Intraperitoneal yttrium-90-labeled monoclonal antibody in ovarian cancer.

Abstract

From March 1987 to March 1988, a phase I to II study was carried out in 25 patients with ovarian cancer. They received escalating doses of intraperitoneally (IP) administered yttrium-90 (Y-90)-labeled monoclonal antibody, HMFG1, against a tumor cell-surface antigen. Myelosuppression prevented an escalation of the administered Y-90 activity above 25 mCi. Y-90-labeled antibody was absorbed from the peritoneal cavity into the circulation. Maximum blood Y-90 activity was observed 40 hours after the IP injection with a mean of 21% of the injected activity (range, 14.2% to 26.4%) in the circulation. The radiation dose the bone marrow received from circulating Y-90-labeled antibody (the blood radiation dose) was calculated by applying the Medical Internal Radiation Dose (MIRD) formulation to the measured Y-90 activity in patients blood. Myelosuppression occurred following calculated blood radiation doses to bone marrow of only 10 to 30 cGy. The excessive myelosuppression following such modest radiation doses from circulating Y-90-labeled antibody could be explained by the uptake of Y-90 by bone. In an attempt to reduce bone absorption of Y-90, seven patients received an intravenous (IV) infusion of EDTA (Sinclair Pharmaceuticals Ltd, Godalming, United Kingdom). This increased the urinary excretion of Y-90 from a mean of 11.1% to 32.3% of the injected activity (P = .0001). Fourteen patients had assessable tumor at laparoscopy. Tumor regression was observed in one patient, and palliation of ascites in a further patient.

• Authors: J S Stewart, V Hird, D Snook, B Dhokia, G Sivolapenko, G Hooker, J T Papadimitriou, G Rowlinson, M Sullivan, H E Lambert
• Journal: Journal of clinical oncology : official journal of the American Society of Clinical Oncology (J Clin Oncol) Vol. 8 Issue 12 Pg. 1941-50 (Dec 1990) ISSN: 0732-183X [Print] United States
• PMID: 2230887 (Publication Type: Clinical Trial, Journal Article)

Chemical References

• Antibodies, Monoclonal
• Immunotoxins
• Yttrium Radioisotopes

Topics

• Adult
• Aged
• Antibodies, Monoclonal (administration & dosage, pharmacokinetics, therapeutic use)
• Bone Marrow (radiation effects)
• Female
• Humans
• Immunotoxins (administration & dosage, pharmacokinetics, therapeutic use)
• Injections, Intraperitoneal
• Middle Aged
• Ovarian Neoplasms (drug therapy, metabolism)
• Radiotherapy Dosage
• Remission Induction
• Yttrium Radioisotopes (administration & dosage, pharmacokinetics, therapeutic use)