Related Experiment Video
Updated: May 31, 2026

Chemotherapy-induced Vascular Toxicity - Real-time In vivo Imaging of Vessel Impairment
Published on: January 7, 2015
Cardiovascular toxicity profiles of vascular-disrupting agents
Ishwaria M Subbiah1, Daniel J Lenihan, Apostolia M Tsimberidou
1Department of Internal Medicine, University of Texas Medical School at Houston, Houston, Texas, USA.
Background:
Vascular-disrupting agents (VDAs) represent a new class of chemotherapeutic agent that targets the existing vasculature in solid tumors. Preclinical and early-phase trials have demonstrated the promising therapeutic benefits of VDAs but have also uncovered a distinctive toxicity profile highlighted by cardiovascular events.
Methods:
We reviewed all preclinical and prospective phase I-III clinical trials published up to August 2010 in MEDLINE and the American Association of Cancer Research and American Society of Clinical Oncology meeting abstracts of small-molecule VDAs, including combretastatin A4 phosphate (CA4P), combretastatin A1 phosphate (CA1P), MPC-6827, ZD6126, AVE8062, and ASA404.
Results:
Phase I and II studies of CA1P, ASA404, MPC-6827, and CA4P all reported cardiovascular toxicities, with the most common cardiac events being National Cancer Institute Common Toxicity Criteria (version 3) grade 1-3 hypertension, tachyarrhythmias and bradyarrhythmias, atrial fibrillation, and myocardial infarction. Cardiac events were dose-limiting toxicities in phase I trials with VDA monotherapy and combination therapy.
Conclusions:
Early-phase trials of VDAs have revealed a cardiovascular toxicity profile similar to that of their vascular-targeting counterparts, the angiogenesis inhibitors. As these agents are added to the mainstream chemotherapeutic arsenal, careful identification of baseline cardiovascular risk factors would seem to be a prudent strategy. Close collaboration with cardiology colleagues for early indicators of serious cardiac adverse events will likely minimize toxicity while optimizing the therapeutic potential of VDAs and ultimately enhancing patient outcomes.
Insights
Vascular-disrupting agents (VDAs) show promise in cancer treatment but can cause cardiovascular events. Careful patient selection and cardiology collaboration are crucial for safe VDA use.
Area of Science:
- Oncology
- Cardiology
- Pharmacology
Background:
- Vascular-disrupting agents (VDAs) target tumor vasculature.
- Early trials show VDA therapeutic potential but reveal cardiovascular toxicities.
Purpose of the Study:
- To review preclinical and clinical trial data on VDA-induced cardiovascular events.
- To characterize the cardiovascular toxicity profile of small-molecule VDAs.
Main Methods:
- Systematic review of preclinical and Phase I-III clinical trials up to August 2010.
- Included studies on combretastatin A4 phosphate (CA4P), combretastatin A1 phosphate (CA1P), MPC-6827, ZD6126, AVE8062, and ASA404.
Main Results:
- Cardiovascular toxicities were reported in Phase I/II trials of CA1P, ASA404, MPC-6827, and CA4P.
- Common cardiac events included hypertension, tachyarrhythmias, bradyarrhythmias, atrial fibrillation, and myocardial infarction.
- Cardiac events were dose-limiting in VDA monotherapy and combination trials.
Conclusions:
- VDAs exhibit a cardiovascular toxicity profile similar to angiogenesis inhibitors.
- Identifying baseline cardiovascular risk factors is essential for VDA therapy.
- Collaboration with cardiologists can mitigate VDA toxicity and improve patient outcomes.
Related Concept Videos
Cardiovascular Drugs: Classification based on Therapeutic Indications
Drug Toxicity: Risk factors
Drug Toxicity: Dose-Dependent Reactions
Drug Toxicity: Overview
Drug toxicity: Drug–Drug Interaction
Antihypertensive Drugs: Vasodilators

