science

Iniparib

Iniparib 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 Iniparib rather than just read about it. In short: Iniparib (INN, previously known as BSI 201) was a drug candidate for cancer treatment. It was originally believed to act as an irreversible inhibitor of PARP1 (hence, a PARP inhibitor) and possibly other enzymes through covalent modification, but its effects against PARP were later disproven.

Key takeaways

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

Reference excerpt

Iniparib (INN, previously known as BSI 201) was a drug candidate for cancer treatment. It was originally believed to act as an irreversible inhibitor of PARP1 (hence, a PARP inhibitor) and possibly other enzymes through covalent modification, but its effects against PARP were later disproven. It underwent clinical trials for treatment of some types of breast cancer, but was discontinued after disappointing phase III clinical trials.

History Iniparib was the first putative PARP inhibitor to commence phase III clinical trials. The first was for breast cancer, another was for squamous-cell lung cancer. Preliminary results in June 2009 on triple-negative breast cancer were promising. Later results showed increased median survival of triple-negative breast cancer patients from 7.7 to 12.2 months. In 2009, the FDA began fast-tracking the new drug application of iniparib for triple-negative breast cancer. However, phase III results disclosed in January 2011 were disappointing. Iniparib was also studied as a potential chemotherapeutic agent in the fight against malignant glioma, including glioblastoma. Glioma is a resilient type of primary brain tumor (not metastatic) that currently has limited effective therapies, especially for patients whose tumors are in an inoperable location of the brain, such as the interior of the brainstem. During the 2013 American Society of Clinical Oncology conference, Sanofi disclosed that iniparib failed to help lung-cancer patients in a late-stage trial, prompting the company to end research into the once-promising compound and take a $285 million charge.

References

Illustrations

Worked examples

Example 1 — a first encounter with Iniparib

Start with the simplest possible case. Write down what Iniparib 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 Iniparib 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 Iniparib 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 Iniparib

In research: Iniparib 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 Iniparib 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: Iniparib is common in secondary-school and first-year university syllabi. It links to neighbouring topics Abandoned drugs, Benzamides, Drugs not assigned an ATC code, so understanding it makes those chapters shorter.
In everyday life: Look for Iniparib 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 Iniparib in 20 minutes

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

Frequently asked questions

What is Iniparib in simple terms?

Why does Iniparib 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 Iniparib?

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 Iniparib.