Last reviewed · How we verify

Ado Trastuzumab Emtansine

Medstar Health Research Institute · FDA-approved active Small molecule

Ado trastuzumab emtansine is an antibody-drug conjugate that binds HER2-positive cancer cells and delivers a microtubule-disrupting toxin directly into them.

Ado trastuzumab emtansine is an antibody-drug conjugate that binds HER2-positive cancer cells and delivers a microtubule-disrupting toxin directly into them. Used for HER2-positive metastatic breast cancer, HER2-positive early breast cancer (adjuvant treatment), HER2-positive gastric or gastroesophageal junction adenocarcinoma.

At a glance

Generic nameAdo Trastuzumab Emtansine
Also known asKadcyla
SponsorMedstar Health Research Institute
Drug classAntibody-drug conjugate (ADC)
TargetHER2 (human epidermal growth factor receptor 2)
ModalitySmall molecule
Therapeutic areaOncology
PhaseFDA-approved

Mechanism of action

The drug combines trastuzumab (an anti-HER2 monoclonal antibody) with emtansine, a microtubule-disrupting agent, via a stable linker. The antibody portion recognizes and binds HER2 on cancer cell surfaces, allowing internalization and release of the cytotoxic payload inside the cell, which disrupts microtubule formation and triggers apoptosis. This targeted delivery mechanism reduces systemic toxicity compared to conventional chemotherapy.

Approved indications

Common side effects

Key clinical trials

Primary sources

Every claim on this page is sourced from regulatory or scientific primary sources. See our editorial policy for full methodology.

SourceUsed for
ClinicalTrials.govTrial enrolment, design, endpoints, results

Competitive intelligence

For the full competitive landscape — auto-detected comparators, recent regulatory actions across the set, upcoming PDUFA, patent timeline, sponsor landscape: