Detailed Narrative
PAP-SIMIUS Commercial Momentum
PAP-SIMIUS continues to demonstrate strong commercial momentum, with Q2 FY26 revenue reaching $53.1 million, a 145% increase from Q1 FY26. This performance is driven by broadening patient access, growing physician adoption across major medical centers and community practices, and increasing utilization. The full FDA approval and broad label, which does not impose a minimum number of prior surgeries, allows physicians to consider PAP-SIMIUS earlier in the treatment paradigm, leading to use across a wide range of RRP patients, not just severe cases.
PAP-SIMIUS Durability and Market Exclusivity
The clinical profile of PAP-SIMIUS, including its transformative efficacy, durability, and favorable safety, continues to resonate strongly. Long-term follow-up data shows 83% of patients in ongoing complete response beyond three years, with some beyond four years surgery-free, having received no other RRP treatment after PAP-SIMIUS. The FDA has granted PAP-SIMIUS seven-year market exclusivity for adult RRP patients, extending to August 2032, which provides important protection against future competition and supports the long-term commercial value.
Payer Coverage and J-Code Impact
Payer coverage for PAP-SIMIUS remains exceptional, with an additional 18 million covered lives in Q2 FY26, bringing the total commercial and government coverage to approximately 315 million lives in the U.S. The permanent J-code, effective April 1st, has been particularly important in accelerating adoption, providing a standard reimbursement pathway, streamlining claims processing, and reducing uncertainty for sites. This has helped activate additional accounts and supported continued adoption across academic centers and community practices.
PRGN 2009 and Adenovirus Platform
Precigen is advancing PRGN 2009, an investigational immunotherapy using the same adenovirus platform as PAP-SIMIUS, targeting HPV 16 and HPV 18-related cancers (head and neck, cervical cancers). HPV-related malignancies account for nearly 5% of all cancer cases worldwide. PRGN 2009 is currently in multiple Phase 2 clinical trials in combination with PEMBRO, with updated data for head and neck cancer expected later this year. The success of PAP-SIMIUS and progress of PRGN 2009 establish proof of principle for the Ad-Verse platform, which the company aims to maximize across various indications.
RRP Patient Population and Treatment Approach
The prevalent RRP patient pool in the U.S. is estimated at 27,000. The disease tends to worsen over time⏳, as surgeries do not address the underlying HPV infection. PAP-SIMIUS, by targeting the HPV 6 or 11 driver, offers a differentiated approach. Physicians are increasingly prescribing PAP-SIMIUS earlier in the disease course to prevent irreversible damage, treating patients across all severities, not just the most severe cases, indicating a significant runway for continued growth.