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Abstract
Alemtuzumab was the first monoclonal antibody to be humanized, a process which embeds rodent sequence fragments in a human IgG framework. The antibody target is CD52, an antigen expressed on normal lymphocytes as well as many T- and B-cell neoplasms. It therefore has a potential broad application across a spectrum of B- and T-cell malignancies as well as use as an immunosuppressant drug in, for example, bone marrow transplantation. The original licensing in the USA and Europe was for the treatment of fludarabine-refractory chronic lymphocytic leukemia (CLL). However, recent trials using alemtuzumab as a first-line agent for CLL have shown superior response rates compared with traditional alkylator therapy and this has led to US FDA approval for first-line treatment for CLL. It seems to be particularly useful in patients with CLL who have deletion of the TP53 tumor suppressor gene, a subset of disease that responds poorly to other currently available chemotherapeutics.
Financial & competing interests disclosure
Claire Dearden acts as a consultant and receives lecture fees from Schering AG. The authors have no other relevant affiliations or financial involvement with any organization or entity with a financial interest in or financial conflict with the subject matter or materials discussed in the manuscript apart from those disclosed.
No writing assistance was utilized in the production of this manuscript.
