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A Phase 4, Observational Field Study to Evaluate TPOXX in Patients With Smallpox

A Phase 4, Observational Field Study to Evaluate the Safety and Clinical Benefit of TPOXX (Tecovirimat)-Treated Patients Following Exposure to Variola Virus and Clinical Diagnosis of Smallpox Disease

Status
Withdrawn
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT03972111
Enrollment
0
Registered
2019-06-03
Start date
2020-01-01
Completion date
2024-09-30
Last updated
2026-09-10

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Smallpox

Brief summary

Phase 4, Observational Field Study in Patients Treated With TPOXX for Smallpox Disease

Detailed description

Phase 4, Observational Field Study to evaluate safety and clinical benefit of TPOXX (tecovirimat) in patients treated with TPOXX following exposure to variola virus and a clinical diagnosis of smallpox disease.

Interventions

DRUGTPOXX 200Mg Capsule

TPOXX 600 mg (three 200 mg.) capsules twice daily for 14 days

Sponsors

SIGA Technologies
Lead SponsorINDUSTRY
Biomedical Advanced Research and Development Authority
CollaboratorFED

Study design

Observational model
COHORT
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Healthy volunteers
No

Inclusion criteria

* Able to provide informed consent or assent themselves or through a guardian or legally authorized representative, receiving or initiating treatment with TPOXX, and willing and able to adhere to the recommended procedures in the protocol. * Determined, per the clinical definition of smallpox, that the patient presenting with a case of acute, generalized vesicular/pustular rash meets Centers for Disease Control and Prevention (CDC) criteria of having confirmed, suspected, or probable smallpox and/or is at high or moderate risk for developing smallpox. * The CDC in coordination with the Department of Health and Human Services/Assistant Secretary for Preparedness and Response (ASPR) has released TPOXX to the physician or designated health authorities for patient treatment, and the CDC has provided physician contact information to PPD, the contract research organization.

Exclusion criteria

• Known allergy to tecovirimat and/or excipients of TPOXX.

Design outcomes

Primary

MeasureTime frameDescription
Assess survival44 days post first dose of TPOXXTo assess the overall survival at Day 44 following treatment with TPOXX

Secondary

MeasureTime frameDescription
Survival status14 days post first dose of TPOXXSurvival status after completion of 14 days of TPOXX treatment will be assessed by physician for inpatients and collected from patient via patient diary question or follow up telephone contact.
Time to deathFrom date of treatment with TPOXX until the date of death from any cause, whichever came first, assessed up to 44 days after TPOXX treatmentTime to death after treatment with TPOXX

Countries

United States

Contacts

STUDY_DIRECTORDennis E. Hruby, PhD

SIGA Technologies

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Sep 11, 2026