Height, weight, and body mass index in patients with familial dysautonomia

Author:

Cotrina Maria L.ORCID,Morgenstein Barr,Perez Miguel,Norcliffe-Kaufmann Lucy,Palma Jose-AlbertoORCID,Kaufmann Horacio

Abstract

Background Children with familial dysautonomia (FD) are smaller and grow more slowly than the general population. It is unknown whether this abnormal growth is due to comorbidities that patients with FD live with, or if it is a direct effect of the disease-causing homozygous ELP-1 mutations. Here, we created growth curves for weight, height, and body mass index (BMI) in male and female children with FD to monitor the nutritional status of patients with FD. Methods We used the New York University (NYU) FD Registry which includes data from 680 individuals with FD who were followed longitudinally since birth. We generated sex-specific FD growth charts for three age ranges (birth to 36 months, 2 to 20 years, and 2 to 40 years) and compared them to the general population. We generated Kaplan-Meier curves to test the hypothesis that FD patients with low BMI had shorter survival than the rest of the cohort. Results Growth charts generated from 591 individuals with FD show that these patients grow more slowly, reach less height, and gain less weight than the general population. The impact of FD on height was more pronounced in girls than in boys. However, both groups showed markedly low weights, which resulted in low BMI. Low weight, but not height, is already evident at birth. In a subpopulation of FD patients, we found that treatment with growth hormone or spinal fusion surgery helped patients achieve the expected growth characteristic of FD patients, but these treatments did not lead FD patients to achieve the growth pattern of the general population. Contrary to our hypothesis, low BMI had no impact on patient survival. Conclusions Pediatric patients with FD have lower height, weight, and BMI compared to the general pediatric population, but this does not appear to affect survival. Growth curves specific to the FD population are an important tool to monitor growth and nutritional status in pediatric patients with FD when the general population growth curves are of limited use.

Funder

Familial Dysautonomia Foundation

Publisher

Public Library of Science (PLoS)

Subject

Multidisciplinary

Reference21 articles.

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2. Tissue-specific expression of a splicing mutation in the IKBKAP gene causes familial dysautonomia;SA Slaugenhaupt;Am J Hum Genet,2001

3. Familial dysautonomia: History, genotype, phenotype and translational research;L Norcliffe-Kaufmann;Prog Neurobiol,2017

4. Sudden Unexpected Death during sleep in Familial Dysautonomia: A Case-Control Study;JA Palma;SLEEP

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