ImmunoGen, Inc., a biotechnology company that develops antibody-based targeted anticancer products, today announced that Genentech, a member of the Roche Group, today announced its receipt of a Refuse to File (RTF) letter from the US Food and Drug Administration (FDA) for the accelerated approval of the Biologic License Application (BLA) for trastuzumab-DM1, or T-DM1, submitted in July 2010.
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