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Absence of structural alterations of the multidrug resistance genes in transitional cell carcinoma

Summary

Tumor DNA from 27 patients with treated or untreated transitional cell carcinomas of the urinary tract was screened for genomic alterations of the multidrug resistance genes in order to determine whether structural changes of these genes are important in primary urothelial tumors. None of the tumors showed evidence of amplification or rearrangements of either mdr1 or mdr2. The lack of amplification or rearrangements observed in these tumors suggests that structural alterations of the mdr1 and mdr2 genes are not important mediators of drug resistance in TCC.

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Author information

Correspondence to E. A. Klein or R. S. K. Chaganti.

Additional information

Supported in part by grant CA-34775 from the National Institutes of Health and by a grant from the Heckscher Foundation for Children

Dr. Klein is a fellow of the American Cancer Society

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Klein, E.A., Allen, G., Fair, W.R. et al. Absence of structural alterations of the multidrug resistance genes in transitional cell carcinoma. Urol. Res. 18, 281–286 (1990). https://doi.org/10.1007/BF00294774

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Key words

  • Multidrug resistance genes
  • Transitional cell carcinoma
  • Gene amplification