Clinicopathology, immunophenotype, T cell receptor gene rearrangement, Epstein-Barr virus status andp53 gene mutation of cutaneous extranodal NK/T-cell lymphoma, nasal-type

作     者：WANG Ting-ting XU Chen LIU Shan-ling KAN Bei RAN Yu-ping LIU Wei-ping LI Gan-di WANG Lin 

作者机构：Department of Dermatovenereology West China Hospital Sichuan University Chengdu Sichuan 610041 China Department of Pathology West China Hospital Sichuan University Chengdu Sichuan 610041 China 

出 版 物：《Chinese Medical Journal》 (中华医学杂志（英文版）)

年 卷 期：2013年第126卷第7期

页      面：1281-1287页

核心收录：

学科分类：0710[理学-生物学] 07[理学] 08[工学] 071009[理学-细胞生物学] 09[农学] 071007[理学-遗传学] 0901[农学-作物学] 0836[工学-生物工程] 090102[农学-作物遗传育种] 

主　　题：NK/T-cell cutaneous lymphoma p53 gene mutations Epstein-Barr virus 

摘      要：Background Extranodal natural killer/T-cell （NK/T cell） lymphoma, nasal-type, is a rare lymphoma. Skin is the second most common site of involvement after the nasal cavity/nasalpharynx. The aim of this study was to investigate the clinicopathologic features, immunophenotype, T cell receptor （TCR） gene rearrangement, the association with Epstein-Barr virus （EBV） infection and p53 gene mutations of the lymphoma. Methods The clinicopathologic analysis, immunohistochemistry, in situ hybridization for EBERI/2, TCR gene rearrangement by polymerase chain reaction （PCR）, mutations of p53 gene analyzed by PCR and sequence analysis were employed in this study. Results In the 19 cases, the tumor primarily involved the dermis and subcutaneous layer. Immunohistochemical staining showed that most of the cases expressed CD45RO, CD56, CD3E, TIA-1 and GrB. Three cases were positive for CD3 and two cases were positive for CD30. Monoclonal TCRy gene rearrangement was found in 7 of 18 cases. The positive rate of EBERI/2 was 100%. No p53 gene mutation was detected on the exon 4-9 in the 18 cases. Fifteen cases showed Pro （proline）/Arg （arginine） single nucleotide polymorphisms （SNPs） on the exon 4 at codon 72. The expression of p53 protein was 72% （13/18）immunohistochemically. Conclusions Cutaneous NK/T-cell lymphoma is a rare but highly aggressive lymphoma with poor prognosis. No p53 gene mutation was detected on the exon 4-9, and Pro/Arg SNPs on p53 codon 72 were detected in the cutaneous NK/T-cell lymphoma. The overexpression of p53 protein may not be the result of p53 gene mutation.