6q terminal deletion syndrome

What it is

A rare partial deletion of the long arm of chromosome 6 characterized by a variable clinical phenotype that includes a characteristic craniofacial dysmorphism (including microcephaly, broad nose with prominent nasal root and bulbous nasal tip, large ears that may be malformed and low-set, characteristic downturned mouth, and short neck), global development delay, intellectual disability, and variable, non-specific, congenital malformations. Muscular hypotonia, seizures, retinal anomalies, and variable brain abnormalities have been reported in association.

Key facts

Prevalence

<1 / 1 000 000

Age of onset

Infancy, Neonatal

Inheritance

Not applicable, Unknown

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.

Gene

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