Red cell transfusion thresholds in myelodysplastic syndromes: a clinician survey to inform future clinical trials.

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Optimal red cell transfusion thresholds in myelodysplastic syndrome are not established. In this survey of 110 Australasian haematologists' practice in myelodysplastic syndrome-related anaemia, 92% of respondents set transfusion thresholds, and would typically transfuse at a haemoglobin <80 g/L aiming for a post-transfusion haemoglobin 90-100 g/L, reflecting a restrictive transfusion strategy. Higher thresholds were typically used for patients with cardiovascular disease or anaemia symptoms. These results will inform the design of clinical trials comparing transfusion thresholds.