Oncimmune Regulatory News (ONC)

7 March 2022

Oncimmune Holdings plc

("Oncimmune" or the "Company")

Follow-on contract signed with leading US medical research organisation, to validate previous profiling in COVID-19

Oncimmune Holdings plc (AIM: ONC.L), the leading global immunodiagnostics group, today announces the signing of a new commercial follow-on contract with a world-leading medical research organisation based in the US, to validate the findings from a previous study to assess the autoimmune responses to SARS-CoV-2 infection in immune-compromised patients.

Under the terms of this follow-on contract, new samples will be analysed using Oncimmune's existing SeroTagTM COVID-19 autoantigen array, to confirm the autoimmune reactions already seen in patients with underlying autoimmune diseases, such as irritable bowel disease.

Dr Adam M Hill, CEO of Oncimmune said: "We have now successfully completed four studies for this world-leading medical research organisation relating to COVID-19. This latest additional contract, utilising Oncimmune's validated infectious diseases panel, will proceed to validate the findings from our prior contract. This follow-on contract and others we have announced underlines Oncimmune's leading position in autoimmune profiling of infectious disease."

For further information:

Oncimmune Holdings plc

Dr Adam M Hill, Chief Executive Officer

Matthew Hall, Chief Financial Officer

contact@oncimmune.co.uk

Singer Capital Markets (Nominated Adviser and Joint Broker)

Aubrey Powell, Harry Gooden, George Tzimas, James Fischer

+44 (0)20 7496 3000

WG Partners (Joint Broker)

David Wilson, Nigel Barnes, Erland Sternby

+44 (0)20 3705 9321

Media enquiries:

FTI Consulting

Ben Atwell, Michael Trace, Alex Davis

Oncimmune@fticonsulting.com

+44 (0)20 3727 1000

About Oncimmune

ImmunoINSIGHTS Service Business

Oncimmune is a leading immunodiagnostics developer, primarily focused on the growing fields of immuno-oncology, autoimmune disease and infectious diseases. The ImmunoINSIGHTS service business leverages Oncimmune's technology platform and methodologies across multiple diseases, to offer life-science organisations actionable insights for therapies across the development and product lifecycle. Our core immune-profiling technology is underpinned by our library of over eight thousand immunogenic proteins, one of the largest of its kind. This helps identify trial participants and patients into clinically relevant subgroups, enabling development of targeted and more effective treatments.

Oncimmune's ImmunoINSIGHTS service business is based at the Company's discovery research centre in Dortmund, Germany. The business platform enables life science organisations to optimise drug development and delivery, leading to more effectively targeted and safer treatments for patients.

The ImmunoINSIGHTS development team is based in the US and Europe and Oncimmune is seeking to replicate the Dortmund facility in the US in the medium term.

EarlyCDT Product Business

Oncimmune's immunodiagnostic technology, EarlyCDT, can detect and help identify cancer on average four years earlier than standard clinical diagnosis. Our lead diagnostic test, EarlyCDT Lung, targets a vast market estimated to grow to £3.8bn by 2024. With over 200,000 tests already performed for patients worldwide and its use being supported by peer reviewed data in over 12,000 patients, we are poised to become an integral component of future lung cancer detection programmes, globally.

Oncimmune's diagnostic products business is located at its laboratory facility in Nottingham, UK.

For more information, visit www.oncimmune.com

What is SeroTagTM?

Oncimmune's proprietary biomarker discovery engine, which is leveraged in our ImmunoINSIGHTS services to discover and validate novel biomarkers can help stratify patients in multiple cancer indications and with different autoimmune diseases.

This high-throughput, multiplex technology is based on one of the largest, in-house protein libraries, as well as a unique, ever-growing repository of disease data for indications including, but not limited to, autoimmune diseases and cancer. As a result, SeroTag is helping to address and monitor a number of challenges currently hindering the successful development and broader application of both cancer immunotherapies and treatments for autoimmune diseases.

The platform is being applied to discover and validate biomarkers and develop precision diagnostic tools from minimally invasive liquid biopsies. SeroTag analyses autoantibodies-some of the most stable analytes-and is used most frequently for the identification of IgG isoforms, in addition to IgM and IgA, from just a few drops of serum.

The SeroTag platform acts as the primary discovery engine that feeds into the creation of Oncimmune's NavigAIDTM disease-specific stratification panels. These precision medicine tools which are enabling patient and disease stratification and support therapeutic development.