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논문 기본 정보

자료유형
학술저널
저자정보
박해석 (연세대학교 의과대학 피부과학교실) 김종훈 (연세대학교 의과대학 피부과학교실 밒 피부생물학 연구소) 조미연 (연세대학교 의과대학 피부과학교실) 정기양 (연세대학교) 노미령 (연세대학교)
저널정보
대한피부과학회 Annals of Dermatology Annals of Dermatology 제33권 제1호
발행연도
2021.1
수록면
18 - 25 (8page)

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Background: Acral melanoma occurs on glabrous skin or the nail apparatus and is distinct from ultraviolet-related melanoma due to differing genetic alteration patterns. Although the pathogenesis of acral melanoma is not well understood, mechanical stress is thought to induce acral melanoma. The incidence of gene mutation and promoter methylation has been reported in tumors from acral melanoma; however, an association between genetic/epigenetic alterations and mechanical stress in acral melanoma remains unclear. Objective: To investigate the relationship between clinical/genetic factors and mechanical stress in acral melanoma. Methods: A retrospective review of 52 patients diagnosed with acral melanoma was performed. We reviewed the clinical characteristics of patients, tumor status, and tumor location. Mutations in BRAF, NRAS, and the TERT promoter, along with KIT amplification and PTEN promoter methylation were analyzed in the tumors. Results: The heel (34/52, 65.4%) was the most common anatomical tumor site. Mutations in BRAF (6/48, 12.5%), NRAS (6/49, 12.2%), and the TERT promoter (4/33, 12.1%), along with KIT amplification (3/37, 8.1%) and PTEN promoter hypermethylation (12/48, 25.0%) were observed in the tumors. On the forefoot, heel, and hallux, PTEN promoter hypermethylation was significantly associated with Breslow thickness (p=0.001) and ulceration rate (p= 0.042). On the midfoot and lesser toes, there was no significant difference in Breslow thickness or ulceration rate regardless of PTEN promoter hypermethylation (p>0.05). Conclusion: PTEN promoter hypermethylation is associated with Breslow thickness and tumor ulceration on the forefoot, heel, and hallux in acral melanoma in Korean patients.

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