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Gynecol Oncol. 1997 Apr;65(1):94-101.

Intraperitoneal radioimmunotherapy of ovarian cancer with 177Lu-CC49: a phase I/II study.

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  • 1Department of Obstetrics and Gynecology, University of Alabama at Birmingham, USA.

Abstract

BACKGROUND:

Twenty-seven ovarian cancer patients who failed chemotherapy entered a phase I/II trial of intraperitoneal 177Lu-CC49 antibody.

METHODS:

Patients had disease confined to the abdominal cavity +/- retroperitoneal lymph nodes, adequate organ function, and no previous radiation.

RESULTS:

The most common side effects were delayed, transient arthralgia (10/27) and marrow suppression with 1.665 GBq/m2 (45 mCi/m2), which was considered the maximum tolerated dose. One of thirteen patients with gross disease had >50% tumor reduction after therapy, whereas most others with gross disease progressed (one went off study with stable disease at 11 weeks). Seven of nine patients with <1-cm nodules progressed in < or =21 months, and two of nine remain without evidence of disease at 4 to 5 months. Of patients with microscopic or occult disease, one relapsed at 10 months and four of five remain without evidence of disease at >6 to 35 months.

CONCLUSIONS:

Marrow suppression was the dose-limiting toxic effect of intraperitoneal immunotherapy with 177Lu-CC49. Antitumor effects were noted against chemotherapy-resistant ovarian cancer, even at lower dose levels, and resulted in prolonged disease-free survival of most patients with microscopic disease. This form of treatment deserves further study.

[PubMed - indexed for MEDLINE]
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