| Inbound Relationships |
Type |
Active |
Source |
Characteristic |
Refinability |
Group |
| A rare autosomal dominant heart-hand syndrome that is characterized by bisymmetric brachydactyly accompanied by long thumbs, joint anomalies (restriction of motion at the shoulder and metacarpophalangeal joints) and cardiac conduction defects. Additional features include small hands and feet, clinodactyly, narrow shoulders with short clavicles, pectus excavatum and mild shortness of the limbs, cardiomegaly and murmur of pulmonic stenosis. There have been no new reports since 1981. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| Spastic paraplegia-glaucoma-intellectual disability syndrome is characterized by progressive spastic paraplegia, glaucoma and intellectual deficit. It has been described in two families. The second described sibship was born to consanguineous parents. The mode of inheritance is autosomal recessive. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| Triphalangeal thumb and dislocation of patella syndrome (disorder) |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare skeletal disorder characterized clinically by multiple fractures, wormian bones of the skull, dentinogenesis imperfecta and facial dysmorphism (hypertelorism, periorbital fullness). Although the signs are very similar to osteogenesis imperfecta, characteristic cortical defects in the absence of osteopenia and collagen abnormalities are considered to be distinctive. There have been no further descriptions in the literature since 1999. |
Is a |
False |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| Hypo- and hypermelanotic cutaneous macules-retarded growth-intellectual disability syndrome is a rare, genetic pigmentation anomaly of the skin disorder characterized by congenital hypomelanotic and hypermelanotic cutaneous macules associated with, in some patients, retarded growth and intellectual disability. There have been no further descriptions in the literature since 1978. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare intellectual disability syndrome characterized by intellectual deficit, marfanoid habitus, microcephaly, and glomerulonephritis. There have been no further reports since 1992. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare endocrine disease characterized by lentigines with a specific peri-orifical distribution, blue nevus, myxomas, various endocrine tumors including primary pigmented nodular adrenocortical disease (PPNAD), acromegaly, thyroid tumors, and a wide range of other tumors. |
Is a |
False |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| Megalocornea-intellectual disability syndrome is a rare intellectual disability syndrome most commonly characterized by megalocornea, congenital hypotonia, varying degrees of intellectual disability, psychomotor/developmental delay, seizures, and mild facial dysmorphism (including round face, frontal bossing, epicanthal folds, large low set ears, broad nasal base, anteverted nostrils, and long upper lip). Interfamilial and intrafamilial clinical variability has been reported. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| Microcephaly with or without chorioretinopathy, lymphedema or intellectual disability (MCLID) is a rare autosomal dominant condition characterized by variable expression of microcephaly, ocular disorders including chorioretinopathy, congenital lymphedema of the lower limbs, and mild to moderate intellectual disability. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare syndrome with 46,XY disorder of sex development characterized by mild developmental delay and streak gonads associated with short stature, cardiac, renal, musculoskeletal, and ectodermal abnormalities (the latter including scalp defects and unusual hair whorls), and dysmorphic facial features (such as preauricular pits, short columella, and small nares). There have been no further descriptions in the literature since 1980. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| syndrome de Summitt |
Is a |
False |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare disorder of sex development characterized by primary amenorrhea and ambiguous external genitalia (enlarged clitoris with marked fusion of the labioscrotal folds) in association with skeletal anomalies (such as hypoplasia of the mandibular condyles and the maxilla, and ulnar dislocation of the radial heads), in the presence of a 46,XX karyotype and regular ovaries, fallopian tubes, and uterus. There have been no further descriptions in the literature since 1972. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| An autosomal recessive form of serine deficiency. The infantile disease has clinical characteristics in the few reported cases of congenital microcephaly, psychomotor retardation and intractable seizures. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| Ectodermal dysplasia-intellectual disability-central nervous system malformation syndrome is a rare, multiple developmental anomalies syndrome characterized by the triad of ectodermal dysplasia (mostly hypohidrotic with dry skin and reduced sweating and sparse, fair scalp hair, eyebrows and eyelashes), severe intellectual disability and variable central nervous system anomalies (cerebellar hypoplasia, dilatation of ventricles, corpus callosum agenesis, Dandy-Walker malformation). Distinct craniofacial dysmorphism with macrocephaly, frontal bossing, midfacial hypoplasia and high arched or cleft palate, as well as cryptorchidism, feeding difficulties and hypotonia, are associated. There have been no further descriptions in the literature since 1998. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| Ectodermal dysplasia, trichoodontoonychial type is a form of ectodermal dysplasia with hair, teeth and nail involvement characterized predominantly by hypodontia, hypotrichosis, delayed hair growth and brittle nails. Additionally, focal dermal hypoplasia, irregular hyperpigmentation, hypoplastic or absent nipples, amastia, hearing impairment, congenital hip dislocation and asthma have been associated. There have been no further descriptions in the literature since 1996. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| Isolated congenital megalocornea is a genetic, non-syndromic developmental defect of the anterior eye segment characterized by bilateral enlargement of the corneal diameter (>12.5 mm) and a deep anterior eye chamber, without an elevation in intraocular pressure. It can manifest with mild to moderate myopia as well as photophobia and iridodonesis (due to iris hypoplasia). Associated complications include lens dislocation, retinal detachment, presenile cataract development, and secondary glaucoma. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| Renal coloboma syndrome (disorder) |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| Nance-Horan syndrome (disorder) |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| X-linked periventricular heterotopia (disorder) |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A genetic syndrome characterized by the absence of all four limbs. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| Desmosterolosis (disorder) |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| Bowen-Conradi syndrome (disorder) |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| KBG syndrome |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| MEGDEL syndrome is a rare, genetic, neurometabolic disorder characterised by neonatal hypoglycaemia, features of sepsis that are not linked to infection, development of feeding problems, failure to thrive, transient liver dysfunction, and truncal hypotonia followed by dystonia and spasticity which results in psychomotor development arrest and/or regression. Progressive sensorineural deafness, intellectual disability and absent speech are also associated. Laboratory tests demonstrate 3-methylglutaconic aciduria and temporary elevated serum lactate and transaminases. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A difference of sex development (DSD) distinct from complete AIS (CAIS) characterized by the presence of abnormal genital development in a 46,XY individual with normal testis development and partial responsiveness to age-appropriate levels of androgens. |
Is a |
False |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare, genetic, syndromic dysostosis characterized by bilateral, symmetrical, preaxial brachydactyly associated with hyperphalangy, motor developmental delay and intellectual disability, growth retardation, sensorineural hearing loss, dental abnormalities (including misalignment of teeth, talon cusps, microdontia), and facial dysmorphism that includes plagiocephaly, round face, hypertelorism, malar hypoplasia, malformed ears, microstomia and micro/retrognathia. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare, genetic, hematologic disorder characterized by bone marrow failure which manifests with aplastic anemia and/or myelodysplasia, associated with hearing/ear abnormalities (such as deafness, labyrinthitis), inherited in an autosomal dominant manner. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| FGFR2-related bent bone dysplasia is a rare, genetic, lethal, primary bone dysplasia characterized by dysmorphic craniofacial features (low-set, posteriorly rotated ears, hypertelorism, megalophthalmos, flattened and hypoplastic midface, micrognathia), hypomineralization of the calvarium, craniosynostosis, hypoplastic clavicles and pubis, and bent long bones (particularly involving the femora), caused by germline mutations in the FGFR2 gene. Prematurely erupted fetal teeth, osteopenia, hirsutism, clitoromegaly, gingival hyperplasia, and hepatosplenomegaly with extramedullary hematopoiesis may also be associated. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare, genetic multiple congenital anomalies/dysmorphic syndrome characterized by congenital microcephaly, severe epilepsy with hypsarrhythmia, adducted thumbs, abnormal genitalia, and normal thyroid function. Hypotonia, moderate to severe psychomotor delay, and characteristic facial dysmorphism (including round face with prominent cheeks, blepharophimosis, large, bulbous nose with wide alae nasi, posteriorly rotated ears with dysplastic conchae, narrow mouth, cleft palate, and mild micrognathia) are additional characteristic features. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare, genetic, ectodermal dysplasia syndrome characterized by persistent skin fragility which manifests with blistering and erosions due to minimal trauma, wooly hair with variable alopecia, hyperkeratotic nail dysplasia, diffuse or focal palmoplantar keratoderma with painful fissuring, and no cardiac abnormalities. Perioral hyperkeratosis may also be associated. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare complex hereditary spastic paraplegia characterized by an early onset hypotonia that progresses to spasticity, global developmental delay, severe intellectual disability and speech impairment, microcephaly, short stature and dysmorphic features. Patients often become non-ambulatory, and some develop seizures and stereotypic laughter. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| Microphthalmia-retinitis pigmentosa-foveoschisis-optic disc drusen syndrome is a rare, genetic, non-syndromic developmental defect of the eye disorder characterized by the association of posterior microphthalmia, retinal dystrophy compatible with retinitis pigmentosa, localized foveal schisis and optic disc drusen. Patients present high hyperopia, usually adult-onset progressive nyctalopia and reduced visual acuity, and, on occasion, acute-angle glaucoma. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare, genetic, systemic autoimmune disease characterized by failure to thrive, global developmental delay, distinctive craniofacial dysmorphism (relative macrocephaly, dolichocephaly, frontal bossing, orbital proptosis, flattened midface with a prominent occiput, low, posteriorly rotated ears, micrognathia), hepato- and/or splenomegaly, and multisystemic autoimmune disease involving the lungs, liver, gut and/or thyroid gland. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A form of hypotonia-cystinuria type 1 syndrome characterized by mild to moderate intellectual disability in addition to classic hypotonia-cystinuria syndrome phenotype (cystinuria type 1, generalized hypotonia, poor feeding, growth retardation, and minor facial dysmorphism). |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare, genetic, lethal, multiple congenital anomalies/dysmorphic syndrome characterized by failure to thrive, severe developmental delay, severe postnatal microcephaly, frequent congenital cardiac defects and characteristic facial dysmorphism (including coarse face with anteverted nostrils, thin vermillion, prominent alveolar ridge and retro- or micrognathia). Additional common features include neurologic abnormalities (hyper-/hypotonia, sensorineural deafness, hydrocephalus, cerebral atrophy, seizures), as well as brachydactyly, cutis marmorata and genital anomalies. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare genetic ocular disease characterized by congenital nystagmus (horizontal, vertical and/or torsional), foveal hypoplasia, presenile cataracts (with typical onset in the second to third decade of life), and normal irides. Corneal pannus and/or optic nerve hypoplasia may also be present. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| Brachytelephalangic chondrodysplasia punctata (BCDP) is a form of non-rhizomelic chondrodysplasia punctata, a primary bone dysplasia, characterized by hypoplasia of the distal phalanges of the fingers, nasal hypoplasia, epiphyseal stippling appearing in the first year of life, as well as mild and non-rhizomelic shortness of the long bones. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare, genetic, developmental defect during embryogenesis disorder characterized by 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. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare, genetic, non-syndromic, developmental defect during embryogenesis malformation syndrome characterized by a congenital, non-progressive, occipitofrontal head circumference that is 2 or more standard deviations below the mean for age, gender and ethnicity which is associated with normal brain architecture and uncomplicated by other abnormalities. Borderline to moderate intellectual disability, as well as early psychomotor delay, may or may not be associated. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare, genetic, non-syndromic pontocerebellar hypoplasia characterized by progressive cerebellum and brainstem atrophy, corpus callosum hypo-/aplasia and progressive post-natal microcephaly. Patients typically present profound global developmental delay, spastic tetraparesis, seizures, cortical visual impairment and, on neuroimaging, abnormal brain morphology that includes pontocerebellar hypoplasia, figure of 8 midbrain appearance, and, more variably, interhemispheric cysts, ventriculomegaly and cerebral dysmyelination. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare, genetic, primary immunodeficiency disorder characterized by severe congenital neutropenia, bone marrow fibrosis and neutrophil dysfunction which is refractory to granulocyte colony-stimulating factor, manifesting with life-threatening infections and/or deep-seated abscesses, hepato-/splenomegaly, thrombocytopenia, hypergammaglobulinemia, anemia with reticulocytosis and nephromegaly. Other reported features include osteosclerosis and neurological abnormalities (e.g. developmental delay, cortical blindness, hearing loss, thin corpus callosum or dysrhythmia on EEG). |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare syndromic microphthalmia characterized by bilateral, usually asymmetrical, microphthalmia associated typically with a unilateral coloboma, truncal obesity, borderline to mild intellectual disability, hypogenitalism and, more variably, nystagmus, cataracts and developmental delay. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare, genetic, pontocerebellar hypoplasia subtype characterized by severe psychomotor developmental delay, progressive microcephaly, progressive spasticity, seizures, and brain abnormalities consisting of mild atrophy of the cerebellum, pons and corpus callosum and cortical atrophy with delayed myelination. Patients may present dysmorphic facial features (high arched eyebrows, prominent eyes, long palpebral fissures and eyelashes, broad nasal root, and hypoplastic alae nasi) and an axonal sensorimotor neuropathy. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| Global developmental delay-lung cysts-overgrowth-Wilms tumor syndrome is a rare, genetic, overgrowth syndrome characterized by global developmental delay, macrosomia with subsequent somatic overgrowth, bilateral cystic lung lesions, congenital nephromegaly and bilateral Wilms tumor. Craniofacial dysmorphism includes macrocephaly, frontal bossing, large anterior fontanelle, mild hypertelorism, ear pit, flat nasal bridge, anteverted nares and mild micrognathia. Additional features may include brain and skeletal anomalies, enlarged protuberant abdomen, fat pads on dorsum of feet and toes, and rugated soles with skin folds, as well as umbilical/inguinal hernia and autistic behavior. |
Is a |
False |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare, genetic, vascular disease characterized by congenital dysfunction of smooth muscle throughout the body, manifesting with cerebrovascular disease, aortic anomalies, intestinal hypoperistalsis, hypotonic bladder, and pulmonary hypertension. Congenital mid-dilated pupils non-reactive to light associated with a large, persistent patent ductus arteriosus are characteristic hallmarks of the disease. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare, syndromic intellectual disability characterized by intellectual disability of various severity, hypotonia, feeding difficulties, dysmorphic features, autism and behavioral issues. Growth retardation, congenital heart anomalies, gastrointestinal and genitourinary defects have been rarely associated. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare, genetic, central nervous system malformation syndrome characterized by 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. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare, genetic, syndromic, sterol biosynthesis disorder affecting males characterized by skin manifestations, including collodion membrane, ichthyosis, and patchy hypo-pigmentary lesions, associated with severe neurological involvement (e.g. intellectual disability, delayed psychomotor development, seizures, hydrocephalus, cerebellar/corpus callosum hypoplasia, Dandy-Walker malformation, hypotonia) and craniofacial dysmorphism (large anterior fontanelle, telecanthus, hypertelorism, microphthalmia, prominent nasal bridge, low-set ears, micrognathia, cleft palate). 2,3 toe syndactyly, polydactyly, and kyphosis, as well as ophthalmic, cardiac and urogenital anomalies may also be associated. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare, genetic, central nervous system malformation syndrome characterized by 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. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare, genetic, eye disease characterized by foveal hypoplasia, optic nerve misrouting with an increased number of axons decussating at the optic chiasm and innervating the contralateral cortex, and posterior embryotoxon or Axenfeld anomaly (indicating anterior segment dysgenesis), in the absence of albinism. Patients present congenital nystagmus, decreased visual acuity, refractive errors and, occasionally, strabismus. Microphthalmia and retinochoroidal coloboma may also be associated. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare, genetic, syndromic intellectual disability disorder characterized by congenital, persistent microcephaly, low birth weight, short stature, childhood-onset seizures, global development delay, mild intellectual disability, and adolescent or young adult-onset diabetes mellitus. Gait ataxia, skeletal abnormalities, dorsocervical fat pad, and infantile cirrhosis may also be associated. Brain morphology is typically normal, although delayed myelination and hypoplastic brainstem have been reported. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare, genetic, neurometabolic disorder characterised by severe, progressive microcephaly, severe to profound global development delay, intellectual disability, seizures (typically tonic and/or myoclonic and frequently intractable), hyperekplexia, and axial hypotonia with appendicular spasticity, as well as hyperreflexia, dyskinetic quadriplegia, and abnormal brain morphology (cerebral atrophy with variable additional features including ventriculomegaly, pons and/or cerebellar hypoplasia, simplified gyral pattern and delayed myelination). Cortical blindness, feeding difficulties and respiratory insufficiency may also be associated. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare, genetic, vascular disorder characterized by severe aneurysmal dilatation, elongation, and tortuosity of the thoracic aorta, its branches and pulmonary arteries with stenosis at various typical locations, typically resulting in infantile demise. Variable associated features may include cutis laxa, long philtrum with thin vermillion border, hypertelorism, sagging cheeks, arachnodactyly, joint laxity and pectus deformities. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| High bone mass osteogenesis imperfecta is a rare, genetic, primary bone dysplasia disorder characterized by increased bone fragility, manifesting with multiple, childhood-onset, vertebral and peripheral fractures, associated with increased bone mass density on radiometric examination. Patients typically present normal or mild short stature and dentinogenesis, hearing, and sclerae are commonly normal. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare, genetic, primary bone dysplasia with decreased bone density disorder characterized by childhood-onset osteoporosis associated with recurrent, multiple, osteoporotic, long bone fractures and/or vertebral compression fractures, significant height loss in adulthood, low bone mineral density scores, and otherwise no other abnormalities. Heterozygote females may be unaffected or have a milder phenotype. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare, genetic, primary bone dysplasia with increased bone density disorder characterized by benign, isolated, calvarial thickening, presenting with prominent frontoparietal bones, a high forehead with ridging of the metopic and sagittal sutures, lateral frontal prominences, and facial dysmorphism comprising a flat nasal root and short, upturned nose. Increased intracranial pressure and cranial nerve entrapment are not associated. There have been no further descriptions in the literature since 1986. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| Primary microcephaly-epilepsy-permanent neonatal diabetes syndrome is a rare, genetic, neurologic disease characterized by congenital microcephaly, severe, early-onset epileptic encephalopathy (manifesting as intractable, myoclonic and/or tonic-clonic seizures), permanent, neonatal, insulin-dependent diabetes mellitus, and severe global developmental delay. Muscular hypotonia, skeletal abnormalities, feeding difficulties, and dysmorphic facial features (including narrow forehead, anteverted nares, small mouth with deep philtrum, tented upper lip vermilion) are frequently associated. Brain MRI reveals cerebral atrophy with cortical gyral simplification and aplasia/hypoplasia of the corpus callosum. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare, genetic, inborn error of branched-chain amino acid metabolism disorder, with a highly variable clinical and biochemical phenotype, typically characterized by mild to severe global developmental delay, elevated methylmalonic acid and, occasionally, lactic acid plasma levels, and chronic methylmalonic aciduria, which may be accompanied by elevation of additional organic or amino acids in urine (e.g. beta-alanine, methionine, 3-hydroxypropionic, 3-aminoisobutyric and/or 3-hydroxyisobutyric acid). Microcephaly, mild craniofacial dysmorphism, axial hypotonia, liver failure, and central nervous system abnormalities on MRI have also been reported. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare syndromic intellectual disability characterized by developmental delay and intellectual disability, learning and behavioral problems, short stature, thin and sparse hair, mild dysmorphic features, tapering fingers and later onset of scoliosis, obesity and cardiovascular problems (cardiomegaly and cardiomyopathy). Females have normal intelligence. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare, genetic, cerebral malformation characterized 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, generalized tonic-clonic) and variable (absent to moderate) developmental and/or intellectual delay. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare, genetic, primary bone dysplasia characterized by prenatal onset of disproportionate short stature, shortening of the limbs, congenital joint dislocations, micrognathia, posterior cleft palate, brachydactyly, short metacarpals and irregular size of the metacarpal epiphyses, supernumerary carpal ossification centers and dysmorphic facial features. In addition, hearing impairment and mild psychomotor delay have also been reported. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare, genetic disorder of thiamine metabolism and transport characterized by infantile spasms progressing to symptomatic generalized or partial seizures, severe global developmental delay, progressive brain atrophy, and bilateral thalamic and basal ganglia lesions. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare hemolytic anemia characterized by combination of neurologic features, such as psychomotor delay, seizures, variable movement disorders, and hemolytic anemia with stomatocytosis, resulting in cation-leaky erythrocytes, pseudohyperkalemia, hemolytic crises and hepatosplenomegaly. Cataracts are also a presenting feature. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| Brachydactyly-short stature-retinitis pigmentosa syndrome is a rare, genetic, congenital limb malformation syndrome characterized by mild to severe short stature, brachydactyly, and retinal degeneration (usually retinitis pigmentosa), associated with variable intellectual disability, developmental delays, and craniofacial anomalies. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare endocrine disease characterized by a miniature adult type of congenital adrenal hypoplasia (residual adrenal cortex is composed of a small amount of permanent adult cortex with normal structural organization), selective absence of pituitary luteinizing hormone in otherwise normal brain, and neonatal demise. Patients present with hypogonadotropic hypogonadism, hypoglycemia, seizures, encephalopathy and diabetes insipidus. There have been no further descriptions in the literature since 1988. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| Extensor tendons of finger anomalies is a rare, genetic, congenital limb malformation characterized by 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. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| Richieri Costa-da Silva syndrome is a rare, genetic, myotonic syndrome characterized by childhood onset of progressive and severe myotonia (with generalized muscular hypertrophy and progressive impairment of gait), short stature, skeletal abnormalities (including pectus carinatum, short, wedge-shaped thoracolumbar vertebrae, kyphoscoliosis, genu valgum, irregular femoral epiphyses), and mild to moderate intellectual deficiency. No facial dysmorphism nor joint limitation is associated. There have been no further descriptions in the literature since 1984. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare genetic multiple congenital anomalies/dysmorphic syndrome characterized by facial dysmorphism (mild eyelid ptosis, xanthelasma, anteverted nostrils, bifid nasal tip, short palate), severe muscle wasting and cachexia, retinitis pigmentosa, numerous lentigines and café-au-lait spots, as well as mild, soft tissue syndactyly. Additional features include nasal speech, chest asymmetry, pectus excavatum, genu varum, pes planus, and thyroid papillary carcinoma and diffuse enlargement. There has been no further description in the literature since 1984. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare syndromic primary bone dysplasia characterized by short ribs with a narrow chest and thoracic dysplasia, mild rhizomelic shortening of the limbs, communicating hydrocephalus, and developmental delay. There have been no further descriptions in the literature since 1987. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare primary bone dysplasia disorder characterized by a bell-shaped thorax, disproportionate short stature, pelvic hypoplasia, dislocatable radial heads and elongated distal fibulae. No acetabular spurs nor phalangeal cone-shaped epiphyses are present, and osseous manifestations tend to normalize with age. There have been no further descriptions in the literature since 1988. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare, genetic, dentin dysplasia disease characterized by 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. |
Is a |
False |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare, genetic, neurological disease characterized by association of macrocephaly, dysmorphic facial features and psychomotor delay leading to intellectual disability and autism spectrum disorder. Facial dysmorphism may include frontal bossing, hypertelorism, midface hypoplasia, depressed nasal bridge, short nose, and long philtrum. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| 46,XY gonadal dysgenesis-motor and sensory neuropathy syndrome is a rare, genetic, developmental defect during embryogenesis disorder characterized by partial (unilateral testis, persistence of Müllerian duct structures) or complete (streak gonads only) gonadal dysgenesis, usually manifesting with primary amenorrhea in individuals with female phenotype but 46,XY karyotype, and sensorimotor dysmyelinating minifascicular polyneuropathy, which presents with numbness, weakness, exercise-induced muscle cramps, sensory disturbances and reduced/absent deep tendon reflexes. Germ cell tumors (seminoma, dysgerminoma, gonadoblastoma) may develop from the gonadal tissue. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare, genetic, developmental defect during embryogenesis disorder characterized by 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. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare, genetic, multiple congenital anomalies/dysmorphic syndrome characterized by the association of short stature and progressive discrete subaortic stenosis. Additional variable manifestations include upturned nose, voice and vocal cord abnormalities, obstructive lung disease, inguinal hernia, kyphoscoliosis and, occasionally, epicanthus, strabismus, microphthalmos and widely spaced teeth. There have been no further descriptions in the literature since 1984. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare, genetic, multiple congenital anomalies/dysmorphic syndrome characterized by craniofacial dysmorphism (midface hypoplasia, depressed nasal bridge, small nose with upturned tip, cleft palate, Pierre Robin sequence), bilateral, pronounced sensorineural hearing loss, and skeletal/joint anomalies (including spondyloepiphyseal dysplasia, arthralgia/arthropathy), in the absence of ocular abnormalities. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare, genetic, primary immunodeficiency disorder characterized by increased radiosensitivity(R), mild immunodeficiency (ID), dysmorphic features (D), and learning difficulties (LE). |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare, genetic, polymalformative syndrome characterized by a Noonan-like phenotype associated with increased risk of developing juvenile myelomonocytic leukemia (JMML). The Noonan-like (NS) phenotype includes dysmorphic facial features (i.e. high forehead, hypertelorism, downslanting palpebral fissures, ptosis, low-set ears, prominent philtrum and short neck with or without pterygium colli), developmental delay, hypotonia and small head circumference. It can be associated with congenital heart defects or cardiomyopathy, ectodermal anomalies, and short stature. The NS phenotype is subtle or even inapparent in a large proportion of subjects but may occasionally be severe. Leukemia can be the only clinical manifestation of the syndrome. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| Holzgreve syndrome is an extremely rare, lethal, multiple congenital anomalies/dysmorphic syndrome characterized by renal agenesis with Potter sequence, cleft lip/palate, oral synechiae, cardiac defects, and skeletal abnormalities including postaxial polydactyly. Intestinal nonfixation and intrauterine growth restriction are also associated. There have been no further descriptions in the literature since 1988. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| Glaucoma secondary to spherophakia/ectopia lentis and megalocornea is a rare, genetic, non-syndromic developmental defect of the eye disorder characterized by congenital megalocornea associated with spherophakia and/or ectopia lentis leading to pupillary block and secondary glaucoma. Additional features may include flat irides, iridodonesis, axial myopia, very deep anterior chambers, miotic, oval pupils without well-defined borders, ocular pain and irritability manifesting as conjunctival injection, corneal edema and central scarring, as well as a high arched palate. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| Hereditary isolated aplastic anemia is a rare, genetic, constitutional aplastic anemia disorder characterized 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. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare, genetic, congenital limb malformation syndrome characterised by a unique combination of bilateral, symmetrical camptodactyly and clinodactyly of 5th fingers, mesoaxial camptodactyly of toes, and ulnar deviation of 3rd fingers. Additional variable manifestations include bifid toes and severe syndactyly, or synpolydactyly, involving all digits of hands and feet. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| Reunion Island Larsen-like syndrome |
Is a |
False |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare, genetic, X-linked syndromic intellectual disability disorder characterized by moderate to severe intellectual disability associated with epilepsy, short stature, autistic features and behavioral problems, such as self-injury and aggressive outbursts. Observed facial dysmorphism includes brachycephaly, prominent supraorbital ridges, and deep set eyes. Additional variable manifestations include malposition of feet, asthenic habitus, hyporeflexia, bowel occlusions, hydronephrosis, ren arcuatus, delayed motor development and disturbed sleep-wake cycle. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare, genetic, multiple congenital anomalies/dysmorphic syndrome characterized by the triad: congenital, bilateral, symmetrical, subtotal, external auditory canal atresia, bilateral vertical talus and increased interocular distance. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A heterogeneous group of disorders associated with walking and growth disturbances that become evident during the second year of life. Characteristics are platyspondyly (flattened vertebrae) and marked hip and knee metaphyseal lesions. The different forms of spondylometaphyseal dysplasia are distinguished by the localization and severity of involvement of the affected metaphyses. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A primary bone dysplasia disorder that encompasses a group of congenital anomalies that are characterised by skeletal dysplasia of varying clinical severity and an X linked dominant pattern of inheritance. This group includes otopalatodigital syndrome type 1 and 2 (OPD1, OPD2) which are characterised in affected males by cleft palate, conductive hearing loss, craniofacial abnormalities and skeletal dysplasia; Melnick-Needles syndrome (MNS) which displays skeletal deformities in females and embryonic or perinatal lethality in most males; frontometaphyseal dysplasia (FMD); and terminal osseous dysplasia - pigmentary defects. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare, genetic, non-syndromic cerebral malformation due to abnormal neuronal migration disease characterized by the association of cortical dysplasia and pontocerebellar hypoplasia, manifesting with global developmental delay, mild to severe intellectual disability, axial hypotonia, strabismus, nystagmus and, occasionally, optic nerve hypoplasia. Brain imaging reveals variable malformations, including frontally predominant microgyria, gyral disorganization and simplification, dysmorphic and hypertrophic basal ganglia, cerebellar vermis dysplasia, brainstem/corpus callosum hypoplasia, and/or olfactory bulbs agenesis. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare, genetic, dermis disorder characterized by bilateral, fairly symmetrical, antecubital webbing extending from distal third of humerus to proximal third of forearm, associated with musculoskeletal abnormalities (i.e. 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 manifesting with moderate to severe elbow extension and supination limitation. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare, genetic, cobblestone lissencephaly disease characterized by 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. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare, genetic, multiple congenital anomalies/dysmorphic syndrome characterized by severe global developmental delay, hypotonia, and early-onset seizures, associated with multiple congenital anomalies, such as cardiac (e.g. patent foramen ovale, atrial septal defect, patent ductus arteriosus), genitourinary (i.e. hydrocele, renal collecting system dilatation, hydroureter, hydronephrosis, hypertrophic trabecular urinary bladder) and gastrointestinal abnormalities (including gastroesophageal reflux, anal stenosis, imperforate anus, ano-vestibular fistula), as well as facial dysmorphism which includes coarse facies, a prominent occiput, bitemporal narrowing, epicanthal folds, hypertelorism, nystagmus/strabismus/wandering eyes, low-set, large ears with auricle abnormalities, depressed nasal bridge, upturned nose, long philtrum, large, open mouth with thin lips, high-arched palate, and micro/retrognathia. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare, X-linked, syndromic intellectual disability disease characterized by neonatal hypertonia which evolves to hypotonia and an exaggerated startle response (to sudden visual, auditory or tactile stimuli), followed by the development of early-onset, frequently refractory, tonic or myoclonic seizures. Progressive epileptic encephalopathy, intellectual disability, and psychomotor development arrest, with subsequent decline, may be additionally associated. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare, genetic, systemic disease characterized by the presence of arterial aneurysms, tortuosity and dissection throughout the arterial tree, associated with early-onset osteoarthritis (predominantly affecting the spine, hands and/or wrists, and knees) and mild craniofacial dysmorphism (including long face, high forehead, flat supraorbital ridges, hypertelorism, malar hypoplasia and, anomalies of the palate and uvula), as well as mild skeletal and cutaneous anomalies. Joint abnormalities, such as osteochondritis dissecans and intervertebral disc degeneration, are frequently associated. Additional cardiovascular anomalies may include mitral valve defects, congenital heart malformations, ventricular hypertrophy and atrial fibrillation. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare, genetic syndromic intellectual disability characterized by developmental delay, mild to severe intellectual disability, facial features (bulbous nasal tip, and macroglossia, macrostomia, or open mouth appearance) and a wide spectrum of other nonspecific variable clinical features. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare, genetic, syndromic intellectual disability disease characterized by global developmental delay, microcephaly, mild to moderate intellectual disability, truncal ataxia, trunk and limb, or generalized, choreiform movements, and elevated serum creatine kinase levels. Variably associated features include mild cerebral atrophy, muscular weakness or hypotonia in early childhood, and/or seizures. Ocular abnormalities (e.g. exophoria, anisometropia, amblyopia) have been reported. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare, genetic, syndromic intellectual disability disorder characterized by variable degrees of intellectual disability, behavioral problems (including attention deficit and hyperactivity disorder, autism spectrum disorder, and aggressiveness), an altered sleeping pattern, and delayed speech and language development associated with disruption of ankyrin-3 (ANK3 gene). Additional features observed may include muscular hypotonia and spasticity. Epilepsy, chronic hunger, and dysmorphic facial features have been reported. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| Muenke syndrome is a syndromic craniosynostosis with significant phenotypic variability, usually characterized by coronal synostosis, midfacial retrusion, strabismus, hearing loss and developmental delay. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| A rare congenital nose and cavum anomaly characterized by clefting of the nose ranging from a minimally noticeable groove in the columella to complete clefting of the underlying bones and cartilage (resulting in two half noses) with a usually adequate airway. Bifid nose may be seen in frontonasal dysplasia; other malformations such as hypertelorbitism and midline clefts of the lip may also be associated. |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| Osteopetrosis |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| Congenital ichthyosis of skin |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
| Albinism |
Is a |
True |
Developmental hereditary disorder |
Inferred relationship |
Some |
|
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