Potential Drug-drug Interactions at a Referral Pediatric Oncology Ward in Iran: A Cross-sectional Study
Faezeh Tavousi1, Alireza Sadeghi2, Ali Darakhshandeh2
1Departments of Clinical Pharmacy.
Insights
Drug-drug interactions (DDIs) are common in pediatric cancer patients, with pharmacodynamic interactions being most frequent. Age, sex, and medication number influenced DDI occurrence, highlighting the need for further research.
Area of Science:
- Oncology
- Pharmacology
- Pediatrics
Background:
- Drug-drug interactions (DDIs) are frequently reported but understudied in pediatric oncology.
- Understanding DDIs in this vulnerable population is crucial for patient safety.
Purpose of the Study:
- To determine the frequency and demographic factors associated with moderate and major DDIs in pediatric oncology patients.
- To identify common drug classes involved in DDIs within this patient group.
Main Methods:
- A 6-month study (2017) at a pediatric oncology ward included 115 patients receiving at least two concomitant medications.
- Potential DDIs were identified using Lexi-Interact software.
- Data on patient demographics and drug classes were collected.
Main Results:
- 194 moderate or major DDIs were detected among 115 patients.
- Pharmacodynamic interactions accounted for 56.4% of DDIs.
- Corticosteroids, antimetabolites, and antiemetics were the most frequent medication classes involved.
- Aminoglycosides and third-generation cephalosporins showed the most common non-anticancer DDI; doxorubicin and cyclophosphamide were the only anticancer DDI pair.
- Age, sex, and number of medications correlated with DDIs.
Conclusions:
- Moderate to major DDIs are frequent in pediatric cancer patients.
- Further studies are needed to evaluate the clinical and economic impact of these DDIs.
Abstract:
Incidence of drug-drug interactions (DDIs) has been widely reported; however, such reports in pediatric oncology patients still remain scarce. We studied frequency and demographic correlates of moderate and major DDIs at a pediatric oncology ward in Isfahan, Iran. All pediatric oncology patients admitted to the Omid hospital during a 6-month period (2017) who received at least 2 anticancer or non-anticancer drugs concomitantly were included in our study. Potential DDIs between anticancer and non-anticancer drugs during hospitalization was identified using Lexi-Interact on-line software. We detected 194 DDIs with moderate or major severity for our included 115 patients. Mechanistically, most of DDIs (56.4%) were pharmacodynamic. Systematic use of corticosteroids (82.0%), antimetabolites (77.0%), and antiemetic drugs (69.5%) were the most frequent medication classes responsible for detected DDIs. The interaction between aminoglycosides and the third generation cephalosporins was the most common (13.9%) non-anticancer DDI. The only identified interaction between 2 anticancer drugs was doxorubicin with cyclophosphamide. Age, sex, and the number of administered medications were associated with DDIs. Potential moderate or major DDIs occur frequently among pediatric cancer patients. More studies are needed to assess clinical and economic implications of DDIs in pediatric oncology patients.
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