Methods for screening compounds for proarrhythmic risk and...

Drug – bio-affecting and body treating compositions – In vivo diagnosis or in vivo testing – Testing efficacy or toxicity of a compound or composition

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Reexamination Certificate

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07396524

ABSTRACT:
Methods for screening compounds for their potential to induce or inhibit a cardiac arrhythmia are disclosed. The methods comprise determining the ratio of the time constant (τ) of ICa,Lrecovery in tissue expressing the L-type calcium channel or any subunit or combination thereof of the L-type calcium channel treated with a test compound to the ventricular repolarization time of cardiac tissue treated with a test compound. The methods further comprise determining an arrhythmic risk score for a specified dose of a test compound.

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