Inter- and intra-observer reliability of Epstein-Barr virus detection in Hodgkin lymphoma using histochemical procedures.

Abstract:

:EBER in situ hybridization (EBER) and LMP-1 immunohistochemistry (LMP-1) are widely used for identifying Epstein-Barr virus (EBV) within tumor cells of Hodgkin lymphoma (HL), but measurement error has never been formally evaluated. To determine assay reliability, 40 HL tumors with known EBV status were stained for both EBER and LMP-1 by two laboratories and reviewed twice by four hematopathologists. Inter- and intra-observer agreement were good to excellent, with kappas above 0.78 overall and above 0.60 for most subgroup analyses. However, reliability varied by histologic subtype, preparing laboratory, reviewer and EBV status determined on consensus review. For EBER, inter-observer agreement was high for nodular sclerosis HL but somewhat lower for EBV-negative mixed cellularity HL. For LMP-1, agreement was excellent for mixed cellularity HL but somewhat less reliable for EBV-positive nodular sclerosis HL. Agreement was good for EBER and LMP-1 applied to the same specimens but differed by consensus EBV status. The variability in assay interpretation justifies caution in comparing EBV association results across HL studies and underscores the need for interpretation guidelines.

journal_name

Leuk Lymphoma

journal_title

Leukemia & lymphoma

authors

Glaser SL,Gulley ML,Borowitz MJ,Craig FE,Mann RB,Stewart SL,Shema SJ,Ambinder RF

doi

10.1080/1042819032000141310

keywords:

subject

Has Abstract

pub_date

2004-03-01 00:00:00

pages

489-97

issue

3

eissn

1042-8194

issn

1029-2403

journal_volume

45

pub_type

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