Antihistamines and Ovarian Cancer Survival: Nationwide Cohort Study and in Vitro Cell Viability Assay

Freija Verdoodt, Christian Dehlendorff, Marja Jäättelä, Robert Strauss, Anton Pottegård, Jesper Hallas, Søren Friis, Susanne K Kjaer*

*Corresponding author for this work

    Research output: Contribution to journalJournal articleResearchpeer-review

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    Antihistamines with cationic amphiphilic drug (CAD) characteristics induce cancer-specific cell death in experimental studies. Epidemiologic evidence is, however, limited. In a Danish nationwide cohort of ovarian cancer patients diagnosed during 2000-2015 (n = 5075), we evaluated the association between filled antihistamine prescriptions and cancer mortality. We used Cox regression models to estimate hazard ratios (HRs) with 95% confidence intervals (CIs) for ovarian cancer mortality. In an in vitro cell viability assay, we evaluated cell death in three ovarian cancer cell lines after treatment with clinically relevant doses of eight antihistamines. In our cohort study, CAD antihistamine use (≥1 prescription; n = 133) was associated with a hazard ratio of 0.63 (95% CI = 0.40 to 0.99) compared to use of non-CAD antihistamines (n = 304), and we found a tendency toward a dose-response association. In our cell viability assay, we found consistent and dose-dependent cytotoxicity for all CAD but not non-CAD antihistamines. In this nationwide cohort study, use of antihistamines with CAD characteristics is associated with a prognostic benefit in ovarian cancer patients.

    Original languageEnglish
    JournalNational Cancer Institute. Journal (Print)
    Issue number9
    Pages (from-to)964-967
    Publication statusPublished - 1. Sep 2020


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