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PK Data from Drug-Drug Interaction Study Describes Lack of CYP3A4 Interactions

BERLIN, June 28, 2013 (GLOBE NEWSWIRE) -- TESARO, Inc. (Nasdaq:TSRO), an oncology-focused biopharmaceutical company, today announced that results from a pharmacokinetic study of rolapitant, an NK-1 receptor antagonist, were presented this morning at the Multinational Association of Supportive Care in Cancer/International Society of Oral Oncology (MASCC/ISOO) International Symposium in Berlin. These data support that rolapitant may be administered concomitantly with other pharmaceutical products that are metabolized by the liver microsomal enzyme CYP3A4, without a requirement for dose adjustment of the co-administered product. Pharmacokinetic data for other NK-1 receptor antagonists indicate that doses of concomitantly administered products metabolized by CYP3A4 must often be adjusted.