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No Evidence of Early Developmental Delay in Juvenile-Onset Huntington's Disease Patients

Lucy Olson1, Sarah Dickens1, Jordan L Schultz1

  • 1Department of Psychiatry, Carver College of Medicine at the University of Iowa, Iowa City, Iowa, USA.

Movement Disorders Clinical Practice
|December 7, 2024
PubMed

Insights

Juvenile-Onset Huntington's disease (JOHD) does not appear to cause developmental delay before motor symptoms emerge. This study found no significant differences in birth history or developmental milestones between JOHD patients and controls.

Area of Science:

  • Neuroscience
  • Genetics
  • Pediatrics

Background:

  • Previous studies suggested developmental delay in Juvenile-Onset Huntington's disease (JOHD), particularly with high CAG repeat counts.
  • These suggestions were based on retrospective chart reviews, lacking comprehensive birth history data.
  • A detailed assessment of birth metrics is needed to clarify early development in JOHD.

Purpose of the Study:

  • To investigate the prevalence of prematurity, birth complications, low birth weight, and developmental delay in JOHD patients.
  • To compare these factors between JOHD patients and gene-non-expanded (GNE) control participants.

Main Methods:

  • Parents of JOHD patients and GNE controls completed a birth history questionnaire.
  • The questionnaire collected data on prematurity, birth complications, and birth weight.
  • Early developmental milestones were also assessed and compared between groups.

Main Results:

  • No significant differences were found in prematurity, birth weight, or birth complications between JOHD patients and GNE controls.
  • Motor and verbal developmental milestones did not differ significantly between the groups.
  • Stratifying JOHD patients by CAG repeat expansion (low vs. high) also revealed no significant differences compared to controls.

Conclusions:

  • The study findings suggest that JOHD does not manifest with developmental delay prior to the onset of motor symptoms.
  • This research provides a new perspective on understanding the progression and characteristics of JOHD.
  • Further investigation into the early life development of JOHD patients is warranted.
Abstract

Keywords:
Huntington's diseaseJOHDbirth metricsdevelopmental delayhigh CAG

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