Genentech, part of the Swiss company Roche, plans to seek approval later this year to sell the drug in Europe and the United States. Another company, ImmunoGen Inc., made the technology combining the drugs.
Genentech says the price of T-DM1 has not been determined. Herceptin costs more than $4,000 a month plus whatever doctors charge to infuse it. Herceptin's U.S. patent doesn't expire until 2019.
Cancer conference: http://www.cancer.net
American Cancer Society: http://www.cancer.org
Marilynn Marchione can be followed at http://twitter.com/MMarchioneAP
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