The new EurOPDX Research Infrastructure (RI), aims to improve cancer drug development success rates through the enablement of collaborative cancer research using patient-derived xenograft (PDX) models (www.europdx.eu). In this webinar we will be presenting the EurOPDX RI and the possibilities of access to PDX models, as well as the functionalities of the EurOPDX Data Portal (https://dataportal.europdx.eu), with the objective to support future applicants to our PDX access grant programme.