Improving safety in chemotherapy for cancer patients using genetic testing

A precision medicine approach to improve prediction of severe toxicity in fluorouracil chemotherapy

NIH-funded research University of Iowa · NIH-10909871

This study is looking for ways to make the chemotherapy drug 5-fluorouracil safer for cancer patients by finding genetic markers that can help predict who might have serious side effects, so that doctors can give the right dose for each person, especially for those from different backgrounds.

Quick facts

Grant typeR01 grant
Study typeNIH-funded research
Funding institutionUniversity of Iowa NIH-funded
Lab location1 site (Iowa City, United States)
Project IDNIH-10909871 on NIH RePORTER

What this research studies

This research aims to enhance the safety of the chemotherapy drug 5-fluorouracil (5-FU) by identifying genetic biomarkers that predict severe toxic reactions. Many cancer patients experience life-threatening side effects from standard doses of 5-FU, often due to a deficiency in a specific enzyme. The study will explore additional genetic variants beyond those currently known to better tailor treatment doses to individual patients, particularly focusing on diverse populations. By using these biomarkers, the goal is to optimize dosing and reduce the risk of severe toxicity.

Who could benefit from this research

Good fit: Ideal candidates for this research include cancer patients who are prescribed 5-fluorouracil and may be at risk for severe toxicity due to genetic factors.

Not a fit: Patients who are not receiving 5-fluorouracil chemotherapy or those without genetic predispositions to toxicity may not benefit from this research.

Why it matters

Potential benefit: If successful, this research could significantly reduce the incidence of severe side effects from 5-FU chemotherapy, improving patient safety and treatment outcomes.

How similar studies have performed: Previous research has shown promise in using genetic testing to predict drug toxicity, but this approach aims to expand on those findings with a focus on underrepresented populations.

Where this research is happening

Iowa City, United States

Researchers

About this research

  1. This is an active NIH-funded research project — typically early-stage science, not a clinical trial accepting patient enrollment.
  2. Some NIH-funded labs run parallel clinical studies or seek volunteers for related work. To check, contact the principal investigator or institution listed above.
  3. For full project details, budget, and progress reports, visit the official NIH RePORTER page below.
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.