Prognostic significance of CD20 expression in classical Hodgkin lymphoma: a clinicopathological study of 119 cases

Clin Cancer Res. 2003 Apr;9(4):1381-6.

Abstract

Purpose: Recent evidence has demonstrated that classical Hodgkin lymphoma (cHL) originates from mature germinal center B cells. However, only approximately 25% of cHLs express the classical B-cell marker CD20. There is very little, and controversial, information on the prognostic significance of CD20 expression in cHL with regard to failure-free (FFS) and overall survival (OS).

Experimental design: CD20 expression was investigated in a series of 119 cases of cHL treated at a single institution where complete clinical follow-up was available. The results were correlated to FFS and OS by the Kaplan-Maier method and uni- and multivariate analyses.

Results: Hodgkin and Reed-Sternberg cells expressed CD20 in 20% (24 of 119) of the cases based on a cutoff of 10% positivity. Within a mean follow-up period of 12 years, univariate analysis revealed a significantly higher frequency of disease relapses in the CD20-negative group (30 of 95; 32%) compared with CD20-positive tumors (2 of 24; 8%; P = 0.022). Compared by the log-rank test, the mean FFS in CD20-negative cases (202 months) was considerably shorter than in the CD20-positive cases (286 months; P = 0.0195). In a multivariate analysis, CD20 expression was an independent positive prognostic factor for FFS in cHL patients treated from 1974 to 1980 (P = 0.035). This effect disappeared in the period from 1981 to 1999 (P = 0.266).

Conclusion: CD20-positive cHL shows a trend for better FFS and OS. However, improved treatment modalities seem to abolish these differences.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adolescent
  • Adult
  • Aged
  • Antigens, CD20 / biosynthesis*
  • Female
  • Hodgkin Disease / diagnosis*
  • Hodgkin Disease / metabolism*
  • Hodgkin Disease / mortality
  • Humans
  • Immunohistochemistry
  • Male
  • Middle Aged
  • Multivariate Analysis
  • Prognosis
  • Time Factors

Substances

  • Antigens, CD20