ArticleAnnals of clinical and translational neurology2026
Exploratory Analysis of ELP1 Expression in Whole Blood From Patients With Familial Dysautonomia.
Article in Annals of clinical and translational neurology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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Who cites it
1 citing paper in PubMed.
- Exploratory Analysis of ELP1 Expression in Whole Blood From Patients With Familial Dysautonomia.Annals of clinical and translational neurology · 2026Article
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Authors and funding
14 authors.
Funding
Abstract
backgroundFamilial dysautonomia (FD) is a hereditary neurodevelopmental disorder caused by aberrant splicing of the ELP1 gene, leading to a tissue-specific reduction in ELP1 protein expression. Preclinical models indicate that increasing ELP1 levels can mitigate disease manifestations. A blood-based ELP-1 protein assay may provide a reliable way to monitor gene target engagement. DESIGN AND
methodsUsing a newly developed radioimmunoassay, we quantified ELP1 protein levels in peripheral blood samples collected from 59 homozygous FD patients carrying the IVS20 + 6T>C mutation and 66 heterozygous carriers. To assess the reproducibility of the measurement, replicate samples were collected in 43 participants. Longitudinal variability was evaluated in 22 participants who underwent repeat sampling 1 year later.
resultsELP1 protein levels were significantly lower in FD patients compared to heterozygous carriers (244 ± 75 vs. 2210 ± 1031 pg/mL, p < 0.001). Replicate analysis of 43 paired samples showed strong consistency in ELP1 levels (p < 0.000). Repeat measurements 1 year after baseline showed longitudinal stability (R
conclusionBlood ELP1 levels are robust and reproducible, with concentrations below 492 pg/mL strongly indicative of disease. Moreover, given their longitudinal stability, ELP1 can serve as a marker of target engagement to evaluate the efficacy of gene-targeted therapies aimed at correcting ELP1 gene splicing and protein production.
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