MedicalTerminology DB
General Medical Terms Cancer & Oncology

ecteinascidin 743

Meaning of ecteinascidin 743: A substance that comes from a type of sea squirt and is being studied in the treatment of cancer.

Definition of ecteinascidin 743

A substance that comes from a type of sea squirt and is being studied in the treatment of cancer. It binds to DNA and causes breaks in the DNA. It also blocks the ability of the cell to repair the DNA damage, and may cause cancer cells to die. Ecteinascidin 743 is also made in the laboratory. It is a type of DNA excision repair inhibitor. Also called ET-743 and trabectedin.

Written and maintained by James Murray Last updated July 21, 2026 Educational reference, not medical advice. Read the limitations.

For learning, not diagnosis. This glossary provides general educational information and is not a substitute for advice from a qualified healthcare professional. If you may be experiencing a medical emergency, contact local emergency services.