We’ve developed a new approach to CD47 blockade that is designed to maximize clinical activity and minimize toxicities

Our goal is to transform cancer treatment options for patients by developing ALX148 as a foundational checkpoint immunotherapy

ALX Oncology was founded by a team of industry veterans to address fundamental challenges in blocking CD47 and to realize the full potential of this therapeutic target.

Cancer cells employ CD47, a cell surface protein, as a “don’t eat me” signal to evade detection by the immune system. ALX is developing a next-generation checkpoint inhibitor designed to have a high affinity for CD47 and to avoid the limitations caused by hematologic toxicities inherent in other CD47 blocking approaches. We believe our lead product candidate, ALX148, will have a wide therapeutic window to block the “don’t eat me” signal on cancer cells, and to leverage the immune activation of broadly used anti-cancer agents through combination strategies. Based on our clinical results to date in multiple oncology indications showing encouraging anti-tumor activity and tolerability, our strategy is to pursue ALX148 as a potentially critical component for future combination treatments in oncology.

Latest News updated at 23:27:51 UTC

Apr 21, 2021

ALX Oncology to Present ALX148 Clinical Data at the ESMO 23rd World Congress on Gastrointestinal Cancer

Apr 05, 2021

ALX Oncology Strengthens IP Portfolio; Announces End of Post-Grant Review Period for Issued U.S. Patent Covering ALX148

Mar 18, 2021

ALX Oncology Reports Fourth Quarter and Full Year 2020 Financial Results and Provides Clinical Development and Operational Highlights and Upcoming Milestones


ALX Oncology CEO, Jaume Pons, will present at @NYASciences’ Frontiers in Cancer Immunotherapy 2021 on May 13. View the conference details and agenda here: https://bit.ly/3eXizl5

ALX Oncology will present ALX148 clinical data at the ESMO 23rd World Congress on Gastrointestinal Cancer, June 30 - July 3, 2021: https://bit.ly/3nbNT3h

ALX Oncology announces end of post-grant review period for issued U.S. #Patent No. 10,696,730 covering #ALX148, strengthening #IP portfolio: https://bit.ly/2PzFoCC

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Our Technology

ALX Oncology’s fusion proteins are engineered to bind CD47 with significantly greater affinity than natural SIRPα. Our lead candidate, ALX148, is an intravenously administered fusion protein containing two engineered high affinity CD47 binding domains of SIRPα linked to an inactive Fc region of human immunoglobulin.