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Plasmapheresis of Anthrax-Vaccinated Subjects for Production of Anthrax Immune Globulin

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00031291
Recruitment Status : Completed
First Posted : March 1, 2002
Last Update Posted : March 4, 2008
Information provided by:
National Institutes of Health Clinical Center (CC)

Brief Summary:

This protocol is a joint project of the National Institutes of Health, the Centers for Disease Control and the United States Army Medical Research Institute for Infectious Diseases. It is designed to collect plasma from healthy employees of the Department of Defense who have been vaccinated against anthrax. The collected plasma will be pooled to make an anthrax-fighting antibody solution called anthrax immune globulin intravenous (AIGIV). This solution will be used for:

  • Animal experiments to test its effectiveness in preventing the development of anthrax after inhalation exposure;
  • Treating people severely ill with anthrax who are not improving with standard antibiotic therapy; and
  • Treating people exposed to spores of the bacteria that cause anthrax to try to prevent development of the disease.

Healthy volunteers between 18 and 65 years of age who have received at least four doses of the anthrax vaccine and who meet the criteria for blood donors may be eligible to participate in this study. Volunteers will be recruited from Department of Defense civilian and military employees. Candidates will be screened with an interview and blood tests.

Participants will undergo the following procedures:

  • Have a health history screen for donating plasma
  • Measurement of heart rate, blood pressure and temperature
  • Fingerstick to check hemoglobin level
  • Blood tests for HIV, hepatitis B and C, syphilis and other infectious diseases
  • Blood test for anthrax antibody levels
  • Plasmapheresis to collect blood plasma (the liquid part of the blood)

In plasmapheresis, whole blood is drawn through a needle placed in an arm vein. The blood flows into a cell separator machine, where it is spun to separate the plasma from the blood cells. The plasma is collected in a plastic bag in the machine, while the rest of the blood is returned to the donor through the needle in the arm. During the procedure, the donor is given a blood thinner called citrate to prevent the blood from clotting while it is in the cell separator machine. The procedure lasts from 60 to 90 minutes. Only a small fraction of the body's total plasma is removed, and it is quickly replaced by the body with no long-term health effects. Participants may be requested to donate plasma as often as every 3 to 4 days or as infrequently as once a month for a maximum of six donations.

Condition or disease Intervention/treatment
Anthrax Drug: Anthrax Immune Globulin

Detailed Description:
Inhalational anthrax infection is associated with a 60-100% mortality rate, depending on the rapidity with which appropriate antimicrobial therapy is initiated. Experiments using an animal model of inhalational anthrax suggest that adjunctive therapy with equine-derived anti-anthrax antisera may be associated with higher survival rates, however no human-derived antisera are currently available. The purpose of this protocol is to provide a mechanism for obtaining high-titer anti-anthrax immunoglobulin by plasmapheresis of human volunteers who have recently received a course of anthrax vaccination. Volunteers are Department of Defense (DoD) employees and military personnel who are within 3 to 12 weeks of having received a fourth or greater dose of AVA if four to six total inoculations were given, or within 6 months of the last dose if seven or more AVA inoculations were given. All vaccinees were vaccinated as a requirement of their tour of duty and will otherwise meet all blood donor eligibility criteria, in accord with Food and Drug Administration (FDA) requirements and American Association of Blood Banks (AABB) standards. Plasmapheresis will be accomplished using licensed apheresis devices and standard collection techniques, and products will meet all blood safety testing requirements currently mandated by the FDA. Plasma components collected under this protocol will be stored in the frozen state as fresh frozen plasma (FFP) until a protocol for administration of these components to human patients critically ill with inhalational anthrax infection has been reviewed and approved by the IRB's of NIH, CDC, and USAMRIID. Following this approval, products will undergo standard Cohn-Oncley fractionation into a concentrated immunoglobulin preparation suitable for intravenous use, to be designated anthrax immune globulin intravenous (AIGIV). Intravenous administration of products derived from plasma collected under this protocol, whether as single-donor FFP or as AIGIV, will occur under a Phase I/II trial involving an Investigational New Drug (IND) exemption, with the IND held by the Centers for Disease Control and Prevention (CDC). The plasma products collected under this protocol will also be used in pharmacokinetic, dose finding, and efficacy studies in animals, and to establish a repository of reference serum standards at the CDC. This study represents a collaborative effort between the DTM/NIH, CDC, and DoD.

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Study Type : Observational
Enrollment : 400 participants
Official Title: Plasmapheresis of Anthrax-Vaccinated Subjects for Production of Anthrax Immune Globulin
Study Start Date : February 2002
Study Completion Date : March 2004

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Anthrax

Information from the National Library of Medicine

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, Learn About Clinical Studies.

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Ages Eligible for Study:   Child, Adult, Older Adult
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No


Age range 18 to 65 years.

Weight greater than 110 pounds.

Fingerstick hemoglobin greater than or equal to 12.5 g/dL.

No known heart, lung, kidney disease, or bleeding disorders.

No history of hepatitis since age 11.

No history of intravenous injection drug use.

No tattoos or non-sterile skin piercing within the past 12 months.

No history of engaging in high-risk activities for exposure to AIDS or hepatitis viruses, as defined in the DTM "Donor Alert."

Female subjects should not be pregnant.

Completion of a primary AVA vaccination series (0, 2, 4 weeks and 6 months) and be within 3 to 12 weeks of receiving a dose at 6 months, 12 months, or 18 months; or within 6 months of an annual booster.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00031291

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United States, Maryland
Warren G. Magnuson Clinical Center (CC)
Bethesda, Maryland, United States, 20892
Sponsors and Collaborators
National Institutes of Health Clinical Center (CC)
Layout table for additonal information Identifier: NCT00031291    
Other Study ID Numbers: 020137
First Posted: March 1, 2002    Key Record Dates
Last Update Posted: March 4, 2008
Last Verified: March 2004
Keywords provided by National Institutes of Health Clinical Center (CC):
Immune Globulin
Additional relevant MeSH terms:
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Bacillaceae Infections
Gram-Positive Bacterial Infections
Bacterial Infections
Immunoglobulins, Intravenous
Rho(D) Immune Globulin
Immunologic Factors
Physiological Effects of Drugs