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e18232 Background: Cancer patients are at increased risk of developing diabetes mellitus (DM) or having worsening control of their pre-existent DM. The causes of this are multifactorial but the use of steroids, either in the palliative setting or short-term whilst on chemotherapy, is a significant contributor. An audit carried out at a district general hospital demonstrated that 5% of all oncology admissions were secondary to DM complications. A study was conducted to evaluate the prevalence of impaired blood glucose (BG) control and to assess the value of routine HbA1c testing in this population. Methods: Patients having routine chemotherapy blood tests were also tested for HbA1c over a 10 day period in December 2016. HbA1c diagnostic criteria was used as per NICE guidelines. Information on previous diabetic status, primary tumour type, chemotherapy status (number of cycles and treatment intent) was recorded. Results: 134 patients were tested for HbA1c; 28 (21%) had a HbA1c diagnostic of DM and 32 (24%) were at high risk of DM. The mean HbA1c of those in the DM group was 67.3 mmol/mol (range 48-120). Of the 28 with a HbA1C diagnostic of DM, 13 (46%) were already known to have DM with 15 (54%) being newly diagnosed from this study. 11 (73%) of those with a new diagnosis of DM were receiving a short course of steroids with chemotherapy. 12 patients in the DM group were having chemotherapy with curative intent; 6 of whom were newly diagnosed. Conclusions: 11% of the study cohort met criteria for a new diagnosis of DM with 73% of this group receiving steroids. NICE advises on monitoring of BG for all diabetics receiving steroids. Monitoring of BG and using anti-diabetic medications could prevent DM related complications. This highlights the need to involve local diabetic services and primary care providers for diabetic management. 43% of patients in DM group were receiving chemotherapy with curative intent. This has large implications on cancer survivorship and it is vital that these patients receive appropriate DM treatment. This will not only improve quality of care and patient satisfaction but also lead to significant cost savings from reduced admissions and length of stay in hospital. We therefore recommend a routine HbA1c test for all cancer patients having chemotherapy.

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