Reactogenicity and Immunogenicity of Vaginal CNgp140

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

Get a concise snapshot of the trial, including recruitment status, study phase, enrollment targets, and key timeline milestones.

Recruitment Status

TERMINATED

Clinical Phase

PHASE1

Total Enrollment

23 participants

Study Classification

INTERVENTIONAL

Study Start Date

2007-09-30

Study Completion Date

2009-01-31

Brief Summary

Review the sponsor-provided synopsis that highlights what the study is about and why it is being conducted.

To determine the local (cervico-vaginal) and systemic (whole body) safety of vaginal immunisation with CN54gp140 glycoprotein administered 9 times over a 3 week period.

Related Clinical Trials

Explore similar clinical trials based on study characteristics and research focus.

Immunogenicity Study of Vacc-4x Versus Placebo in Patients Infected With HIV

NCT00659789

HIV I Infection

COMPLETED PHASE2

The Safety and Immunogenicity of a Potential HIV Vaccine

NCT01966900

HIV Infections

COMPLETED PHASE1

A Phase I Study of the Safety and Immunogenicity of Rgp 120/HIV-1IIIB Vaccine in HIV-1 Seropositive Adult Volunteers

NCT00001992

HIV Infections

COMPLETED PHASE1

A Phase I/II Trial of Vaccine Therapy of HIV-1 Infected Individuals With 50-500 CD4 Cells/mm3

NCT00000755

HIV Infections

COMPLETED PHASE1

Evaluation of Safety, Immunogenicity and Efficacy of a Triple Immune Regimen in Adults Initiated on ART During Acute HIV-1

NCT06071767

HIV-1-infection

RECRUITING PHASE1/PHASE2

Detailed Description

Dive into the extended narrative that explains the scientific background, objectives, and procedures in greater depth.

This randomised, placebo-controlled, double-blind study will primarily assess the local and systemic safety and tolerability of CN54gp140 vaccine. We will also assess whether CN54gp140 vaccine is effective at inducing systemic and/or local specific immune responses.

Thirty healthy women volunteers will be enrolled in this study, at 2 clinical sites. Twenty will receive active CN54gp140 vaccine, and 10 will receive placebo. The placebo group will help us identify side effects caused by CN54gp140. The study is double-blind to eliminate any possibility of researcher or subject bias.

Before administration, CN54gp140 or placebo will be mixed into an aqueous gel vehicle. The treatments will be administered intravaginally in a regimen of 9 immunisations over 3 weeks. Each immunisation of CN54gp140 vaccine will contain 100 µg of CN54gp140 protein, meaning that a total dose of 900 µg will be given to subjects in the active treatment group.

Subjects will be required to make a total of 15 outpatient visits to their local clinical site, over 4 successive menstrual cycles.

Menstrual cycle 1: Screening visits There will be 2 screening visits, at about 4 and 2 weeks before the first immunisation. During these visits the volunteers will be asked questions about their health history and to give permission for us to contact their General Practitioner. Blood and urine samples will be taken for routine laboratory safety tests, and tests for HIV and hepatitis, sexual health, and pregnancy. Blood will also be collected for immunology tests to establish the pre-immunisation state of the immune system. The volunteers will also have a cervico-vaginal examination, and sampling of cervico-vaginal secretions and cells will be done for immunology tests. A photograph of the cervix will be taken to help identify any changes that might occur during the trial. Also, a full medical history and examination will be done.

The volunteers will be given a diary card to take home. They'll be asked to record in the diary any symptoms they have, and medication they take, during the course of the trial. The diaries be regularly checked by the trial staff, who will also make a symptom enquiry at each visit.

Menstrual cycle 2: Immunisation visits There will be 9 immunisation visits, on successive Mondays, Wednesdays and Fridays. The 1st of these visits will be about 7 days after the start of menses. At the 1st, 4th and 9th immunisation visits, blood and urine will be collected for routine laboratory safety and pregnancy tests, and blood collected for immunology tests. Subjects will also have a cervico-vaginal examination, and their temperature, blood pressure and heart rate measured, before self-administering the vaccine.

At the rest of the immunisation visits, subjects will self-administer the vaccine. No other procedures will be done.

Menstrual cycle 3: Sampling visits There will be 3 sampling visits, at about 9, 14 and 21 days after the start of menses. At each visit, subjects will have a cervico-vaginal examination, during which sampling of secretions and cells will be done for immunology tests. Also, blood will be collected for immunology tests, and subjects will have their temperature, blood pressure and heart rate measured. At the 1st and 3rd sampling visits only, blood and urine will be collected for routine laboratory safety tests also.

Menstrual cycle 4: End-of-study visit This visit will be about 10 days after the start of menses. Blood and urine will be collected for routine laboratory safety and pregnancy tests, tests for HIV, and immunology tests. The volunteers will also have a cervico-vaginal examination, during which sampling of secretions and cells will be done for immunology tests, and a full medical examination. A photograph of the cervix will be taken. This visit concludes the subject's participation in the study.

Conditions

See the medical conditions and disease areas that this research is targeting or investigating.

HIV Infections Acquired Immune Deficiency Syndrome

Study Design

Understand how the trial is structured, including allocation methods, masking strategies, primary purpose, and other design elements.

Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

PREVENTION

Blinding Strategy

TRIPLE

Participants Caregivers Investigators

Study Groups

Review each arm or cohort in the study, along with the interventions and objectives associated with them.

Active product

CN54gp140 + gel

Group Type EXPERIMENTAL

HIV glycoprotein CN54gp140 (vaccine)

Intervention Type BIOLOGICAL

vaginal immunisation with 100ug CN54gp140 antigen in gel on 9 occasions in one menstrual cycle

Gel alone

Group Type PLACEBO_COMPARATOR

Carbopol 974

Intervention Type BIOLOGICAL

vaginal immunisation with Carbopol 974 P 0.924%; benzyl alcohol 1.09%; sodium hydroxide 0.176%; and purified water 97.81%. alone on 9 occasions in one menstrual cycle

Interventions

Learn about the drugs, procedures, or behavioral strategies being tested and how they are applied within this trial.

HIV glycoprotein CN54gp140 (vaccine)

vaginal immunisation with 100ug CN54gp140 antigen in gel on 9 occasions in one menstrual cycle

Intervention Type BIOLOGICAL

Carbopol 974

vaginal immunisation with Carbopol 974 P 0.924%; benzyl alcohol 1.09%; sodium hydroxide 0.176%; and purified water 97.81%. alone on 9 occasions in one menstrual cycle

Intervention Type BIOLOGICAL

Other Intervention Names

Discover alternative or legacy names that may be used to describe the listed interventions across different sources.

Previously designated ZM96gp140 Carbapol gel

Eligibility Criteria

Check the participation requirements, including inclusion and exclusion rules, age limits, and whether healthy volunteers are accepted.

Inclusion Criteria

* They are adult female volunteers, 18 to 45 years of age, who have signed an informed consent form following a detailed written explanation of participation in the protocol.
* They are volunteers who are in good health as determined by medical history, physical examination and clinical judgement.
* They are available for the duration of the study.
* They are women who, if capable of becoming pregnant during the study, have agreed to have a pregnancy test immediately before immunisation, and to use appropriate contraception methods during the whole study period. Appropriate contraception shall include physician-prescribed oral hormonal agents, barrier contraceptives, regular and consistent use of condoms without spermicidal agents, or intrauterine devices only. Progesterone-only contraceptives are not suitable due to the lack of a regular menstrual cycle.
* They have agreed not to undertake any vaginal practices other than receptive intercourse with a male or use of sanitary tampons during menses. Use of condoms without spermicidal agents is encouraged.
* They have not donated blood during 3 months prior to study entry and agree to not donate for 3 months after the end of their participation in the study.

Exclusion Criteria

* They have hypersensitivity to any component of the vaccine used in this study.
* They are found to be HIV antibody or HIV proviral DNA positive at the time of initial screening.
* They have a known or suspected history of cervico-vaginal disease, malignancy or abnormality discovered at time of screening.
* They present in the samples obtained at the screening visit:
* a clinically significant amount of protein or haemoglobin in the urine sample, determined by urine dipstick.
* a clinically significant abnormality in the haematological or biochemical assays.
* Positive tests for Hepatitis B and/or C infection An abnormal value will be defined by the ranges quoted by The Doctors Laboratory for the Vaccine Institute site and Pathology Department, York Hospital for the York site.
* They have a known or suspected impairment of lung, heart, liver, kidney, diseases, blood disorders or immune dysfunction.
* They are receiving immunosuppressive therapy (including systemic steroids).
* They are receiving any medications via vaginal route.
* They have any acute infections (including fever greater than or equal to 38°C) or any chronic disease.
* They present a current problem with substance abuse or with a history of substance abuse which, in the opinion of the investigator, might interfere with participation in the study.
* They have any condition which, in the opinion of the investigator, might interfere with the evaluation of the study objectives.
* They have received an investigational agent within 3 months prior to study entry.
* They cannot speak fluent English, or are planning to leave the area of the study site prior to the end of the study period, or are likely not to complete the study.

Minimum Eligible Age

18 Years

Maximum Eligible Age

45 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

Yes