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Is Cornelia de Lange Syndrome Genetic?
Is Cornelia de Lange Syndrome hereditary? Here's what the research says about inherited risk.
- Heritability
- ~100%
- Inheritance
- autosomal-dominant
- Key genes
- NIPBL SMC1A HDAC8
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A multisystem developmental disorder caused by mutations in cohesin complex genes characterised by growth delay and limb abnormalities.
How Genetic Is Cornelia de Lange Syndrome?
Cornelia de Lange Syndrome has a strong genetic basis. Research estimates heritability at approximately 100%, meaning genetic factors account for the majority of variation in whether individuals develop this condition.
Key genes associated with Cornelia de Lange Syndrome: NIPBL SMC1A HDAC8. Variants in these genes have been identified through genome-wide association studies (GWAS) and clinical research as influencing susceptibility or severity.
Source: MedlinePlus Genetics
Does Family History Matter for Cornelia de Lange Syndrome?
Yes — family history is one of the strongest predictors of Cornelia de Lange Syndrome. If a first-degree relative (parent, sibling, or child) has been diagnosed, your own risk may be significantly elevated. Discussing your family history with a healthcare provider or genetic counsellor is strongly recommended.
Frequently Asked Questions
Is Cornelia de Lange Syndrome genetic?
This condition has a strong genetic basis. Studies suggest heritability of approximately 100%. Key genes involved include NIPBL SMC1A HDAC8.
Can a DNA test reveal my risk of Cornelia de Lange Syndrome?
Genetic testing can identify relevant variants, though Cornelia de Lange Syndrome risk is influenced by many factors. Talk to your doctor about appropriate testing.
Does family history matter for Cornelia de Lange Syndrome?
Yes — family history is one of the strongest predictors of Cornelia de Lange Syndrome. If a first-degree relative has been diagnosed, your own risk may be significantly elevated.
Is Cornelia de Lange Syndrome hereditary, meaning it's passed directly from parent to child?
Cornelia de Lange Syndrome follows a autosomal-dominant inheritance pattern in cases with a clear genetic cause, though not every case is inherited directly from a parent — some arise from new (de novo) mutations or a combination of genetic and environmental factors.
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- MedlinePlus Genetics
- MedlinePlus Genetics — National Library of Medicine
- CDC Genomics and Precision Health
Last updated: · Reviewed by the 247GeneticCheck editorial team
Content compiled with reference to peer-reviewed genetics literature and testing-provider documentation. This site does not provide medical or genetic counselling advice — always consult a healthcare professional or genetic counsellor before acting on DNA test results.