autosomal dominant childhood-onset proximal spinal muscular atrophy with contractures
MONDO:0014121Mondo
Findings
No curated finding names autosomal dominant childhood-onset proximal spinal muscular atrophy with contractures yet. Everything below is reference data from Mondo, HPO and GenCC, not evidence about what affects it.
Definition
- Inheritance
- Autosomal dominant inheritance
- Onset and course
- Infantile onset · Juvenile onset · Childhood onset
HPO, annotations 2026-09-02
Features
47 features
What the disease is reported to present with, and how often among people who have it — never how often a feature means the disease. HPO, annotations 2026-09-02.
- Decreased Achilles reflexHPOHP:0009072
- 11 of 11 reported patients
- Lower limb muscle weaknessHPOHP:0007340
- 18 of 18 reported patients
- Proximal lower limb muscle weaknessHPOHP:0008994
- 12 of 12 reported patients
- Waddling gaitHPOHP:0002515
- 12 of 12 reported patients
- Frequent (30% to 79% of cases)
- Scapular wingingHPOHP:0003691
- 11 of 12 reported patients
- Decreased patellar reflexHPOHP:0011808
- 10 of 11 reported patients
- HyperlordosisHPOHP:0003307
- 9 of 12 reported patients
- Occasional (5% to 29% of cases)
- Lower limb amyotrophyHPOHP:0007210
- 13 of 18 reported patients
- Motor delayHPOHP:0001270
- 12 of 18 reported patients
- Occasional (5% to 29% of cases)
- Postexertional symptom exacerbationHPOHP:0030973
- 12 of 18 reported patients
- Congenital foot contraction deformitiesHPOHP:0005853
- Frequent (30% to 79% of cases)
- Distal lower limb amyotrophyHPOHP:0008944
- Frequent (30% to 79% of cases)
Show the remaining 35
- Distal muscle weaknessHPOHP:0002460
- Frequent (30% to 79% of cases)
- Gait disturbanceHPOHP:0001288
- Frequent (30% to 79% of cases)
- Gowers signHPOHP:0003391
- Frequent (30% to 79% of cases)
- Proximal muscle weaknessHPOHP:0003701
- Frequent (30% to 79% of cases)
- Achilles tendon contractureHPOHP:0001771
- 10 of 18 reported patients
- Hyporeflexia of lower limbsHPOHP:0002600
- 9 of 17 reported patients
Genes
1 gene
Germline variants in the gene encoding each protein, as classified by GenCC submitters, each in their own words. Limited, disputed and refuted submissions are listed too.
- BICD2HGNC:17208
- Definitive · G2P · Autosomal dominant · 2025
- Strong · Ambry Genetics · Autosomal dominant · 2018
- Strong · Genomics England PanelApp · Autosomal dominant · 2021
- Strong · Labcorp Genetics (formerly Invitae) · Autosomal dominant · 2020
- Strong · PanelApp Australia · Autosomal recessive · 2025
- Supportive · Orphanet · Autosomal dominant · 2021
Where it sits
Other names
3 names
Resolves to: autosomal dominant childhood-onset proximal spinal muscular atrophy with contractures
- Also called
- Lower extremity-predominant autosomal dominant proximal spinal muscular atrophy with contracturesSMALED2spinal muscular atrophy, lower extremity-predominant, 2A, autosomal dominant