science

Nerandomilast

Nerandomilast is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Nerandomilast rather than just read about it. In short: Nerandomilast, sold under the brand name Jascayd, is a medication used for the treatment of idiopathic pulmonary fibrosis and progressive pulmonary fibrosis. It is a phosphodiesterase 4 (PDE4) inhibitor.

Key takeaways

Nerandomilast belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Nerandomilast to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Nerandomilast from memory before moving on to harder problems.

Reference excerpt

Nerandomilast, sold under the brand name Jascayd, is a medication used for the treatment of idiopathic pulmonary fibrosis and progressive pulmonary fibrosis. It is a phosphodiesterase 4 (PDE4) inhibitor. It is taken by mouth. Common side effects include diarrhea, decreased weight, decreased appetite, and nausea. Nerandomilast was approved for medical use in the United States in October 2025. The US Food and Drug Administration considers it to be a first-in-class medication.

Medical uses Nerandomilast is indicated for the treatment of idiopathic pulmonary fibrosis and for the treatment of progressive pulmonary fibrosis. Idiopathic pulmonary fibrosis affects the tissue surrounding the air sacs, or alveoli, in the lungs. It develops when this lung tissue becomes thick and stiff. Over time, these changes can cause permanent lung scarring (fibrosis) that makes it more difficult to breathe. Progressive pulmonary fibrosis is a chronic disease characterized by gradual, irreversible scarring of the lungs, which can lead to progressive breathing difficulties. Progressive pulmonary fibrosis is an umbrella term that can describe progressive lung scarring in many interstitial lung diseases.

Side effects Side effects include diarrhea, decreased weight, decreased appetite, and nausea.

History The efficacy of nerandomilast for the treatment of idiopathic pulmonary fibrosis was evaluated in two randomized, double-blind, placebo-controlled trials of adults with idiopathic pulmonary fibrosis. The efficacy of nerandomilast for the treatment of progressive pulmonary fibrosis was demonstrated in FIBRONEER-ILD (NCT05321082), a randomized, double-blind, placebo-controlled study that enrolled 1,178 adults with progressive pulmonary fibrosis. Participants were randomly assigned 1:1:1 to receive twice daily administration of nerandomilast 9 mg, nerandomilast 18 mg, or placebo, for at least 52 weeks.

Society and culture

Legal status Nerandomilast was approved for medical use in the United States in October 2025. The US Food and Drug Administration granted the application for nerandomilast an orphan drug designation for the idiopathic pulmonary fibrosis indication and breakthrough therapy designation for the progressive pulmonary fibrosis indication. In May 2026, the Committee for Medicinal Products for Human Use of the European Medicines Agency adopted a positive opinion, recommending the granting of a marketing authorization for the medicinal product Jascayd, intended for the treatment of adults with idiopathic pulmonary fibrosis or adults with progressive pulmonary fibrosis. The applicant for this medicinal product is Boehringer Ingelheim International GmbH.

Names Nerandomilast is the international nonproprietary name. Nerandomilast is sold under the brand name Jascayd.

References

External links Clinical trial number NCT05321069 for "A Study to Find Out Whether BI 1015550 Improves Lung Function in People With Idiopathic Pulmonary Fibrosis (IPF)" at ClinicalTrials.gov Clinical trial number NCT04419506 for "A Study to Test How Taking BI 1015550 for 12 Weeks Affects Lung Function in People With Idiopathic Pulmonary Fibrosis (IPF)" at ClinicalTrials.gov Clinical trial number NCT05321082 for "A Study to Find Out Whether BI 1015550 Improves Lung Function in People With Progressive Fibrosing Interstitial Lung Diseases (PF-ILDs)" at ClinicalTrials.gov

Illustrations

Worked examples

Example 1 — a first encounter with Nerandomilast

Start with the simplest possible case. Write down what Nerandomilast claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Nerandomilast before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Nerandomilast ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Nerandomilast

In research: Nerandomilast appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Nerandomilast in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Nerandomilast is common in secondary-school and first-year university syllabi. It links to neighbouring topics Chloropyrimidines, Cyclobutanes, Immunosuppressants, so understanding it makes those chapters shorter.
In everyday life: Look for Nerandomilast outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Nerandomilast in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Nerandomilast means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Nerandomilast out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Nerandomilast in simple terms?

Why does Nerandomilast matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Nerandomilast?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Nerandomilast.