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Drug interactions in oncology: how common are they?

R P Riechelmann1, A Del Giglio

  • 1Internal Medicine, Federal University of Sao Paulo, Sao Paulo, Brazil. rachelri@terra.com.br

Annals of Oncology : Official Journal of the European Society for Medical Oncology
|August 29, 2009
PubMed
Abstract

Insights

Approximately one-third of cancer patients face risks from drug-drug interactions (DDIs). While potential DDIs are common, data on their clinical impact in oncology remains limited.

Area of Science:

  • Oncology
  • Pharmacology
  • Clinical Medicine

Background:

  • Drug-drug interactions (DDIs) represent a significant challenge in medical oncology.
  • Systematic review of DDI frequency in cancer patients is crucial for patient safety.

Purpose of the Study:

  • To systematically review the existing literature on the frequency of drug-drug interactions in oncology.
  • To assess the prevalence of both potential and clinically consequential DDIs in cancer care.

Main Methods:

  • Searched PubMed for eligible articles.
  • Included abstracts from major oncology meetings to capture recent findings.

Main Results:

  • Eight studies reported DDI frequencies.
  • One-third of patients exposed to potential DDIs, commonly involving warfarin and anticonvulsants.
  • 2% of hospitalized cancer patients admitted due to a DDI.

Conclusions:

  • A substantial proportion of ambulatory cancer patients are at risk of DDIs.
  • Limited data exists regarding the clinical consequences of DDIs in this population.

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