900000000000508004: Great Britain English language reference set (foundation metadata concept)

SNOMED CT Concept\SNOMED CT Model Component\Foundation metadata concept (foundation metadata concept)\Reference set\Language type reference set (foundation metadata concept)\English [International Organization for Standardization 639-1 code en] language reference set (foundation metadata concept)\GB English

Status: current, Not sufficiently defined by necessary conditions definition status (core metadata concept). Date: 31-Jan 2002. Module: SNOMED CT model component module (core metadata concept)

Descriptions:

Expanded Value Set

Outbound Relationships	Type	Target	Active	Characteristic	Refinability	Group	Values
GB English	Is a	English [International Organization for Standardization 639-1 code en] language reference set (foundation metadata concept)	true	Inferred relationship	Some

Members	acceptabilityId
A rare genetic brachydactyly syndrome with the association of brachydactyly type E and hypertension (due to vascular or neurovascular anomalies) as well as the additional features of short stature and low birth weight (compared to non-affected family members), stocky build and a round face. The onset of hypertension is often in childhood and if untreated, most patients will have had a stroke by the age of 50.	Preferred (foundation metadata concept)
A rare genetic capillary malformation characterised by dark red to purple birthmarks which manifest as flat, sharply circumscribed cutaneous lesions, typically situated in the head and neck region, in various members of a single family. The lesions grow proportionally with the individual, change in colour and often thicken with age. There is evidence that congenital capillary malformations can be caused by somatic mosaic mutation in the GNAQ gene on chromosome 9q21.	Preferred (foundation metadata concept)
A rare genetic cardiac disease with characteristics of variably expressed atrial tachyarrhythmia (such as atrial flutter, paroxysmal or chronic atrial fibrillation, ectopic atrial tachycardia, or multifocal atrial tachycardia), infra-Hisian conduction system disease and vulnerability to dilated cardiomyopathy. The age of onset ranges between childhood and adulthood.	Preferred (foundation metadata concept)
A rare genetic cardiac malformation with characteristics of progressive myxomatous degeneration predominantly of the mitral valve (but not uncommonly with multivalvular involvement), presenting as valve thickening and dysfunction with variable stenosis, prolapse, and/or regurgitation and potentially resulting in lethal heart failure. Hyperextensible skin and joint hypermobility have been reported in some patients. Hemizygous males display a more severe phenotype than heterozygous females.	Preferred (foundation metadata concept)
A rare genetic central nervous system malformation characterised by dysplasia of the superior cerebellum (especially the vermis), brainstem asymmetry, dysplasia of the basal ganglia and cortical irregularities with asymmetric abnormalities in gyral size and orientation, as well as varying sulcal depth, but without lissencephaly, pachygyria, or polymicrogyria. Clinically, patients present global developmental delay with motor development usually being more affected that speech. Variable features are abnormal eye movements including oculomotor apraxia, strabismus, seizures and behavioural problems.	Preferred (foundation metadata concept)
A rare genetic central nervous system malformation syndrome characterised by bilateral congenital cataracts and severe haemorrhagic destruction of the brain parenchyma with associated massive cystic degeneration, enlarged ventricles and subependymal calcification. Patients typically present generalised spasticity, increased deep tendon reflexes and seizures. Hepatomegaly and renal anomalies have also been reported. Caused by homozygous mutation in the JAM3 gene on chromosome 11q25.	Preferred (foundation metadata concept)
A rare genetic central nervous system malformation syndrome with characteristics of congenital progressive microcephaly, neonatal to infancy-onset of severe intractable seizures and diffuse cerebral cortex and cerebellar vermis atrophy with mild cerebellar hemisphere atrophy associated with profound global developmental delay. Hypotonia or hypertonia with brisk reflexes, variable dysmorphic facial features, ophthalmological signs (cortical visual impairment, nystagmus, eye deviation) and episodes of sudden extreme agitation caused by severe illness may also be associated. Caused by compound heterozygous mutation in the QARS gene on chromosome 3p21.	Preferred (foundation metadata concept)
A rare genetic central nervous system malformation syndrome with characteristics of early-onset progressive severe cerebellar ataxia associated with progressive moderate to severe intellectual disability, global developmental delay, progressively coarsening facial features, relative macrocephaly and absence of seizures. Sensorineural hearing loss may be associated. Neuroimaging reveals cerebellar atrophy/hypoplasia. There is evidence the disease is caused by homozygous mutation in the SNX14 gene on chromosome 6q14.	Preferred (foundation metadata concept)
A rare genetic central nervous system malformation syndrome with characteristics of marked prenatal-onset microcephaly, severe motor delay with hypotonia, bilateral polymicrogyria, corpus callosum agenesis, ventricular dilation, small cerebellum and early lethality.	Preferred (foundation metadata concept)
A rare genetic cerebral malformation characterised by the presence of cortical smoothening with loss of secondary and tertiary gyri, associated with an excessive number of small, irregular gyri with increased cortical thickness, located in the occipital lobes. Patients usually present with seizures (including myoclonic-astatic, absence, atypical absence, vision loss, myoclonic-atonic, generalised tonic-clonic) and variable (absent to moderate) developmental and/or intellectual delay. There is evidence the disease is caused by homozygous or compound heterozygous mutations in the LAMC3 gene on chromosome 9q34.	Preferred (foundation metadata concept)
A rare genetic cerebral malformation with characteristics of an intracerebral fluid-filled cyst or cavity with or without communication between the ventricle and subarachnoid space. Clinical manifestations depend on location and severity and may include hemiparesis, seizures, intellectual disability, and dystonia. Porencephaly may manifest before or after birth. The cysts or cavities can be located anywhere within the cerebral parenchyma and are typically lined by smooth walls and surrounded by an atrophic cortex. Mutations in the COL4A1 (13q34) and COL4A2 (13q34) genes have been identified in familial porencephaly and de novo cases. The pattern of inheritance for familial porencephaly is autosomal dominant.	Preferred (foundation metadata concept)
A rare genetic cerebral small vessel disease characterised by leucoencephalopathy and cerebral calcification and cysts due to diffuse cerebral microangiopathy resulting in microcystic and macrocystic parenchymal degeneration. The condition can present at any age from early childhood to late adulthood and manifests as a progressive cerebral degeneration. Symptoms are variable but restricted to the central nervous system and include among others slowing of cognitive performance, seizures and movement disorder with a combination of pyramidal, extrapyramidal and cerebellar features.	Preferred (foundation metadata concept)
A rare genetic cerebral small vessel disease characterised by recurrent ischaemic strokes, often with a predilection for the pons, with typical onset in the fourth or fifth decade of life. Patients present progressive cognitive and motor impairment with pyramidal, bulbar and cerebellar symptoms among others. Brain imaging shows multiple lacunar infarcts, typically with involvement of the pons, as well as variable leucoencephalopathy of the cerebral hemispheres.	Preferred (foundation metadata concept)
A rare genetic cerebral small vessel disease characterised by subcortical ischaemic events associated with cognitive decline and gait disturbance with an age of onset typically in the sixth or seventh decade of life. Imaging reveals white matter hyperintensities, status cribrosum, lacunar infarcts and sometimes microbleeds. Extra-neurological manifestations are absent.	Preferred (foundation metadata concept)
A rare genetic cerebral small vessel disease with characteristics of adult-onset primary microangiopathy with severe atherosclerosis of arterioles and secondary leucoencephalopathy. Patients may present with migraine, transient ischaemic attacks, stroke with central facial palsy, cognitive dysfunction with impaired concentration, dementia, depression, movement disorder, vertigo, dysphagia, dysarthria, impaired REM sleep, and therapy-resistant hypertension, among others. Brain MRI typically shows a leucoencephalopathy that is disproportionately severe and extensive compared to the clinical disease.	Preferred (foundation metadata concept)
A rare genetic cerebral small vessel disease with isolated marked tortuosity of second order and third order retinal arteries with normal first order arteries and venous system, typically located in the macular and peripapillary area and developing during childhood or early adulthood. The disease may be asymptomatic, although most patients present variable degrees of transient vision loss due to retinal haemorrhage following physical exertion or minor trauma.	Preferred (foundation metadata concept)
A rare genetic chromosomal anomaly syndrome resulting from a partial deletion of the long arm of chromosome 21. The disease has characteristics of pre and post-natal growth delay, short stature, intellectual disability, developmental delay with severe language impairment, thrombocytopenia and craniofacial dysmorphism which may include microcephaly, downslanted palpebral fissures, low-set ears, broad nose, thin upper vermillion and downturned corners of the mouth. Brain MRI abnormalities (such as agenesis of the corpus callosum) behavioural problems and seizures may be associated.	Preferred (foundation metadata concept)
A rare genetic chromosomal anomaly syndrome resulting from partial duplication of the long arm of chromosome 2 with characteristics of congenital pendular nystagmus associated with bilateral cutaneous syndactyly between the third and fourth fingers.	Preferred (foundation metadata concept)
A rare genetic chronic primary adrenal insufficiency disorder due to partial loss-of-function CYP11A1 mutations. The disease has characteristics of early-onset adrenal insufficiency without associated abnormal external male genitalia. Patients present with signs of adrenal crisis, including electrolyte abnormalities, severe weakness, recurrent vomiting and seizures. Ultrasound reveals absent (or very small) adrenal glands.	Preferred (foundation metadata concept)
A rare genetic chronic skeletal disorder with characteristics of peripheral osteolysis, interphalangeal joint erosions, subcutaneous fibrocollagenous nodules, facial dysmorphism, and a wide range of associated manifestations. The prevalence and incidence of MONA are not known. Fewer than 50 cases have been reported worldwide. MONA spectrum disorders are caused by mutations in the MMP2 gene (16q13-q21) or MMP14 gene (14q11-q12). Follows an autosomal recessive pattern of inheritance. Many cases are reported in children from consanguineous unions.	Preferred (foundation metadata concept)
A rare genetic coagulation disorder characterised by easy bruising (without haemarthrosis or spontaneous haematomas), epistaxis, menorrhagia, and excessive bleeding after minor trauma and surgical procedures. Patients present a prolonged prothrombin time and/or activated partial thromboplastin time, normal levels of all coagulation factors and normal protein C activity.	Preferred (foundation metadata concept)
A rare genetic coagulation disorder characterised by marked bleeding tendency and posttraumatic bleeding with easy bruising, soft tissue and muscle bleeding, haemarthroses and menorrhagia. Caused by an increase of soluble thrombomodulin in plasma with subsequent protein C activation and reduction of thrombin generation within a potential thrombus. Abnormal laboratory findings include markedly elevated plasma thrombomodulin, reduced prothrombin consumption and decreased thrombin generation.	Preferred (foundation metadata concept)
A rare genetic coagulation disorder characterised by the usually incidental laboratory finding of a prolonged activated partial thromboplastin time (aPTT) but normal prothrombin time, due to a deficiency of normal prekallikrein or the presence of nonfunctional prekallikrein. Most patients remain clinically asymptomatic, although an association with cardiovascular conditions (hypertension, myocardial infarction, other coronary artery diseases, and ischaemic strokes) and venous thrombosis, as well as rare cases with increased bleeding tendency have been reported.	Preferred (foundation metadata concept)
A rare genetic coagulation disorder with characteristics of a tendency to develop thrombosis resulting from decreased histidine-rich glycoprotein (HRG) plasma levels. Manifestations are variable depending on location of thrombosis, but may include headaches, diplopia, progressive pain, limb swelling, itching or ulceration, and brownish skin discolouration, among others. There is evidence the disease is caused by heterozygous mutation in the HRG gene on chromosome 3q27.	Preferred (foundation metadata concept)
A rare genetic coagulation disorder with characteristics of mild to moderate bleeding tendency due to impaired platelet activation and aggregation in response to collagen, or impaired platelet-vessel wall interaction, resulting from a collagen receptor defect. Patients manifest with ecchymoses, epistaxis, menorrhagia, and/or post-traumatic and post-surgery bleeding complications. Laboratory analysis reveals prolonged bleeding time and occasionally mild thrombocytopenia.	Preferred (foundation metadata concept)
A rare genetic cobblestone lissencephaly disease with characteristics of the presence of a constellation of brain malformations, including cortical gyral and sulcus anomalies, white matter signal abnormalities, cerebellar dysplasia and brainstem hypoplasia, existing alone or in conjunction with minimal muscular and ocular abnormalities, typically manifesting with severe developmental delay, increased head circumference, hydrocephalus and seizures. There is evidence the disease is caused by homozygous or compound heterozygous mutation in the LAMB1 gene on chromosome 7q31.	Preferred (foundation metadata concept)
A rare genetic coenzyme Q10 deficiency with characteristics of sensorineural deafness and severe progressive nephrotic syndrome not responding to steroid treatment. Clinical manifestations include early onset proteinuria, hypoalbuminaemia and oedema, leading to end-stage renal disease. Renal biopsy reveals focal segmental glomerulosclerosis and diffuse mesangial sclerosis. Rarely seizures, ataxia and dysmorphic features have been described.	Preferred (foundation metadata concept)
A rare genetic combined T and B cell immunodeficiency characterised by T- and B-cell lymphopenia, hypergammaglobulinaemia and intermittent neutropenia. It presents with recurrent opportunistic viral, bacterial and fungal infections involving skin (cutaneous papillomatosis, molluscum contagiosum, skin abscesses, mucocutaneous candidiasis), upper and lower respiratory tract or septicaemia. Other clinical features include autoimmune manifestations (autoimmune haemolytic anaemia) and congenital heart defects (atrial septal defects, patent foramen ovale, mitral, tricuspid and pulmonary valve insufficiency). Caused by homozygous mutation in the STK4 gene on chromosome 20q13.	Preferred (foundation metadata concept)
A rare genetic combined T and B cell immunodeficiency characterised by life-threatening infections due to disrupted transferrin receptor 1 endocytosis, resulting in defective cellular iron transport and impaired T and B cell function. Patients present with early-onset chronic diarrhoea, severe recurrent infections and failure to thrive. Laboratory studies reveal hypo or agammaglobulinaemia, normal lymphocyte counts but decreased numbers of memory B cells, intermittent neutropenia and thrombocytopenia, and mild anaemia (resistant to iron supplementation) with low mean corpuscular volume.	Preferred (foundation metadata concept)
A rare genetic complex cerebral cortical malformation characterised by generalised or focal dysgyria (also named polymicrogyria-like cortical dysplasia) or alternatively by microlissencephaly with dysmorphic basal ganglia and dysgenesis of the corpus callosum. Clinical manifestations are variable and include microcephaly, seizures, hypotonia, developmental delay, severe psychomotor delay, ataxia, spastic diplegia or tetraplegia, and ocular abnormalities (strabismus, ptosis or optic atrophy).	Preferred (foundation metadata concept)
A rare genetic complex hereditary spastic paraplegia disorder with characteristics of adulthood-onset of slowly progressive, bilateral, mainly lower limb spasticity and distal weakness associated with lower limb pain, hyperreflexia, and reduced vibration sense. Axonal neuropathy is frequently observed on electromyography and nerve conduction examination.	Preferred (foundation metadata concept)
A rare genetic complex spastic paraplegia disorder with characteristics of infantile-onset of psychomotor developmental delay with severe intellectual disability and poor speech acquisition, associated with seizures (mostly myoclonic), muscular hypotonia which may be noted at birth and slowly progressive spasticity in the lower limbs leading to severe gait disturbances. Ocular abnormalities and incontinence are commonly associated. Other symptoms may include verbal dyspraxia, hypogenitalism, macrocephaly and sensorineural hearing loss, as well as dystonic movements and ataxia with upper limb involvement.	Preferred (foundation metadata concept)
A rare genetic congenital anomalies/dysmorphic syndrome characterised by growth failure, global developmental delay, profound intellectual disability, autistic behaviour, acquired second-degree heart block with bradycardia and vasomotor instability. Hands and feet present with long fusiform fingers, campto-clinodactyly and crowded toes while craniofacial dysmorphism includes microcephaly, broad forehead, thin eyebrows, upslanting palpebral fissures, large ears with prominent antihelix, prominent nose, long philtrum, thin upper lip vermillion and prominent lower lip. Neurological signs include hypotonia, brisk reflexes, dystonic-like movements and truncal ataxia and imaging shows cerebellar hypoplasia and simplified gyral pattern.	Preferred (foundation metadata concept)
A rare genetic congenital disorder of glycosylation and glycogen storage disease with characteristics of a wide range of clinical manifestations, most commonly presenting with bifid uvula with or without cleft palate at birth, associated with growth delay, hepatopathy with elevated aminotransferase serum levels, myopathy (including exercise-related fatigue, exercise intolerance, muscle weakness), intermittent hypoglycaemia, and dilated cardiomyopathy and/or cardiac arrest, due to decreased phosphoglucomutase 1 enzyme activity. Less common manifestations include malignant hyperthermia, rhabdomyolysis, and hypogonadotropic hypogonadism with delayed puberty. Caused by homozygous or compound heterozygous mutation in the PGM1 gene on chromosome 1p31.	Preferred (foundation metadata concept)
A rare genetic congenital disorder of glycosylation with characteristics of severe pre and post-natal short stature, joint hyperlaxity with multiple dislocations (elbows, fingers, hips, knees), and facial dysmorphism (round flat face, high forehead, hypertelorism, prominent bulging eyes with under-eye shadows, hypoplastic midface, microstomia, protruding lips). Other associated features may include cutaneous hyperextensibility, learning difficulties and ocular abnormalities. Advanced carpal ossification, widened metaphyses, and, occasionally, radioulnar synostosis, scoliosis and a Swedish key appearance of the proximal femora is observed on imaging.	Preferred (foundation metadata concept)
A rare genetic congenital hypothyroidism disorder with characteristics of mild global developmental delay in childhood, short stature, delayed bone age and abnormal thyroid and selenium levels in serum (high total and free T4 concentrations, low T3, high reverse T3, normal to high TSH, decreased selenium). Intellectual disability, primary infertility, hypotonia, muscle weakness and impaired hearing have also been reported. The disease can be caused by homozygous or compound heterozygous mutation in the SECISBP2 gene on chromosome 9q22.	Preferred (foundation metadata concept)
A rare genetic congenital limb malformation disorder with characteristics of bilateral medial displacement of the hallux and preaxial polysyndactyly of the first toes. Radiographs show broad, shortened, misshapen first metatarsals and may associate incomplete or complete duplication of proximal phalanges and duplication or triplication of distal phalanges. There have been no further descriptions in the literature since 1980.	Preferred (foundation metadata concept)
A rare genetic congenital limb malformation disorder with characteristics of hypoplasia or absence of central digital rays of the hands and/or feet and the presence of one or more, unilateral or bilateral, supernumerary digits on postaxial rays, ranging from hypoplastic digits devoid of osseous structures to complete duplication of a digit. Cutaneous syndactyly, symphalangism and clinodactyly have also been reported. There have been no further descriptions in the literature since 1982.	Preferred (foundation metadata concept)
A rare genetic congenital limb malformation disorder with characteristics of hypoplasia/aplasia of distal and/or middle phalanges in fingers and toes II-V (frequently severe in fingers/toes IV-V, milder in fingers/toes II-III) in association with proximal, and occasionally distal, symphalangism, fusion of carpal/tarsal bones and partial cutaneous syndactyly. Additional reported features include proximal placement of thumbs, sensorineural hearing loss and farsightedness. There is evidence this disease is caused by mutations in the bone morphogenetic protein antagonist Noggin (NOG).	Preferred (foundation metadata concept)
A rare genetic congenital limb malformation disorder with characteristics of isolated, postaxial oligodactyly in all four extremities. Patients present a consistent pattern of malformation ranging from complete absence of the 5th metacarpals, metatarsals and phalanges to complete absence of the 5th metacarpals and metatarsals, with some residual distal 5th phalanges. There have been no further descriptions in the literature since 1993.	Preferred (foundation metadata concept)
A rare genetic congenital limb malformation disorder with characteristics of the presence of a single digit on all four extremities. The malformation is typically isolated however, aplastic and hypoplastic defects in the remaining skeletal parts of hands and feet have been reported. There have been no further descriptions in the literature since 1992.	Preferred (foundation metadata concept)
A rare genetic congenital limb malformation disorder with characteristics of unilateral or bilateral postaxial polydactyly in the hands and preaxial polydactyly in the feet, associated with bilateral cutaneous syndactyly of first, second and third toes. Cutaneous syndactyly in hands has also been reported in some patients. There have been no further descriptions in the literature since 1994.	Preferred (foundation metadata concept)
A rare genetic congenital limb malformation syndrome with characteristics of a unique combination of bilateral, symmetrical camptodactyly and clinodactyly of fifth fingers, mesoaxial camptodactyly of toes and ulnar deviation of third fingers. Additional variable manifestations include bifid toes and severe syndactyly or synpolydactyly involving all digits of hands and feet.	Preferred (foundation metadata concept)
A rare genetic congenital limb malformation syndrome with characteristics of complete cutaneous syndactyly between toes 1-2, ulnar polydactyly (ranging from nubbins to an almost complete additional finger) and earlobe malformations. Additionally, abnormalities along the medial border of the foot are observed on X-ray imaging. There have been no further descriptions in the literature since 1976.	Preferred (foundation metadata concept)
A rare genetic congenital limb malformation syndrome with characteristics of mild to severe short stature, brachydactyly and retinal degeneration (usually retinitis pigmentosa) associated with variable intellectual disability, developmental delay and craniofacial anomalies. There is evidence the disease is caused by homozygous or compound heterozygous mutation in the CWC27 gene on chromosome 5q12.	Preferred (foundation metadata concept)
A rare genetic congenital limb malformation syndrome with characteristics of short stature, sparse scalp hair, hypoplastic, proximally placed thumbs and skin hyperpigmentation with areas of 'raindrop' depigmentation. Presence of a single, upper central incisor has also been reported. There have been no further descriptions in the literature since 1988.	Preferred (foundation metadata concept)
A rare genetic congenital limb malformation syndrome with characteristics of unilateral or bilateral fibular aplasia/hypoplasia, tibial campomelia, and lower limb oligo-syndactyly involving the lateral rays. Upper limb oligo-syndactyly and cleft lip/palate may also be associated.	Preferred (foundation metadata concept)
A rare genetic congenital limb malformation with characteristics of bilateral anomalous attachment of the extensor tendons of the four ulnar fingers. Attachment occurs to the medial and lateral aspects of the middle phalanges leading to constant flexion in the mid phalangeal joints and inability to extend the fingers. There have been no further descriptions in the literature since 1980.	Preferred (foundation metadata concept)
A rare genetic congenital limb malformation with characteristics of brachydactyly of fingers with major proximal phalangeal shortening and immobile proximal interphalangeal joints, as well as dorsally and proximally placed, non-articulating great toes (with or without angulation). Radiographic findings of hands include bilateral double first metacarpals and biphalangeal fifth fingers.	Preferred (foundation metadata concept)
A rare genetic congenital muscular alpha-dystroglycanopathy with brain and eye anomalies. The disorder has characteristics of a severe muscle-eye-brain disease-like phenotype associated with intellectual disability, muscular dystrophy, macrocephaly and extended bilateral multicystic white matter disease. There is evidence the disease is caused by homozygous mutation in the DAG1 gene on chromosome 3p21.	Preferred (foundation metadata concept)
A rare genetic congenital muscular dystrophy due to dystroglycanopathy disorder with characteristics of a wide phenotypic spectrum which includes hypotonia and muscular weakness present at birth or early infancy, delayed or arrested motor development and normal intellectual abilities with normal (or only mild abnormalities) neuroimaging studies. Feeding difficulties, joint and spinal deformities and respiratory insufficiency may be associated. Decreased alpha-dystroglycan on immunohistochemical muscle staining and elevated serum creatine kinase are observed.	Preferred (foundation metadata concept)
A rare genetic congenital muscular dystrophy due to dystroglycanopathy disorder. The disease has characteristics of a wide phenotypic spectrum including hypotonia and muscular weakness, which is present at birth or early infancy and delayed or arrested motor development associated with mild to severe intellectual disability and variable brain abnormalities on neuroimaging studies. Feeding difficulties, joint and spinal deformities, respiratory insufficiency and ocular anomalies (for example strabismus, retinal dystrophy, oculomotor apraxia) may be associated. Decreased or absent alpha-dystroglycan on immunohistochemical muscle staining and elevated serum creatine kinase are observed.	Preferred (foundation metadata concept)
A rare genetic congenital muscular dystrophy due to extracellular matrix protein anomaly. The disease has characteristics of early motor development delay and muscle weakness with mild elevation of serum creatine kinase that may be followed by progressive disease course with predominantly proximal muscle weakness and atrophy, motor development regress, scoliosis and respiratory insufficiency. There is evidence this disease is caused by compound heterozygous mutation in the ITGA7 gene on chromosome 12q13.	Preferred (foundation metadata concept)
A rare genetic congenital non-dystrophic myopathy characterised by neonatal or infantile-onset hypotonia and mild to severe generalised muscle weakness. Causative gene mutation is ACTA1 (1q42.13).	Preferred (foundation metadata concept)
A rare genetic congenital non-dystrophic myopathy characterised by neonatal or infantile-onset hypotonia and mild to severe generalised muscle weakness. Causative gene mutation is TPM3 (1q21.3).	Preferred (foundation metadata concept)
A rare genetic congenital non-dystrophic myopathy characterised by neonatal or infantile-onset hypotonia and mild to severe generalised muscle weakness. Caused by SELENON (1p36.11) gene mutation.	Preferred (foundation metadata concept)
A rare genetic congenital non-dystrophic myopathy characterised by neonatal or infantile-onset hypotonia and mild to severe generalised muscle weakness. Caused by homozygous mutation in the ZAK gene on chromosome 2q31.	Preferred (foundation metadata concept)
A rare genetic congenital non-dystrophic myopathy characterised by neonatal or infantile-onset hypotonia and mild to severe generalised muscle weakness. Limb weakness may be greatest in the limb girdle and proximal limb muscles, but weakness is never solely distal. Facial weakness is often present, resulting in a long face, high-arched palate, and tented upper lip. Histologically, there is a characteristic (but not specific) reduction in the caliber of type 1 muscle fibres. Type 1 muscle fibres are predominant compared to type 2 fibres, which are either normal or hypertrophied. Causative mutations have been identified more frequently in 4 genes, ACTA1 (1q42.13), RYR1 (19q13.2), TPM3 (1q21.3), and SELENON (1p36.11). For the majority of cases the pattern of inheritance is either autosomal recessive or autosomal dominant. X-linked inheritance has been reported.	Preferred (foundation metadata concept)
A rare genetic congenital secondary polycythaemia disorder characterised by increased haemoglobin, haematocrit and erythropoietin serum levels and normal oxygen affinity, which usually manifests with headache, dizziness, dyspnoea and/or plethora. Patients present an increased risk of haemorrhage, thrombosis and early death. There is evidence this disease is caused by homozygous or compound heterozygous mutation in the VHL gene on chromosome 3p25.	Preferred (foundation metadata concept)
A rare genetic constitutional aplastic anaemia disorder characterised by severe peripheral blood pancytopenia and bone marrow hypoplasia in multiple individuals of a family, in the absence of any somatic symptoms. Abnormal bleeding, as well as erythrocyte macrocytosis, is reported and patients usually become transfusion-dependent.	Preferred (foundation metadata concept)
A rare genetic constitutional coagulation factor defect disorder characterised by a bleeding tendency of variable severity due to methionine 358 to arginine replacement (Pittsburgh mutation) in the alpha-1-antitrypsin protein. Patients present with spontaneous haematomas, haematomas following minor trauma or surgery and in female patients ovarian haematomas after ovulation.	Preferred (foundation metadata concept)
A rare genetic constitutional dyserythropoietic anaemia disorder characterised by moderate to severe anaemia without thrombocytopenia, variable degrees of neutropenia and bone marrow biopsy findings of trilineage dysplasia and hypocellularity of erythroid and granulocytic lineages. Peripheral blood findings include anisocytosis, macrocytosis, poikilocytosis, elliptocytes, and fragmented erythrocytes. Caused by mutation in the GATA1 gene on chromosome Xp11.	Preferred (foundation metadata concept)
A rare genetic corneal dystrophy disorder with characteristics of corneal opacification and dyskeratosis (which may cause visual impairment), associated with systemic features including palmoplantar hyperkeratosis, laryngeal dyskeratosis, pruritic hyperkeratotic scars, chronic rhinitis, dyshidrosis and/or nail thickening.	Preferred (foundation metadata concept)
A rare genetic cranial malformation syndrome with characteristics of premature fusion of multiple or all calvarial sutures (resulting in variable abnormal shape of the head), midface hypoplasia, delayed and ectopic tooth eruption and supernumerary teeth. Associated facial dysmorphism includes proptosis, hypertelorism, beaked nose, and relative prognathism. Variable digital anomalies (for example finger and/or toe syndactyly, clinodactyly), short stature, cognitive and/or motor delay, high palate, ear deformity and conductive hearing loss have also been reported. There is evidence this disease is caused by homozygous mutation in the IL11RA gene on chromosome 9p13.	Preferred (foundation metadata concept)
A rare genetic cranial malformation with characteristics of unilateral or bilateral synostosis of the lambdoid suture in multiple members of a single family. Unilateral cases typically present ipsilateral occipitomastoid bulge, compensatory contralateral parietal and frontal bossing, displacement of one ear, lateral deviation of jaw and compensatory deformation of cervical spine while bilateral cases usually manifest with flat and widened occiput, displacement of both ears and frequent occurrence of raised intracranial pressure.	Preferred (foundation metadata concept)
A rare genetic cutaneous disorder with characteristics of leukonychia and multiple recurrent pilar cysts associated or not with ciliar dystrophy and/or koilonychia. Renal calculi have also been reported.	Preferred (foundation metadata concept)
A rare genetic demyelinating hereditary motor and sensory neuropathy disorder with characteristics of slowly progressive mild to moderate distal muscle weakness and atrophy of the upper and lower limbs and variable distal sensory impairment, associated with variable hyperextensible skin and age-related macular degeneration. Hypermobility of distal joints, high palate, and minor skeletal abnormalities (for example pectus excavatus, dolichocephaly) may also be associated. There is evidence the disease is caused by heterozygous mutation in the gene encoding fibulin-5 (FBLN5) on chromosome 14q32.	Preferred (foundation metadata concept)
A rare genetic dentin dysplasia disease with characteristics of extreme microdontia, oligodontia and abnormal tooth shape (including globular teeth, incisal notches and double tooth formation). Short roots with a variable pulp phenotype (including taurodontia and flame-shaped pulp) enamel hypoplasia and anterior open bite may also be associated. Caused by homozygous mutation in the SMOC2 gene on chromosome 6q27.	Preferred (foundation metadata concept)
A rare genetic dermis disorder with characteristics of bilateral fairly symmetrical antecubital webbing extending from distal third of humerus to proximal third of forearm, associated with musculoskeletal abnormalities (such as absent long head of triceps, bilateral posterior dislocation of the radial head and hypoplasia of the olecranon processes) and absent skin creases over the terminal interphalangeal joints of fingers. Clinically manifests with moderate to severe elbow extension and supination limitation.	Preferred (foundation metadata concept)
A rare genetic dermis disorder with characteristics of slowly progressive thickening of the scalp, which becomes raised and forms ridges and furrows with symmetrical distribution resembling the cerebral gyri and cannot be flattened by traction or pressure, associated with ophthalmologic (for example congenital cataract) and/or neurological abnormalities (for example intellectual disability, epilepsy, microcephaly, encephalopathy).	Preferred (foundation metadata concept)
A rare genetic dermis elastic tissue disease with characteristics of redundant, over folded skin of variable severity, ranging from wrinkly skin to cutis laxa associated with pre and post-natal growth retardation, hypotonia, mild to moderate developmental delay, late closure of anterior fontanelle, and craniofacial dysmorphism (including microcephaly, hypertelorism, downslanting palpebral fissures, large, prominent nasal root with funnel nose, small low-set ears, long philtrum, drooping facial skin). Additional manifestations may include seizures, intellectual disability, congenital hip dislocation, inguinal hernia and cortical and cerebellar malformations. Pretibial pseudo-ecchymotic skin lesions have occasionally been associated.	Preferred (foundation metadata concept)
A rare genetic dermis elastic tissue disorder characterised by generalised cutis laxa associated with severe usually early-onset pulmonary emphysema, frequent and severe gastrointestinal and genitourinary involvement (such as bladder/intestine diverticula and/or tortuosity, gastrointestinal fragility, hydronephrosis), and mild cardiovascular involvement (typically limited to peripheral pulmonary artery stenosis only). Caused by homozygous or compound heterozygous mutation in the LTBP4 gene on chromosome 19q13.	Preferred (foundation metadata concept)
A rare genetic dermis elastic tissue disorder with characteristics of yellowish skin papules (resembling pseudoxanthoma elasticum) located on the neck, chest and/or flexural areas associated with loose, redundant, sagging skin on trunk and upper limbs and retinitis pigmentosa, in the absence of clotting abnormalities. Patient present reduced night and peripheral vision, as well as optic nerve pallor, retinal pigment epithelium loss, attenuated retinal vessels and/or black pigment intra-retinal clumps.	Preferred (foundation metadata concept)
A rare genetic development defect during embryogenesis malformation syndrome with the association of characteristic facial features (including abnormal head shape with narrow forehead, hypertelorism, telecanthus, small earlobes, broad nasal bridge and tip, underdeveloped ala nasi, small/wide mouth and high/cleft palate), ectodermal dysplasia (including oligodontia with delayed dentition, slow growing hair and reduced sweating) and skeletal abnormalities including camptodactyly and caudal appendage. Short stature and abnormal palmar creases are additional clinical features.	Preferred (foundation metadata concept)
A rare genetic developmental and epileptic encephalopathy with characteristics of developmental delay, generalised epilepsy consisting of eyelid myoclonia with absences and myoclonic-atonic seizures, intellectual disability and autism spectrum disorder (ASD). The SYNGAP1 gene (6p21.32) encodes the synaptic Ras-GTPase-activating protein 1, mainly expressed in the synapses of excitatory neurons. Loss of function mutations in SYNGAP1 impairs neuronal homeostasis and development. This disorder is caused by heterozygous pathogenic SYNGAP1 variants or chromosome 6p21.32 microdeletions encompassing the SYNGAP1 gene. The pattern of inheritance is autosomal dominant.	Preferred (foundation metadata concept)
A rare genetic developmental defect during embryogenesis disorder with characteristics of abnormal forward projection of the mandible beyond the standard relation to the cranial base, with lower incisors often overlapping the upper incisors, that is inherited in an autosomal dominant manner. Association with mildly everted lower eyelids, flat malar area, thickened lower lip and craniosynostosis has been reported.	Preferred (foundation metadata concept)
A rare genetic developmental defect during embryogenesis disorder with characteristics of craniofacial dysmorphism (including brachycephaly, prominent forehead, sparse lateral eyebrows, severe hypertelorism, upslanting palpebral fissures, epicanthal folds, protruding ears, broad nasal bridge, pointed nasal tip, flat philtrum, anteverted nostrils, large mouth, thin upper vermilion border, highly arched palate and mild micrognathia) associated with osteopenia leading to repeated long bone fractures, severe myopia, mild to moderate sensorineural or mixed hearing loss, enamel hypoplasia, sloping shoulders and mild intellectual disability. There is evidence the disease can be caused by homozygous mutation in the IRX5 gene on chromosome 16q11.2.	Preferred (foundation metadata concept)
A rare genetic developmental defect during embryogenesis disorder with characteristics of partial (unilateral testis, persistence of Mullerian duct structures) or complete (streak gonads only) gonadal dysgenesis, usually manifesting with primary amenorrhoea in individuals with female phenotype but 46,XY karyotype, and sensorimotor dysmyelinating mini fascicular polyneuropathy, which presents with numbness, weakness, exercise-induced muscle cramps, sensory disturbances and reduced/absent deep tendon reflexes. Germ cell tumours (seminoma, dysgerminoma, gonadoblastoma) may develop from the gonadal tissue. May be caused by mutation in the desert hedgehog gene (DHH).	Preferred (foundation metadata concept)
A rare genetic developmental defect during embryogenesis disorder with characteristics of severe early-onset salt-wasting adrenal insufficiency and ambiguous/female external genitalia (irrespective of chromosomal sex) due to mutations in the CYP11A1 gene. Milder cases may present delayed onset of adrenal gland dysfunction and genitalia phenotype may range from normal male to female in individuals with 46,XY karyotype. Imaging studies reveal hypoplastic/absent adrenal glands and biochemical findings include low serum cortisol, mineralocorticoids, androgens and sodium with elevated potassium levels. Caused by heterozygous, compound heterozygous or homozygous mutation in the CYP11A1 gene on chromosome 15q23-q24.	Preferred (foundation metadata concept)
A rare genetic developmental defect during embryogenesis disorder with characteristics of the lack of epidermal ridges on the palms and soles, resulting in the absence of fingerprints, with no other associated manifestations. It is associated with a reduced number of sweat gland openings and reduced transpiration of palms and soles. There is evidence the disorder is caused by heterozygous mutation in the SMARCAD1 gene on chromosome 4q22.	Preferred (foundation metadata concept)
A rare genetic developmental defect during embryogenesis malformation syndrome with characteristics of intrauterine growth restriction, flexion arthrogryposis of all joints, severe microcephaly, renal cystic dysplasia/agenesis/hypoplasia and complex malformations of the brain (cerebral and cerebellar hypoplasia, vermis, corpus callosum and/or occipital lobe agenesis, with or without arhinencephaly), as well as of the genitourinary tract (ureteral agenesis/hypoplasia, uterine hypoplasia and/or vaginal atresia), leading to fetal demise.	Preferred (foundation metadata concept)
A rare genetic developmental defect during embryogenesis malformation syndrome. The syndrome is characterised by severe postnatal growth retardation, craniofacial dysmorphism, which includes a progeroid facial appearance, brachycephaly with hypoplasia of the frontal and parietal tubers and a flat occipital area, narrow forehead, prominent glabella, small orbit, slight bilateral exophthalmos, straight nose, hypoplastic cheekbones, long philtrum and thin lips, skeletal abnormalities (i.e. micromelia, brachydactyly, and severe short stature with short limbs), normal intelligence, Pelger-Huët anomaly of leucocytes, loose skin with decreased tissue turgor, and bilateral optic atrophy with loss of colour vision and visual acuity. Recurrent liver failure triggered by fever has been occasionally reported. Radiographs may evidence delayed bone age, late ossification and/or osteoporosis.	Preferred (foundation metadata concept)
A rare genetic developmental defect during embryogenesis syndrome with characteristics of Robin sequence (severe micrognathia, retroglossia and U-shaped cleft of the posterior palate) associated with pre and postaxial oligodactyly. Facial features can include a narrow face and narrow lower dental arch. Clinodactyly, absent phalanx, metacarpal fusions, and hypoplastic carpals have also been reported. There have been no further descriptions in the literature since 1986.	Preferred (foundation metadata concept)
A rare genetic developmental defect during embryogenesis syndrome with characteristics of agenesis of the corpus callosum, mild to severe neurological manifestations (intellectual disability, developmental delay, epilepsy, dystonia), and urogenital anomalies (hypospadias, cryptorchidism, renal dysplasia, ambiguous genitalia). Additionally skeletal anomalies (limb contractures, scoliosis), dysmorphic facial features (large eyes, prominent supraorbital ridges, synophrys) and optic atrophy have been observed. The disease is caused by mutation in the ARX gene.	Preferred (foundation metadata concept)
A rare genetic developmental defect during embryogenesis syndrome with characteristics of camptodactyly, joint contractures with amyotrophy, and ectodermal anomalies (oligodontia, enamel abnormalities, longitudinally broken nails, hypohidrotic skin with tendency to excessive bruising and scarring after injuries and scratching), as well as growth retardation, kyphoscoliosis, mild facial dysmorphism and microcephaly. There have been no further descriptions in the literature since 1992.	Preferred (foundation metadata concept)
A rare genetic developmental defect during embryogenesis syndrome with characteristics of postaxial polydactyly and other abnormalities of the hands and feet (for example brachydactyly, broad toes), hypoplasia and fusion of the vertebral bodies, as well as dental abnormalities (fused teeth, macrodontia, hypodontia, short roots). There have been no further descriptions in the literature since 1977.	Preferred (foundation metadata concept)
A rare genetic developmental defect during embryogenesis syndrome with characteristics of severe intellectual disability, distinct dysmorphic facial features (including triangular face with prominent forehead, narrow palpebral fissures, deep-set eyes, low-set ears, broad nose, malar hypoplasia, short philtrum, macrostomia, widely spaced teeth) and pre and postnatal proportionate short stature, ranging from primordial dwarfism to a milder phenotype with less severe growth restriction. Other reported features include skeletal findings (for example scoliosis), microcephaly, involuntary hand movements, hypersensitivity to stimuli and anxiety. There is evidence this disease is caused by homozygous or compound heterozygous mutation in the LARP7 gene on chromosome 4q25.	Preferred (foundation metadata concept)
A rare genetic developmental defect during embryogenesis syndrome with characteristics of the association of complete, partial or submucous cleft palate and ankyloglossia. Patients may also present abnormal uvula (for example absent, bifid, shortened or laterally deviated), short lingual frenulum and dental anomalies (for example buccal crossbite, absent and/or misshapen teeth). Digital abnormalities, such as mild clinodactyly and/or syndactyly, have also been reported.	Preferred (foundation metadata concept)
A rare genetic developmental defect during embryogenesis syndrome with characteristics of total or partial colonic aganglionosis associated with peripheral usually multifocal, neuroblastic neoplasm (ganglioneuroblastoma, neuroblastoma, ganglioneuroma). Congenital central hypoventilation syndrome, with variable severity of respiratory compromise, cardiovascular and ophthalmologic symptoms, consistent with autonomic nervous system dysfunction is occasionally associated.	Preferred (foundation metadata concept)
A rare genetic developmental defect during embryogenesis syndrome with the triad of pancreatic fibrosis (and cysts, with a reduction of parenchymal tissue), renal dysplasia (with peripheral cortical cysts, primitive collecting ducts, glomerular cysts and metaplastic cartilage) and hepatic dysgenesis (enlarged portal areas containing numerous elongated binary profiles with a tendency to perilobular fibrosis). Situs abnormalities, skeletal anomalies and anencephaly have also been associated. Patients that survive the neonatal period present renal insufficiency, chronic jaundice and insulin-dependant diabetes.	Preferred (foundation metadata concept)
A rare genetic developmental defect during embryogenesis with characteristics of a range of developmental eye anomalies (including anophthalmia, microphthalmia, colobomas, microcornea, corectopia, cataract) and symmetric limb rhizomelia with short stature and contractures of large joints. Intellectual disability with autistic features, macrocephaly, dysmorphic features, urogenital anomalies (hypospadia, cryptorchidism), cutaneous syndactyly and precocious puberty may also be present.	Preferred (foundation metadata concept)
A rare genetic developmental defect during embryogenesis with characteristics of distinct facial features (long triangular face, broad forehead, narrow nose and mandible, high arched palate), prominent, dysmorphic ears (low-set and cup-shaped with large conchae and hypoplastic tragus, antitragus and lobe), long neck, preauricular and/or branchial fistulas and/or cysts, hypoplastic cervical muscles with sloping shoulders and clavicles, winged, low, and laterally-set scapulae, hearing impairment and mild intellectual deficit. Vertebral defects and short stature may also be associated.	Preferred (foundation metadata concept)
A rare genetic developmental defect during embryogenesis with characteristics of omphalocele associated with facial dysmorphism including flat face, short, upturned nose, long and wide philtrum and flattened maxillary arch and abnormalities of hands.	Preferred (foundation metadata concept)
A rare genetic developmental defect during embryogenesis with characteristics of severe pre and postnatal growth retardation, severe microcephaly, severe developmental delay and intellectual disability, severe adult short stature and facial dysmorphism (including hypotelorism, small ears, prominent nose). Other reported features include skeletal anomalies (Madelung deformity, clinodactyly, mild lumbar scoliosis, bilateral hip dysplasia) and seizures. Absence of thelarche and menarche is also associated.	Preferred (foundation metadata concept)
A rare genetic developmental defect during embryogenesis with characteristics of severe psychomotor delay, intellectual disability, congenital, symmetrical circumferential skin creases of arms and legs, cleft palate, and facial dysmorphism (including elongated face, high forehead, blepharophimosis, short palpebral fissures, microphthalmia, microcornea, epicanthic folds, telecanthus, microtia, posteriorly angulated ears, broad nasal bridge, microstomia and micrognathia). Additional features reported include short stature, microcephaly, hypotonia, pectus excavatum, severe scoliosis, hypoplastic scrotum and mixed hearing loss.	Preferred (foundation metadata concept)
A rare genetic developmental defect during embryogenesis with characteristics of various ophthalmic anomalies (including congenital microphthalmia, microcornea, cataract, anterior segment dysgenesis, ocular coloboma and early onset rod-cone dystrophy) and abnormal external ears (low-set pinna with crumpled helix, narrow intertragic incisure, abnormal bridge connecting the crus of the helix and the anthelix, narrow external acoustic meatus and lobule aplasia). There is evidence the disease is caused by homozygous mutation in the HMX1 gene on chromosome 4p16.	Preferred (foundation metadata concept)
A rare genetic developmental defect during embryogenesis with primary characteristics of congenital hypopituitarism and/or postaxial polydactyly. It can be associated with short stature, delayed bone age, hypogonadotropic hypogonadism, and/or midline facial defects (e.g. hypotelorism, mild midface hypoplasia, flat nasal bridge, and cleft lip and/or palate). Hypoplastic anterior pituitary and ectopic posterior pituitary lobe are frequent findings on MRI examination.	Preferred (foundation metadata concept)
A rare genetic developmental defect during embryogenesis. A syndrome characterised by the association of congenital poikiloderma (P), generalised alopecia (A), retrognathism (R) and cleft palate (C). There have been no further descriptions in the literature since 1990.	Preferred (foundation metadata concept)
A rare genetic developmental defect during embryogenesis. The disease has the typical lethal multiple pterygium syndrome presentation comprising of multiple pterygia, severe arthrogryposis, cleft palate, cystic hygromata and/or fetal hydrops, skeletal abnormalities and fetal death in the second or third trimester with an X-linked pattern of inheritance.	Preferred (foundation metadata concept)
A rare genetic developmental defect of the eye disease with characteristics of childhood onset of mild to severe myopia with microcornea and chorioretinal atrophy typically associated with telecanthus and posteriorly rotated ears. Other variable features include early-onset cataracts, ectopia lentis, ectopia pupil and retinal detachment. There is evidence the disease is caused by homozygous mutation in the ADAMTS18 gene on chromosome 16q23.	Preferred (foundation metadata concept)
A rare genetic disease caused by lack of lysyl hydroxylase-3 (LH3) activity with characteristics of multiple tissue and organ involvement, including skeletal abnormalities (club foot, progressive scoliosis, osteopenia, pathologic fractures), ocular involvement (flat retinae, myopia, cataracts) and hair, nail and skin anomalies (coarse, abnormally distributed hair, skin blistering, reduced palmar creases, hypoplastic nails). Patients also present intrauterine growth retardation, facial dysmorphism (flat facial profile, low-set ears, shallow orbits, short and upturned nose, downturned corners of mouth) and joint flexion contractures. Growth and developmental delay, bilateral sensorineural deafness, friable diaphragm and later-onset spontaneous vascular ruptures are additional reported features. The disorder is caused by mutation in the PLOD3 gene, which encodes lysyl hydroxylase-3	Preferred (foundation metadata concept)

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Reference Sets

Reference set descriptor

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Id	Description	Lang	Type	Status	Case?	Module
900000000001112010	Great Britain English language reference set	en	Synonym (core metadata concept)	Active	Entire term case sensitive (core metadata concept)	SNOMED CT model component module (core metadata concept)
900000000001113017	GB English	en	Synonym (core metadata concept)	Active	Entire term case sensitive (core metadata concept)	SNOMED CT model component module (core metadata concept)
900000000001114011	Great Britain English language reference set (foundation metadata concept)	en	Fully specified name	Active	Entire term case sensitive (core metadata concept)	SNOMED CT model component module (core metadata concept)