Spear Bio is a Woburn, Massachusetts biotechnology company commercializing SPEAR (Successive Proximity Extension Amplification Reaction), an ultra-sensitive, wash-free immunoassay platform licensed from Harvard's Wyss Institute. SPEAR measures protein biomarkers at attomolar levels from sub-microliter samples using a two-factor authentication mechanism and standard qPCR instruments, delivering more than a 5-log improvement over conventional ELISA. The company sells assay kits - initially for neurodegeneration biomarkers such as pTau217, pTau231, GFAP and neurofilament light - to academic, pharmaceutical and clinical researchers.
Pleno Inc. is a San Diego multi-omic instrument company rebuilding the economics of biological target detection. Its RAPTOR platform, powered by proprietary Hypercoding technology borrowed from telecommunications signal processing, can detect up to 10,000 targets in a single sample at PCR-like speed and cost. Founded by serial entrepreneur Pieter van Rooyen, the company is moving from R&D into commercial launch with backing from Deerfield Management and Foresite Capital.