Pathology and Pathophysiology is an online open access journal dedicated to bridge the gap between research and clinical practice, providing valuable insights and advancements that improve understanding, diagnosis, and treatment of diseases. Read More
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Article (s)
Volume 1, Issue 1 Pathol Pathophysiol, 1:1
Anti-JOVI.1 Antibody to Detect Clonal T Cell Populations: Implementation into a Diagnostic Flow Cytometry Laboratory and Correlation with Clinical Findings
Benjamin Reardon*, Jennifer Hsu, Sandy Smith, Riana van der Linde, David A. Brown, Elizabeth Tegg, and Sarah C. Sasson
Abstract
The development of a high through-put flow cytometric assay for the identification of clonal T cells has proved challenging. We assessed the surface expression of a specific T Cell Receptor β-chain constant region using conjugated anti-JOV1.1 monoclonal antibodies to identify clonal T cell populations in a large diagnostic flow cytometry laboratory within a quaternary referral hospital. 37 cases were analysed. We identified 15 cases of clonal JOVI.1 expression, 7 of which had a consensus diagnosis of T-cell lymphoproliferative disease (TLPD). The remaining 22 cases had polyclonal JOVI.1 expression, none of which had a consensus diagnosis of TLPD, resulting in a sensitivity of 100% and specificity of 73%. When clonal NK-T cells were excluded, specificity further improves to 97%. These results provide real-world data and support the widespread adoption of this assay into diagnostic use.