chemistry

Larotrectinib

Larotrectinib is a chemistry 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 Larotrectinib rather than just read about it. In short: Larotrectinib, sold under the brand name Vitrakvi, is a medication for the treatment of cancer. It is an inhibitor of tropomyosin kinase receptors TrkA, TrkB, and TrkC.

Key takeaways

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

Reference excerpt

Larotrectinib, sold under the brand name Vitrakvi, is a medication for the treatment of cancer. It is an inhibitor of tropomyosin kinase receptors TrkA, TrkB, and TrkC. It was discovered by Array BioPharma and licensed to Loxo Oncology in 2013. Larotrectinib was initially awarded orphan drug status in 2015, for soft tissue sarcoma, and breakthrough therapy designation in 2016 for the treatment of metastatic solid tumors with NTRK fusion. Some clinical trial results were announced in 2017. On 26 November 2018, Larotrectinib was approved by the FDA. Larotrectinib was the first drug to be specifically developed and approved to treat any cancer containing certain mutations, as opposed to cancers of specific tissues (i.e., the approval is "tissue agnostic"). Several earlier drugs, including pembrolizumab, were eventually approved by the FDA for treatment of specific mutations independent of the type of cancer, but those drugs had been initially developed for specific cancer types. The U.S. Food and Drug Administration (FDA) considers it to be a first-in-class medication. Larotrectinib was approved for medical use in the European Union in September 2019. It was approved for medical use in Australia in August 2020.

Research Phase II clinical trials evaluating the drug for efficacy and safety in treating several types of solid tumors are ongoing.

References

External links "Larotrectinib sulfate". National Cancer Institute. 6 December 2018. "Larotrectinib sulfate". NCI Dictionary of Cancer Terms. National Cancer Institute.

Illustrations

Worked examples

Example 1 — a first encounter with Larotrectinib

Start with the simplest possible case. Write down what Larotrectinib claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In chemistry, 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 Larotrectinib 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 Larotrectinib 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 Larotrectinib

In research: Larotrectinib appears in chemistry 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 Larotrectinib 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: Larotrectinib is common in secondary-school and first-year university syllabi. It links to neighbouring topics 2,5-Difluorophenyl compounds, Antineoplastic and immunomodulating drug stubs, Drugs developed by Bayer, so understanding it makes those chapters shorter.
In everyday life: Look for Larotrectinib 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 Larotrectinib in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Larotrectinib 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 Larotrectinib out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Larotrectinib in simple terms?

Larotrectinib, sold under the brand name Vitrakvi, is a medication for the treatment of cancer. It is an inhibitor of tropomyosin kinase receptors TrkA, TrkB, and TrkC.

Why does Larotrectinib matter?

Because it connects several chemistry 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 Larotrectinib?

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 Larotrectinib.