Trastuzumab

Part of speech: noun

Definitions

1. A monoclonal antibody used in targeted cancer therapy to treat specific types of breast and stomach cancers by binding to the HER2 receptor and inhibiting tumor growth
2. A biologic drug that functions by attaching to the HER2 protein on cancer cells to prevent their proliferation, commonly prescribed for HER2-positive breast and gastric cancer patients
3. An engineered antibody medication designed to target and block the HER2 receptor on malignant cells, thereby slowing the progression of certain breast and stomach cancers in clinical treatment settings

Etymology: Trastuzumab is a constructed name, built from parts that each carry a meaning. The stem "tu" stands for "tumor," which is where the drug is aimed: it targets the HER2 protein found on certain breast cancer cells. The ending "-zumab" is the standard suffix assigned to humanized monoclonal antibodies, so anyone reading the name can tell at a glance that the drug is an antibody built from human and mouse components. The first syllables, "tras," are a prefix with no fixed meaning, chosen to make the name distinct from other drugs. The point of this naming scheme is safety. Drug names in this family follow a pattern that lets pharmacists and clinicians recognise the drug's class, and the pattern is meant to prevent confusion between look-alike names. The "-zumab" ending marks the drug as a monoclonal antibody, and the middle syllable marks its target, so the whole name works as a compact description of what the drug does.

Synonyms: Herceptin, monoclonal antibody, immunotherapy drug