Paris (France), January 20, 2020 – 5:45 pm CET – Onxeo S.A. (Euronext Paris, NASDAQ Copenhagen: ONXEO), (“Onxeo” or “the Company”), a clinical-stage biotechnology company specializing in the development of innovative drugs targeting tumor DNA Damage Response (DDR), in particular against rare or resistant cancers, today announces the publication of its shareholder letter.

In this new issue, readers will find out about Onxeo’s perspectives for 2020 and the clinical development plan of AsiDNA™, notably about an upcoming clinical study designed to evaluate the effect of AsiDNA™ in combination with niraparib on the abrogation of tumor resistance to this PARP inhibitor, approved as a 2^nd line maintenance therapy for recurrent ovarian cancer.

To read the Letter, please visit the Company's website:

https://www.onxeo.com/news-events/shareholder-letters-news/

• Access the press release in .pdf format