, IgG, Drug Evaluation, Acquired Immunodeficiency Syndrome, Antigens, CD4, AIDS-Related Complex, Carrier Proteins
- Phase
- Phase 1
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 60 participants
- Lead sponsor
- National Institute of Allergy and Infectious Diseases (NIAID)US National Institutes of Health
- Collaborators
- Genentech, Inc.
- 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 study the safety and pharmacokinetics (blood levels) of recombinant human CD4 immunoglobulin (rCd4-IgG) in patients with AIDS or AIDS related complex (ARC) who have failed or declined therapy with zidovudine (AZT). An additional goal of the study is to obtain a preliminary indication of the antiviral effects of Cd4-IgG in patients with AIDS or ARC.
Other approaches in addition to existing treatment of HIV infection need to be evaluated. One approach may be to block HIV infection by interrupting the assembly of the virus within the cell or the budding of virus from the membrane of the infected cell. In addition, blocking the attachment of HIV to its cellular receptor may offer another point of attack. HIV binds to the CD4 receptor on the target T4 lymphocyte and the envelope glycoprotein of the virus (gp120) is capable of high affinity binding to CD4. Any agent that prevents the attachment of gp120 to the CD4 receptor should be able to block virus transmission and spread. Recently, scientists have succeeded in producing highly purified recombinant soluble human CD4. Recombinant CD4 is capable of binding to HIV envelope protein (gp120) and inhibiting HIV infectivity in test tube studies. Potential therapeutic benefit in patients with HIV infection could be derived from either or both of these biologic effects. In order to extend the length of time that rCD4 stays in the body, the compound has been modified by combining it with a human immunoglobulin of the IgG1 class (IgG).
Detailed description
Other approaches in addition to existing treatment of HIV infection need to be evaluated. One approach may be to block HIV infection by interrupting the assembly of the virus within the cell or the budding of virus from the membrane of the infected cell. In addition, blocking the attachment of HIV to its cellular receptor may offer another point of attack. HIV binds to the CD4 receptor on the target T4 lymphocyte and the envelope glycoprotein of the virus (gp120) is capable of high affinity binding to CD4. Any agent that prevents the attachment of gp120 to the CD4 receptor should be able to block virus transmission and spread. Recently, scientists have succeeded in producing highly purified recombinant soluble human CD4. Recombinant CD4 is capable of binding to HIV envelope protein (gp120) and inhibiting HIV infectivity in test tube studies. Potential therapeutic benefit in patients with HIV infection could be derived from either or both of these biologic effects. In order to extend the length of time that rCD4 stays in the body, the compound has been modified by combining it with a human immunoglobulin of the IgG1 class (IgG).
Each patient receives rCd4-IgG at a fixed dose level once weekly by intravenous bolus for 12 weeks. Four patients (two per center) are entered at each dose level starting with the lowest dose. Dose escalation proceeds until a maximum tolerated dose (MTD) is defined. AMENDED: Includes, as of 891201, an ancillary study entitled "A Study of Recombinant CD4-Immunoglobulin G (CD4-IgG) Levels in Cerebral Spinal Fluid after rCD4-IgG is Administered by Intravenous Bolus in Patients With AIDS and AIDS-Related Complex". This involves selected patients, at the discretion of the Investigator. AMENDED: 900110 To increase the dose and frequency of administration of rCD4-IgG, based on preliminary results of pharmacokinetic analyses from Phase I studies in humans. Each patient receives rCD4-IgG therapy at a fixed dose level 1x, 2x, or 3x weekly by intravenous bolus for 12 weeks. Follow-up is extended to 8 weeks. Total target accrual is 25 - 28 weeks. AMENDED: 900824 Extension of the Phase I study of the safety and efficacy of CD4-IgG in patients with HIV infection. Each patient receives one of two fixed doses by IV bolus injection twice per week for 12 weeks. 20 to 30 patients to be enrolled. Pharmacokinetics will be evaluated. Clinical safety and antiviral effects will be assayed.
Study design
- Primary purpose
- Treatment
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (6 listed)
- Diagnosis of AIDS or AIDS-related complex, according to CDC criteria, in previously documented HIV seropositive individuals.
- Failure to tolerate or respond to zidovudine (AZT) therapy for HIV infection or a decision to decline such therapy.
- Willingness to abstain from all other experimental therapy for HIV infection during study period.
- Life expectancy of at least 3 months.
- Patients must be able to sign a written informed consent form.
Key exclusion criteria (21 listed)
- Serious active opportunistic infection or malignancies not specifically allowed.
- Oral or intravenous acyclovir for herpes.
- Zidovudine (AZT).
- Interferon.
- Corticosteroids.
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 |
|---|---|---|
| CD4-IgG | 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 24 Jun 2005.
- Background: PubMed 7552478Collier AC, Coombs RW, Katzenstein D, Holodniy M, Gibson J, Mordenti J, Izu AE, Duliege AM, Ammann AJ, Merigan T, et al. Safety, pharmacokinetics, and antiviral response of CD4-immunoglobulin G by intravenous bolus in AIDS and AIDS-related complex. J Acquir Immune Defic Syndr Hum Retrovirol. 1995 Oct 1;10(2):150-6. doi: 10.1097/00042560-199510020-00006.
- BackgroundCollier A, Katzenstein D, Coombs R, Holodniy M, Mordenti J, Arditti D, Ammann A, Merigan T, Corey L. Safety and pharmacokinetics of intravenous recombinant CD4 immunoadhesin (RCD4-IGG) (AIDS Clinical Trials Group Protocol 121). Int Conf AIDS. 1990 Jun 20-23;6(3):206 (abstract no SB480)
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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.
L Corey study chair
A Collier study chair
2 sites in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 1 study testing CD4-IgG in people with HIV Infections, run by National Institute of Allergy and Infectious Diseases (NIAID) at 2 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 6 inclusion and 21 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 24 Jun 2005. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 2 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 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.
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 NCT00000675, which also lists 2 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 24 Jun 2005.