Sinoatrial node dysfunction and deafness
General Information (adopted from Orphanet):
Synonyms, Signs: |
SANDD SANDD syndrome |
Number of Symptoms | 5 |
OrphanetNr: | 324321 |
OMIM Id: |
614896
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ICD-10: |
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UMLs: |
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MeSH: |
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MedDRA: |
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Snomed: |
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Prevalence, inheritance and age of onset:
Prevalence: | < 0.1 of 100 000 |
Inheritance: |
Autosomal recessive 21131953 [IBIS] |
Age of onset: |
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Disease classification (adopted from Orphanet):
Parent Diseases: |
Genetic cardiac rhythm disease
-Rare cardiac disease -Rare genetic disease Syndromic genetic deafness -Rare developmental defect during embryogenesis -Rare genetic disease -Rare otorhinolaryngologic disease |
Comment:
Sinoatrial node dysfunction and deafness is a channelopathy caused by biallelic CACNA1D deficiency characterized by congenital deafness and severely impaired sinoatrial node dysfunction (PMID:21131953). |
Symptom Information:
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(HPO:0000365) | Hearing impairment | Very frequent [IBIS] | 21131953 | IBIS | 539 / 7739 | |
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(HPO:0001279) | Syncope | 21131953 | IBIS | 94 / 7739 | ||
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(HPO:0001662) | Bradycardia | Very frequent [IBIS] | 21131953 | IBIS | 41 / 7739 | |
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(HPO:0011702) | Abnormal electrophysiology of sinoatrial node origin | Very frequent [IBIS] | 21131953 | IBIS | 4 / 7739 | |
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(HPO:0005150) | Abnormal atrioventricular conduction | 21131953 | IBIS | 16 / 7739 |
Associated genes:
CACNA1D; |
ClinVar (via SNiPA)
Gene symbol | Variation | Clinical significance | Reference |
---|---|---|---|
CACNA1D | rs398122827 | pathogenic | RCV000032914.27 |
Additional Information:
Description: (OMIM) |
Patients with sinoatrial node dysfunction and deafness have congenital severe to profound deafness without vestibular dysfunction, associated with episodic syncope due to intermittent pronounced bradycardia (Baig et al., 2011). See Jervell and Lange-Nielsen syndrome (220400) for ... |
Clinical Description OMIM |
Baig et al. (2011) studied 2 consanguineous Pakistani families in which affected individuals had congenital deafness that was severe (71- to 95-dB loss) to profound (greater than 95-dB loss), without vestibular dysfunction. Three brothers and a sister were ... |
Molecular genetics OMIM |
In a consanguineous Pakistani family in which 4 sibs had congenital deafness and bradycardia mapping to chromosome 3p21, Baig et al. (2011) sequenced the candidate gene CACNA1D (114206) and identified homozygosity for a 3-bp insertion (114206.0001) that segregated ... |