22 GHP / Q3 2019 , • Positive results for Early detection of Cancer of the Lung Scotland (“ECLS”) trial presented at theWorld Conference for Lung Cancer in Barcelona • The ECLS trial, conducted in Scotland with 12,209 patients, is believed to be the largest randomised controlled trial using blood biomarkers for the detection of lung cancer • Further validates the use of Oncimmune’s platform technology as a screeningmodality, which can detect cancer four years or more before standard clinical diagnosis Ground-Breaking Trial Demonstrates Potential Of Blood Test Which Harnesses The Power Of The Immune System To Reduce Late Detection Of Lung Cancer Oncimmune Holdings plc (AIM: ONC.L), a leading global immunodiagnostics group, welcomed the presentation of data by Professor Frank Sullivan (Chief Investigator on the ECLS trial) which has demonstrated the potential of Oncimmune’s EarlyCDT ® Lung test to reduce the incidence of patients with late-stage lung cancer at diagnosis, compared with standard clinical diagnosis. In a randomised controlled trial of 12,209 people in Scotland at high risk of developing lung cancer, it was shown that more people were diagnosed at an early stage of the disease in the two years after taking the EarlyCDT Lung test than those in the control arm who received standard clinical care. The findings, presented at the 2019 World Conference on Lung Cancer hosted by the International Association for the Study of Lung Cancer (IASLC) in Barcelona today, are an important validation of Oncimmune’s diagnostic platform technology which harnesses the power of the immune system, to detect evidence of the body’s natural response to cancer. The technology can detect cancer four years or more before standard clinical diagnosis. Oncimmune’s patented technology works by detecting the presence of autoantibodies generated by the body’s immune system as a natural defence against cancer cells. Lung cancer was chosen as the first target of the technology because it is the world’s leading cause of cancer-related death and is often detected at an advanced stage with approximately 85% of patients in the UK undiagnosed until the disease has spread to other parts of the body. The ECLS trial is believed to be the largest randomised controlled trial for the detection of lung cancer using biomarkers conducted anywhere in the world. Among those people who received the EarlyCDT Lung test and went on to develop lung cancer within the next two years, 41.1% were diagnosed at an early stage (stage 1&2) of the disease, compared with 26.8% among the control group subject to standard clinical practice. This resulted in a 36% reduction in late stage presentation after 2 years of follow up in subjects randomised to the EarlyCDT test. The trial also showed a lower rate of deaths among people in the intervention arm of the trial after two years compared with people in the control group. Lung cancer-specific deaths were also lower in the intervention group. This suggests that the EarlyCDT Lung test followed by CT imaging could produce a mortality benefit, although the trial was not powered to demonstrate such a trend after two years. The next step is to move to a larger population-based evaluation in up to 200,000 patients to assess the implications of diagnosis with EarlyCDT Lung on survival and mortality in a real-world setting.