J Korean Med Sci.  2005 Apr;20(2):340-343. 10.3346/jkms.2005.20.2.340.

Analysis of Loss of Heterozygosity in Korean Patients with Keratoacanthoma

Affiliations
  • 1Department of Plastic and Reconstructive Surgery, Keimyung University School of Medicine, Korea.
  • 2Department of Pathology, Keimyung University School of Medicine, Korea.
  • 3Department of Anatomy, Institute for Medical Genetics, Keimyung University School of Medicine, Daegu, Korea. dkkim@dsmc.or.kr

Abstract

Loss of heterozygosity (LOH) has been established as an important genetic mechanism giving rise to malignant neoplasia. The mechanism of LOH has been shown to cause basal cell carcinoma and malignant melanoma as well as other types of skin cancer. A few studies on LOH in sporadic keratoacanthomas have been reported. The purpose of this study was to investigate the significance of LOH in the pathogenesis of sporadic keratoacanthomas developed in 10 Korean patients. The presents of LOH at 7 microsatellite markers (D2S286, D3S1317, D5S346, D9S160, D9S171, D10S185, and D17S261) were evaluated in sporadic keratoacanthomas. LOH was found in only 1 of 10 cases at D10S185. The low frequency of LOH detected in this study suggests that LOH may not be significant in the induction of sporadic keratoacanthomas.

Keyword

Loss of Heterozygosity; Keratoacanthoma

MeSH Terms

Adult
Aged
Female
Humans
Keratoacanthoma/*genetics
*Loss of Heterozygosity
Male
Middle Aged
Research Support, Non-U.S. Gov't

Figure

  • Fig. 1 LOH at chromosome region 10q (D10S185) in patient No. 10. The arrow indicates the reduction of signal intensity in tumor (T) DNA as compared with corresponding normal (N) DNA.


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