Hi Histonetters, we are wondering what everyone else out there is doing to be compliant with the following requirement? We do ER and PR by IHC but dont know what published benchmarks are out there to compare ourselves to. Also, how do you record interobserver variability amongst the pathologists? Any insights into this would be appreciated.
ANP.22970 Annual Result Comparison Phase II For immunohistochemical and FISH/ISH tests that provide independent predictive information, the laboratory at least annually compares its patient results with published benchmarks, and evaluates interobserver variability among the pathologists in the laboratory. NOTE: Individuals interpreting the assay must also have their concordance compared with each other and this concordance should also be at least 95%. With specific reference to estrogen and progesterone receptor studies: in general, the overall proportion of ER-negative breast cancers (invasive and DCIS) should not exceed 30%. The proportion is somewhat lower in postmenopausal than premenopausal women (approximately 20% vs. 35%). The proportion is considerably lower in well-differentiated carcinomas (<10%) and certain special types of invasive carcinomas (<10% in lobular, tubular, and mucinous types). The proportion of PgR-negative cases is 10-15% higher than for ER-negative in each of these settings. Investigation is warranted if the proportion of negative cases is significantly lower in any of these settings. Joanne Clark, HT Director of Histology Pathology Consultants of New Mexico Roswell, New Mexico Disclaimer: This electronic message may contain information that is proprietary, confidential, or legally privileged or protected. It is intended only for the use of the individual(s) and entity named in the message. If you are not an intended recipient of this message, please notify the sender immediately and delete the material from your computer. Do not deliver, distribute or copy this message and do not disclose its contents or take any action in reliance on the information it contains. _______________________________________________ Histonet mailing list [email protected] http://lists.utsouthwestern.edu/mailman/listinfo/histonet
