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Back on top GeneDx — #2 (Small) By Tia Ghose GeneDx rocketed to second place among small companies this year after not making the rankings in 2008 or 2007, and placing tenth in 2006. The company develops genetic tests that help clinicians identify over 200 rare heritable disorders. In 2006, GeneDx was acquired by Bioreference Laboratories, a diagnostic company located in New Jersey. Although the two have "completely separate" day-to-day operations, the a

Written byTia Ghose
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By Tia Ghose

GeneDx rocketed to second place among small companies this year after not making the rankings in 2008 or 2007, and placing tenth in 2006. The company develops genetic tests that help clinicians identify over 200 rare heritable disorders.

In 2006, GeneDx was acquired by Bioreference Laboratories, a diagnostic company located in New Jersey. Although the two have "completely separate" day-to-day operations, the added support has allowed GeneDx to expand at a 50% growth rate, to 90 employees since the acquisition, says John Compton, the scientific director and co-president of the company. It has also helped launch the company into highresolution genetic testing and expand its focus from ultra-rare disorders to more common, but still rare, diseases like heritable cardiomyopathies, says Swaroop Aradhya, a geneticist and the director of clinical microarray services.

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