PMID- 15279836 OWN - NLM STAT- MEDLINE DCOM- 20040916 LR - 20071114 IS - 0027-5107 (Print) IS - 0027-5107 (Linking) VI - 562 IP - 1-2 DP - 2004 Aug 8 TI - Inter-rater agreement on chromosome 5 breakage in FISH-based mutagen sensitivity assays (MSAs). PG - 133-42 AB - In chromosome breakage assays, validated, universal criteria for selection of cells and classification of chromosome aberrations may enhance their utility for cancer susceptibility screening. To standardize a fluorescence in situ hybridization (FISH) modification of the mutagen sensitivity assay (MSA), scoring criteria were evaluated by web-based validation. Two hundred digital FISH images were assigned random identification numbers. With this set of images, criteria for inclusion of cells and measurement of the frequency of abnormal cells were evaluated by eight observers, all of whom had five or more years of experience. Observers included doctoral and MS/BS level cytogeneticists, and were drawn from a randomized pool of 54 volunteers. Questions addressed were: (1) how uniformly were criteria applied to analysis of a standard digital FISH image set and (2) did concordance vary with educational level? These data suggest inter-rater agreement within a factor of 2 for average breakage frequency, but revealed greater variability in cell selection. These results aid in estimating the components of assay variance due to definitions, technical parameters and biological variables. FAU - Barker, Peter E AU - Barker PE AD - DNA Technologies Group, Biotechnology Division, Chemical Sciences and Technology Laboratory, NIST-NCI Biomarkers Validation Project, National Institute of Standards and Technology (NIST), Gaithersburg, MD 20899-8311, USA. peter.barker@nist.gov FAU - Wang, Wendy AU - Wang W FAU - Wagner, Paul D AU - Wagner PD FAU - Pinsky, Paul AU - Pinsky P LA - eng GR - Y1-CN-0103-01/CN/NCI NIH HHS/United States PT - Journal Article PT - Research Support, U.S. Gov't, Non-P.H.S. PT - Research Support, U.S. Gov't, P.H.S. PL - Netherlands TA - Mutat Res JT - Mutation research JID - 0400763 RN - 0 (Mutagens) SB - IM MH - *Chromosome Aberrations MH - *Chromosomes, Human, Pair 5 MH - Humans MH - In Situ Hybridization, Fluorescence MH - Mutagens/*toxicity MH - *Observer Variation EDAT- 2004/07/29 05:00 MHDA- 2004/09/17 05:00 CRDT- 2004/07/29 05:00 PHST- 2004/02/20 00:00 [received] PHST- 2004/05/13 00:00 [revised] PHST- 2004/06/03 00:00 [accepted] PHST- 2004/07/29 05:00 [pubmed] PHST- 2004/09/17 05:00 [medline] PHST- 2004/07/29 05:00 [entrez] AID - S1383571804001354 [pii] AID - 10.1016/j.mrgentox.2004.06.001 [doi] PST - ppublish SO - Mutat Res. 2004 Aug 8;562(1-2):133-42. doi: 10.1016/j.mrgentox.2004.06.001.