5 April 2024 Avacta Group plc(“Avacta” or “the Group” or “the Company”) AVA6000 Abstract Release by AACR and Full Presentation Update Avacta Group plc (AIM: AVCT), a life sciences company developing innovative, targeted oncology drugs and powerful diagnostics, today announces that the abstract of the poster to be presented at the American Association of Cancer Research (“AACR”) Annual Meeting in San Diego, California on Tuesday 9 April has now been released by AACR. The poster presentation will be based on data from the Phase 1a trial of AVA6000, a peptide drug conjugate consisting of doxorubicin conjugated with a peptide moiety that is specifically cleaved by fibroblast activation protein (FAP) in the tumor microenvironment. Christina Coughlin, MD, PhD, Head of Research & Development and Simon Bennett, DPhil, Chief Business Officer, will be attending the conference with colleagues. Presentation details Title: A Phase 1 trial of AVA6000, a Fibroblast Activation Protein (FAP)-released and tumor microenvironment (TME)-targeted doxorubicin peptide drug conjugate in patients with FAP-positive solid tumors Session Title: First-in-Human Phase 1 Clinical Trials 2 Session Date and Time: Tuesday 9 April 2024 9:00 AM - 12:30 PM (PDT) Location: San Diego Convention Center, San Diego CA USA Abstract Presentation Number: CT188 First Author: Udai Banerji, MD, PhD, The Institute of Cancer Research, London, and The Royal Marsden NHS Foundation Trust The presentation will include updated data from the Phase 1 trial beyond those included in the abstract. A copy of the abstract will be available on Avacta’s website at: https://avacta.com/about/scientific-resources/. Copies of the poster will be available on Avacta's website following the conference at: https://avacta.com/about/resources/posters/. Christina Coughlin will provide a video presentation overview examining the data presented in the poster. This will be available on 10th April at https://avacta.com/investors/documents-presentations/. Alastair Smith, Avacta Chief Executive Officer, will also be hosting a webinar on Wednesday, April 10 2024 at 5.30pm BST to discuss the data. Registration for the event is via the following link:https://www.turnerpope.com/register/ -Ends- For further information from Avacta Group plc, please contact: Avacta Group plcAlastair Smith, Chief Executive OfficerTony Gardiner, Chief Financial OfficerMichael Vinegrad, Group Communications DirectorTel: +44 (0) 1904 21 7070www.avacta.com Stifel Nicolaus Europe Limited (Nomad and Joint Broker)Nicholas Moore / Nick Adams / Samira Essebiyea / Nick Harland / Ben GoodTel: +44 (0) 207 710 7600www.stifel.comPeel Hunt (Joint Broker)James Steel / Chris Golden / Patrick BirkholmTel: +44 (0) 207 418 8900www.peelhunt.com ICR Consilium (Media and IR)Mary-Jane Elliott / Jessica Hodgson / Sukaina Virjiavacta@consilium-comms.com About AVA6000AVA6000, Avacta Therapeutics’ lead oncology program, is a peptide drug conjugate consisting of doxorubicin conjugated with a peptide moiety that is specifically cleaved by fibroblast activation protein (FAP) in the tumor microenvironment (TME). FAP is selectively overexpressed in many solid tumors. The peptide moiety (pre|CISIONTM) prevents cellular entry of doxorubicin unless cleaved by FAP, thus enabling targeted delivery of doxorubicin directly to the TME. About Avacta Group plc - https://www.avacta.comAvacta Group is a UK-based company focused on improving healthcare outcomes through targeted cancer treatments and diagnostics. Avacta has two divisions: an oncology biotech division harnessing proprietary therapeutic platforms to develop novel, highly targeted cancer drugs, and a diagnostics division, which is executing on an M&A led growth strategy to create a full-spectrum diagnostics business focused on supporting healthcare professionals and broadening access to testing. Avacta’s two proprietary platforms, Affimer® and pre|CISION™ underpin its cancer therapeutics whilst the diagnostics division leverages the Affimer® platform to drive competitive advantage in its markets. The pre|CISION™ platform modifies chemotherapy to be activated only in the tumour tissue, reducing systemic exposure and toxicity. This is achieved by harnessing an enzyme called FAP which is highly upregulated in most solid tumours compared with healthy tissues, turning chemotherapy into a “precision medicine”. The lead pre|CISION™ programme, AVA6000 a tumour activated form of doxorubicin, is in Phase 1 studies and has shown dramatic improvement in safety compared with standard doxorubicin, and early signs of clinical activity. To register for news alerts by email go to https://avacta.com/investors/investor-news-email-alerts/