science

Ocaratuzumab

Ocaratuzumab 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 Ocaratuzumab rather than just read about it. In short: Ocaratuzumab (AME-133v, LY2469298) is a humanized monoclonal antibody designed for the treatment of cancer and autoimmune disorders. The antibody is engineered for enhanced affinity to the CD20 antigen on B-lymphocytes, increased antibody-dependent cell-mediated cytotoxicity (ADCC), and for improved treatment of low-affinity FcγRIIIa allotypes.

Key takeaways

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

Reference excerpt

Ocaratuzumab (AME-133v, LY2469298) is a humanized monoclonal antibody designed for the treatment of cancer and autoimmune disorders. The antibody is engineered for enhanced affinity to the CD20 antigen on B-lymphocytes, increased antibody-dependent cell-mediated cytotoxicity (ADCC), and for improved treatment of low-affinity FcγRIIIa allotypes. Phase I/II trials in relapsed/refractory follicular lymphoma have been completed in the United States (US) and Japan, and a Phase I trial was conducted in US rheumatoid arthritis patients. Phase III development in relapsed follicular lymphoma patients is underway. Many patients relapse following currently available treatments, and a significant need for new effective treatment exists, particularly for patients with low-affinity FcγRIIIa allotypes. In pre-clinical studies, ocaratuzumab was shown to have 13 to 20 fold greater affinity for CD20 and 6 fold more potent ADCC as compared to rituximab. Additional development in other oncology and rheumatology indications will also be pursued, as well as subcutaneous formations for patient convenience. This drug is currently being developed by Mentrik Biotech, LLC.

History AME-133v is a humanized IgG1 monoclonal antibody targeting the CD20 antigen on both healthy and malignant B-lymphocytes, engineered at Applied Molecular Evolution. Libraries of antibody Fab (fragment, antigen binding) regions were generated with codon substituted variations of the antibody complementarity determining regions (CDRs) inserted into human antibody light and heavy chain germline frameworks (data on file at Mentrik Biotec). Variants were expressed and selected based on increased binding affinity to CD20 (data on file at Mentrik Biotech). A variable region with increased binding activity for CD20 was selected and developed as AME-133v (data on file at Mentrik Biotech). AME-133v was purchased by Eli Lilly, received the name LY2469298, and a Phase I/II clinical trial in follicular lymphoma was conducted in the U.S. as well as a Phase I clinical trial in rheumatoid arthritis initiated in the U.S. (data shown below). A Phase I clinical trial in follicular lymphoma was also conducted in Japan. AME-133v was purchased by Mentrik, Biotech in 2011 and received the generic name ocaratuzumab from the United States Adopted Name Council in December 2011.

References

Worked examples

Example 1 — a first encounter with Ocaratuzumab

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

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

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

Frequently asked questions

What is Ocaratuzumab in simple terms?

Why does Ocaratuzumab 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 Ocaratuzumab?

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 Ocaratuzumab.