Mendus AB (publ) announced the presentation of three abstracts related to the development of Mendus' lead product candidate vididencel in acute myeloid leukemia (AML) at the American Society of Hematology's upcoming 65th Annual Meeting, held in San Diego, California December 9-12, 2023 (ASH 2023). Relapse-free and overall survival data from the ongoing ADVANCE II monotherapy trial will be presented as an oral presentation. Two additional abstracts will be presented by Mendus and academic collaborators based on immunomonitoring data, supporting vididencel's mechanism of action.

Of note, the oral presentation will present results from the ADVANCE II trial based on survival data which extend past the cut-off date as published in the ASH abstract submitted.ASH 2023 will take place on December 9- 12, 2023 at the San Diego Convention Center in San Diego, California, and virtually. Details of the Mendus abstracts to be presented are below: 1. Title: Induction of Cellular and Humoral Immune Responses Is Associated with Durable Remissions in MRD+ AML-Patients after Maintenance Treatment with an Allogeneic Leukemia-Derived Dendritic Cell Vaccine. Abstract Number: 769.

Presenter: Prof Dr A.A. van de Loosdrecht (Am Amsterdam UMC, The Netherlands) Session Name: 704. Cellular Immunotherapies: Early Phase and Investigational Therapies: Novel Approaches to Enhance Cellular Therapies and Immune Responses in Leukemias and Lymphomas Session Date:, December 11, 2023. Presentation Time: 6:00 PM - 8:00 PM.

Location: San Diego Convention Center, Halls G-H. 3. Intradermal Vaccination with Vididencel in MRD + AML-Patients Leads to Increase in Antigen Presenting Cells and T-Cells to the Injection Site, Visualized Using Imaging Mass Cytometry, Showing Local Immune Cell Interactions Leading to Systemic Immune Responses.Abstract Number: 2942. Presenter: Dr O. Sefland (Haukeland University Hospital, Bergen University, Norway) Session Name: 617. Acute Myeloid Leukemias: Biomarkers, Molecular Markers and Minimal Residual Disease in Diagnosis and Prognosis: Poster II.

Session Date: Sunday, December 10, 2023. Presentation time: 6:00 PM -8:00 PM. Location:San Diego Convention Center, Halls G. 3. Title: Intradermal Vaccination With Vididencel in MRD+ AML -Patients Leads to Increase Injection Site, Visualized using Imaging Mass Cytometry, showing Local Immune Cell Interaction Leading to Systemic Immune responsible to Systemic Immune Responsedes.

Abstract Number: 2942.Presenter: Dr. O. Sefland (Haukeland University Hospital,Bergen University, Norway) Session name: 617. AcuteMyeloid Leukemias; Biomarkers, MolecularMarkers and Minimal Residal Disease in Diagnosis and ProGNosis: Poster II. Session date: Sunday, December 10, 2020.

Presentation Time: 6.00 PM - 8:00PM. Location: San Diego Convention center, Halls G-H.