Novartis Cosentyx Shows Sustained Remission In Polymyalgia Rheumatica
Novartis said Phase III REPLENISH trial results for Cosentyx in polymyalgia rheumatica, published in the New England Journal of Medicine and presented at EULAR 2026, showed about twice as many patients achieved sustained remission versus placebo and had significant steroid reductions. The trial met primary/secondary endpoints for both 150 mg and 300 mg arms through week 52, with no new safety signals. Novartis filed for regulatory review in the U.S., EU and Japan.

Positive Phase III readout for Cosentyx in PMR supports the probability of regulatory approval and expands the addressable market beyond current indications.
Novartis reported Phase III REPLENISH data for Cosentyx in PMR, showing higher sustained remission vs placebo and reduced steroid use.
Near-term upside bias possible on approval-probability and label-expansion expectations, with volatility around regulatory/next-trial details.
Background
PMR treatment relies heavily on long-term steroids, creating a need for steroid-sparing options with durable remission.
Why it matters
Successful REPLENISH endpoints plus consistent safety and regulatory submissions increase the likelihood of a meaningful label expansion for Cosentyx, a core value driver for Novartis.
Market relevance
New Phase III efficacy and steroid-sparing results for Cosentyx in PMR are a direct fundamental catalyst for Novartis ahead of regulatory review.
Market effects
Reinforces IL-17A pathway competitiveness in inflammatory rheumatology and may lift sentiment for other late-stage immunology programs.
Regulatory filings planned for the U.S., EU, and Japan can concentrate attention on upcoming review timelines and label-expansion expectations.
Positive PMR efficacy data can affect global pricing/competition expectations for steroid-sparing therapies.
Alternative perspectives
Even with positive Phase III results, approval timing, payer dynamics, and comparative effectiveness vs existing steroid regimens can temper the stock reaction.
The article doesn’t quantify effect size beyond “twice as many” or discuss subgroup durability, which can matter for regulatory and real-world adoption.
Key entities
- drugCosentyx
IL-17A inhibitor evaluated in Phase III REPLENISH for polymyalgia rheumatica.
- clinical_trialREPLENISH trial
Phase III study reporting sustained remission and reduced steroid use vs placebo in PMR.
- conferenceEULAR Congress 2026
Presentation venue for the PMR Phase III data.

