CAP TODAY Pathology/Laboratory Medicine/Laboratory Management
October 2023—Wren Laboratories launched its PRRT (peptide receptor radionuclide therapy) Predictor Quotient, or PPQ, a companion diagnostic to its NETest, a liquid-biopsy neuroendocrine tumor diagnostic. The test classifies patients as either a responder, a patient who will experience disease stabilization and have a longer time to disease progression (usually greater than 18 months after the end of PRRT treatment), or as a nonresponder, who will have a shorter time until the disease progresses (usually less than 12 months after the start of PRRT). According to a research paper published in April (Bodei L, et al. J Nucl Med. 2023;64[9]:1329–1330), the PPQ delivers 96 percent accuracy in determining patient response to PRRT.
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