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Erschienen in: Cancer Chemotherapy and Pharmacology 6/2012

01.06.2012 | Original Article

A single-dose placebo- and moxifloxacin-controlled study of the effects of temsirolimus on cardiac repolarization in healthy adults

verfasst von: Joseph P. Boni, Cathie Leister, Bruce Hug, Jaime Burns, Daryl Sonnichsen

Erschienen in: Cancer Chemotherapy and Pharmacology | Ausgabe 6/2012

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Abstract

Purpose

Temsirolimus, a selective inhibitor of mammalian target of rapamycin, is an approved treatment for patients with advanced renal cell carcinoma (RCC). This study assessed the effect of intravenous (i.v.) temsirolimus 25 mg, the recommended dose for patients with RCC, on the corrected QT (QTc) interval.

Methods

This 3-period crossover study enrolled healthy subjects. In periods 1 and 2, subjects received i.v. placebo either alone or with open-label oral moxifloxacin. In period 3, subjects received a single dose of temsirolimus 25 mg. The primary statistical objective was to estimate the effect of temsirolimus compared with placebo on change from time-matched baseline QTc at the end of infusion (0.5 h). Assay sensitivity was evaluated by the effect of moxifloxacin on change from time-matched baseline QTc compared with placebo.

Results

In total, 58 subjects were enrolled. Temsirolimus had no effect on QTc interval in the primary analysis. At 11 of 12 secondary time points, the upper bound for the temsirolimus QTc 90% confidence intervals for the time-matched change from baseline difference from placebo was <10 ms, with no evidence of QTc trends or relationship to concentrations of temsirolimus or its major metabolite, sirolimus. Moxifloxacin, the positive control, produced a significant increase in the QTc interval compared with placebo 0.5–4 h post-dose (P < 0.0001). No subject had a QTc interval exceeding 450 ms or a change from baseline of >30 ms.

Conclusions

Therapeutic exposure to temsirolimus is not associated with clinically significant changes in QTc intervals in healthy adults.
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Metadaten
Titel
A single-dose placebo- and moxifloxacin-controlled study of the effects of temsirolimus on cardiac repolarization in healthy adults
verfasst von
Joseph P. Boni
Cathie Leister
Bruce Hug
Jaime Burns
Daryl Sonnichsen
Publikationsdatum
01.06.2012
Verlag
Springer-Verlag
Erschienen in
Cancer Chemotherapy and Pharmacology / Ausgabe 6/2012
Print ISSN: 0344-5704
Elektronische ISSN: 1432-0843
DOI
https://doi.org/10.1007/s00280-012-1845-7

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