A Phase I Study of Safety & Immunogenicity of AERAS-456 in HIV-Neg. Adults Treated for Drug-susceptible Pulmonary TB (C-037-456)

A Phase I, Double-blind, Randomized, Placebo-controlled, Study to Evaluate the Safety and Immunogenicity of AERAS-456 in HIV Negative Adults Successfully Treated for Drug-susceptible Pulmonary Tuberculosis

This is a Phase I, double-blind, randomized, placebo-controlled safety and immunogenicity study in adults who have recently been successfully treated for drug-susceptible pulmonary Tuberculosis (TB). The safety and immunogenicity profile of escalating doses of AERAS-456 in HIV-negative subjects recently treated for drug-susceptible pulmonary TB will be investigated. The study will be conducted at three sites in South Africa.

Study Overview

• Status: Completed
• Conditions: Tuberculosis
• Intervention / Treatment: Biological: H56:IC31; Biological: Placebo

Detailed Description

This study will be the first evaluation of AERAS-456 in subjects who have completed a full course of treatment prescribed for pulmonary TB. Subjects will begin screening for study participation when they have completed 4 calendar months of TB treatment. Subjects meeting the inclusion/exclusion criteria will be randomized within a study group in a 3:1 ratio (N=18 AERAS-456; N=6 placebo) to receive two 0.5 mL intramuscular injections of AERAS-456 or placebo eight weeks apart, on Study Day 0 and Study Day 56.

• Study Type: Interventional
• Enrollment (Actual): 22
• Phase: Phase 1

Contacts and Locations

Study Locations

• South Africa
  • Johannesburg, South Africa
    • The Aurum Institue
  • Cape Town
    • Bellville 7530, Cape Town, South Africa
      • Task Clinical Research Centre
    • Mowbray, Cape Town, South Africa
      • University of Cape Town Lung Institute

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 60 years (ADULT)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

1. Is HIV-negative.
2. Is male or female aged 18 through 60 years on Study Day 0.
3. Has completed the written informed consent process.
4. Has a diagnosis of confirmed pulmonary tuberculosis and is on standard TB treatment.
5. Is confirmed to be Mtb negative by either 2 GeneXpert tests or 2 cultures from sputum samples taken on 2 different days at least 1 week apart, the first after at least 4 calendar months of TB treatment and the second day not later than after 5 calendar months (with a window of plus 1 week) of treatment.
6. Agrees to complete the prescribed course of TB treatment (completion of TB treatment can occur after vaccination on Study Day 0; subject must have completed at least 5 calendar months of TB treatment on Study Day 0; if TB treatment is completed before randomization/vaccination then the time from completion of TB treatment to randomization/vaccination should not exceed 28 days).
7. For female subjects: agrees to avoid pregnancy between screening and up until two months after last vaccination. Women physically capable of pregnancy (not sterilized and still menstruating or within 1 year of the last menses if menopausal) in sexual relationships with men must use an acceptable method of avoiding pregnancy from 28 days prior to administration of study vaccine up until two months after the last vaccination. Acceptable methods of avoiding pregnancy include a sterile sexual partner, sexual abstinence (not engaging in sexual intercourse), hormonal contraceptives (oral, injection, transdermal patch, or implant), vaginal ring, or intrauterine device (IUD).
8. Agrees to stay in contact with the study site for the full duration of the study, providing updated contact information as necessary, and has no current plans to move from the study area during the duration of the study.

Exclusion Criteria:

1. Evidence of a new acute illness that may compromise the safety of the subject in the study on Study Day 0.
2. History of TB prior to current episode.
3. TB meningitis or other forms of severe TB with high risk of a poor outcome.
4. Previous medical history that may compromise the safety of the subject in the study, including but not limited to severe impairment of pulmonary function from tuberculosis infection or other pulmonary disease; chronic illness with signs of cardiac or renal failure; suspected progressive neurological disease; or uncontrolled epilepsy.
5. Evidence of any systemic disease or any acute or chronic illness that may interfere with the evaluation of the safety of the vaccine.
6. History or laboratory evidence of any possible immunodeficiency state.
7. History of allergic disease or reactions likely to be exacerbated by any component of the study vaccine.
8. Received any non-BCG TB vaccine previously.
9. For female subjects: Currently pregnant, lactating/nursing, or a positive urine HCG.
10. Severe anemia, defined as hemoglobin less than 10 g/dL or a hematocrit less than 30 percent based on screening hematology obtained within 7 days before randomization on Study Day 0.
11. History of autoimmune disease or immunosuppression.
12. Used immunosuppressive medication within 42 days before Study Day 0 (inhaled and topical corticosteroids are permitted).
13. Received immunoglobulin or blood products within 42 days before Study Day 0.
14. Received any investigational drug therapy or investigational vaccine within 6 months before Study Day 0, or planned participation in any other investigational study during the study period.
15. Received any licensed vaccine within 28 days before Study Day 0, or receipt of any vaccine or immunomodulating agent through Study Day 63.
16. Is, in the judgment of the principal investigator, not suitable to participate in this clinical study.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: PREVENTION
• Allocation: RANDOMIZED
• Interventional Model: PARALLEL
• Masking: TRIPLE

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
EXPERIMENTAL: Gr 1 H56:IC31 5/500; 5ug H56 + 500 ug IC31	Biological: H56:IC31; H56:IC31 contains a fusion protein (referred to as H56 antigen, or H56) of 3 mycobacterial antigens (the early secreted antigens Ag85B and ESAT-6, and the latency antigen Rv2660c).; Other Names: AERAS-456
PLACEBO_COMPARATOR: Placebo; The placebo consists of 10mM Tris and 169 mM NaCl pH 7.4.	Biological: Placebo; The placebo consists of 10mM Tris and 169 mM NaCl pH 7.4.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Number of Participants With Adverse Events (AEs) and Serious Adverse Events (SAEs)	Unsolicited AEs: 28 days after each vaccination Solicited AEs: 7 days after each vaccination SAEs: through Day 420 Adverse events of special interest: through Day 420	Day 0 to Day 420

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Mean Percent Change From Baseline of Participants' Responses to TB Antigens Ag85A and ESAT-6	13-Color PBMC Intracellular Cytokine Staining (ICS) Assay using PBMCs Percent Antigen-specific T Cell DMSO-subtracted, ANY Cytokine Response - Change from Baseline T Cell: CD4	Day 224

Collaborators and Investigators

• Sponsor: Aeras
• Collaborators: Statens Serum Institut
• Investigators: Study Director: Dereck Tait, MBChB, Aeras

Study record dates

Study Major Dates

• Study Start (ACTUAL): November 21, 2014
• Primary Completion (ACTUAL): June 24, 2016
• Study Completion (ACTUAL): October 24, 2016

Study Registration Dates

• First Submitted: February 20, 2015
• First Submitted That Met QC Criteria: February 25, 2015
• First Posted (ESTIMATE): March 3, 2015

Study Record Updates

• Last Update Posted (ACTUAL): November 18, 2019
• Last Update Submitted That Met QC Criteria: October 28, 2019
• Last Verified: August 1, 2017

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Infections; Bacterial Infections; Bacterial Infections and Mycoses; Gram-Positive Bacterial Infections; Actinomycetales Infections; Mycobacterium Infections; Tuberculosis
• Other Study ID Numbers: C-037-456

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO