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- by Eo, Yun-Ho Sep 04, 2026 08:46am
Jascayd, the first new treatment for idiopathic pulmonary fibrosis (IPF) in a decade, is set to enter the Korean market.According to industry sources, Boehringer Ingelheim Korea has submitted a marketing authorization application for Jascayd (nerandomilast), a treatment for idiopathic pulmonary fibrosis and progressive pulmonary fibrosis (PPF), and the Ministry of Food and Drug Safety is now reviewing it.Jascayd's final approval may come as early as this year. When approved, the company would be able to secure an additional asset in its pulmonary fibrosis portfolio alongside Ofev (nintedanib).Jascayd is an oral, selective phosphodiesterase 4B (PDE4B) inhibitor that exerts antifibrotic and immunomodulatory effects through a mechanism distinct from those of existing treatments. The drug is already approved in the United States, China, Japan, the United Kingdom, and Brazil.Its safety and efficacy were demonstrated in the global Phase III FIBRONEER-IPF trial.The study enrolled 1,177 patients with idiopathic pulmonary fibrosis. Its primary endpoint was the change from baseline in forced vital capacity (FVC) at Week 52. FVC, the volume of air that can be forcibly exhaled after taking the deepest possible breath, is a key measure of lung function.The results showed that Jascayd significantly slowed lung function decline compared with placebo. At Week 52, mean FVC had declined by 106 mL in the Jascayd 18 mg group and 122 mL in the 9 mg group, compared with 170 mL in the placebo group. In particular, the 18 mg group began to separate from the placebo group just 2 weeks after treatment initiation, and the difference was maintained through Week 52.Meanwhile, Ofev is currently reimbursed in Korea only for its PPF indication. Boehringer Ingelheim is seeking to expand its reimbursement to IPF, but discussions have made little progress.Meanwhile, IPF has the highest mortality rate among rare diseases in Korea. It is a rare, intractable disease in which interstitial tissue in the lungs progressively becomes fibrotic and stiffens without a known cause. As the lung structures responsible for oxygen exchange are damaged, patients develop chronic cough and shortness of breath, eventually progressing to respiratory failure.The disease also progresses rapidly. While lung function in healthy adults declines by around 10–20 cc per year, patients with IPF lose 150–250 cc annually, equivalent to roughly 10% of their lung function each year.