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BACKGROUND Growth differentiation factor 15 (GDF-15), a stress-responsive biomarker, is known to be independently associated with mortality and cardiovascular events in different disease settings, but data on the prognostic value of GDF-15 after stroke are limited. METHODS Baseline serum GDF-15 was measured in 3066 acute ischemic stroke patients from the China Antihypertensive Trial in Acute Ischemic Stroke (CATIS). The primary outcome was a composite of death and major disability within 3 months. Secondary outcomes included death, major disability, vascular events, and stroke recurrence. The associations between GDF-15 and clinical outcomes after stroke were assessed by multivariate logistic regression or Cox proportional hazards models. RESULTS At 3 months' follow-up, 676 (22.05%), 86 (2.80%), 81 (2.64%), and 51 (1.66%) patients had experienced major disability, death, vascular events, or stroke recurrence, respectively. After adjusting for age, sex, current smoking, alcohol consumption, and baseline National Institutes of Health Stroke Scale score, the odds ratio/hazard ratio (95% CI) of 1 SD higher of base-10 log-transformed GDF-15 was 1.26 (1.15–1.39) for primary outcome, 1.13 (1.02–1.25) for major disability, 1.79 (1.48–2.16) for death, and 1.26 (1.00–1.58) for vascular events. The addition of GDF-15 to established risk factors improved risk prediction of the composite outcome of death and major disability (c-statistic, net reclassification index, and integrated discrimination improvement, all P &amp;lt; 0.05). CONCLUSIONS High GDF-15 concentrations are independently associated with adverse clinical outcomes of acute ischemic stroke, suggesting that baseline serum GDF-15 could provide additional information to identify ischemic stroke patients at high risk of poor prognosis.

Increased Growth Differentiation Factor 15 Is Associated with Unfavorable Clinical Outcomes of Acute Ischemic Stroke