Nancy Retzlaff, chief commercial officer for Turing Pharmaceuticals, was asked how much the drug Daraprim costs at the House Oversight and Government Reform Committee on Capitol Hill on Thursday. Brendan Smialowski/AFP/Getty Images hide caption

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House Hearing Probes The Mystery Of High Drug Prices That 'Nobody Pays'

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FDA Approval Could Turn A Free Drug For A Rare Disease Pricey

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Flemming Ornskov, CEO of Shire, says the company's offer for ViroPharma is part of a broader push into orphan drugs. Bloomberg via Getty Images hide caption

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