Xilis, a pioneering biotechnology company developing its MicroOrganoSphere™ (MOS™) technology to guide precision therapy for cancer patients and accelerate drug discovery and development, has closed an extension of over $19 million to its Series A financing round, bringing the total amount raised to over $89 million. New investor FPV Ventures led the extension, with participation from fellow new investor Alexandria Venture Investments and existing investors EQT Life Sciences, Mubadala Capital Management, Pear Ventures, GV (formerly Google Ventures), the Duke Angel Network, Catalio Capital Management, Two Sigma Ventures, Felicis Ventures, Alix Ventures and other strategic partners.

Xilis is a biotechnology company developing a precision oncology platform that guides treatment decisions for oncologists to improve cancer care outcomes for patients and enables drug discovery and development with pharmaceutical companies. Xilis' proprietary MicroOrganoSphere™ (MOS) technology consists of miniature patient tumors that capture the full microenvironment and heterogeneity and provides an automated and scalable solution. Using MOS and AI-driven algorithms, Xilis is developing a Xilis Response Score™ for the clinic, enabling oncologists to make informed and timely treatment decisions. Additionally, the MOS technology is speeding up the discovery and clinical development of new drug candidates.