Congenital lethal myopathy, Compton-North type

General Information (adopted from Orphanet):

Synonyms, Signs:
Number of Symptoms 30
OrphanetNr: 210163
OMIM Id: 612540
ICD-10: G71.2
UMLs:
MeSH:
MedDRA:
Snomed:

Prevalence, inheritance and age of onset:

Prevalence: 4 cases [Orphanet]
Inheritance: Autosomal recessive
[Orphanet]
Age of onset: Neonatal
Infancy
[Orphanet]

Disease classification (adopted from Orphanet):

Parent Diseases: Congenital myopathy
 -Rare genetic disease
 -Rare neurologic disease

Symptom Information: Sort by abundance 

1
(HPO:0000268) Dolichocephaly 144 / 7739
2
(HPO:0000300) Oval face 5 / 7739
3
(HPO:0000316) Hypertelorism 644 / 7739
4
(HPO:0000218) High palate 356 / 7739
5
(HPO:0002304) Akinesia 18 / 7739
6
(HPO:0001284) Areflexia 198 / 7739
7
(HPO:0001166) Arachnodactyly 62 / 7739
8
(HPO:0009473) Joint contracture of the hand 84 / 7739
9
(HPO:0010557) Overlapping fingers 9 / 7739
10
(HPO:0001371) Flexion contracture 220 / 7739
11
(HPO:0012385) Camptodactyly 113 / 7739
12
(HPO:0001989) Fetal akinesia sequence 14 / 7739
13
(HPO:0001558) Decreased fetal movement 74 / 7739
14
(HPO:0001622) Premature birth 100 / 7739
15
(HPO:0001561) Polyhydramnios 191 / 7739
16
(HPO:0011968) Feeding difficulties 240 / 7739
17
(HPO:0002033) Poor suck 37 / 7739
18
(HPO:0001518) Small for gestational age 107 / 7739
19
(HPO:0002747) Respiratory insufficiency due to muscle weakness 48 / 7739
20
(HPO:0001319) Neonatal hypotonia 101 / 7739
21
(HPO:0000007) Autosomal recessive inheritance 2538 / 7739
22
(OMIM) Decreased or patchy amounts of alpha-dystrobrevin and beta-2-syntrophin at the sarcolemma 1 / 7739
23
(OMIM) Skeletal muscle biopsy shows minor variation in fiber size 1 / 7739
24
(OMIM) Reduced muscle mass 4 / 7739
25
(OMIM) Absent Moro reflex 1 / 7739
26
(OMIM) No spontaneous movements 1 / 7739
27
(HPO:0001522) Death in infancy 275 / 7739
28
(OMIM) Normal serum creatine kinase 12 / 7739
29
(OMIM) Disruption of sarcomeres with disorganization of the Z band 1 / 7739
30
(OMIM) Decreased mitochondria 1 / 7739

Associated genes:

ClinVar (via SNiPA)

Gene symbol Variation Clinical significance Reference

Additional Information:

Clinical Description OMIM Jones et al. (2003) identified a highly consanguineous family in which 3 infants presented in the newborn period with severe hypotonia and skeletal, bulbar, and respiratory weakness resulting in death within the first year of life. Serum creatine ...
Molecular genetics OMIM In affected infants from a consanguineous Egyptian family with lethal congenital myopathy, Compton et al. (2008) identified a homozygous mutation in the CNTN1 gene (600016.0001). Compton et al. (2008) proposed that reduced expression of CNTN1 at the neuromuscular ...