OncoMethylome Sciences SA is a Belgium-based molecular diagnostics company that develops gene methylation tests for early cancer detection and personalized treatment decisions. It develops tests to assist physicians in detecting cancer and in predicting a patient's response to cancer therapy or the likelihood of cancer recurrence. As of December 31, 2009, OncoMethylome has three subsidiaries: OncoMethylome Sciences BV (the Netherlands); OncoMethylome Sciences Inc (United States of America); and OncoMethylome BVBA (Belgium).