Abstract
Evaluation of: Brody JD, Ai WZ, Czerwinski DK et al.In situ vaccination with a TLR9 agonist induces systemic lymphoma regression: a Phase I/II study. J. Clin. Oncol. 28(28), 4324–4332 (2010).Despite high response rates of the follicular B-cell lymphoma to monoclonal antibodies, the clinical course of lymphoma is still characterized by a continuous pattern of relapse. Brody and colleagues treated 15 patients with relapsed, low-grade lymphoma using low-dose radiotherapy applied to one of the tumor sites with combined injection of a TLR-9 agonist at the same site. This strategy induced specific immunity and tumor regression in several patients with an objective response rate of 27%. The results indicate an involvement of the tumor TLR-9-expressing B cells acting as antigen-presenting cells. TLR-9 in situ vaccination combined with local radiotherapy clearly warrants further in-depth analysis and investigation in a Phase III randomized trial, and may provide a new opportunity for the treatment of B-cell malignancies.
Published Version
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