Abstract
R24 is an IgG3 mouse monoclonal antibody that identifies GD3, a prominent ganglioside on the surface of melanoma cells and other cells of neuroectodermal origin. Twelve patients with metastatic melanoma were treated with R24 at three dose levels, 8, 80, or 240 mg/m2, over a period of 2 weeks. Peak antibody levels in the serum were dose related and ranged from less than 0.1 to 62 micrograms/ml. Inflammatory reactions (urticaria, pruritus, erythema, subcutaneous ecchymoses) were observed around tumor sites in patients treated at doses greater than or equal to 80 mg/m2. Tumor biopsies during and after treatment showed lymphocyte and mast cell infiltration, mast cell degranulation, and complement deposition. Side effects were mild and were readily controlled by antihistamines. Major tumor regression has been observed in three patients.
MeSH Terms
Adult
Aged
Antibodies, Monoclonal/therapeutic use
Antigens, Neoplasm/immunology
Antigens, Surface/immunology
Clinical Trials as Topic
Complement Activation
Female
Gangliosides/immunology
Humans
Immunoglobulin G/administration & dosage
Immunotherapy
Male
Melanoma/immunology,therapy
Middle Aged
Chemicals
Antibodies, Monoclonal
Antigens, Neoplasm
Antigens, Surface
Gangliosides
Immunoglobulin G
ganglioside, GD3
Authors & Affiliations
10 authors, click to expand affiliations / ORCID
Houghton A N
Mintzer D
Cordon-Cardo C
Welt S
Fliegel B
Vadhan S
Carswell E
Melamed M R
Oettgen H F
Old L J
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