Detection of a peripheral blood T cell clone is an independent prognostic marker in mycosis fungoides

被引:120
作者
Fraser-Andrews, EA
Woolford, AJ
Russell-Jones, R
Seed, PT
Whittaker, SJ
机构
[1] St Johns Inst Dermatol, Skin Tumour Unit, London, England
[2] United Med & Dent Sch Guys & St Thomas Hosp, Dept Publ Hlth Med, London SE1 7EH, England
关键词
polymerase chain reaction; single-strand conformational polymorphism; T cell receptor gene rearrangement;
D O I
10.1046/j.1523-1747.2000.00830.x
中图分类号
R75 [皮肤病学与性病学];
学科分类号
100206 ;
摘要
T cell receptor gene analysis is a sensitive method for assessment of peripheral blood involvement in mycosis fungoides. This study uses polymerase chain reaction/single-strand conformational polymorphism (PCR/SSCP) analysis of the T cell receptor gamma gene and relates the results to skin stage and outcome in mycosis fungoides. Seventy-five peripheral blood samples from 66 patients were obtained from 1990 onwards and subjected to PCR/SSCP. Both Southern blot analysis and PCR/SSCP analysis were performed on 63 samples from 56 patients. Fourteen patients had T1 disease (12 IA, two IIA), 20 T2 (14 IB, five IIA, one IVA), 29 T3 (24 IIB, two IVA, three IVB, two patients tested at both T2 and T3), and five T4 (all III). The percentage of positive samples was higher with PCR/SSCP than with Southern blot analysis (29 of 63 vs eight of 63 samples, p < 0.001), and the percentage of positive samples increased with each stage (21% at T1, 35% at T2, 58% at T3, and 71% at T4). Proportional hazards analysis corrected for age, skin, and lymph node stage showed that the presence of a peripheral blood clone is associated with a worse outcome (p = 0.03, CI 1.1-6.03). These results indicate that the presence of a peripheral blood clone is an independent prognostic variable in patients with mycosis fungoides after correcting for age, skin, and lymph node stage, and that peripheral blood involvement is present in a large proportion of patients with early stage mycosis fungoides.
引用
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页码:117 / 121
页数:5
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