IMPROVE-IT’s Mixed Blessing: How Low Does LDL Really Need To Go?

Sponsors of injectable PCSK9 biologics address questions about the implications of the IMPROVE-IT study, in which the soon-to-be-generic oral Zetia helped bring down LDL cholesterol to a very low level.

The surprisingly positive result of the IMPROVE-IT study bodes well for LDL cholesterol as a surrogate for better cardiovascular outcomes, but also raises questions about how low to push this marker and how much benefit is achieved.

Results from the IMPROVE-IT study of Merck & Co. Inc.’s oral cholesterol transport inhibitor ezetimibe (single agent Zetia and in combination with simvastatin as Vytorin) as secondary prevention, presented...

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