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1 OMIM reference -
2 associated genes
14 signs/symptoms
PROTEIN INTERACTIONS: 1
COMMON SIGNS: 2
3 OMIM references -
3 associated genes
47 signs/symptoms
Large congenital melanocytic nevus
LEOPARD syndrome

MC1R BRAF
NRAS PTPN11
RAF1


INTERACTOME
ASSOCIATIONS

(click on a score value to see the evidence)
NRAS
(0.96)
RAF1



Citations in the biomedical literature:


Large congenital melanocytic nevus
MC1R NRAS
LEOPARD syndrome
BRAF PTPN11 RAF1



Large congenital melanocytic nevus
LEOPARD syndrome

Synonym(s):
- Congenital pigmented nevus
- GMN
- Giant congenital melanocytic nevus
- Giant pigmented hairy nevus
- LCMN

Synonym(s):
- Cardiomyopathic lentiginosis
- Familial multiple lentigines syndrome

Classification (Orphanet):
- Rare genetic disease
- Rare oncologic disease
- Rare skin disease
Classification (Orphanet):
- Rare cardiac disease
- Rare developmental defect during embryogenesis
- Rare eye disease
- Rare genetic disease
- Rare otorhinolaryngologic disease
- Rare skin disease

Classification (ICD10):
- Neoplasms -
Classification (ICD10):
- Congenital malformations, deformations and chromosomal abnormalities -

Epidemiological data:
(no data available)
Epidemiological data:
Class of prevalence: unknown
Average age onset: childhood
Average age of death: -
Type of inheritance: autosomal dominant

External references:
1 OMIM reference -
No MeSH references
External references:
3 OMIM references -
2 MeSH references: C537116 / D044542


COMMON
SIGNS
- Melanoma
- Subcutaneous nodules / lipomas / tumefaction / swelling


Large congenital melanocytic nevus
LEOPARD syndrome

Very frequent
- Abnormal pigmentary skin changes / skin pigmentation anomalies
- Capillary hemangioma / nevus / naevus flammeus / port-wine stain
- Scalp cyst / giant nevus

Frequent
- Hirsutism / hypertrichosis / Increased body hair
- Neoplasms / tumors

Occasional
- Hydrocephaly
- Irregular / patchy skin hypopigmentation
- Pruritus / itching
- Sarcoma
- Seizures / epilepsy / absences / spasms / status epilepticus
- Skin / cutaneous neoplasm / tumor / carcinoma / cancer (excluding melanoma)
- Soft tissue sarcoma / cancer / tumor / liposarcoma / myosarcoma


Very frequent
- Autosomal dominant inheritance
- Cardiac conduction defect / sinoauricular / heart / auriculoventricular / branch block
- Cardiac rhythm disorder / arrhythmia
- Excessive freckling
- Failure to thrive / difficulties for feeding in infancy / growth delay
- Hyperelastic skin / cutaneous hyperlaxity
- Hypertelorism
- Intrauterine growth retardation
- Myelodysplastic syndrome
- Pigmented naevi / naevus pigmentosus / lentigo
- Pulmonary artery stenosis / absence / hypoplasia of the pulmonary branches
- Pulmonary valve atresia / stenosis / narrowing
- Sensorineural deafness / hearing loss
- Structural anomalies of the genital system

Frequent
- Anomalies of ear and hearing
- Atrioventricular canal
- Broad nose / nasal bridge
- Cardiomyopathy / hypertrophic / dilated
- Congenital cardiac anomaly / malformation / cardiopathy
- Face / facial anomalies
- Low set ears / posteriorly rotated ears
- Mitral valve prolapse / incompetence / insufficiency / regurgitation / ring anomaly
- Pectus carinatum
- Pectus excavatum
- Ptosis
- Scapula structural / position anomaly / congenital elevation / Sprengel anomaly
- Sterility / hypofertility
- Undescended / ectopic testes / cryptorchidia / unfixed testes
- Webbed neck / pterygium colli

Occasional
- Abnormal cry / voice / phonation disorder / nasal speech
- Absent / hypotonic / flaccid abdominal wall muscles
- Angor pectoris / myocardial infarction
- Arterial aneurism (excluding aorta)
- Brachycephaly / flat occiput
- Ectopic / horseshoe / fused kidneys
- Endocardium anomalies / fibroelastosis / endocarditis
- Hypospadias / epispadias / bent penis
- Intellectual deficit / mental / psychomotor retardation / learning disability
- Myeloproliferative syndrome / chronic leukemia
- Neuroblastoma
- Rippled skin
- Scoliosis
- Short stature / dwarfism / nanism
- Spina bifida occulta
- Triangular face