Cebiotex at the American Society of Clinical Oncology 2021 Posted on 11 June 202113 June 2021 by Cebiotex ASCO21: First-in-human administration of CEB-01, a novel drug delivery implant matrix, in patients with recurrent or locally advanced retroperitoneal soft tissue sarcoma (RPS) after surgery: Preliminary safety and pharmacokinetics report. Download poster Download abstract