MCID: SPN385
MIFTS: 26

Spinal Muscular Atrophy, Lower Extremity-Predominant, 1, Autosomal Dominant

Categories: Genetic diseases, Rare diseases, Neuronal diseases, Muscle diseases

Aliases & Classifications for Spinal Muscular Atrophy, Lower Extremity-Predominant, 1,...

MalaCards integrated aliases for Spinal Muscular Atrophy, Lower Extremity-Predominant, 1, Autosomal Dominant:

Name: Spinal Muscular Atrophy, Lower Extremity-Predominant, 1, Autosomal Dominant 57 53
Smaled1 57 53 59 75
Lower Extremity-Predominant Autosomal Dominant Proximal Spinal Muscular Atrophy Without Contractures 53 59
Autosomal Dominant Childhood-Onset Proximal Spinal Muscular Atrophy Without Contractures 53 59
Spinal Muscular Atrophy, Lower Extremity Predominant 1, Autosomal Dominant 29 6
Spinal Muscular Atrophy, Childhood, Proximal, Autosomal Dominant 57 73
Spinal Muscular Atrophy, Lower Extremity-Predominant 1, Ad 57 53
Sma-Led 57 75
Autosomal Dominant Spinal Muscular Atrophy with Lower Extremity Predominance 53
Spinal Muscular Atrophy, Lower Extremity-Predominant 1, Autosomal Dominant 75
Autosomal Dominant Spinal Muscular Atrophy, Lower Extremity-Predominant 1 53
Autosomal Dominant Lower Extremity-Predominant Spinal Muscular Atrophy-1 53
Spinal Muscular Atrophy, Lower Extremity-Predominant 1, Dominant 53
Spinal Muscular Atrophy, Juvenile, Proximal, Autosomal Dominant 57
Autosomal Dominant Childhood Proximal Spinal Muscular Atrophy 75
Autosomal Dominant Juvenile Proximal Spinal Muscular Atrophy 75
Kugelberg-Welander Syndrome, Autosomal Dominant 57
Autosomal Dominant Kugelberg-Welander Syndrome 75
Sma-Led1 53

Characteristics:

Orphanet epidemiological data:

59
autosomal dominant childhood-onset proximal spinal muscular atrophy without contractures
Inheritance: Autosomal dominant; Age of onset: Childhood; Age of death: adult;

OMIM:

57
Inheritance:
autosomal dominant

Miscellaneous:
onset in early childhood
non-progressive or very slowly progressive


HPO:

32
spinal muscular atrophy, lower extremity-predominant, 1, autosomal dominant:
Onset and clinical course childhood onset slow progression
Inheritance autosomal dominant inheritance


Classifications:

Orphanet: 59  
Rare neurological diseases


External Ids:

OMIM 57 158600
Orphanet 59 ORPHA209341
UMLS via Orphanet 74 C1834690
ICD10 via Orphanet 34 G12.1
MedGen 42 C1834690
MeSH 44 D014897
UMLS 73 C1834690

Summaries for Spinal Muscular Atrophy, Lower Extremity-Predominant, 1,...

OMIM : 57 Spinal muscular atrophy (SMA) is a hereditary neuromuscular disorder characterized by degeneration of spinal cord motor neurons resulting in muscle weakness. SMALED shows autosomal dominant inheritance with muscle weakness predominantly affecting the proximal lower extremities (Harms et al., 2010). The most common form of SMA (see, e.g., SMA1, 253300) shows autosomal recessive inheritance and is due to mutation in the SMN1 gene (600354) on chromosome 5q. (158600)

MalaCards based summary : Spinal Muscular Atrophy, Lower Extremity-Predominant, 1, Autosomal Dominant, also known as smaled1, is related to spinal muscular atrophy with lower extremity predominance and spinal muscular atrophy, lower extremity-predominant, 2, autosomal dominant, and has symptoms including waddling gait An important gene associated with Spinal Muscular Atrophy, Lower Extremity-Predominant, 1, Autosomal Dominant is DYNC1H1 (Dynein Cytoplasmic 1 Heavy Chain 1). Affiliated tissues include spinal cord, and related phenotypes are global developmental delay and abnormality of the foot

UniProtKB/Swiss-Prot : 75 Spinal muscular atrophy, lower extremity-predominant 1, autosomal dominant: A form of spinal muscular atrophy, a neuromuscular disorder characterized by degeneration of the anterior horn cells of the spinal cord, leading to symmetrical muscle weakness and atrophy. SMALED1 is characterized by muscle weakness predominantly affecting the proximal lower extremities.

Related Diseases for Spinal Muscular Atrophy, Lower Extremity-Predominant, 1,...

Diseases in the Spinal Muscular Atrophy, Lower Extremity-Predominant, 1, Autosomal Dominant family:

Spinal Muscular Atrophy, Lower Extremity-Predominant, 2, Autosomal Dominant

Diseases related to Spinal Muscular Atrophy, Lower Extremity-Predominant, 1, Autosomal Dominant via text searches within MalaCards or GeneCards Suite gene sharing:

# Related Disease Score Top Affiliating Genes
1 spinal muscular atrophy with lower extremity predominance 11.9
2 spinal muscular atrophy, lower extremity-predominant, 2, autosomal dominant 10.9
3 spinal muscular atrophy 10.2
4 muscular atrophy 10.2

Symptoms & Phenotypes for Spinal Muscular Atrophy, Lower Extremity-Predominant, 1,...

Symptoms via clinical synopsis from OMIM:

57
Neurologic Central Nervous System:
waddling gait
delayed walking
difficulty running and climbing stairs
muscle weakness, symmetric, proximal due to motor neuronopathy
cognitive delay, mild (1 patient)

Muscle Soft Tissue:
muscle weakness, symmetric, proximal, lower limbs
muscle atrophy, lower limbs
hip abductor weakness and atrophy
type 2 muscle fiber predominance
emg shows chronic denervation

Skeletal Feet:
foot deformities (variable)

Neurologic Peripheral Nervous System:
decreased patellar reflexes
no sensory impairment


Clinical features from OMIM:

158600

Human phenotypes related to Spinal Muscular Atrophy, Lower Extremity-Predominant, 1, Autosomal Dominant:

32 (show all 11)
# Description HPO Frequency HPO Source Accession
1 global developmental delay 32 occasional (7.5%) HP:0001263
2 abnormality of the foot 32 HP:0001760
3 proximal muscle weakness in lower limbs 32 HP:0008994
4 proximal lower limb amyotrophy 32 HP:0008956
5 sensory impairment 32 HP:0003474
6 waddling gait 32 HP:0002515
7 difficulty running 32 HP:0009046
8 type 2 muscle fiber predominance 32 HP:0010602
9 spinal muscular atrophy 32 HP:0007269
10 emg 32 HP:0003445
11 decreased patellar reflex 32 HP:0011808

UMLS symptoms related to Spinal Muscular Atrophy, Lower Extremity-Predominant, 1, Autosomal Dominant:


waddling gait

Drugs & Therapeutics for Spinal Muscular Atrophy, Lower Extremity-Predominant, 1,...

Search Clinical Trials , NIH Clinical Center for Spinal Muscular Atrophy, Lower Extremity-Predominant, 1, Autosomal Dominant

Genetic Tests for Spinal Muscular Atrophy, Lower Extremity-Predominant, 1,...

Genetic tests related to Spinal Muscular Atrophy, Lower Extremity-Predominant, 1, Autosomal Dominant:

# Genetic test Affiliating Genes
1 Spinal Muscular Atrophy, Lower Extremity Predominant 1, Autosomal Dominant 29 DYNC1H1

Anatomical Context for Spinal Muscular Atrophy, Lower Extremity-Predominant, 1,...

MalaCards organs/tissues related to Spinal Muscular Atrophy, Lower Extremity-Predominant, 1, Autosomal Dominant:

41
Spinal Cord

Publications for Spinal Muscular Atrophy, Lower Extremity-Predominant, 1,...

Articles related to Spinal Muscular Atrophy, Lower Extremity-Predominant, 1, Autosomal Dominant:

# Title Authors Year
1
Autosomal dominant spinal muscular atrophy with lower extremity predominance: A recognizable phenotype of BICD2 mutations. ( 26998597 )
2016

Variations for Spinal Muscular Atrophy, Lower Extremity-Predominant, 1,...

UniProtKB/Swiss-Prot genetic disease variations for Spinal Muscular Atrophy, Lower Extremity-Predominant, 1, Autosomal Dominant:

75
# Symbol AA change Variation ID SNP ID
1 DYNC1H1 p.His306Arg VAR_066651 rs387906738
2 DYNC1H1 p.Ile584Leu VAR_067820 rs387906741
3 DYNC1H1 p.Lys671Glu VAR_067821 rs387906742
4 DYNC1H1 p.Tyr970Cys VAR_067822 rs387906743
5 DYNC1H1 p.Arg264Leu VAR_073156 rs713993043
6 DYNC1H1 p.Arg598Cys VAR_073157 rs587780564
7 DYNC1H1 p.Pro776Leu VAR_078241 rs1057518083Spinal
8 DYNC1H1 p.Gly1132Glu VAR_078242

ClinVar genetic disease variations for Spinal Muscular Atrophy, Lower Extremity-Predominant, 1, Autosomal Dominant:

6
(show all 16)
# Gene Variation Type Significance SNP ID Assembly Location
1 DYNC1H1 NM_001376.4(DYNC1H1): c.917A> G (p.His306Arg) single nucleotide variant Pathogenic rs387906738 GRCh37 Chromosome 14, 102446843: 102446843
2 DYNC1H1 NM_001376.4(DYNC1H1): c.917A> G (p.His306Arg) single nucleotide variant Pathogenic rs387906738 GRCh38 Chromosome 14, 101980506: 101980506
3 DYNC1H1 NM_001376.4(DYNC1H1): c.1750A> C (p.Ile584Leu) single nucleotide variant Pathogenic rs387906741 GRCh37 Chromosome 14, 102452312: 102452312
4 DYNC1H1 NM_001376.4(DYNC1H1): c.1750A> C (p.Ile584Leu) single nucleotide variant Pathogenic rs387906741 GRCh38 Chromosome 14, 101985975: 101985975
5 DYNC1H1 NM_001376.4(DYNC1H1): c.2011A> G (p.Lys671Glu) single nucleotide variant Pathogenic rs387906742 GRCh37 Chromosome 14, 102452573: 102452573
6 DYNC1H1 NM_001376.4(DYNC1H1): c.2011A> G (p.Lys671Glu) single nucleotide variant Pathogenic rs387906742 GRCh38 Chromosome 14, 101986236: 101986236
7 DYNC1H1 NM_001376.4(DYNC1H1): c.2909A> G (p.Tyr970Cys) single nucleotide variant Pathogenic rs387906743 GRCh37 Chromosome 14, 102457904: 102457904
8 DYNC1H1 NM_001376.4(DYNC1H1): c.2909A> G (p.Tyr970Cys) single nucleotide variant Pathogenic rs387906743 GRCh38 Chromosome 14, 101991567: 101991567
9 DYNC1H1 NM_001376.4(DYNC1H1): c.1792C> T (p.Arg598Cys) single nucleotide variant Pathogenic/Likely pathogenic rs587780564 GRCh37 Chromosome 14, 102452354: 102452354
10 DYNC1H1 NM_001376.4(DYNC1H1): c.1792C> T (p.Arg598Cys) single nucleotide variant Pathogenic/Likely pathogenic rs587780564 GRCh38 Chromosome 14, 101986017: 101986017
11 DYNC1H1 NM_001376.4(DYNC1H1): c.3603G> T (p.Arg1201Ser) single nucleotide variant Pathogenic rs727505393 GRCh37 Chromosome 14, 102463410: 102463410
12 DYNC1H1 NM_001376.4(DYNC1H1): c.3603G> T (p.Arg1201Ser) single nucleotide variant Pathogenic rs727505393 GRCh38 Chromosome 14, 101997073: 101997073
13 DYNC1H1 NM_001376.4(DYNC1H1): c.2327C> T (p.Pro776Leu) single nucleotide variant Conflicting interpretations of pathogenicity rs1057518083 GRCh37 Chromosome 14, 102452889: 102452889
14 DYNC1H1 NM_001376.4(DYNC1H1): c.2327C> T (p.Pro776Leu) single nucleotide variant Conflicting interpretations of pathogenicity rs1057518083 GRCh38 Chromosome 14, 101986552: 101986552
15 DYNC1H1 NM_001376.4(DYNC1H1): c.12332A> G (p.Lys4111Arg) single nucleotide variant Uncertain significance rs1060499574 GRCh38 Chromosome 14, 102042440: 102042440
16 DYNC1H1 NM_001376.4(DYNC1H1): c.12332A> G (p.Lys4111Arg) single nucleotide variant Uncertain significance rs1060499574 GRCh37 Chromosome 14, 102508777: 102508777

Expression for Spinal Muscular Atrophy, Lower Extremity-Predominant, 1,...

Search GEO for disease gene expression data for Spinal Muscular Atrophy, Lower Extremity-Predominant, 1, Autosomal Dominant.

Pathways for Spinal Muscular Atrophy, Lower Extremity-Predominant, 1,...

GO Terms for Spinal Muscular Atrophy, Lower Extremity-Predominant, 1,...

Sources for Spinal Muscular Atrophy, Lower Extremity-Predominant, 1,...

3 CDC
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9 Cosmic
10 dbSNP
11 DGIdb
17 ExPASy
19 FMA
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32 HPO
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58 OMIM via Orphanet
62 PubMed
64 QIAGEN
69 SNOMED-CT via HPO
70 SNOMED-CT via Orphanet
71 TGDB
72 Tocris
73 UMLS
74 UMLS via Orphanet
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