Dose-Escalation Study on Safety and Immunogenicity of VPM1002 in Comparison to BCG in Healthy Volunteers in South Africa

Vakzine Projekt Management

Status and phase

Completed

Phase 1

Conditions

Tuberculosis

Treatments

Biological: VPM1002 live vaccine

Biological: commercially available live vaccine BCG

Study type

Interventional

Funder types

Other

Industry

Identifiers

NCT01113281

VPM1002-ZA-1.10TB

DOH-27-0210-3083 (Other Identifier)

Details and patient eligibility

About

Goal of VPM is the development of a recombinant urease C-deficient listeriolysin expressing BCG vaccine strain (VPM1002) as a safe, well tolerated and efficacious vaccine against tuberculosis (TB) for residents in endemic areas and persons at risk in non-endemic areas. The new vaccine should be at least as potent as the current strain and should be safer than BCG (Kaufmann, 2007a; Grode et al., 2005). The vaccine is formulated as live lyophilised bacteria to be re-suspended before intradermal injection. The preceding clinical trial in 80 volunteers in Germany indicated immunogenicity and safety being sufficient for proceeding with the clinical development. Hence, the current study is commenced in South Africa, a country highly endemic for tuberculosis.

24 volunteers were randomly allocated to 4 groups each with 6 adult healthy volunteers.

Enrollment

24 patients

Sex

All

Ages

18 to 45 years old

Volunteers

Accepts Healthy Volunteers

Inclusion criteria

Adult volunteers 18 to 45 years of age
Volunteers must use acceptable contraception and avoid pregnancy for the duration of the study (6 months)
Healthy (medical history, physical examination, vital signs, ECG and laboratory tests at screening)
No signs of active or latent tuberculosis infection
BMI of 19 - 33 kg/m2
Subjects must be able and willing to comply with the study protocol, available and willing to complete all study measurements and have signed an Informed Consent form approved by the Ethics Committee.
Reachable by phone during the whole study period (approximately 6 months).
Negative test for HIV1 and HIV2, hepatitis B surface antigen and antibody to hepatitis C virus.
No anamnestic evidence for a primary or secondary immunodeficiency.
No skin eczema lesion at the intended injection site.
No anamnestic predisposition for scarring badly or for keloid formation.
No other vaccination during eight weeks before the current study.
No participation in another clinical trial within 3 months before study vaccination and the 6 months of the current study.
No prior participation in a TB vaccine trial.
Able and willing to abstain from strenuous physical exercise 24 hours before screening examination, and 24 hours before vaccination

Exclusion criteria

History of prior TB disease
History of anaphylaxis or severe allergic reactions
Known allergies to any component of the investigational or reference product or known history of severe skin reaction against the Tuberculin test
Presence of any person in the household of the volunteer with active tuberculosis disease
Tuberculin-PPD-in-vivo-test equal or more than 10 mm before baseline
systemic disorders which could interfere with the interpretation of the study results or compromise the health of the volunteers
BCG-vaccination during 10 years before study vaccination
Acute fever or fever in the last 7 days before dosing
Any malignant condition
Concomitant treatment with medication that may affect immune function during 3 months before study vaccination and the 6 months of current study. No oral antibiotics during the 14 days before study vaccination and no injectable antibiotics during the 28 days prior to vaccination.
Treatment with blood products in the past 6 months up to end of study.
Any clinically significant laboratory abnormalities on screened blood samples.
A history of drug or alcohol abuse
Positive test for drugs of abuse on urine testing at screening
Blood donation for non study-related purposes within 3 months before and during the entire duration of the study
Clinically relevant result from sonographic liver imaging
Professional or regular contact with live animals for food production