Abstract
Targeting of T cells or natural killer (NK) cells to tumours by using bispecific antibodies has attracted increasing interest in the past few years. We treated 31 patients with malignant glioma using adoptive transfer of lymphokine-activated killer (LAK) cells coupled to a bispecific antibody (anti-CD3+anti-glioma) as post-operative adjuvant therapy. Although this study excluded patients with deeply-seated tumours or a poor performance status, approximately 50% of the patients remained alive after 3 years, and 40% were free of recurrence. Serial CT scans revealed disappearance of remnant tumours in some patients. In addition, CT-guided stereotactic biopsy of the tumour in 3 patients showed extensive necrosis and degeneration after specific targeting therapy (STT). Five patients developed acute infection, and one of them died of bacterial meningitis. Our results suggest that antibody-targeted LAK therapy can achieve a higher response rate in patients with standard LAK therapy or any type of conventional treatment.
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