PureTech Announces Successful End-of-Phase 2 Meeting with FDA for Deupirfenidone (LYT-100) in Idiopathic Pulmonary Fibrosis
Feedback from
Phase 3 SURPASS-IPF trial remains on track to be initiated by PureTech’s Founded Entity, Celea Therapeutics, in the first half of 2026
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“Our discussion with the FDA was productive and provided helpful feedback on key elements of our Phase 3 program and the overall data expectations for registration,” said
The pivotal Phase 3 SURPASS-IPF trial will be a global, randomized, double-blind, head-to-head trial comparing deupirfenidone 825 mg three times-a-day (TID) to pirfenidone 801 mg TID in adults with IPF who are not on background therapy. The primary efficacy endpoint is the change from baseline in absolute forced vital capacity (FVC) at week 52, which will assess the superiority of deupirfenidone compared with pirfenidone. The 52-week trial will use the same active comparator and dosing regimen as the Phase 2b ELEVATE-IPF trial, providing continuity and confidence that the favorable safety profile and strong treatment effect observed previously can be replicated and confirmed in a larger, global population. Based on feedback from the FDA,
The EOP2 meeting was supported by results from the global Phase 2b randomized, double-blind, active- and placebo-controlled, dose-ranging ELEVATE IPF trial. In that trial, participants treated with deupirfenidone 825 mg TID experienced a slower rate of lung function decline, as measured by change from baseline of Forced Vital Capacity (FVC), at 26 weeks versus those who were treated with pirfenidone 801 mg TID or placebo (-21.5 mL vs. -51.6 mL vs. -112.5 mL, respectively), with a 91 mL difference between deupirfenidone 825 mg and placebo at 26 weeks. Following the completion of the blinded portion of the trial, 170 participants (more than 90%) enrolled in the open-label extension. Those who continued treatment with deupirfenidone 825 mg TID maintained a robust treatment effect and experienced an overall FVC decline of -32.8 mL over a 52-week period,1 which is similar to the expected natural decline in lung function in healthy older adults over that time (approximately -30.0 mL to -50.0 mL).2
PureTech’s Founded Entity, Celea Therapeutics, expects to finalize financing in early 2026 to support the initiation of the Phase 3 SURPASS-IPF trial in the first half of 2026.
About Deupirfenidone (LYT-100)
Deupirfenidone (LYT-100) is in development as a potential new standard of care for the treatment of idiopathic pulmonary fibrosis (IPF). It is a next generation antifibrotic and a deuterated form of pirfenidone, one of three FDA-approved therapies for IPF. The uptake and adherence to approved antifibrotics has historically been limited by a tradeoff between modest efficacy and tolerability, and only ~25% of people with IPF in the
Deupirfenidone may overcome these limitations. In the global Phase 2b ELEVATE IPF trial, deupirfenidone demonstrated the potential to stabilize lung function decline over at least 26 weeks as a monotherapy while maintaining a favorable safety and tolerability profile. Initial data from an ongoing open-label extension study suggest this effect may be sustained through at least 52 weeks. These findings support the potential for deupirfenidone to offer a meaningful advance for people living with this progressive and deadly disease. Beyond IPF, deupirfenidone may also address multiple underserved fibrotic conditions, including progressive fibrosing interstitial lung diseases.
About Idiopathic Pulmonary Fibrosis (IPF)
Idiopathic pulmonary fibrosis (IPF) is a rare, progressive, and fatal lung disease characterized by irreversible scarring of lung tissue that leads to a steady decline in lung function. Median survival following diagnosis is estimated to be two to five years, and currently there is no cure.4
About Celea Therapeutics
Celea Therapeutics is dedicated to advancing transformative treatments for people with serious respiratory diseases. Drawn from the Latin word for “sky,” the name reflects the company’s mission to rise above the status quo and deliver therapies that change lives. The company’s lead program, deupirfenidone (LYT-100), is a Phase 3-ready therapeutic candidate with the potential to set a new standard of care for idiopathic pulmonary fibrosis (IPF) and other fibrotic lung diseases.
Celea was founded by and is currently a wholly-owned subsidiary of
About
For more information, visit www.puretechhealth.com or connect with us on X (formerly Twitter) @puretechh.
Cautionary Note Regarding Forward-Looking Statements
This press release contains statements that are or may be forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. All statements contained in this press release that do not relate to matters of historical fact should be considered forward-looking statements, including without limitation statements that relate to continued development of and regulatory interactions related to deupirfenidone, the potential of deupirfenidone in IPF and other indications, our expectations around our therapeutic candidates and approach towards addressing major diseases, our plans to advance our programs and deliver on our milestones, our future plans, prospects, developments, and strategies. The forward-looking statements are based on current expectations and are subject to known and unknown risks, uncertainties and other important factors that could cause actual results, performance and achievements to differ materially from current expectations, including, but not limited to, those risks, uncertainties and other important factors described under the caption "Risk Factors" in our Annual Report on Form 20-F for the year ended
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1 Integrated analysis of double-blind (26 weeks) and initial open-label extension data from Phase 2b ELEVATE IPF trial as of |
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2 Valenzuela, C., Bonella, F., Moor, C., Weimann, G., Miede, C., Stowasser, S., & Maher, T. (2024, September). Decline in forced vital capacity (FVC) in subjects with idiopathic pulmonary fibrosis (IPF) and progressive pulmonary fibrosis (PPF) compared with healthy references [Poster presentation]. |
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3 Dempsey, |
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4 Fisher, M., Nathan, S. D., Hill, C., Marshall, J., |
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