raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:273

Steinert myotonic dystrophy

Synonyms: Myotonic dystrophy type 1 · Steinert disease

Type
Disease
Group
Disorder
Inheritance
Autosomal dominant
Age of onset
Adolescent, Adult, Antenatal, Childhood, Infancy, Neonatal
Status
active

A rare genetic multi-system disorder characterized by a wide range of muscle-related manifestations (muscle weakness, myotonia, early onset cataracts (before age 50) and systemic manifestations (cerebral, endocrine, cardiac, gastrointestinal tract, uterus, skin and immunologic involvement) that vary depending on the age of onset. The very wide clinical spectrum ranges from lethal presentations in infancy to mild, late-onset disease.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enSteinert myotonic dystrophyMyotonic dystrophy type 1 · Steinert disease
frDystrophie myotonique de SteinertDystrophie myotonique de type 1 · Maladie de Steinert
deMyotone Dystrophie SteinertCurschmann-Steinert-Syndrom · Myotone Dystrophie Typ 1 · Steinert-Krankheit
esDistrofia miotónica de SteinertDistrofia miotónica tipo 1 · Enfermedad de Steinert
itDistrofia miotonica di SteinertDistrofia miotonica, tipo 1 · Malattia di Steinert
nlMyotone dystrofie van SteinertMyotone dystrofie type 1 · Ziekte van Steinert
ptDistrofia miotónica de SteinertDistrofia miotónica tipo 1 · Doença de Steinert
plDystrofia miotoniczna SteinertaChoroba Steinerta · DM1 · Dystrofia miotoniczna typu 1 · MD1
csMyotonická dystrofie, typ 1MD1 · DM1 · Steinertova myotonická dystrofie · Steinertova nemoc
ukМіотонічна дистрофія ШтейнертаМіотонічна дистрофія типу 1 · Хвороба Штейнерта
zhSteinert强直性肌营养不良营养不良性肌强直1型
trSteinert miyotonik distrofisiDM1 · MD1 · Steinert hastalığı · Miyotonik distrofi tip 1

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM160900Evalidated
ICD-10G71.1NTBTinclusionvalidated
ICD-118C71.0NTBTindexvalidated
MONDO0008056Evalidated
MeSHC538008Evalidated
UMLSC3250443Evalidated
GARD8310Evalidated

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 (7):

Children (5):

4

Genes

0 direct · 5 via subtypes

Orphanet records no gene directly on this code.

Recorded by Orphanet on subtypes of this disorder:

GeneSubtypeAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
DMPKORPHA:589821Congenital-onset Steinert myotonic dystrophyDisease-causing germline mutation(s) inAssessedHGNC:2933ENSG0000010493660537719q13.32DM1 protein kinase31326502[PMID]
DMPKORPHA:589824Childhood-onset Steinert myotonic dystrophyDisease-causing germline mutation(s) inAssessedHGNC:2933ENSG0000010493660537719q13.32DM1 protein kinase31326502[PMID]
DMPKORPHA:589827Juvenile-onset Steinert myotonic dystrophyDisease-causing germline mutation(s) inAssessedHGNC:2933ENSG0000010493660537719q13.32DM1 protein kinase31326502[PMID]
DMPKORPHA:589830Adult-onset Steinert myotonic dystrophyDisease-causing germline mutation(s) inAssessedHGNC:2933ENSG0000010493660537719q13.32DM1 protein kinase31326502[PMID]
DMPKORPHA:589833Late-onset Steinert myotonic dystrophyDisease-causing germline mutation(s) inAssessedHGNC:2933ENSG0000010493660537719q13.32DM1 protein kinase31326502[PMID]
5

Prevalence and incidence

16 records
TypeClassValueAreaQualificationValidationSource
Point prevalence1-9 / 100 0005 / 100 000EuropeValue and classValidated[EXPERT]
Point prevalence1-5 / 10 00012.5 / 100 000WorldwideValue and classNot yet validatedISBN:702021520[OTHER]_21364698[PMID]
Point prevalence1-5 / 10 00010.4 / 100 000United KingdomValue and classValidated19767415[PMID]
Point prevalence1-9 / 100 0007.9 / 100 000IcelandValue and classValidated16264243[PMID]
Point prevalence1-9 / 100 0005.3 / 100 000SerbiaValue and classValidated16713671[PMID]_21364698[PMID]
Point prevalence1-9 / 100 0009.13 / 100 000JapanValue and classValidated1745328[PMID]
Point prevalence1-9 / 1 000 0000.46 / 100 000Taiwan, Province of ChinaValue and classValidated12902623[PMID]_21364698[PMID]
Point prevalence1-5 / 10 00014.3 / 100 000South AfricaValue and classValidated3992413[PMID]
Point prevalence6-9 / 10 00076.3 / 100 000Specific populationValue and classValidated4973215[PMID]
Point prevalence>1 / 1000210.5 / 100 000Specific populationValue and classValidated2924205[PMID]_21364698[PMID]
Annual incidence1-9 / 1 000 0000.2 / 100 000SerbiaValue and classValidated16713671[PMID]
Point prevalence1-9 / 100 0009.31 / 100 000ItalyValue and classValidated11359466[PMID]_21364698[PMID]
Point prevalence1-5 / 10 00011.95 / 100 000IrelandValue and classValidated14960839[PMID]_21364698[PMID]
Point prevalence1-5 / 10 00020 / 100 000Specific populationValue and classValidated12784291[PMID]_21364698[PMID]
Point prevalence1-9 / 100 0005.7 / 100 000Specific populationValue and classValidated12784291[PMID]_21364698[PMID]
Point prevalence1-5 / 10 00018.1 / 100 000CroatiaValue and classValidated9088385[PMID]_21364698[PMID]

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

108 annotations · validated 2020-02-27
HPOTerm (as annotated by Orphanet)Diagnostic
Obligate (100%)
HP:0001324Muscle weakness
Very frequent (99-80%)
HP:0031546Cardiac conduction abnormality
HP:0002460Distal muscle weakness
HP:0100284EMG: myotonic discharges
HP:0001262Excessive daytime somnolence
HP:0003740Myotonia with warm-up phenomenon
HP:0007787Posterior subcapsular cataract
Frequent (79-30%)
HP:0002494Abnormal rapid eye movement sleep
HP:0410011Abnormality of masticatory muscle
HP:0005110Atrial fibrillation
HP:0000708Atypical behavior
HP:0100543Cognitive impairment
HP:0030192Fatigable weakness of bulbar muscles
HP:0012378Fatigue
HP:0009027Foot dorsiflexor weakness
HP:0001288Gait disturbance
HP:0100786Hypersomnia
HP:0031466Impairment in personality functioning
HP:0003326Myalgia
HP:0002870Obstructive sleep apnea
HP:0007010Poor fine motor coordination
HP:0012248Prolonged PR interval
HP:0006677Prolonged QRS complex
HP:0030319Weakness of facial musculature
Occasional (29-5%)
HP:0002500Abnormal cerebral white matter morphology
HP:0040173Abnormality of the tongue muscle
HP:0002926Abnormality of thyroid physiology
HP:0001596Alopecia
HP:0000739Anxiety
HP:0000483Astigmatism
HP:0000729Autistic behavior
HP:0001488Bilateral ptosis
HP:0002120Cerebral cortical atrophy
HP:0001081Cholelithiasis
HP:0002019Constipation
HP:0000144Decreased fertility
HP:0001558Decreased fetal movement
HP:0040171Decreased serum testosterone concentration
HP:0000716Depression
HP:0000819Diabetes mellitus
HP:0009113Diaphragmatic weakness
HP:0002014Diarrhea
HP:0003693Distal amyotrophy
HP:0001260Dysarthria
HP:0002234Early balding
HP:0002910Elevated circulating hepatic transaminase concentration
HP:0000712Emotional lability
HP:0001349Facial diplegia
HP:0002527Falls
HP:0008872Feeding difficulties in infancy
HP:0001263Global developmental delay
HP:0012899Handgrip myotonia
HP:0003124Hypercholesterolemia
HP:0000815Hypergonadotropic hypogonadism
HP:0000842Hyperinsulinemia
HP:0000540Hypermetropia
HP:0010794Impaired visuospatial constructive cognition
HP:0000802Impotence
HP:0000855Insulin resistance
HP:0006889Intellectual disability, borderline
HP:0001256Intellectual disability, mild
HP:0004389Intestinal pseudo-obstruction
HP:0025169Left ventricular systolic dysfunction
HP:0007941Limited extraocular movements
HP:0000026Male hypogonadism
HP:0001268Mental deterioration
HP:0010952Mild fetal ventriculomegaly
HP:0012901Myotonia of the jaw
HP:0012903Myotonia of the upper limb
HP:0011470Nasogastric tube feeding in infancy
HP:0003722Neck flexor weakness
HP:0000467Neck muscle weakness
HP:0001319Neonatal hypotonia
HP:0000602Ophthalmoplegia
HP:0200136Oral-pharyngeal dysphagia
HP:0011999Paranoia
HP:0009830Peripheral neuropathy
HP:0001561Polyhydramnios
HP:0003701Proximal muscle weakness
HP:0007663Reduced visual acuity
HP:0002878Respiratory failure
HP:0004887Respiratory failure requiring assisted ventilation
HP:0002093Respiratory insufficiency
HP:0002747Respiratory insufficiency due to muscle weakness
HP:0000867Secondary hyperparathyroidism
HP:0000736Short attention span
HP:0003202Skeletal muscle atrophy
HP:0001328Specific learning disability
HP:0004755Supraventricular tachycardia
HP:0001762Talipes equinovarus
HP:0010804Tented upper lip vermilion
HP:0000029Testicular atrophy
Very rare (<4-1%)
HP:0000718Aggressive behavior
HP:0000717Autism
HP:0030692Brain neoplasm
HP:0012054Choroidal melanoma
HP:0003003Colon cancer
HP:0000824Decreased response to growth hormone stimulation test
HP:0001644Dilated cardiomyopathy
HP:0012114Endometrial carcinoma
HP:0002540Inability to walk
HP:0008069Neoplasm of the skin
HP:0040198Non-medullary thyroid carcinoma
HP:0008770Obsessive-compulsive trait
HP:0025318Ovarian carcinoma
HP:0003749Pelvic girdle muscle weakness
HP:0003477Peripheral axonal neuropathy
HP:0003547Shoulder girdle muscle weakness

Run the differential on the 7 obligate / very frequent terms

Annotation source: 20301344[PMID]_25037086[PMID]_24882752[PMID]

7

Sources for this card