Development and validation of a cell cycle progression signature for decentralized testing of men with prostate cancer.

Aim: The 46-gene Prolaris® cell cycle progression test provides information on the risk of prostate cancer progression. Here we developed and validated a 16-gene kit-based version. Methods: RNA was extracted from prostate cancer biopsy tissue. Amplification efficiency, minimum tumor content, repeatability, reproducibility and equivalence with the 46-gene test were evaluated. Results: Amplification efficiencies for all genes were within the acceptable range (90-110%), and samples with ≥50% tumor content were appropriate for the 16-gene test. Results were repeatable (standard deviation: 0.085) and reproducible (standard deviation: 0.115). Instrument, operator and kit lot had minimal impact on results. Cell cycle progression scores from the 46- and 16-gene tests were highly correlated (r = 0.969; bias = 0.217). Conclusion: The 16-gene test performs consistently and similarly to the 46-gene test.

Prostate cancer does not always require aggressive treatment, and some men with low risk of disease progression may chose active surveillance. One way to measure the risk of disease progression is the Prolaris® cell cycle progression test, which is performed at a commercial testing facility and measures the expression of 46 genes. However, certain European countries would prefer to run this test at a centralized testing facility. To this end we developed a streamlined kit measuring 16 genes to be used in these testing facilities, and showed that the cell cycle progression scores derived from the kit test are robust and equivalent to those obtained with the larger 46-gene test.

Biomarkers in medicine. 2022 Mar 24 [Epub ahead of print]

Vanessa Kuhl, Wyatt Clegg, Stephanie Meek, Lauren Lenz, Darl D Flake, Tracy Ronan, Max Kornilov, Deborah Horsch, Marsel Scheer, Daniel Farber, Hillary Zalaznick, Olivier Cussenot, Eva Compérat, Geraldine Cancel-Tassin, Peter J Wild, Felix Kh Chun, Philipp Mandel, Farid Moinfar, Todd Cohen, Sylvette Delee, Ralf Kronenwett, Jennifer Doedt

Myriad International GmbH, Cologne, 50829, Germany., Myriad Genetics, Inc., Salt Lake City, UT 84108, USA., CeRePP, Sorbonne University, Paris, 75020, France., Department of Pathology, Sorbonne University, Tenon Hospital, Paris, 75020, France., Dr. Senckenberg Institute of Pathology, University Hospital Frankfurt, Frankfurt am Main, 60596, Germany., Department of Urology, University Hospital Frankfurt, Frankfurt am Main, 60596, Germany., Department of Pathology, Ordensklinikum Linz/Hospital of the Sisters of Charity, Linz, 4010, Austria.

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