Performance comparison of anti-p504s (SP116) Rabbit Monoclonal Primary Antibody vs. Monoclonal Rabbit Anti-Human AMACR clone 13H4 when duplexed with VENTANA Basal Cell Cocktail (34βE12+p63) as a diagnostic aid for prostatic adenocarcinoma using immunohistochemistry.

Abstract

Alpha-methylacyl-coenzyme A-racemase (AMACR), also known as p504s, is overexpressed in prostatic adenocarcinoma and is frequently used in combination with basal cell markers to aid in diagnosing difficult prostate adenocarcinoma cases. In this retrospective method comparison study, we examined the sensitivity and specificity of the ready-to-use anti-p504s (SP116) Rabbit Monoclonal Primary Antibody compared to the monoclonal rabbit anti-human AMACR clone 13H4 in prostatic adenocarcinoma samples. De-identified prostatic adenocarcinoma tissue samples were stained with either the SP116 or 13H4 antibody clone in combination with the VENTANA Basal Cell Cocktail (34βE12+p63) and scored as positive or negative for prostatic adenocarcinoma. The scoring pathologist was blinded to the known historical diagnosis of each sample. The scoring pathologist correctly diagnosed each sample regardless of which p504s clone was used. Both assays using either clone were 100% concordant in their sensitivity and specificity. This study demonstrates that the ready-to-use anti-p504s (SP116) Rabbit Monoclonal Primary Antibody is equivalent to clone 13H4 concentrate when used according to package insert instructions in combination with the VENTANA Basal Cell Cocktail (34βE12+p63) to aid pathologists in the diagnosis of prostatic adenocarcinoma.

• Authors: Veronique Lindner, Anne Waydelich, Chen Chun Chen, Carol Jones, Steven P Stratton
• Journal: Virchows Archiv : an international journal of pathology (Virchows Arch) Vol. 479 Issue 2 Pg. 337-343 (Aug 2021) ISSN: 1432-2307 [Electronic] Germany
• PMID: 33811532 (Publication Type: Comparative Study, Journal Article)
• Copyright: © 2021. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.

Chemical References

• Antibodies, Monoclonal
• Biomarkers, Tumor
• CK-34 beta E12
• Keratins
• Racemases and Epimerases
• alpha-methylacyl-CoA racemase

Topics

• Adenocarcinoma (immunology, pathology)
• Animals
• Antibodies, Monoclonal (immunology)
• Antibody Specificity
• Biomarkers, Tumor (analysis)
• Humans
• Immunohistochemistry
• Keratins (analysis)
• Male
• Predictive Value of Tests
• Prostatic Neoplasms (immunology, pathology)
• Rabbits
• Racemases and Epimerases (analysis)
• Reproducibility of Results
• Retrospective Studies