Immunohistochemistry as a valuable tool to assess CD30 expression in peripheral T-cell lymphomas: high correlation with mRNA levels.

نویسندگان

  • Céline Bossard
  • Maria Pamela Dobay
  • Marie Parrens
  • Laurence Lamant
  • Edoardo Missiaglia
  • Corinne Haioun
  • Antoine Martin
  • Bettina Fabiani
  • Richard Delarue
  • Olivier Tournilhac
  • Mauro Delorenzi
  • Philippe Gaulard
  • Laurence de Leval
چکیده

The extended use of brentuximab-vedotin was reported for CD30(+) nonanaplastic peripheral T-cell lymphomas (PTCLs) with promising efficacy. CD30 status assessment is thus a critical factor for therapeutic decision, but the reliability of immunohistochemistry (IHC) in evaluating its expression remains to be defined. This prompted us to investigate the correlation between semiquantitative CD30 protein assessment by IHC and messenger RNA (mRNA) assessment by microarrays in a cohort of 376 noncutaneous PTCLs representative of the main entities. By IHC, CD30 expression was heterogeneous across and within entities and significantly associated with large tumor cell size. In addition to 100% anaplastic large-cell lymphomas, 57% of other PTCL entities were CD30-positive at a 5% threshold. CD30 protein expression was highly correlated to mRNA levels. mRNA levels were bimodal, separating high from low CD30-expressing PTCL cases. We conclude that IHC is a valuable tool in clinical practice to assess CD30 expression in PTCLs.

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عنوان ژورنال:
  • Blood

دوره 124 19  شماره 

صفحات  -

تاریخ انتشار 2014