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Cornelia de Lange Syndrome

Reports from the MHC data base

Report from the Observation Chart (PDF)


  • Brachmann-de Langes syndrom
  • de Langes syndrom
  • Typus degenerativus Amstelodamensis


ICD-10: Q87.1C
ORPHA: 199

Estimated occurrence

1:10 000 – 30 000 live births


Not completely known. The majority have a defect (mutation) on the NIPBL-gene on chromosome 5.

General symptoms

Children with the syndrome are low birth weight children. Characteristic symptoms of the syndrome include excessive body hair, delayed growth, particular facial features, short arms and legs with typical deformities of the lower arms and hands. Recently, a division between two types of CdL has begun to be made. Type I is the classic type, often with severe mental retardation, and is diagnosed immediately at birth. Type II is a considerably milder form, often not diagnosed until the age of two to three. Some children with CdL have autistic characteristics and are self-destructive. Vision and hearing problems are common. Congenital cardiac defects, deformities of the gastrointestinal system and epilepsy may also be present.

Orofacial/odontological symptoms

Characteristic facial features are associated with the diagnosis. Small jaws, widely-spaced teeth, small teeth, open bite and cleft lip and palate may occur. Tooth grinding and missing teeth are common. Infants often have difficulties with respiration and feeding. Gastroesophageal reflux and frequent vomiting is common and increase the risk for dental erosion and caries. Oral motor dysfunction may cause difficulties with eating and drooling. Most individuals with CdL syndrome never acquire speech. The voice is sometimes hoarse.

Orofacial/odontological treatment

  • Early contact with dental services for intensified prophylactic care and oral hygiene information is essential.
  • Regular check-ups of dental and jaw development. Orthodontist should be consulted when needed.
  • Tooth grinding should be followed up, and be managed with a splint when necessary.
  • Feeding and swallowing difficulties are investigated and treated by a specialist team at the hospital or multidisciplinary treatment center.
  • Oral motor skill training and communication practice are often required.
  • When treating medically compromised patients always contact their doctors for medical advice (bleeding problems, heart diseases etc.).


  • The rare disease database of the Swedish National Board of Health and Welfare.
  • The MHC database - The Mun-H-Center database on oral health and orofacial function in rare diseases.
  • The Documentation from the Ågrenska national competence centre for rare diseases.
Updated: 2017-09-12 13:57