Active Immunization of HIV-Infected Pregnant Women: A Phase I Study of Safety and Immunogenicity of a rgp120/HIV-1 Vaccine (NOTE: Some Patients Receive Placebo)

This study has been withdrawn prior to enrollment.
Sponsor:
Information provided by (Responsible Party):
National Institute of Allergy and Infectious Diseases (NIAID)
ClinicalTrials.gov Identifier:
NCT00001046
First received: November 2, 1999
Last updated: May 23, 2012
Last verified: May 2012
  Purpose

PRIMARY: To evaluate the short-term safety of rgp120/HIV-1SF2 vaccine versus MF59 placebo administered to HIV-infected pregnant women.

SECONDARY: To evaluate the immunogenicity and long-term safety of rgp120/HIV-1SF2 in HIV-infected pregnant women who received the vaccine during pregnancy only or during pregnancy and postpartum. To evaluate immunogenicity and safety in the infant through 18 months of age following maternal immunization with the vaccine during pregnancy.

Active immunization of HIV-infected women during pregnancy may slow the progression of maternal disease, reduce the titer of virus in maternal plasma, and increase the titer of epitope-specific antibody. Also, active immunization has the potential to induce primary immunity in the fetus and to boost both T-cell and humoral immune responses to HIV in the mothers.


Condition Intervention Phase
HIV Infections
Pregnancy
HIV Seronegativity
Biological: MF59
Biological: rgp120/HIV-1 SF-2
Phase 1

Study Type: Interventional
Study Design: Endpoint Classification: Safety Study
Intervention Model: Parallel Assignment
Primary Purpose: Prevention
Official Title: Active Immunization of HIV-Infected Pregnant Women: A Phase I Study of Safety and Immunogenicity of a rgp120/HIV-1 Vaccine (NOTE: Some Patients Receive Placebo)

Resource links provided by NLM:


Further study details as provided by National Institute of Allergy and Infectious Diseases (NIAID):

Enrollment: 0
Detailed Description:

Active immunization of HIV-infected women during pregnancy may slow the progression of maternal disease, reduce the titer of virus in maternal plasma, and increase the titer of epitope-specific antibody. Also, active immunization has the potential to induce primary immunity in the fetus and to boost both T-cell and humoral immune responses to HIV in the mothers.

Women are randomized to receive rgp120/HIV-1SF2 vaccine or MF59 placebo. Patients receive the first immunization between 16 and 24 weeks gestation and monthly thereafter until delivery, for a maximum of five immunizations. Patients may continue to receive the immunization regimen to which they were originally assigned at 3, 6, 9, and 12 months postpartum. Maternal follow-up continues until 18 months postpartum; infants are followed until age 18 months.

  Eligibility

Ages Eligible for Study:   16 Years to 40 Years
Genders Eligible for Study:   Female
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria

Concurrent Medication:

Allowed during pregnancy:

  • AZT.
  • Methadone maintenance.

NOTE:

  • Patients may not initiate antiretroviral therapy for disease progression.

NOTE:

  • Patients may change from AZT to another antiretroviral agent or may begin antiretroviral therapy following delivery, if clinically indicated.

Patients must have:

  • Documented HIV infection.
  • CD4 count >= 400 cells/mm3 (average of two determinations obtained 1 week apart).
  • No clinical criteria for a diagnosis of AIDS.
  • HIV p24 antigen <= 30 pg/ml.
  • Estimated gestational age between 16 and 24 weeks, confirmed by baseline sonogram that does not demonstrate any congenital abnormalities considered to be incompatible with life.
  • Intention to carry pregnancy to term.
  • Willingness to be followed by an ACTU for the duration of the study.

NOTE:

  • Father of the fetus (if available after a reasonable attempt to contact him) must provide informed consent.

Prior Medication:

Allowed:

  • AZT.

Exclusion Criteria

Co-existing Condition:

Patients with the following symptoms or conditions are excluded:

  • Known hypersensitivity to a component of the vaccine.
  • Hepatitis B antigen positive at study entry.
  • Evidence of life-threatening or other serious pre-existing fetal abnormalities (e.g., anencephaly, renal agenesis, Potter's syndrome).
  • Evidence of syphilis that requires therapy during this pregnancy.
  • Intention to breast-feed.

Presence of obstetrical high-risk factors such as:

  • insulin-dependent diabetes
  • hypertension requiring the use of anti-hypertensive therapy
  • repeated intrauterine fetal demise
  • Rh-sensitization or other blood group alloimmunization
  • diseases requiring use of immunosuppressive therapy (e.g., asthma, lupus).

Concurrent Medication:

Excluded during pregnancy:

  • Antiretrovirals other than AZT.
  • Immunomodulating agents (e.g., HIVIG, IVIG).
  • Other investigational drugs or immunosuppressive agents.

NOTE:

  • Patients may change from AZT to another antiretroviral agent or may begin antiretroviral therapy following delivery, if clinically indicated.

Prior Medication:

Excluded within 90 days prior to study entry:

  • Antiretrovirals other than AZT.
  • Immunomodulating agents (e.g., HIVIG, IVIG).

Current use of illicit drugs or chronic alcohol use by patient history.

  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT00001046

Sponsors and Collaborators
Investigators
Study Chair: Starr S
Study Chair: Allen M
Study Chair: Scott GB
Study Chair: Silverman N
  More Information

No publications provided

Responsible Party: National Institute of Allergy and Infectious Diseases (NIAID)
ClinicalTrials.gov Identifier: NCT00001046     History of Changes
Other Study ID Numbers: ACTG 233, 11210
Study First Received: November 2, 1999
Last Updated: May 23, 2012
Health Authority: United States: Federal Government

Keywords provided by National Institute of Allergy and Infectious Diseases (NIAID):
Vaccines, Synthetic
Pregnancy
Pregnancy Complications, Infectious
AIDS-Related Complex
HIV Envelope Protein gp120
HIV Preventive Vaccine
HIV Therapeutic Vaccine

Additional relevant MeSH terms:
HIV Infections
Acquired Immunodeficiency Syndrome
Lentivirus Infections
Retroviridae Infections
RNA Virus Infections
Virus Diseases
Sexually Transmitted Diseases, Viral
Sexually Transmitted Diseases
Immunologic Deficiency Syndromes
Immune System Diseases
Slow Virus Diseases

ClinicalTrials.gov processed this record on October 01, 2014