Phase II Study of Range and Schedule of rPA Doses

NCT00170456 | Completed Phase 2 DMC

• 2 other identifiers: 05-0003QGUY/2004/AV-rPA/-01
• Study Type: interventional
• Target: 415
• Locations: 1 country
• Sites: 2

Brief Summary

This is a dose ranging study comparing different vaccine schedules of rPA vaccine for anthrax. Safety and the capability to induce an immune response will be evaluated.

Conditions

Prevention of Bacillus Anthracis (Anthrax) Infection

Keywords

Anthrax vaccine

Outcome Measures

Primary Outcomes (1)

• Safety of rPA vaccine

Secondary Outcomes (1)

• Immunogenicity of rPA vaccine

Study Arms (4)

1

ACTIVE COMPARATOR

Low dose rPA vaccine regime 1

Biological: rPA vaccine containing alhydrogel

2

ACTIVE COMPARATOR

Low dose rPA vaccine regime 2

Biological: rPA vaccine containing alhydrogel

3

ACTIVE COMPARATOR

High dose rPA vaccine regime 1

Biological: rPA vaccine containing alhydrogel

4

ACTIVE COMPARATOR

High dose rPA vaccine regime 2

Biological: rPA vaccine containing alhydrogel

Interventions

rPA vaccine containing alhydrogel BIOLOGICAL

1; 2; 3; 4

Eligibility Criteria

• Age: 18 Years - 55 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)

You may qualify if:

• Healthy males or females.
• Aged between 18-55 years (inclusive).
• A body mass index (BMI) of 18-35.
• Signed informed consent, which includes information about the potential risks and effects of rPA.
• A medical history without major organ pathology (e.g. cardiac, immunological, psychiatric, endocrine or neurological disorders, cancer or other wasting diseases - (adequately treated actinic keratosis, or basal cell carcinoma \[BCC\], or carcinoma in situ \[CIS\] of the cervix are permitted).
• A female may be enrolled if one of the following criteria applies:
• Either If of child-bearing capacity then: A female is not pregnant or breast feeding AND is routinely using adequate injectable or transdermal (administered at the recommended frequency) or oral contraception (at a stable dose for at least three months prior to the first dose of vaccine) and will continue to do so during the study, augmenting this contraceptive measure with a barrier method OR is sexually abstinent OR is monogamous and has a partner who has had a vasectomy (\>1 month previously) OR is using a commonly recognised copper and hormone implanted intrauterine device (IUD) such as TCu-380A, TCu-220C, MLCu-375, Nova-T or LNG-20. In addition, the subject must have a negative blood pregnancy test prior to enrolment into the study and negative urine pregnancy test pre-dose.
• Or A female is post menopausal (defined as a female with no menstrual cycle for at least 24 months and of menopausal age (\>45 years).
• Or A female with no menstrual cycle for between 12 and 24 months and of menopausal age (\>45 years) who has a negative blood pregnancy test prior to enrolment into the study and a negative urine pregnancy test pre-dose.
• Or A female has been surgically sterilised (confirmed by review of medical record).
• Or A female has had a total hysterectomy at least 3 months prior to the start of the study (confirmed by review of medical record).
• A male may be enrolled if willing to use barrier methods of contraception and whose partner is using an acceptable form of contraception for 3 months post each dose.
• Able to understand the informed consent form and other documents required to be read by the subject.

You may not qualify if:

• Presence of any clinically significant medical condition as determined by the Investigator.
• Medically significant hypersensitivity or idiosyncratic reaction related to any medical product including vaccines.
• History or evidence of drug abuse.
• Participation in a clinical study of an investigational vaccine within 3 months prior to the start of the study or an investigational drug product within 30 days prior to the start of the study.
• Use of any prescription or non-prescription medication within 7 days prior to the first dosing with the exception of over-the-counter (OTC) antihistamine, non-steroidal anti-inflammatory drugs (NSAID), acetaminophen, OTC decongestants or oral/injectable/transdermal contraceptives. Any medication taken within 7 days of the first dosing will be recorded.
• History or suspicion of inability to co-operate adequately.
• Donation of blood or blood products for a period of 4 weeks prior to participation in the study.
• Immunodeficiency or clinically active autoimmune disease.
• Positive urine alcohol and drug screen for drugs of abuse (opiates, methadone, cocaine, amphetamines, cannabinoids, and barbiturates).
• Positive test for human immunodeficiency virus (HIV), and/or hepatitis B and/or hepatitis C.
• Vaccination(s) with a live vaccine in the previous 4 weeks or killed / inactivated vaccines in the previous 3 weeks.
• Blood or plasma transfusions, or pooled gamma-globulin in the previous 3 months and need for blood or plasma transfusions during this study.
• Received anthrax vaccine or anthrax immune globulin or been otherwise exposed to B. anthracis.
• Clinically relevant abnormal findings on routine physical examination.
• Clinically significant out-of-range laboratory tests at screening including: urinalysis, serum creatinine, lactate dehydrogenase (LDH), potassium, glucose, liver function tests (LFT); absolute neutrophil count, platelet count, white blood cell count, electrolytes, clotting and blood haemoglobin.

Sponsors & Collaborators

• PharmAthene UK Limited: lead
• National Institute of Allergy and Infectious Diseases (NIAID): collaborator

Study Sites (2)

GDRU, Quintiles Ltd

London, United Kingdom

Location

Simbec Research Limited

Merthyr Tydfil, CF48 4DR, United Kingdom

Location

MeSH Terms

Conditions

Anthrax; Infections

Condition Hierarchy (Ancestors)

Bacillaceae Infections; Gram-Positive Bacterial Infections; Bacterial Infections; Bacterial Infections and Mycoses

Study Officials

• Timothy Mant, MD

  GDRU, London, UK

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: interventional
• Phase: phase 2
• Allocation: RANDOMIZED
• Masking: SINGLE
• Who Masked: PARTICIPANT
• Purpose: PREVENTION
• Intervention Model: PARALLEL
• Sponsor Type: INDUSTRY

Study Record Dates

• First Submitted: September 9, 2005
• First Posted: September 15, 2005
• Study Start: March 1, 2005
• Primary Completion: January 1, 2007
• Study Completion: February 1, 2007
• Last Updated: September 15, 2008

Record last verified: 2008-09

Locations

GB (2)