Cri-du-Chat Syndrome
Also known as: 5p Minus Syndrome, Cat Cry Syndrome
Cri-du-Chat syndrome is a rare genetic disorder caused by a deletion of genetic material on the short arm (p arm) of chromosome 5. The syndrome is characterized by a distinctive, high-pitched, cat-like cry in infancy, intellectual disability, delayed development, distinctive facial features, and small head size (microcephaly).
Cri-du-Chat is when a tiny piece of a baby's body plan is missing. It makes them cry like a cat, and they might need extra help learning and growing.
Signs & Symptoms
- High-pitched, cat-like cry in infancy
- Intellectual disability
- Developmental delay
- Microcephaly (small head size)
- Hypotonia (poor muscle tone)
- Distinctive facial features (e.g., hypertelorism, epicanthal folds, micrognathia)
- Heart defects
- Failure to thrive
- Feeding difficulties
- Scoliosis
Treatment Options
Early Intervention Programs
HIGHLY EFFECTIVEPhysical Therapy
MODERATELY EFFECTIVEOccupational Therapy
MODERATELY EFFECTIVESpeech Therapy
MODERATELY EFFECTIVENutritional Support
SUPPORTIVECardiac Surgery (if congenital heart defects are present)
HIGHLY EFFECTIVEMedications for specific symptoms (e.g., seizures)
MODERATELY EFFECTIVEDiagnosis
- Karyotype analysis
- Fluorescence in situ hybridization (FISH)
- Chromosomal microarray analysis (CMA)
- Clinical evaluation
History
Cri-du-Chat syndrome was first described by Jérôme Lejeune in 1963, who identified the chromosomal deletion responsible for the condition.
Recent Breakthroughs
Improved Understanding of Genotype-Phenotype Correlation in Cri-du-Chat Syndrome
Recent studies have focused on refining the genotype-phenotype correlation in Cri-du-Chat syndrome, aiming to identify specific genes within the deleted region that contribute to particular clinical features. This research may lead to more targeted interventions.
Longitudinal Studies on Cognitive and Adaptive Outcomes
Longitudinal studies are tracking the cognitive and adaptive outcomes of individuals with Cri-du-Chat syndrome over time. These studies provide valuable insights into the natural history of the condition and inform the development of individualized management plans.