Active Immunization of HIV-1 Infected, Pregnant Women With CD4 Lymphocyte Counts >= 400/mm3: A Phase I Study of Safety and Immunogenicity of VaxSyn Recombinant gp160 (NOTE: Some Patients Receive Placebo)

HIV Infections Clinical Trial

Official title:

Active Immunization of HIV-1 Infected, Pregnant Women With CD4 Lymphocyte Counts >= 400/mm3: A Phase I Study of Safety and Immunogenicity of VaxSyn Recombinant gp160 (NOTE: Some Patients Receive Placebo)

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT00000777
• Other study ID #: ACTG 234
• Secondary ID: VEU 10211211
• Status: Completed
• Phase: Phase 1
• Est. completion date: July 1998

Study information

• Verified date: October 2021
• Source: National Institute of Allergy and Infectious Diseases (NIAID)
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

To evaluate the safety of gp160 vaccine (VaxSyn) in HIV-1 infected pregnant women with CD4 counts >= 400 cells/mm3. To evaluate the immunogenicity of this vaccine in pregnant women and the passive acquisition of vaccine-specific antibody in their infants. Evidence suggests that an advanced stage of disease with high plasma viremia is associated with increased transmission of HIV-1 to the fetus. Slowing the progression of disease, reducing the titer of virus in plasma, and increasing the titer of epitope-specific antibody are potentially attainable goals through active immunization of the mother during pregnancy.

Description:

Evidence suggests that an advanced stage of disease with high plasma viremia is associated with increased transmission of HIV-1 to the fetus. Slowing the progression of disease, reducing the titer of virus in plasma, and increasing the titer of epitope-specific antibody are potentially attainable goals through active immunization of the mother during pregnancy. Pregnant women are randomized to receive an initial injection of VaxSyn or alum placebo between week 16 and week 24 of gestation, followed by monthly booster injections concluding at the end of pregnancy, for a total of five injections. Patients may have optional booster immunizations (vaccine or placebo) at 3, 6, 9, and 12 months after delivery. Mothers and infants are followed through 18 months after delivery.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 24
• Est. completion date: July 1998
• Accepts healthy volunteers: No
• Gender: Female
• Age group: 16 Years to 40 Years

Eligibility

Inclusion Criteria Concurrent Medication:

Allowed:

• AZT.
• Acyclovir.

Patients must have:

• HIV-1 infection.
• CD4 count >= 400 cells/mm3.
• No AIDS-defining illness or other systemic manifestations related to HIV (other than generalized lymphadenopathy).
• HIV p24 < 30 pg/ml.
• Proven pregnancy in the 16th to 24th week of gestation at study entry, with no special obstetrical risks.
• Concurrent AZT therapy is permitted. Exclusion Criteria Co-existing Condition:

Patients with the following symptoms and conditions are excluded:

• Known hypersensitivity to a component of the vaccine.
• Evidence of fetal abnormality on ultrasound.
• Evidence of maternal risk factors including insulin-dependent diabetes, moderate to severe hypertension, repeated fetal wastage (> 3), Rh-sensitization or other blood group alloimmunization, severe renal disease, previous infants with malformations or other factors that obstetrically are judged to constitute a special risk of spontaneous abortion or premature birth.
• Active syphilis.
• Hepatitis B surface antigen positive. Concurrent Medication:

Excluded:

• Antiretroviral or immunomodulating agent other than AZT during the pregnancy. Prior Medication:

Excluded:

• Antiretroviral or immunomodulating agent other than AZT within 90 days prior to study entry. Current use of illicit drugs or known chronic alcohol use.

Related Conditions & MeSH terms

• HIV Infections
• HIV Seronegativity
• Pregnancy

Intervention

Biological:
• gp160 Vaccine (MicroGeneSys)

Locations

Country	Name	City	State
United States	Vanderbilt Univ Hosp	Nashville	Tennessee
United States	Yale Univ Med School	New Haven	Connecticut

Sponsors (1)

Lead Sponsor	Collaborator
National Institute of Allergy and Infectious Diseases (NIAID)

Country where clinical trial is conducted

United States,