Weaver syndrome

What it is

A rare PRC-2 complex-related overgrowth spectrum disorder characterized by pre- and post-natal overgrowth, facial dysmorphism (including hypertelorism, large fleshy ears and retrognathia with the appearance of a 'stuck-on' chin with associated horizontal skin crease) that is easily recognizable in early childhood. Majority of the patients present with mild intellectual disability. Additional variable features include macrocephaly, joint laxity, scoliosis, pectus excavatum, hypo- and/or hypertonia, poor coordination, soft dough skin, clinodactyly, camptodactyly of the fingers and/or toes, umbilical hernia, and a low hoarse cry in infancy. Many clinical features, including facial dysmorphism, attenuate with age. Patients may also have a higher risk of neuroblastoma.

Key facts

Prevalence

<1 / 1 000 000

Age of onset

Antenatal, Neonatal

Inheritance

Autosomal dominant, Not applicable

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.

Signs and symptoms

These ranges are how often a sign appears across everyone diagnosed, not a prediction for one person — most people have some of these and not others. Orphanet also records findings that are specifically absent in this disease; those are in the data but not listed here.

Genes

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