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AnthraxPhase 1NCT00063843

Anthrax-rPA: Safety, Tolerability, Immunogenicity

A Phase 1 study testing Recombinant Protective Antigen, Anthrax Vaccine Adsorbed in people with Anthrax, run by National Institute of Allergy and Infectious Diseases (NIAID) at 1 site in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The primary objective is to determine the tolerability and safety, from days 0 to 210, of escalating doses of rPA either with or without Alhydrogel (an adjuvant; used to increase the action of the principle drug) given in a two-dose, intramuscular regimen to health adults. Read more about this study

Who is it for?
Any age
Conditions the study is for
Anthrax
What is being tested?
Recombinant Protective Antigen, Anthrax Vaccine Adsorbed
Type of treatment
Vaccines
How many people
80 participants
Where
1 siteUnited States
Study dates
Jul 2003to Aug 2005
Phase
Phase 1
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages Any age
  • Child, Adult, Older adult

Who may be able to join

  • Age 18 to 40 years, inclusive. Good health as evidenced by screening evaluation within the 30 days prior to immunization. Expressed interest and availability to fulfill the study requirements. Signed, informed consents: screening, HIV antibody testing, stored specimen, HIPAA authorization, and protocol-specific consents. Agreement to avoid pregnancy for the 30 days following each vaccination by use of highly effective birth control methods. A highly effective birth control method is defined as one which results in a failure rate less than 1% per year when used consistently and correctly. These methods include tubal ligation, implants, injectables, combined oral contraceptives, some IUD's (All commonly used copper and hormone implanted IUD's in the US are highly effective including the following types: TCu-380A, TCu-220C, MLCu-375, Nova-T, and LNG-20. The less effective IUD's include the Lippes loop and the stainless steel ring), sexual abstinence, and a vasectomized partner. Agreement to refrain from taking any experimental drug or vaccine from day -30 to day 90.

Who cannot join

  • History of any of the following medical illnesses: Diabetes mellitus, Cancer, Heart disease (including hospitalization for heart attack, arrhythmia, or syncope), Unconsciousness (other than a single brief concussion), Seizures (other than simple benign febrile seizures of childhood), Gastrointestinal disease (including inflammatory bowel disease, celiac disease, and ulcers), Recurrent arthritis, Immunodeficiency, Autoimmune disease (including Systemic Lupus Erythematosus), Any current illness requiring daily medication (other than vitamins, contraceptives, and topical medications), Other conditions that in the opinion of the investigator would jeopardize the safety of the subject or the evaluation of the study objectives. Abnormal physical findings including, but not limited to, the following: Cardiac murmur (other than a functional murmur), Focal neurologic deficit, Hepatomegaly or splenomegaly, Lymphadenopathy, Jaundice, Hypertension (BP>150/90 on 2 separate days), Body mass index above 35 or below 19. Body mass index, BMI, is a measure of weight corrected for height (weight in kg/ [height in meters](to the second power)). Expected BMI is in the range of 22 to 24. Morbid obesity is defined as BMI greater than 44, and a BMI under 18 may be associated with anorexia. Other physical findings that in the opinion of the investigator would jeopardize the safety of the subject or the evaluation of the study objectives. A psychiatric condition, including schizophrenia, personality, anxiety, or affective disorders, which in the opinion of the investigator could compromise the subject's ability to participate in the trial. Known hypersensitivity to a component of the vaccine. Current drug or alcohol dependence as evidenced by a four-question screening interview to determine whether the subject has had medical, occupational, or family problems related to alcohol or illicit drug use during the past 12 months. These questions are derived from the Drug Abuse Screening Test (DAST-10) developed by the Addiction Research Foundation and recommended by the National Institute for Drug abuse as a tool for family physicians who wish to routinely screen new patients for drug abuse (http://www.nida.nih.gov/Diagnosis-Treatment/Diagnosis5.html). History of receipt of anthrax vaccine or history of diagnosis of or exposure to any form of anthrax. Member of the Armed Forces who deployed during Desert Storm/Desert Shield or who has been stationed in Korea or Southwest Asia since 1990, given the possibility of previous receipt of the licensed anthrax vaccine. Positive urine pregnancy test within the 24 hours prior to vaccination. Positive blood test for HIV, hepatitus B surface antigen or hepatitus C antibody, or syphilis (defined as positive RPR and FTA). Failure to pass the written exam. Employment in an industry involved in contact with large ruminant animals, such as working in a slaughter house, handling of raw animal hides or raw wool, veterinary sciences involving ruminant animals, or others where exposure to B. anthracis may occur. Screening laboratory values that fall outside the normal range as delineated in Appendix 3. Receipt of an experimental vaccine or medication within the 30 days prior to receipt of the study vaccine. Receipt of a live, attenuated vaccine within the 60 days prior to receipt of the study vaccine. Receipt of a subunit or killed vaccine within the 14 days prior to receipt of the study vaccine. Receipt of a blood product, including immunoglobulin, in the 90 days prior to receipt of the study vaccine. Anything that, in the opinion of the investigator, will compromise the participation of the subject with respect to his/her rights or risks. Oral temperature > 37.7 C or other acute illness occurring prior to inoculation on the day of vaccination. (This will lead to postponement of enrollment, not exclusion from the trial).

Trial locations and contacts

1 site in 1 country.

United States1 site
  • University of Maryland School of Medicine

    Baltimore, Maryland, 21201

Other trials in United States

About this study

Official title: A Phase I, Dose-Escalating Study to Assess the Safety, Tolerability, and Immunogenicity of Recombinant Anthrax Protective Antigen Vaccine (rPA) Administered in Two Intramuscular Doses to Healthy Adults

The primary objective is to determine the tolerability and safety, from days 0 to 210, of escalating doses of rPA either with or without Alhydrogel (an adjuvant; used to increase the action of the principle drug) given in a two-dose, intramuscular regimen to health adults. The secondary objective is to evaluate antibody responses to rPA, from days 0 to 210, following one of four escalating doses of vaccine given with and without Alhydrogel given in a two-dose series to healthy adults, and to compare immune responses following rPA with those following BioThrax (tm) given by either the intramuscular or SQ route. The tertiary objective is to describe the antibody kinetics following vaccination. This information will be used to determine the most probable optimal dose of rPA and/or Alhydrogel that is safe, well tolerated, and maximally immunogenic for use in future phase II trials.

Read the detailed description

This Phase I, Dose-Escalating clinical study is designed to examine the immunologic response to rPA in the presence and absence of Alhydrogel at the 2 lowest dose levels. The study will investigate whether use of an aluminum-based adjuvant results in an increase in the magnitude or the duration of the antibody response, thus providing information on the necessity of aluminum-based adjuvants in formulations used in the phase II clinical trials. The rationale for the use of BioThrax by two administration routes in this trial is to allow for preliminary comparisons of the immune response following the currently available vaccine to the response following the new recombinant product. Approximately 80 outpatient community volunteers from the Baltimore-Washington area aged 18-40 years will be recruited on the basis of good health, expressed interest in the study, and availability for follow-up as determined at a preliminary interview. Each eligible subject will be enrolled in 1 of 4 study groups, each with three arms, for 7 months. The subjects' randomly assigned and double-masked to Arms A and B will have a 30 day screening period in which they will receive two doses of IM rPA or IM rPA+Alhydrogel or IM BioThrax one month apart, with follow up days on 1, 2, 7, 14, 28, 29, 30, 35, 42, 120, and 210. The subjects randomly assigned, but unmasked, to arms 1-C or 2-C will receive 3 doses of SQ BioThrax at 14 day intervals with follow up on days 1, 2, 7, 14, 15, 16, 21, 28, 29, 30, 35, 42, 120 and 210. The information gathered from the study objectives will be used to determine the most probable optimal doses of rPA +/- Alhydrogel that are safe, well tolerated, and maximally immunogenic for use in future phase II trials.

Conditions
Anthrax
Being tested
Recombinant Protective Antigen, Anthrax Vaccine Adsorbed
Keywords
Bacillus anthracis (anthrax)
Medical subject headings
Anthrax

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Recombinant Protective Antigen, Anthrax Vaccine AdsorbedBiological

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted8 Jul 2003 (estimated)
  2. Study startJul 2003
  3. Study completionAug 2005

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 1
Primary purpose
Prevention
Allocation
Randomised
Masking
Double blind
Enrolment
80 participants
IDs, dates and publications
ClinicalTrials.gov ID
NCT00063843
Sponsor's protocol ID
01-003
Other IDs
Anthrax CVD 1000
Status last verified
May 2006
First submitted
7 Jul 2003
Last updated
27 Aug 2010
Results posted
No

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing Recombinant Protective Antigen, Anthrax Vaccine Adsorbed in people with Anthrax, run by National Institute of Allergy and Infectious Diseases (NIAID) at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 1 inclusion and 1 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 27 Aug 2010. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 27 Aug 2010.

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