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RE-186 labeled 16.88 IgM and 88BV59 IgG human antibody studies to assess potential for radioimmunotherapy

Journal Article · · Journal of Nuclear Medicine
OSTI ID:197976
; ;  [1]
  1. Virginia Mason Medical Center, Seattle, WA (United States)
Two studies with Re-186-MAG{sub 2}GABA labeled human antibodies were carried out to assess feasibility for radioimmunotherapy. Antibodies 16.88 and 88BV59 react with different epitopes of CTA 16.88, a tumor associated antigen of colorectal carcinoma. In a phase I dose escalation study, 14 patients received 60 mg/m{sup 2} 16.88 IgM MoAb. The dose of Re-186 ranged from 25 mCi/m{sup 2} to 210 mCi/m{sup 2} divided into 3 weekly infusions. In a pilot study with 88BV59, a human IgG3k MoAb, 20 mg antibody was labeled with 25 mCi/m{sup 2} Re-186 and administered to 4 patients with colon carcinoma. Tumor targeting was seen in 12 of 14 patients with 16.88 and all 4 patients with 88BV59. Retention of antibody at the tumor was longer with 88BV59. One patient developed a rash. No other acute or delayed toxicities were observed. Human anti-human antibody did not develop in any patient. The slower metabolism of the 88BV59 IgG suggests that this form of immunoconjugate merits further investigation for use in radioimmunotherapy.
OSTI ID:
197976
Report Number(s):
CONF-940605--
Journal Information:
Journal of Nuclear Medicine, Journal Name: Journal of Nuclear Medicine Journal Issue: Suppl.5 Vol. 35; ISSN 0161-5505; ISSN JNMEAQ
Country of Publication:
United States
Language:
English

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