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Abstract
Patients with ALS may have insufficientenergy substrates, due to dysphagia and hypermetabolism, which adversely affects the prognosis. Hyperlipidaemia has been reported to be associated with ALS and to represent a significant prognostic factor for survival in ALS. The aim of this study was to examine the prevalence of dyslipidaemia among a cohort of patients with ALS and how the lipid profile of patients with ALS influenced the prognosis. This was a prospective observational cohort study comprising 512 ALS patients, recruited for the TRO19622 (Olesoxime) investigational medicinal product trial. Fasting serum concentrations of total cholesterol (TC), low density lipoprotein cholesterol (LDL-C) and high density lipoprotein cholesterol (HDL-C) were measured as part of routine monitoring in the trial. Seventy-three percent of the participants had hypercholesterolaemia (defined as total cholesterol ≥ 5.1 mmol/l) at the screening visit. The prevalence of hypercholesterolaemia decreased with time and was 64% at 18 months follow-up. On unadjusted analysis total cholesterol, LDL-C and LDL/HDL ratio had a statistically significant effect on survival (p = 0.015, 0.003 and 0.027, respectively). When adjusted for prognostic covariates, however, none of the lipid measures was found to have a statistically significant effect on survival. In conclusion, prognosis in ALS is not influenced by the lipid profile of patients.
Acknowledgements
We thank the steering committee of TROPHOS, who kindly provided the data base of TRO19622 trial to conduct this study. PJS is supported as an NIHR Senior Investigator.
Declaration of interest: The authors report no conflicts of interest. The authors alone are responsible for the content and writing of the paper.