Abstract |
Despite active therapies for small cell lung cancer (SCLC), most patients relapse and die of the disease. The present study evaluates immunization using the anti-idiotypic antibody BEC2, which mimics the ganglioside GD3 expressed on the surface of most SCLC tumors, combined with Bacillus Calmette-Guérin (BCG) as an immune adjuvant. We hypothesized that active immunization could alter the natural history of the disease. Fifteen patients who had completed standard therapy for SCLC received a series of five intradermal immunizations consisting of 2.5 mg of BEC2 plus BCG over a 10-week period. Blood was collected for serological analysis, and outcome was monitored. All patients developed anti-BEC2 antibodies, despite having received chemotherapy with or without thoracic radiation. We detected anti-GD3 antibodies in five patients, including those with the longest relapse-free survival. The median relapse-free survival for patients with extensive stage disease is 11 months and has not been reached for patients with limited stage disease (>47 months), with only one of seven patients having relapsed after a median follow-up of 47 months. Immunization of patients with SCLC after standard therapy using BEC2 plus BCG can induce anti-GD3 antibodies and is safe. The survival and relapse-free survival in this group of patients are substantially better than those observed in a prior group of similar patients. A Phase III trial is being conducted to evaluate BEC2 plus BCG as adjuvant therapy after chemotherapy and irradiation.
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Authors | S C Grant, M G Kris, A N Houghton, P B Chapman |
Journal | Clinical cancer research : an official journal of the American Association for Cancer Research
(Clin Cancer Res)
Vol. 5
Issue 6
Pg. 1319-23
(Jun 1999)
ISSN: 1078-0432 [Print] United States |
PMID | 10389914
(Publication Type: Clinical Trial, Journal Article, Research Support, Non-U.S. Gov't, Research Support, U.S. Gov't, P.H.S.)
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Chemical References |
- Adjuvants, Immunologic
- Antibodies, Anti-Idiotypic
- BCG Vaccine
- Gangliosides
- Immunoglobulin G
- Immunoglobulin M
- ganglioside, GD3
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Topics |
- Adjuvants, Immunologic
(adverse effects, therapeutic use)
- Adult
- Aged
- Antibodies, Anti-Idiotypic
(adverse effects, therapeutic use)
- BCG Vaccine
(therapeutic use)
- Carcinoma, Small Cell
(immunology, mortality, therapy)
- Disease-Free Survival
- Female
- Gangliosides
(immunology)
- Humans
- Immunoglobulin G
(blood)
- Immunoglobulin M
(blood)
- Immunotherapy, Active
- Lung Neoplasms
(immunology, mortality, therapy)
- Male
- Middle Aged
- Survival Rate
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