raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:300605

Juvenile amyotrophic lateral sclerosis

Synonyms: JALS · Juvenile Charcot disease · Juvenile Lou Gehrig disease

Type
Disease
Group
Disorder
Inheritance
Autosomal dominant, Autosomal recessive, Multigenic/multifactorial, X-linked dominant, X-linked recessive
Age of onset
Childhood
Status
active

A rare motor neuron disease characterized by onset before 25 years of age of progressive upper and/or lower motor neuron degeneration, leading to bulbar and limb motor impairment, with marked clinical and genetic heterogeneity.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enJuvenile amyotrophic lateral sclerosisJALS · Juvenile Charcot disease · Juvenile Lou Gehrig disease
frSclérose latérale amyotrophique juvénileJALS · Maladie de Charcot juvénile · Maladie de Lou Gehrig juvénile · SLAJ
deAmyotrophe Lateralsklerose, juvenileCharcot-Krankheit, juvenile · JALS · Lou-Gehrig-Krankheit, juvenile
esEsclerosis lateral amiotrófica juvenilEnfermedad de Charcot juvenil · Enfermedad de Lou-Gehrig juvenil · JALS
itSclerosi laterale amiotrofica giovanileJALS · Malattia di Charcot giovanile · Malattia di Lou-Gehrig giovanile
nlJuveniele amyotrofische laterale scleroseJuveniele amyotrofe laterale sclerose · Juveniele ziekte van Charcot · Juveniele ziekte van Lou Gehrig · JALS
ptEsclerose lateral amiotrófica juvenil
plMłodzieńcze stwardnienie zanikowe boczneJALS · Młodzieńcza choroba Charcota · Młodzieńcza choroba Lou Gehriga
csJuvenilní amyotrofická laterální sklerózaJALS · Juvenilní Charcotova nemoc · Juvenilní Lou Gehrigova nemoc
ukЮвенільний бічний аміотрофічний склерозJALS · Ювенільна хвороба Шарко · Ювенільна хвороба Лу Геріга
zh青少年肌萎缩侧索硬化症青少年Lou Gehrig病
trJüvenil amyotrofik lateral sklerozJALS · Jüvenil Charcot hastalığı · Jüvenil Lou Gehrig hastalığı

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM205100BTNTvalidated
OMIM300857NTBTvalidated
OMIM602099BTNTvalidated
OMIM614373BTNTvalidated
OMIM620285BTNTvalidated
ICD-10G12.2NTBTattributedvalidated
MONDO0017593Evalidated
UMLSC3468114Evalidated
GARD11901Evalidated

E exact · NTBT this ORPHAcode is narrower than the target · BTNT broader than the target · ND not decided.

3

Classification

Preferential parent (Orphanet linearisation):

Parents in the classifications (1):

No children.

4

Genes

14 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
ALS2Disease-causing germline mutation(s) inAssessedHGNC:443ENSG000000033936063522q33.1alsin Rho guanine nucleotide exchange factor ALS223282280[PMID]
ATP13A2Disease-causing germline mutation(s) inAssessedHGNC:30213ENSG000001593636105131p36.13ATPase cation transporting 13A230992063[PMID]
ERLIN1Disease-causing germline mutation(s) inAssessedHGNC:16947ENSG0000010756661160410q24.31ER lipid raft associated 129453415[PMID]
FUSDisease-causing germline mutation(s) inAssessedHGNC:4010ENSG0000008928013707016p11.2FUS RNA binding protein20579074[PMID]_23046859[PMID]_22248478[PMID]
GNEDisease-causing germline mutation(s) inAssessedHGNC:23657ENSG000001599216038249p13.3glucosamine (UDP-N-acetyl)-2-epimerase/N-acetylmannosamine kinase29086072[PMID]
SIGMAR1Disease-causing germline mutation(s) inAssessedHGNC:8157ENSG000001479556019789p13.3sigma non-opioid intracellular receptor 121842496[PMID]_24085347[PMID]
SORDDisease-causing germline mutation(s) inAssessedHGNC:11184ENSG0000014026318250015q21.1sorbitol dehydrogenase34751056[PMID]
SPG11Disease-causing germline mutation(s) inAssessedHGNC:11226ENSG0000010413361084415q21.1SPG11 vesicle trafficking associated, spatacsin24085347[PMID]_22154821[PMID]_20110243[PMID]
SPTLC1Disease-causing germline mutation(s) inAssessedHGNC:11277ENSG000000900546057129q22.31serine palmitoyltransferase long chain base subunit 134459874[PMID]
SPTLC2Disease-causing germline mutation(s) inAssessedHGNC:11278ENSG0000010059660571314q24.3serine palmitoyltransferase long chain base subunit 238041679[PMID]_38041684[PMID]
SYNE1Disease-causing germline mutation(s) inAssessedHGNC:17089ENSG000001310186084416q25.2spectrin repeat containing nuclear envelope protein 132870032[PMID]_15106121[PMID]_31957062[PMID]
TARDBPDisease-causing germline mutation(s) inAssessedHGNC:11571ENSG000001209486050781p36.22TAR DNA binding protein33159016[PMID]_36011394[PMID]
TRMT2BDisease-causing germline mutation(s) inAssessedHGNC:25748ENSG00000188917301128Xq22.1tRNA methyltransferase 2B37874476[PMID]
UBQLN2Disease-causing germline mutation(s) inAssessedHGNC:12509ENSG00000188021300264Xp11.21ubiquilin 221857683[PMID]
5

Prevalence and incidence

1 record
TypeClassValueAreaQualificationValidationSource
Point prevalence<1 / 1 000 000—EuropeClass onlyValidatedORPHANET

Value is Orphadata's ValMoy: the mean estimate per 100 000 for prevalence and incidence, the number of cases or families for case reports.

6

HPO phenotypes

46 annotations · validated 2020-10-16
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0007354Amyotrophic lateral sclerosis
HP:0003693Distal amyotrophy
HP:0002061Lower limb spasticity
HP:0001324Muscle weakness
HP:0003202Skeletal muscle atrophy
HP:0006986Upper limb spasticity
Frequent (79-30%)
HP:0002167Abnormality of speech or vocalization
HP:0031960Arm dystonia
HP:0001348Brisk reflexes
HP:0002483Bulbar signs
HP:0003429CNS hypomyelination
HP:0100360Contractures of the joints of the upper limbs
HP:0031936Delayed ability to walk
HP:0002460Distal muscle weakness
HP:0001332Dystonia
HP:0001288Gait disturbance
HP:0001276Hypertonia
HP:0002540Inability to walk
HP:0005750Lower-limb joint contracture
HP:0100295Muscle fiber atrophy
HP:0001264Spastic diplegia
Occasional (29-5%)
HP:0001317Abnormal cerebellum morphology
HP:0002425Anarthria
HP:0001251Ataxia
HP:0000708Atypical behavior
HP:0002530Axial dystonia
HP:0004326Cachexia
HP:0002072Chorea
HP:0002169Clonus
HP:0100543Cognitive impairment
HP:0002015Dysphagia
HP:0011471Gastrostomy tube feeding in infancy
HP:0001263Global developmental delay
HP:0002599Head titubation
HP:0000252Microcephaly
HP:0003722Neck flexor weakness
HP:0000639Nystagmus
HP:0002179Opisthotonus
HP:0012048Oromandibular dystonia
HP:0001300Parkinsonism
HP:0003701Proximal muscle weakness
HP:0002544Retrocollis
HP:0002650Scoliosis
HP:0000605Supranuclear gaze palsy
HP:0030051Tip-toe gait
HP:0000020Urinary incontinence

Run the differential on the 6 obligate / very frequent terms

Annotation source: 24562058[PMID]_20301623[PMID]_31682085[PMID]

7

Sources for this card