DECISION AIDS’ EFFICACY TO SUPPORT WOMEN AND YOUNG ADULT'S FERTILITY PRESERVATION CHOICES BEFORE CANCER TREATMENT: AN ENVIRONMENTAL SCAN. Neda Mahmoodi, Leeds Institute of Health Sciences, University of Leeds Hilary L Bekker, Leeds Institute of Health Sciences, University of Leeds Natalie V King, Leeds Institute of Health Sciences, University of Leeds Jane Hughes, Faculty of Health & Social Sciences, Leeds Beckett University Georgina Jones, Faculty of Health & Social Sciences, Leeds Beckett University On behalf of the Cancer, Fertility and Me research group. Introduction To evaluate patient information and clinical guidelines developed to support women (16+ years) making fertility preservation (FP) choices before cancer treatment. Some cancer treatments increase women’s chance of infertility, oncology and fertility services provide information preparing women for FP choices whilst managing cancer, yet some women feel unsupported. Method A systematic environmental scan of open-access decision support resources were carried out (December 2015). Three data sources were searched: internet (Google): healthcare decision support repositories (Decision Aids Library Inventory; Trips; NHS Evidence; National Guidelines Clearinghouse; Clinical Trials); shared decision making experts (SHARED-L distribution list). Inclusion criteria were: women receiving cancer treatment; cancer treatment options provided; FP options provided; statements supporting women’s decision making. The International Patient Decision Aid Standards (IPDAS) criteria informed the data extraction sheet developed to elicit information about resources’ content. Results 116 patient decision aids (DAs) and 42 clinical guidelines were identified; 24 DAs met the inclusion criteria. Resources varied in amount (2-90 pages) and type (pdf -App) of information. A third stated the resource’s purpose was to support women’s decision making. Most aimed to inform women for FP procedures; and provided questions for women to engage with health professionals rather than supporting deliberative thinking about which options best fit their life now, and after cancer treatment. About 20% adhered to IPDAS guidance. Discussion Resources provided information about FP and infertility treatment options. A DA supporting women’s deliberation about FP, or not, when receiving treatment for any cancer is likely to meet UK and international service needs