Recurrent Respiratory Papillomatosis Trials in the USA

Every industry-sponsored study on the ClinicalTrials.gov registry that lists a US site and is open, about to open, active-but-closed, or enrolling by invitation. This deliberately excludes academic and other non-industry sponsors — the full US registry across all sponsors runs to over 22,000 recruiting studies alone.

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Source: ClinicalTrials.gov. Complete coverage of the industry-sponsored slice — all 9094 matching records are in this view (non-industry sponsors are out of scope by design, not truncated). Synced 17 Sep 2026, 08:23 UTC

9094

Studies in scope

industry-sponsored, all four open statuses

4935

Recruiting now

open to new participants

2188

Lead sponsors

across recruiting studies

Top states

Maryland 2 Georgia 1 Ohio 1

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Lead sponsor

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Target enrolment

Status

Study

Lead sponsor

Phase

Enrol

US states

Start

Recruiting

Zopa Retreatment and Vector Shedding in Adults With RRP

NCT06538480Recurrent Respiratory Papillomatosis, Papillomavirus Infection, Papillomaviridae

Precigen, Inc

Phase 4

Georgia, Maryland, Ohio

2024-07-11

Active, closed

Adjuvant PRGN-2012 in Adult Patients With Recurrent Respiratory Papillomatosis

NCT04724980Recurrent Respiratory Papillomatosis, Papillomavirus Infections, Papillomaviridae

Precigen, Inc

Phase 1/2

Maryland

2021-03-16

Cite this view

Priya Life Science (2026). Clinical trial register: industry-sponsored studies with a US investigative site, filtered. Derived from ClinicalTrials.gov. Retrieved 17 September 2026. https://priyalifescience.com/clinical-trials-usa/condition/recurrent-respiratory-papillomatosis

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Listing here is informational and not medical advice; eligibility is determined by each study team. Compare pay for the teams running these studies in the US Pharma Salary Guide, see who's behind them in the US Company Directory, or track approvals on the FDA Approvals Tracker. For Irish, UK and EU sites, see the Ireland, UK and EU registers.