J Korean Med Sci.  1996 Jun;11(3):233-238. 10.3346/jkms.1996.11.3.233.

Deletions of 9p21 and TP53 in bladder cancer

• Park WS
• Oh MJ
• Lee HK
• Lee KO
• Rhyu MG
• Dong SM
• Lee JY
• Kim SH

• KMID: 644955
• DOI: http://doi.org/10.3346/jkms.1996.11.3.233

Abstract

The objective of this study was to characterize the alterations of 9p21 and TP53 in Korean transitional bladder cancer and to assess the relationship between the histopathologic parameter and the alteration of these genes. Allele loss in 29 surgically resected transitional cell carcinoma was examined by using the multiplex PCR with 7 and 1 microsatellite markers for 9p21 and TP53, respectively. Twenty-one (72%) demonstrated allele loss at 9p21 and/or TP53. Deletion at the 9p21 region was detected in 17(61%) of 28 informative cases at one or more loci, and LOH at TP53 was found in 12(55%) of 22 informative cases. Of 7 microsatellite markers for 9p21, allele loss occurred the most frequently at locus D9S162(69%) and D9S104(69%). Additionally, hemizygous deletion was slightly more common than homozygous deletion. Deletion at 9p21 and TP53 was not related with increased grade. These results suggest that the alteration of 9p21 may be an early event in the development of Korean bladder cancer, while p53 gene may be involved in early event of some bladder cancers as well as in their late events.

Keyword

Deletion; 9p21; TP53; bladder cancer

MeSH Terms

Adult
Aged
Bladder Neoplasms/*genetics
Carcinoma, Transitional Cell/*genetics
*Chromosome Deletion
*Chromosomes, Human, Pair 9
Female
*Genes, p53
Human
Male
Middle Age