Drug Repositioning in Doxorubicin-Induced Cardiotoxicity Protection

Doxorubicin (DOX) is an effective drug for the treatment of solid tumors and hematological malignancies in both children and adults. The most serious side effect is doxorubicin-induced cardiotoxicity (DIC), which can lead to cardiomyopathy and irreversible and highly fatal cardiac decompensation. The precise mechanisms underlying DIC are not fully understood, and currently, no fully effective preventive or therapeutic strategies exist. Drug repositioning has emerged as a promising approach to mitigate DIC, leveraging existing safety profiles while potentially reducing the time and cost of clinical translation. In this review, we summarize current evidence on drug repurposing for DIC, with a particular focus on the antidepressant paroxetine, which shows potential cardioprotective effects beyond its established role as a selective serotonin reuptake inhibitor (SSRI).