Microcephaly-cerebellar hypoplasia-cardiac conduction defect syndrome

What it is

Microcephaly-cerebellar hypoplasia-cardiac conduction defect syndrome is a rare, genetic congenital anomalies/dysmorphic syndrome characterized by growth failure, global developmental delay, profound intellectual disability, autistic behaviors, acquired second-degree heart block with bradycardia and vasomotor instability. Hands and feet present with long fusiform fingers, campto-clinodactyly and crowded toes while craniofacial dysmorphism includes microcephaly, broad forehead, thin eyebrows, upslanting palpebral fissures, large ears with prominent antihelix, prominent nose, long philtrum, thin upper lip vermillion and prominent lower lip. Neurological signs include hypotonia, brisk reflexes, dystonic-like movements and truncal ataxia and imaging shows cerebellar hypoplasia and simplified gyral pattern.

Key facts

Prevalence

<1 / 1 000 000

Age of onset

Infancy, Neonatal

Inheritance

Autosomal recessive

Classified as

Malformation syndrome

Prevalence figures describe populations, not individuals, and are often estimates from a single study. Where the figure is an incidence or a birth prevalence, it says so.

ICD-10 codes

ICD-10 has no distinct code for most rare diseases, so many are filed under the nearest available one. A shared code identifies the group, not this disease — the ORPHAcode above is what identifies it.

Related health topics

Reached through the ICD-10 categories this disease is filed under, so these describe the broader group rather than this disease specifically.

Cross-references