UK-based drug major GlaxoSmithKline says that data from a Phase I/II trial of its anti-CD20 monoclonal antibody, ofatumumab, has demonstrated the agent's anti-tumor activity in patients suffering from B-cell chronic lymphocytic leukemia. The findings, which are published in the February issue of the journal Blood, show that around half of the subjects in one of the three treatment groups achieved some degree of disease remission.
Ofatumumab, which is being developed by GSK in collaboration with Danish drugmaker Genmab (Marketletter January 1 and 8, 2007), targets a small region of the CD20 protein found on the surface the B-lymphocyte. Since the molecule is expressed on the surface of cancerous B-cells, the drug is thought to have potential application in a wide range of diseases.
62% of patients show objective response
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