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CompletedNCT01202695Updated Mar 15, 2024

Safety and Pharmacokinetics Study of Human Monoclonal Antibody (AVP-21D9)

A Phase 1 interventional study of AVP-21D9 and Placebo in Anthrax, sponsored by Emergent BioSolutions. Completed at 1 site in United States. Open to participants aged 18 Years to 45 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2024-03-15.

Sponsored by Emergent BioSolutions · Phase 1, Interventional, and Treatment

Phase
Phase 1
Study type
Interventional
Enrollment
50
Allocation
Randomized
Ages
18 Years to 45 Years
Sex
All
01

Study summary

Primary:

  • To compare the safety profile of a single intravenous administration of AVP-21D9 as compared with Placebo

Secondary:

  • To evaluate the pharmacokinetics (PK) of a single intravenous administration of AVP-21D9
  • To evaluate the immunogenicity of AVP-21D9
Read the detailed description

This is a sequential, dose-escalating healthy volunteer study of the safety and pharmacokinetics of intravenously-infused AVP-21D9.

02

Conditions studied

  • Anthrax

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03

In context

Anthrax

75 studies on the registry are indexed under Anthrax; 12 are open to participants now.

This study's enrollment of 50 is below the median of 100 across 57 interventional studies indexed under Anthrax.

Browse Anthrax studies →

Lead sponsor

Emergent BioSolutions is the lead sponsor of 47 studies on the registry; 7 are open to participants now.

Of its 11 completed or terminated interventional studies of FDA-regulated products, 7 (64%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 45 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Eligibility criteria

Key Inclusion Criteria:

  • Healthy volunteers, between 18 and 45 years of age
  • Normal laboratory (blood test) results

Key Exclusion Criteria:

  • Prior immunization with anthrax vaccine
05

Study design

Phase
Phase 1
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Care provider)
Enrollment
50 participants (actual)

Study arms

  • Experimental
    AVP-21D9

    Drug: AVP-21D9

  • Placebo comparator
    Placebo

    Drug: Placebo

Interventions

  • DrugAVP-21D9

    intravenously, single dose

  • DrugPlacebo

    Placebo comparator

    Also known as: Placebo comparator

06

What researchers measure

Primary outcomes

  1. Safety assessments

    Safety will be assessed by collecting data (physical exams, adverse event reporting, lab testing/analysis) and concomitant medications at each visit from pre-infusion period through post-infusion day 90 or the early withdrawl visit, if applicable.

    Time frame: 90 days following infusion

Secondary outcomes

  1. Pharmacokinetics (PK) analysis

    PK parameters will be determined for a single intravenous administration of AVP-21D9 as measured by an immunoassay for AVP-21D9.

    Time frame: 90 days following infusion

  2. Immunogenicity analysis

    Immunogenicity will be measured by blood testing/analysis on anti-AVP-21D9 antibody generation

    Time frame: From day 1 up to day 90 following infusion

07

Study locations

1 site
  • ICON Development Solutions
    San Antonio, Texas 78209, United States
08

References and documents

Publications

  • Malkevich NV, Hopkins RJ, Bernton E, Meister GT, Vela EM, Atiee G, Johnson V, Nabors GS, Aimes RT, Ionin B, Skiadopoulos MH. Efficacy and safety of AVP-21D9, an anthrax monoclonal antibody, in animal models and humans. Antimicrob Agents Chemother. 2014 Jul;58(7):3618-25. doi: 10.1128/AAC.02295-13. Epub 2014 Apr 14. PubMed 24733473 ↗
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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 15, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT01202695
Responsible party
Sponsor
First posted
Sep 16, 2010
Start date
Aug 2010
Primary completion
Jun 2011
Completion
Jun 2011
Last update
Mar 15, 2024

Study contacts

Robert Hopkins, MD
study director · Emergent BioSolutions

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Mar 2024. You cannot join it, but the record below documents what was studied.

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