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Correlation of Anti-Centromere Antibodies (ACA) Detection by Indirect Immunofluorescence (IFA) on HEp-2 Cells and by ELISA Demonstrates High Concordance but Highlights Advantage of IFA in Detecting ACA to All Centromere Protein (CENP) Antigens

February 20, 2024

Anti-centromere antibodies, first identified as a discrete speckled pattern on indirect immunofluorescence assay (IFA), are a hallmark of systemic sclerosis (SSc). In this abstract, an ELISA using both CENP-B and CENP-A is compared to the reference method, HEp-2 cell IFA, highlighting its high, but still less than 100%, sensitivity due to multiple centromere subcomponents.