
ACMG Education Webinar Series: Translating Genes into Health®
Date of Release: July 2, 2025
Expiration Date: July 2, 2027
Credits offered: AMA PRA Category 1 Credits™
Estimate time of completion: 1.0 hour
Expanding Phenotypes of Female Heterozygotes in X-Linked Neurogenetic Conditions
Sponsored by The Education and Professional Development Committee
Description
Historically categorized as either "X-linked recessive" or "X-linked dominant," X-linked neurogenetic conditions have long been considered male-predominant. However, emerging research and clinical evidence reveal that female heterozygotes—once thought to be largely unaffected—can experience significant symptoms due to variability in X-inactivation (lyonization). This paradigm shift is reshaping how these conditions are understood, diagnosed, and managed.
Join us for a one-hour webinar exploring the evolving clinical phenotypes of females with X-linked neurogenetic disorders. Through expert-led presentations featuring clinical cases, neuroimaging, genetic insights, and updated terminology, this session will provide valuable updates for clinicians, researchers, and genetic counselors.
Learning Objectives
At the conclusion of this session, participants should be able to:
- Discuss the mechanisms leading to variable penetrance and phenotype in heterozygotes with X-linked conditions.
- Explain the different phenotypes and data from multi-modal imaging in OTC heterozygotes.
- Summarize presentations in X-ALD females, pathophysiology, diagnostic/management strategies and emerging therapies.
- List DMD diagnostic strategies, clinical manifestations and appropriate management in DMD heterozygote females.
- Summarize presentations in PDHA1 females, pathophysiology, diagnostic/management strategies