Zopapogene imadenovec for Recurrent Respiratory Papillomatosis

Zopa Retreatment and Vector Shedding in Adults With RRP

Recruiting Phase 4 Interventional Study
Recurrent Respiratory Papillomatosis Papillomavirus Infection Papillomaviridae
No Placebo Group Every participant receives an active treatment — no one gets a placebo. Prior Safety Data This treatment has already been tested in at least one earlier human trial.
Ready to participate?

Review the details below, then apply to join this clinical trial.

At a Glance
Age
18 and older
Sex
Any
Trial phase
Phase 4
Study type
Interventional
Purpose
Treatment
Participants needed
30 (estimated)
Sponsor
Precigen, Inc · Industry
Who this trial is looking for

This trial is looking for adults with recurrent respiratory papillomatosis. Participants will receive a treatment called Zopapogene imadenovec and help researchers learn more about its effects.

Are You a Good Fit for This Trial?

You may be able to join if

  • I am 18 years or older.
  • I have been diagnosed with recurrent respiratory papillomatosis.
  • I have not received Zopa treatment before if in Cohort 1.
  • I have received at least four Zopa treatments and need further procedures if in Cohort 2.
  • I have growths in my throat that can be cleaned out.
  • I am in good health (ECOG performance status 0 or 1).
  • I can understand and sign informed consent.
  • I will use contraception during and after treatment if I can get pregnant.

You may not be able to join if

  • I have conditions or therapies that increase risk according to the doctor.
  • I have taken more than 10 mg of prednisone or other immunosuppressants in the last 14 days.
  • I have had other RRP treatments or investigational drugs in the last 30 days.
  • I have a history of heparin-induced thrombocytopenia or vaccine-induced thrombotic thrombocytopenia.
  • I have active HIV, hepatitis B, or hepatitis C.
  • I am pregnant or nursing.
  • I am allergic to any study drug component.

Summarized in plain language from this trial's official eligibility criteria. The full criteria are further down this page — only the research team can confirm whether you qualify.

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About This Trial

This open-label study evaluates safety, vector shedding, and retreatment efficacy of Zopapogene imadenovec (Zopa) in adults with recurrent respiratory papillomatosis (RRP). Two cohorts will be enrolled (n=30): Cohort 1 to assess the magnitude and duration of adenoviral vector shedding in urine, feces, skin, and nasal tissue; Cohort 2 to assess the complete response rate following retreatment.

Trial Locations
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Eligibility Criteria
Key Inclusion Criteria: * Age 18 years and older. * Clinical diagnosis of recurrent respiratory papillomatosis with histological confirmation of papilloma. * Cohort 1: Treatment-naïve with respect to Zopa. * Cohort 2: Received a minimum of four administrations of Zopa at 5 × 10\^11 PU per injection…
Contacts

Head of Clinical Operations

301-556-9900

clinicaltrials@precigen.com

CONTACT