| Inbound Relationships |
Type |
Active |
Source |
Characteristic |
Refinability |
Group |
| A rare, X-linked syndromic intellectual disability disorder characterized by severe intellectual disability, psychomotor developmental delay, generalized seizures, and psoriasis. Mild craniofacial dysmorphism, such as hypertelorism, broad nasal bridge, anteverted nares, macrostomia, highly arched palate and large ears, is also associated. There have been no further descriptions in the literature since 1988. |
Is a |
True |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| Vici syndrome is a very rare and severe congenital multisystem disorder characterized by the principal features of agenesis of the corpus callosum, cataracts, oculocutaneous hypopigmentation, cardiomyopathy and combined immunodeficiency. |
Is a |
True |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| X-linked intellectual disability-acromegaly-hyperactivity syndrome is characterized by severe intellectual deficit, acromegaly and hyperactivity. The syndrome has been described in two half-brothers. Dysarthria, aggressive behavior, a characteristic facies (an acromegalic and triangular face with a long nose) and macroorchidism were also present. The mother displayed moderate intellectual deficit and milder facial anomalies. Central nervous system anomalies were identified in the two boys: subarachnoid cysts and hyperdensity in the pontine region. |
Is a |
True |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| A very rare congenital genetic neurological disorder characterized by agenesis/hypoplasia of corpus callosum with developmental abnormalities, ocular disorders, and variable craniofacial and skeletal abnormalities. |
Is a |
True |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| A rare genetic neurodegenerative disorder characterized by congenital microphthalmia, sunken eyes, blindness, microcephaly, severe intellectual disability, progressive spasticity, and seizures. Psychomotor development is normal in the first 6-8 months of life and thereafter declines rapidly and continuously. Brain MRI reveals progressive and extensive degenerative changes, especially cortex, cerebellum, brainstem, and corpus callosum atrophy, with complete loss of cerebral white matter. |
Is a |
False |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| A very rare disorder associating pseudopapilledema (optic disc swelling not secondary to increased intracranial pressure), mixed hearing loss, facial dysmorphism and limb extremity anomalies. |
Is a |
False |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| A rare neurodegenerative disease usually presenting before the age of 30 and which is characterized by dystonia, L-dopa-responsive parkinsonism, pyramidal signs and rapid cognitive decline. |
Is a |
True |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| A multiple congenital anomaly disorder characterized by anonychia congenita totalis and microcephaly, and normal intelligence along with some minor anomalies including single transverse palmar creases, fifth-finger clinodactyly and widely spaced teeth. |
Is a |
False |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| An extremely rare malformation syndrome characterized by the association of partial distal aphalangia with syndactyly, duplication of metatarsal IV, microcephaly, and mild intellectual disability. |
Is a |
False |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| A rare genetic syndromic intellectual disability characterized by global developmental delay, intellectual disability, infantile or childhood onset of progressive ataxia, and bilateral sensorineural hearing impairment. Variable features include signs of upper and lower motor neuron disease, peripheral neuropathy, myopathic facies, lower limb muscle wasting, and heel contractures. There have been no further descriptions in the literature since 1993. |
Is a |
False |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| A rare, genetic, neurological disorder characterized by horizontal gaze palsy, sensorineural deafness, central hypoventilation, developmental delay, and intellectual disability, described in persons of Athabascan American Indian heritage. Swallowing dysfunction, vocal cord paralysis, facial paresis, seizures, internal carotid artery, and cardiac outflow tract anomalies may be additionally observed. No dysmorphic facial features are associated. |
Is a |
True |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| A rare, severe, circulatory system disease characterized by premature, diffuse, severe atherosclerosis (including the aorta and renal, coronary, and cerebral arteries), sensorineural deafness, diabetes mellitus, progressive neurological deterioration with cerebellar symptoms and photomyoclonic seizures, and progressive nephropathy. Partial deficiency of mitochondrial complexes III and IV in the kidney and fibroblasts (but not in muscle) may be associated. There have been no further descriptions in the literature since 1994. |
Is a |
True |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| A rare, inherited disorder characterized by widespread calcifications of basal ganglia and cortex, developmental delay, small stature, retinopathy and microcephaly. The absence of progressive deterioration of the neurological functions is characteristic of the disease. |
Is a |
False |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| A rare autosomal dominant neurological disorder characterized by early onset cerebellar ataxia, associated with areflexia, progressive optic atrophy, sensorineural deafness, a pes cavus deformity, and abnormal eye movements. |
Is a |
False |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| A rare malformation disorder characterized by sagittal craniosynostosis, Dandy-Walker malformation, hydrocephalus, craniofacial dysmorphism (including dolichocephaly, hypertelorism, micrognathia, positional ear deformity) and variable developmental delay. |
Is a |
True |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| Craniosynostosis-intracranial calcifications syndrome is a form of syndromic craniosynostosis characterized by pancraniosynostosis, head circumference below the mid-parental head circumference, mild facial dysmorphism (prominent supraorbital ridges, mild proptosis and maxillary hypoplasia) and calcification of the basal ganglia. The disease is associated with a favorable neurological outcome, normal intelligence and is inherited in an autosomal recessive manner. |
Is a |
False |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| Cystic leukoencephalopathy without megalencephaly is characterized by non-progressive leukoencephalopathy, bilateral cysts in the anterior part of the temporal lobe, cerebral white matter anomalies and severe psychomotor impairment. Less than 50 patients have been described in the literature so far. Inheritance is most likely autosomal recessive. |
Is a |
True |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| Cerebro-oculo-nasal syndrome is a multisystem malformation syndrome that has been reported in about 10 patients. The clinical features include bilateral anophthalmia, abnormal nares, central nervous system anomalies, and neurodevelopmental delay. |
Is a |
True |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| syndrome d'Ehlers-Danlos-hétérotopie nodulaire périventriculaire |
Is a |
False |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| Filippi syndrome is characterized by microcephaly, cutaneous syndactyly of the fingers and toes, intellectual deficit, growth retardation and a characteristic facies (high and broad nasal bridge, thin alae nasi, micrognathia and a high frontal hairline). So far, less than 25 cases have been reported. Cryptorchidism, polydactyly, and teeth and hair anomalies may also be present. Transmission is autosomal recessive. |
Is a |
False |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| Hall-Riggs syndrome is a very rare syndrome consisting of microcephaly with facial dysmorphism, spondylometaphyseal dysplasia and severe intellectual deficit. |
Is a |
False |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| Short stature-pituitary and cerebellar defects-small sella turcica syndrome is characterized by short stature, anterior pituitary hormone deficiency, small sella turcica, and a hypoplastic anterior hypophysis associated with pointed cerebellar tonsils. It has been described in three generations of a large French kindred. Ectopia of the posterior hypophysis was observed in some patients. The syndrome is transmitted as a dominantly inherited trait and is caused by a germline mutation within the LIM-homeobox transcription factor LHX4 gene (1q25). |
Is a |
True |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| Developmental malformations-deafness-dystonia syndrome is characterized by the association of midline malformations, sensory hearing loss, and a delayed-onset generalized dystonia syndrome. |
Is a |
True |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| Familial Alzheimer-like prion disease is an exceedingly rare form of prion disease characterized by the neuropathological features of Alzheimer disease including memory impairment and depression, related to abnormal prion protein (PrP) caused by a gene mutation in PRNP. Patients present with a prolonged, atypical course (absence of myoclonus or ataxia) unlike other forms of prion disease with severe neurofibrillary tangle pathology and high levels of cerebral amyloidosis. |
Is a |
False |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| Beemer-Ertbruggen syndrome is a lethal malformation syndrome reported in 2 brothers of first-cousin parents that is characterized by hydrocephalus, cardiac malformation, dense bones, and unusual facies with down-slanting palpebral fissures, bulbous nose, broad nasal bridge, micrognathia and a long upper lip. There have been no further descriptions in the literature since 1984. |
Is a |
True |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| A rare infantile onset neurometabolic disease characterized by dystonia, parkinsonism, nonambulation, autonomic dysfunction, developmental delay and mood disturbances. |
Is a |
True |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| A rare severe neurodegenerative disorder that is considered one of the phenocopies of Huntington Disease (HD) affecting patients of African descent and characterized by a triad of movement (chorea, oculomotor, parkinsonism), psychiatric (prominently sadness, irritability and anxiety), and cognitive abnormalities (early cognitive decline and subcortical-like dementia). |
Is a |
False |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| A rare multiple congenital anomalies syndrome characterized principally by Sprengel anomaly (upward displacement of the scapula) and hydrocephaly. Other anomalies such as global developmental delay, psychosis, brachydactyly, and costovertebral dysplasia may also be present. |
Is a |
True |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| A rare form of syndromic obesity characterized by the association of congenital hydrocephalus, centripetal obesity, hypogonadism, intellectual deficit and short stature. |
Is a |
True |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| This syndrome is characterized by the association of hypogonadotropic hypogonadism and frontoparietal alopecia. |
Is a |
True |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| A rare multiple congenital anomalies/dysmorphic syndrome characterized by microcephaly, developmental delay and intellectual disability, postnatal growth retardation, dysmorphic craniofacial features (including sloping forehead, beaked nose, large and protruding ears, micrognathia, high-arched palate, and craniosynostosis), immunologic abnormalities with transient hypogammaglobulinemia in infancy and defective chemotaxis leading to recurrent infections, as well as autoimmune/autoinflammatory phenomena. Skeletal anomalies and hypogonadism have also been reported. |
Is a |
False |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| Lowry-MacLean syndrome is a very rare syndrome characterized by microcephaly, craniosynostosis, glaucoma, growth failure and visceral malformations. |
Is a |
False |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| Lymphedema-cerebral arteriovenous anomaly syndrome is characterized by the variable association of a cerebrovascular malformation, foot lymphedema and primary pulmonary hypertension. It has been described in a woman and four of her children. There have been no further descriptions in the literature since 1986. |
Is a |
False |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| A rare disorder characterized by the association of epiphyseal dysplasia, short stature, microcephaly and, in the first reported cases, congenital nystagmus. So far, less than 10 cases have been described in the literature. Variable degrees of intellectual deficit have also been reported. Other occasional features include retinitis pigmentosa and coxa vara. Transmission appears to be autosomal recessive. |
Is a |
False |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| Isotretinoin-like syndrome is a phenocopy of the isotretinoin embryopathy. |
Is a |
True |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| Hypogonadism with anosmia |
Is a |
False |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| Oculopalatocerebral syndrome is characterized by the association of four anomalies: intellectual deficit, microcephaly, palate anomalies and ocular abnormalities. |
Is a |
False |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| A rare, genetic, syndromic intellectual disability characterized by severe intellectual disability, distinctive craniofacial features and variable multiple congenital anomalies including ocular, brain, urogenital and skeletal abnormalities. |
Is a |
False |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| This syndrome is characterized by the association of intellectual deficit, congenital cataract, and hypogonadotropic hypogonadism. |
Is a |
False |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| A rare lethal combination of manifestations including short stature, congenital cataracts, encephalopathy with epileptic fits, and postmortem confirmation of nephropathy (renal tubular necrosis). There have been no further descriptions in the literature since 1963. |
Is a |
True |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| A rare, genetic, neurocutaneous disease characterized by severe developmental abnormalities of the nervous system and aberrant differentiation of the epidermis. Patients present with a unique constellation of clinical signs described with the acronym CEDNIK: CErebral Dysgenesis, Neuropathy, Ichthyosis, and palmoplantar Keratoderma. |
Is a |
True |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| Congenital hereditary facial paralysis-variable hearing loss syndrome is an extremely rare autosomal recessive disorder characterized by bilateral facial palsy with masked facies, sensorineural hearing loss, dysmorphic features (midfacial retrusion, low-set ears), and strabismus. |
Is a |
True |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| Congenital intrauterine infection-like syndrome is characterized by the presence of microcephaly and intracranial calcifications at birth accompanied by neurological delay, seizures and a clinical course similar to that seen in patients after intrauterine infection with Toxoplasma gondii, Rubella, Cytomegalovirus, Herpes simplex (so-called TORCH syndrome), or other agents, despite repeated tests revealing the absence of any known infectious agent. |
Is a |
False |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| A rare multiple congenital anomalies syndrome characterized by cutaneous mastocytosis, microcephaly, microtia and/or hearing loss, hypotonia and skeletal anomalies (e.g. clinodactyly, camptodactyly, scoliosis). Additional common features are short stature, intellectual disability and difficulties. Facial dysmorphism may include upslanted palpebral fissures, highly arched palate and micrognathia. Rarely, seizures and asymmetrically small feet have been reported. |
Is a |
False |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| A rare genetic multiple congenital anomalies/dysmorphic syndrome characterized by psychomotor and growth delay, severe intellectual disability, microcephaly, and hypoplastic corpus callosum. Additional reported manifestations include increased muscle tonus, seizures, cardiac anomalies, recurrent bronchopneumonia, camptodactyly, preauricular skin tag, and dysmorphic facial features (such as broad forehead, hypertelorism, flat nasal bridge, anteverted nostrils, and prominent ears), among others. |
Is a |
True |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| Disease with characteristics of delayed motor development, hypotonia and progressive neurodegeneration. To date, it has been described in four boys. The syndrome is caused by mutations affecting the two alleles of the HIBCH gene, encoding 3-hydroxyisobutyryl-CoA hydrolase which is caused by homozygous or compound heterozygous mutation in the HIBCH gene on chromosome 2q32. |
Is a |
False |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| A rare genetic disease characterized by the association of epilepsy, ataxia, sensorineural hearing impairment, and renal tubulopathy. Patients present in infancy with generalized seizures, cerebellar dysfunction (including gait ataxia, intention tremor, and dysdiadochokinesis), and variable developmental delay and sensorineural hearing loss. Laboratory studies show persistent hypokalemic metabolic acidosis with hypomagnesemia. Additional reported neurologic features include brisk deep tendon reflexes, ankle clonus, extensor plantar responses, or nystagmus. |
Is a |
False |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| A rare, genetic multisystem disorder characterized by a neurodegenerative disorder associating global developmental delay, progressive microcephaly, and progressive cerebral and cerebellar atrophy with extrapyramidal involvement, progressive optic atrophy, and in many patients early-onset steroid-resistant nephrotic syndrome. |
Is a |
True |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| A rare, genetic, multiple congenital anomalies syndrome characterized by growth retardation, alopecia, pseudoanodontia and ocular manifestations. |
Is a |
False |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| Severe X-linked mitochondrial encephalomyopathy is an extremely rare mitochondrial respiratory chain disease resulting in a neurodegenerative disorder characterized by psychomotor delay, hypotonia, areflexia, muscle weakness and wasting in the two patients reported to date. |
Is a |
False |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| A rare, genetic, X-linked syndromic intellectual disability disorder characterized by severe intellectual disability, microcephaly, post-natal growth retardation, severe visual impairment or blindness (due to optic atrophy), severe hearing defect, spasticity, epileptic seizures, restricted large-joint movements and early death (in infancy or early childhood). Facial dysmorphic features (large dysplastic ears and short broad nose) are additionally observed. There have been no further descriptions in the literature since 1993. |
Is a |
False |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| A rare syndromic agammaglobulinaemia characterised by profound B-cell depletion (with normal T-cell numbers) resulting in agammaglobulinaemia, associated with severe developmental delay, microcephaly, craniosynostosis, cleft palate, narrowing of the choanae, blepharophimosis, and severe dermatitis. Additional reported features include distal joint contractures, renal/genitourinary anomalies, and mild cerebral atrophy, among others. |
Is a |
False |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| Corpus callosum agenesis-intellectual disability-coloboma-micrognathia syndrome is a developmental anomalies syndrome characterized by coloboma of the iris and optic nerve, facial dysmorphism (high forehead, microretrognathia, low-set ears), intellectual deficit, agenesis of the corpus callosum (ACC), sensorineural hearing loss, skeletal anomalies and short stature. |
Is a |
True |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| A rare genetic disease characterized by bilateral Duane retraction syndrome type 3 (consisting of severe limitation of abduction, restriction of adduction, retraction of the globe, and narrowing of the palpebral fissure) and congenital myopathy manifesting as mild non-progressive hypotonia without muscular weakness, as well as delayed motor milestones, severe early-onset scoliosis, and short stature. Intelligence is normal. |
Is a |
True |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| Dystonia 16 (DYT16) is a very rare and newly discovered movement disorder which is characterized by early-onset progressive limb dystonia, laryngeal and oromandibular dystonia, and parkinsonism. |
Is a |
True |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| A rare, genetic, developmental defect during embryogenesis disorder characterized by varying degrees of caudal dysgenesis, ranging from a single umbilical artery or imperforate anus to full sirenomelia, in several members of the same family. Phenotype includes lumbosacral agenesis, anal atresia or ectopia, genitourinary abnormalities, components of VATER or VACTERL association, and facial dysmorphism (flat facies, abnormal ears, bilateral epicanthic folds, depressed nasal bridge, micrognathia). Additional features reported include cardiovascular (e.g. endocardial cushion defect, hypoplasia of pulmonary artery) and skeletal (kyphosis, hemipelvis) anomalies. |
Is a |
False |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| Infantile dystonia-parkinsonism (IPD) is an extremely rare inherited neurological syndrome that presents in early infancy with hypokinetic parkinsonism and dystonia and that can be fatal. |
Is a |
True |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| A rare X-linked syndromic intellectual disability characterized by intellectual impairment of variable severity, progressive lower limb spasticity, and diffuse palmoplantar hyperkeratosis. Additional manifestations include pes cavus, extensor plantar responses, hand tremor, and mild dysmorphic facial features. |
Is a |
True |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| Inherited autonomic nervous system disorder (disorder) |
Is a |
True |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| Facial onset sensory and motor neuronopathy is characterised initially by paraesthesia and numbness in the region of the trigeminal nerve distribution, which later progresses to involve the scalp, neck, upper trunk and upper limbs. Onset of motor manifestations occurs later with cramps, fasciculations, dysphagia, dysarthria, muscle weakness and atrophy. This syndrome has been described in four males and appears to be a slowly progressive neurodegenerative disease. |
Is a |
False |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| Ethylmalonic acid encephalopathy (EE) is defined by elevated excretion of ethylmalonic acid (EMA) with recurrent petechiae, orthostatic acrocyanosis and chronic diarrhea associated with neurodevelopmental delay, psychomotor regression and hypotonia with brain magnetic resonance imaging (MRI) abnormalities. |
Is a |
False |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| Endocrine-cerebro-osteodysplasia (ECO) syndrome is characterized by various anomalies of the endocrine, cerebral, and skeletal systems resulting in neonatal mortality. |
Is a |
True |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| Familial acute necrotising encephalopathy or ADANE is a potentially fatal neurological disease characterised by neuropathological lesions principally involving the brainstem, thalamus and putamen. |
Is a |
True |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| A rare developmental defect during embryogenesis characterized by macrostomia or abnormal mouth contour, preauricular tags or pits, and uni- or bilateral ptosis due to external ophthalmoplegia. This syndrome belongs to the oculoauriculovertebral spectrum, a developmental disorder affecting the structures derived from the first and second branchial arches. |
Is a |
True |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| Microlissencephaly-micromelia syndrome is a syndrome of abnormal cortical development, characterized by severe prenatal polyhydramnios, postnatal microcephaly, lissencephaly, upper limb micromelia, dysmorphic facies (coarse face, hypertrichosis, and short nose with long philtrum), intractable seizures, and early death. Hypoparathyroidism was noted in one case. |
Is a |
True |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| Microcephalic osteodysplastic dysplasia, Saul-Wilson type is a skeletal dysplasia characterised by a distinct facial phenotype, short stature, brachydactyly, clubfoot deformities, cataracts, and microcephaly. It has been described in four patients. Facial features include frontal bossing with a depression over the metopic suture, a narrow nasal root with a beaked nose, and midfacial hypoplasia with prominent eyes. Characteristic radiographic findings are observed (irregularities of the vertebral bodies, hypoplasia of the odontoid process, short phalanges, coning several epiphyses etc.). |
Is a |
False |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| A rare, genetic, syndromic intellectual disability disorder characterized by the association of nonprogressive spastic quadriparesis, retinitis pigmentosa, intellectual disability, and variable deafness. There have been no further descriptions in the literature since 1976. |
Is a |
True |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| A rare subtype of autosomal dominant cerebellar ataxia type 1 (ADCA type 1) characterized by the onset in infancy of cerebellar ataxia, neonatal hypotonia (in some), mild developmental delay and, in later life, intellectual disability. Less common features include dysarthria, dysmetria and dysmorphic facial features (long face, bulbous nose long philtrum, thick lower lip and pointed chin). |
Is a |
False |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| This rare neurologic disease is a slowly progressive Refsum-like disorder associating signs of peripheral neuropathy with late-onset hearing loss, cataract and pigmentary retinopathy that become evident during the third decade of life. |
Is a |
True |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| Renier Gabreels Jasper syndrome |
Is a |
False |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| Severe intellectual disability-epilepsy-anal anomalies-distal phalangeal hypoplasia is characterized by severe intellectual deficit, epilepsy, hypoplasia of the terminal phalanges, and an anteriorly displaced anus. It has been described in two sisters born to consanguineous parents. The syndrome is transmitted as an autosomal recessive trait and appears to be caused by anomalies in two chromosome regions, one localized to chromosome 1 and the other to chromosome 14. |
Is a |
True |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| A rare genetic disease characterized by the triad of adult-onset moderate to severe bilateral sensorineural hearing loss, premature graying of scalp hair, and essential tremor manifesting as involuntary shaking of the head. Additional pigmentation abnormalities have not been reported in this syndrome. |
Is a |
False |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| A rare, genetic, developmental defect during embryogenesis syndrome characterized by generalized keratosis follicularis, severe proportionate dwarfism and cerebral atrophy. Alopecia (of scalp, eyebrows and eyelashes) and microcephaly are additionally observed features. Intellectual disability, inguinal hernia and epilepsy may also be associated. There have been no further descriptions in the literature since 1974. |
Is a |
False |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| Kufor-Rakeb syndrome (KRS) is a rare genetic neurodegenerative disorder characterized by juvenile parkinsonism, pyramidal degeneration (dystonia), supranuclear palsy, and cognitive impairment. |
Is a |
True |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| A rare genetic, syndromic retinal disorder characterized by the association of retinitis pigmentosa, hypopituitarism, nephronophthisis, and skeletal dysplasia. |
Is a |
True |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| A rare systemic disease characterized by progressive hyalinosis involving capillaries, arterioles and small veins of the digestive tract, kidneys, and retina, associated with idiopathic cerebral calcifications, manifesting with severe diarrhea (with rectal bleeding and malabsorption), nephropathy (with renal failure and systemic hypertension), chorioretinal scarring, and subarachnoid hemorrhage. Poikiloderma and premature graying of the hair may be additionally observed. |
Is a |
False |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| A rare genetic neuromuscular disease characterized by early onset of proximal or generalized muscle weakness, external ophthalmoplegia with or without ptosis, and joint contractures. Hypotonia, neonatal respiratory distress necessitating ventilation, and severe dysphagia have also been reported. The disease is of variable severity and non- or slowly progressive. Patients typically remain ambulatory. Muscle biopsy may show predominance of type 1 fibers, marked variability in fiber size, increased internal nuclei, and proliferation of perimysial and endomysial connective tissue. |
Is a |
True |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| Posterior column ataxia - retinitis pigmentosa is characterized by the association of progressive sensory ataxia and retinitis pigmentosa. |
Is a |
False |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| A rare genetic cerebral small vessel disease characterized by amyloid deposition in the cerebral blood vessels leading to predominantly hemorrhagic strokes, focal neurological deficits, and progressive cognitive decline eventually leading to dementia. |
Is a |
True |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| Growth delay due to insulin-like growth factor I deficiency is characterized by the association of intrauterine and postnatal growth retardation with sensorineural deafness and intellectual deficit. |
Is a |
False |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| A rare genetic neurological disease characterized by silvery hair, profound dysfunction of central nervous system, abnormal melanocytes and melanosomes and abnormal inclusion bodies in fibroblast and other cells. |
Is a |
True |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| Moyamoya angiopathy - short stature - facial dysmorphism - hypergonadotropic hypogonadism is a very rare, hereditary, neurological, dysmorphic syndrome characterized by moyamoya disease, short stature of postnatal onset, and stereotyped facial dysmorphism. |
Is a |
True |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| Microcephalic primordial dwarfism due to ZNF335 deficiency is characterized by severe antenatal microencephaly, simplified gyration, agenesis of the corpus callosum, absence of basal ganglia (very rare), pontocerebellar atrophy and involvement of the white matter with secondary cerebral atrophy. Congenital cataract, choanal atresia, multiple arthrogryposis and spastic tetraparesis can occur. |
Is a |
True |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| McLeod neuroacanthocytosis syndrome (MLS) is a form of neuroacanthocytosis and is characterized clinically by a Huntington's disease-like phenotype with an involuntary hyperkinetic movement disorder, psychiatric manifestations and cognitive alterations, and biochemically by absence of the Kx antigen and by weak expression of the Kell antigens. |
Is a |
True |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| This syndrome is characterized by osteopetrosis, agenesis of the corpus callosum, cerebral atrophy and a small hippocampus. |
Is a |
True |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| A rare syndromic intellectual disability characterized by severe intellectual disability and calcification of the choroid plexus, associated with elevated cerebrospinal fluid protein concentration. Additional signs and symptoms include strabismus, increased deep tendon reflexes, and foot deformities, among others. There have been no further descriptions in the literature since 1993. |
Is a |
False |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| Hereditary hyperekplexia is a hereditary neurological disorder characterized by excessive startle responses. |
Is a |
False |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| A rare neurologic disease characterised by neonatal diabetes mellitus associated with cerebellar and/or pancreatic agenesis. Absence or hypoplasia of the cerebellum and severe intra-uterine growth retardation can be detected prenatally. Patients also present with facial dysmorphism (a triangular face, small chin, low set ears), flexion contractures of the arms and legs, very little subcutaneous fat, and optic nerve hypoplasia. The disease is lethal in the neonatal period. |
Is a |
True |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| A rare ARX-related epileptic encephalopathy characterized by infantile onset of myoclonic epilepsy with generalized spasticity, severe global developmental delay, and moderate to profound intellectual disability. Obligate female carriers show subtle, generalized hyperreflexia. Late onset progressive spastic ataxia has also been reported. |
Is a |
True |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| An adult-onset movement disorder characterized by bradykinesia, dysarthria and muscle rigidity. |
Is a |
False |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| A rare disorder characterized by a slowly progressive pure cerebellar ataxia associated with dysarthria. It has been described in 53 individuals from 26 families of Canadian origin. The mode of transmission is autosomal recessive. Positional cloning has led to the identification of several gene mutations. |
Is a |
False |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| A rare, severe, primary bone dysplasia characterized by intrauterine and postnatal growth retardation, microcephaly, facial dysmorphism, skeletal dysplasia, low-birth weight and brain anomalies. |
Is a |
False |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| A rare mitochondrial disease characterized by adult onset of progressive external ophthalmoplegia, exercise intolerance, muscle weakness, manifestations of spinocerebellar ataxia (e.g. impaired gait, dysarthria) and mild motor peripheral neuropathy. Respiratory insufficiency has been reported in some cases. |
Is a |
True |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| This syndrome is characterized by childhood-onset progressive ataxia and cerebellar atrophy. |
Is a |
False |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| A rare autosomal recessive cerebellar ataxia (ARCA), characterized by progressive cerebellar ataxia associated with frequent oculomotor apraxia, severe neuropathy and an elevated serum alpha-fetoprotein (AFP) level. |
Is a |
False |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| A disorder that is characterized by the association of a non-progressive congenital ataxia, severe intellectual deficit, optic atrophy and structural anomalies of the skin vessels. It has been described in five children from a large consanguineous Lebanese family. Short stature and microcephaly were also reported. Transmission is autosomal recessive. |
Is a |
False |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| Pyridoxal 5-phosphate dependent epilepsy (disorder) |
Is a |
True |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| A rare developmental defect during embryogenesis characterised by underdevelopment of the optic nerve with a subnormal number of optic nerve axons. The condition may be unilateral or bilateral and can occur as an isolated defect or accompany other ocular or cerebral abnormalities. Funduscopic examination reveals a small optic disc, often associated with the double-ring sign, a ring of hypo- or hyperpigmentation surrounding the disc. Clinically, vision may be severely impaired or remain unaffected. |
Is a |
False |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| Epileptic encephalopathy with global cerebral demyelination is a rare mitochondrial substrate carrier disorder characterized by severe muscular hypotonia, seizures (with or without episodic apnea) beginning in the first year of life, and arrested psychomotor development (affecting mainly motor skills). Severe spasticity with hyperreflexia has also been reported. Global cerebral hypomyelination is a characteristic imaging feature of this disease. |
Is a |
True |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| Cataract-congenital heart disease-neural tube defect syndrome is a multiple congenital anomaly syndrome characterized by sacral neural tube defects resulting in tethered cord, atrial and/or ventricular septal heart defects (that are detected in infancy), bilateral, symmetrical hyperopia, rapidly progressive early childhood cataracts, bilateral aphakic glaucoma, and abnormal facial features (low frontal hairline, small ears, short philtrum, prominent, widely spaced central incisors, and micrognathia). Hypotonia, growth and developmental delay, seizures, and joint limitation are also reported. |
Is a |
True |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
| A rare, genetic, multiple congenital anomalies/dysmorphic syndrome characterized by congenital, total, cortical blindness, intellectual disability, postaxial polydactyly of the hands and feet, pre- and postnatal growth delay, psychomotor developmental retardation, and mild facial dysmorphism (including prominent forehead, short nose, long philtrum, high-arched palate, and microretrognathia). Recurrent respiratory and intestinal infections, as well as moderate hypertonia and hyperreflexia, are also associated. There have been no further descriptions in the literature since 1985. |
Is a |
True |
Hereditary disorder of nervous system |
Inferred relationship |
Some |
|
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