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Older age is an adverse prognostic factor in stage I, favorable histology Wilms’ tumor treated with vincristine monochemotherapy: A study by the United Kingdom Children’s Cancer Study Group, Wilm’s tumor working group

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Date
2003-09-01
ICR Author
Pritchard-Jones, Kathy
Author
Pritchard-Jones, K
Kelsey, A
Vujanic, G
Imeson, J
Hutton, C
Mitchell, C
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Type
Journal Article
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Abstract
Purpose : To identify clinical prognostic factors in children with stage 1, favorable histology (FH) Wilms’ tumor treated with vincristine monochemotherapy after immediate nephrectomy to define subgroups for consideration of further reduction in treatment intensity. Patients and Methods: During two consecutive trials of the United Kingdom Children’s Cancer Study Group (UKW2 and UKW3, 1986 to 2001), 242 children with stage I FH Wilms’ tumor were treated with immediate nephrectomy followed by 10 weekly injections of vincristine 1.5 mg/m(2). Event-free survival (EFS) and overall survival (OS) were compared by age group. Results: The 4-year EFS rate was 93.2%, 87.2%, and 71.3% for children less than 2 years old, 2 to 4 years old, and 4 years old or older at diagnosis, respectively (log-rank, P = .001); the corresponding 4-year OS rate was 98.1%, 95.0%, and 87.2% (log-rank, P = .01). There were no toxicity- or procedure-related deaths. In multivariate analysis, specimen weight was not of independent prognostic value (P = .66). Among the 186 children younger than 4 years at diagnosis, there were 17 relapses and five deaths, compared with 16 relapses and eight deaths among the 56 children at least 4 years old at diagnosis. OS after relapse was surprisingly poor (61.6% at 4 years). Conclusion: Treatment for stage I FH Wilms’ tumor is generally successful using vincristine monotherapy after immediate nephrectomy, and therefore, the risks of dactinomycin hepatopathy can be avoided. However, age at least 4 years is a significant adverse prognostic factor. This treatment schedule should be considered in any trial of treatment reduction in very young children with stage I FH Wilms’ tumor, regardless of tumor size, and we suggest that the upper age limit for the reduced therapy be set at 4 years. (C) 2003 by American Society of Clinical Oncology.
URI
https://repository.icr.ac.uk/handle/internal/2672
DOI
https://doi.org/10.1200/JCO.2003.01.062
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Language
eng
License start date
2003-09-01
Citation
JOURNAL OF CLINICAL ONCOLOGY, 2003, 21 pp. 3269 - 3275
Publisher
AMER SOC CLINICAL ONCOLOGY

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