The NIDA International Program and the Division of Epidemiology, Services and Prevention Research will host the 12th Annual NIDA International Society for Prevention Research (SPR) Poster Session. The SPR 27th Annual Meeting will focus on the use of "big data" in designing and evaluating prevention interventions. The meeting will be held May 28–31, 2019, in San Francisco, California. The NIDA International SPR Poster Session will take place in conjunction with the SPR opening reception, following the preconference workshops on May 28, 2019. NIDA will provide a limited number of travel awards to provide partial support for international researchers whose abstracts have been accepted for presentation at the 2019 NIDA International SPR Poster Session. More details about the meeting, including the call for abstracts, will be online in late September at www.preventionresearch.org.