PMID- 27417320 OWN - NLM STAT- MEDLINE DCOM- 20170322 LR - 20181113 IS - 1532-2807 (Electronic) IS - 1219-4956 (Linking) VI - 23 IP - 1 DP - 2017 Jan TI - Agreement of Different Methods for Tissue Based Detection of HER2 Signal in Invasive Breast Cancer. PG - 79-84 LID - 10.1007/s12253-016-0091-4 [doi] AB - Breast cancer is the second leading cause of cancer mortality amongst American women. The HER2 gene encodes a cell surface receptor that affects cell proliferation and has been recognized as a diagnostic factor in treatment selection for invasive breast cancer. Examine accuracy in HER2 detection between manual count, computer assisted, and automated tiling algorithm. 42 randomly selected invasive breast cancer specimens were enumerated by fluorescence in situ hybridization (FISH)for HER2 and CEP17 markers using the Vysis HER2 assay (AbbotLaboratory, North Chicago, IL). Specimens were tested using three methods: Manual, computer assisted nuclei selection (Tissue FISH MetaSystems, Newton, MA), and automated enumeration (MetaSystems, Newton, MA). The greatest bias and widest agreement limits for HER2 and CEP17 were seen in Automatic versus Manual, the gold standard. HER2 values greater than 6 possessed the greatest bias and widest agreement limits. CEP17 comparison showed similar bias and agreement limits for each comparison. Kappa values indicated good agreement for all methods although Tissue FISH and Manual possessed better agreement. Higher agreement at lower HER2 & CEP17 count maybe due to fewer chromosomal aberrations, in which selection of field of views has less variation between methods. Alternatively, increased background signals seen in polyploidy may be responsible for the variations in signal count. Manual and Tissue FISH demonstrated good agreement amongst by both Altman Bland and Cohen's Kappa. While the automatic method has good agreement at lower HER2, the sharp increase in variability at higher HER2 counts illustrates a limitation of the automatic method. FAU - Thakral, Gaurav AU - Thakral G AD - University of Hawaii West, Honolulu, HI, USA. gthakral@hawaii.edu. FAU - Wey, Andrew AU - Wey A AD - University of Hawaii West, Honolulu, HI, USA. FAU - Rahman, Mobeen AU - Rahman M AD - University of Hawaii West, Honolulu, HI, USA. FAU - Fang, Rui AU - Fang R AD - University of Hawaii West, Honolulu, HI, USA. FAU - Lum, Christopher AU - Lum C AD - University of Hawaii West, Honolulu, HI, USA. LA - eng PT - Journal Article DEP - 20160714 PL - Switzerland TA - Pathol Oncol Res JT - Pathology oncology research : POR JID - 9706087 RN - EC 2.7.10.1 (ERBB2 protein, human) RN - EC 2.7.10.1 (Receptor, ErbB-2) SB - IM MH - Algorithms MH - Breast Neoplasms/*diagnosis/*genetics/pathology MH - Cell Proliferation/genetics MH - Chromosome Aberrations MH - Female MH - Humans MH - Middle Aged MH - Neoplasm Invasiveness/*diagnosis/*genetics/pathology MH - Receptor, ErbB-2/*genetics MH - Signal Transduction/*genetics OTO - NOTNLM OT - Altman bland OT - Breast neoplasms/diagnosis OT - Breast neoplasms/treatment OT - Fish OT - HER2 Recptor EDAT- 2016/07/16 06:00 MHDA- 2017/03/23 06:00 CRDT- 2016/07/16 06:00 PHST- 2015/06/28 00:00 [received] PHST- 2016/07/06 00:00 [accepted] PHST- 2016/07/16 06:00 [pubmed] PHST- 2017/03/23 06:00 [medline] PHST- 2016/07/16 06:00 [entrez] AID - 10.1007/s12253-016-0091-4 [pii] AID - 10.1007/s12253-016-0091-4 [doi] PST - ppublish SO - Pathol Oncol Res. 2017 Jan;23(1):79-84. doi: 10.1007/s12253-016-0091-4. Epub 2016 Jul 14.