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A novel L1CAM mutation with L1 spectrum disorders
Fatma Silan1, Ismail Ozdemir, Willy Lissens
1Medical Biology and Genetic Department, Abant Izzet Baysal University, Duzce School of Medicine, Duzce, Turkey. fsilan@yahoo.com
Prenatal Diagnosis
|January 22, 2005
Summary
X-linked hydrocephalus and related disorders stem from L1CAM gene mutations. This study identifies a novel mutation in a family, aiding in prenatal diagnosis and carrier detection for these L1 spectrum disorders.
Area of Science:
- Genetics
- Neurology
- Developmental Biology
Background:
- X-linked hydrocephalus and associated syndromes (HSAS, MASA, CRASH) are allelic disorders.
- These conditions result from mutations in the L1CAM gene, which encodes a neural cell adhesion molecule.
Observation:
- Two cases of L1 spectrum disorders within the same family were identified.
- One case was diagnosed prenatally via ultrasonography, and the second was diagnosed postnatally.
Findings:
- Both affected individuals and their mothers carried a novel mutation in the L1CAM gene.
- The family exhibited nine cases of X-linked hydrocephalus and five asymptomatic female carriers across three generations.
Implications:
- Molecular genetic analysis is crucial for detecting asymptomatic carriers of L1CAM mutations.
- Early prenatal diagnosis of L1 spectrum disorders can be achieved through advanced imaging techniques.
- Understanding L1CAM mutations aids in diagnosing and managing a spectrum of neurodevelopmental disorders.