Therapeutic options: There is a need in the management of non-Hodgkin's lym
phoma (NHL) for tumor-targeted therapy. immunotherapy with monoclonal antib
odies can be used to reach this goal. These treatments have however often p
roduced disappointing efficacy and so have not been broadly applicable to p
atients.
Modified monoclonal antibodies: Technological advances have been used to al
ter mouse monoclonal antibodies genetically, leading to the development of
mouse/human chimeric or humanized antibodies with demonstrated advantages o
f reduced immunogenicity and enhanced ability to interact with human effect
or cells. Initial phase I/II trials of monoclonal antibodies for relapse or
refractory NHL, especially with chimeric anti-CD20 rituximab, demonstrated
encouraging results.
Further assessment: Randomized trials are now necessary to compare these ag
ents with standard regimens and to determine their optimal use.