MULTISYSTEMIC SMOOTH MUSCLE DYSFUNCTION SYNDROME

General Information (adopted from Orphanet):

Synonyms, Signs: MYDRIASIS, CONGENITAL, WITH PATENT DUCTUS ARTERIOSUS, THORACIC AORTIC ANEURYSM, AND VASCULOPATHY
Number of Symptoms 22
OrphanetNr:
OMIM Id: 613834
ICD-10:
UMLs:
MeSH:
MedDRA:
Snomed:

Prevalence, inheritance and age of onset:

Prevalence: No data available.
Inheritance: Autosomal dominant inheritance
[Omim]
Age of onset:

Disease classification (adopted from Orphanet):

Parent Diseases: No data available.

Symptom Information: Sort by abundance 

1
(HPO:0000028) Cryptorchidism 347 / 7739
2
(HPO:0011499) Mydriasis 1 / 7739
3
(HPO:0007866) Retinal infarction 2 / 7739
4
(HPO:0002566) Intestinal malrotation 89 / 7739
5
(HPO:0100770) Hyperperistalsis 1 / 7739
6
(HPO:0001724) Aortic dilatation 24 / 7739
7
(HPO:0011648) Patent ductus arteriosus after birth at term 18 / 7739
8
(HPO:0004942) Aortic aneurysm 10 / 7739
9
(HPO:0002092) Pulmonary hypertension 109 / 7739
10
(HPO:0004944) Cerebral aneurysm 12 / 7739
11
(HPO:0001643) Patent ductus arteriosus 228 / 7739
12
(HPO:0002789) Tachypnea 48 / 7739
13
(HPO:0012727) Thoracic aortic aneurysm 2 / 7739
14
(HPO:0000006) Autosomal dominant inheritance 2518 / 7739
15
(OMIM) Small vessel brain infarcts and aneurysms 1 / 7739
16
(OMIM) Mydriasis, congenital 1 / 7739
17
(OMIM) Periventricular white matter hyperintensities, bilateral 1 / 7739
18
(OMIM) Small vessel retinal infarcts and aneurysms 1 / 7739
19
(OMIM) Lung disease, non-specific 1 / 7739
20
(OMIM) Dilated pulmonary arteries 1 / 7739
21
(OMIM) Hypotonic bladder 1 / 7739
22
(OMIM) Bilateral stenoses of the terminal internal carotid artery 1 / 7739

Associated genes:

ClinVar (via SNiPA)

Gene symbol Variation Clinical significance Reference

Additional Information:

Clinical Description OMIM Milewicz et al. (2010) described 7 unrelated patients ranging in age from 11 to 27 years who had clinical findings suggestive of vascular disease, consistent with previous ACTA2 mutations. However, there was higher penetrance and earlier onset of ...
Molecular genetics OMIM In 7 unrelated patients of northern European descent with multisystemic smooth muscle dysfunction syndrome, Milewicz et al. (2010) identified heterozygosity for a de novo R179H mutation in the ACTA2 gene (102620.0004).