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| X-linked intellectual disability-cubitus valgus-dysmorphism syndrome is characterized by moderate intellectual deficit, marked cubitus valgus, mild microcephaly, a short philtrum, deep-set eyes, downslanting palpebral fissures and multiple nevi. Less than ten individuals have been described so far. Transmission is thought to be X-linked recessive. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| An X-linked syndromic intellectual disability characterized by intellectual disability, subcortical cerebral atrophy, dental anomalies, patella luxation, lower back skin dimple, and dysmorphic facial features. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare genetic multiple congenital anomalies/dysmorphic syndrome characterized by moderate intellectual disability, dysmorphic facial features (such as prominent glabella, synophrys, and prognathism), generalized hirsutism, bilateral single palmar creases, and seizures. Additional reported manifestations include slowly progressive neurological deterioration with muscular weakness and impaired gait and balance, as well as hypogammaglobulinemia with specific absence of plasma and/or secretory IgA, among others. Brain imaging may show mild cerebellar atrophy and thin corpus callosum. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare, syndromic intellectual disability characterized by severe intellectual deficit, brachycephaly, plagiocephaly, and prominent forehead in male patients. Females may display moderate intellectual deficit without craniofacial dysmorphism. There have been no further descriptions in the literature since 1992. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| 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. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare genetic multiple congenital anomalies/dysmorphic syndrome characterized by global developmental delay, intellectual disability, growth retardation, hypotonia, cerebellar symptoms such as ataxia, spondyloepiphyseal dysplasia, and dysmorphic craniofacial features (including microcephaly, dolichocephaly, prominent ears, epicanthus, broad nasal bridge, long and flat philtrum, or small mouth). Additional reported manifestations are epilepsy, retinitis pigmentosa, and urogenital abnormalities, among others. Brain imaging may show cerebellar hypoplasia. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare multiple congenital anomalies/dysmorphic syndrome characterized by global developmental delay, intellectual disability, growth retardation, hearing impairment, characteristic facial dysmorphology (including prominent supraorbital ridges, downslanting palpebral fissures, deep-set eyes, long face, sagging cheeks, anteverted nares, and pointed chin), generalized hypotonia, joint hypermobility, gluteal crease with sacral caudal remnant and sacral dimple, and variable neurological features. Various ophthalmic, cutaneous, musculoskeletal, gastrointestinal, and cardiovascular anomalies have also been described. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| X-linked intellectual disability-hypogonadism-ichthyosis-obesity-short stature syndrome is a rare X-linked intellectual disability syndrome characterized by intellectual disability associated with short stature, obesity, primary hypogonadism and an ichthyosiform skin condition. There have been no further descriptions in the literature since 1982. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare, genetic, syndromic intellectual disability characterized by mild to severe intellectual disability associated with variable features, including hypotonia, dyskinesia, spasticity, wide-based gait, microcephaly, epilepsy and behavioral problems. MRI imaging may show a corpus callosum hypoplasia or ventricular enlargement. Other variable features, such as joint hyperlaxity, skin pigmentary abnormalities, and visual impairment, have also been reported. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| X-linked intellectual disability-limb spasticity-retinal dystrophy-diabetes insipidus syndrome is a rare genetic neurometabolic disease characterized by severe intellectual disability, spastic quadriparesis, Leber congenital amaurosis and diabetes insipidus. Additional manifestations include facial dysmorphy (dolichocephalic skull, hypertelorism, deep-set eyes, hypoplastic nares, low-set ears), short stature, truncal hypotonia and axial hypertonia. Brain anomalies (e.g. thin corpus callosum with lack of isthmus and tapered splenium, hypoplasia or atrophy of the optic chiasm, prominent lateral ventricles, diminished white matter), described on magnetic resonance imaging, have been reported. High prenatal alpha-fetoprotein and intrauterine growth restriction is observed in routine pregnancy examination. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| An X-linked syndromic intellectual disability characterized by intellectual disability, macrocephaly, macroorchidism, prominent eyebrows and jaws and abnormal ears. Males are predominantly affected, some females show lower cognitive abilities. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| X-linked intellectual disability-short stature-overweight syndrome is a multiple congenital anomalies syndrome characterised by borderline to severe intellectual disability, speech delay, short stature, elevated body mass index, a pattern of truncal obesity (reported in older males), and variable neurologic features (e.g. hypotonia, tremors, gait disturbances, behavioural problems, and seizure disorders). Less common manifestations include microcephaly, microorchidism and/or microphallus. Dysmorphic features have been reported in some patients but no consistent pattern has been noted. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare genetic disease characterized by congenital contractures of the distal interphalangeal joints, progressive stiffness of the shoulders and neck, keloid scarring, increased optic cup-to-disc ratio, and renal stones. Additional reported features include arthritis, osteoporosis, hypoplastic flexion creases, clinodactyly, anxiety, and facial dysmorphism (such as sloping forehead, prominent supraorbital ridges, downslanting palpebral fissures, prominent ears, and high arched palate). Female carriers exhibit a variable, milder phenotype. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| X-linked lethal multiple pterygium syndrome is a rare, genetic, developmental defect during embryogenesis characterized by 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 2nd or 3rd trimester) with an X-linked pattern of inheritance. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare genetic multiple congenital anomalies/dysmorphic syndrome characterized by lissencephaly, agenesis of the corpus callosum and other cerebral structural anomalies, early-onset intractable seizures, and ambiguous genitalia. Consequences of hypothalamic dysfunction, such as disturbed temperature regulation, may be observed. Additional anomalies including dysmorphic craniofacial features have been reported. The disease is fatal in infancy or childhood in males, while female carriers may be unaffected or show a milder phenotype with developmental delay, behavioral abnormalities, and seizures. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare, genetic, primary immunodeficiency disorder characterised by an abnormal immune response to Epstein-Barr virus (EBV) infection, caused by hemizygous mutations in the X-linked SH2D1A gene, resulting in B cell lymphoproliferation and manifesting with various phenotypes which include EBV-driven severe or fulminant mononucleosis, haemophagocytic lymphohistiocytosis (presenting with fulminant hepatitis, hepatic necrosis, bone marrow hypoplasia, and neurological involvement), hypogammaglobulinaemia, and B-cell lymphoma. Additional variable manifestations include vasculitis, lymphomatoid granulomatosis, aplastic anaemia, and chronic gastritis. Occasionally, T-cell lymphoma may be observed. Laboratory findings include normal or increased activated T cells and reduced memory B cells. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare, genetic, primary immunodeficiency disorder characterized by an abnormal immune response to Epstein-Barr virus (EBV) infection, caused by hemizygous mutations in the X-linked XIAP gene, resulting in B cell lymphoproliferation and manifesting with various phenotypes which include EBV-driven hemophagocytic lymphohistiocytosis, hypogammaglobulinemia, recurrent splenomegaly, hepatitis, colitis, and intestinal bowel disease with features of Crohn's disease. Additional manifestations include variable auto-inflammatory symptoms such as uveitis, arthritis, skin abscesses, erythema nodosum, and nephritis. Neurological involvement is rare, and lymphoma is never observed. Laboratory findings include normal or increased activated T cells, low or normal iNKT cells, and normal or reduced memory B cells. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| X-linked mandibulofacial dysostosis is an extremely rare multiple congenital abnormality syndrome that is characterised by microcephaly, malar hypoplasia with downslanting palpebral fissures, highly arched palate, apparently low-set and protruding ears, micrognathia, short stature, bilateral hearing loss, and learning disability. Occasionally, additional features have been observed such as bilateral cryptorchidism, cardiac valvular lesions, body asymmetry, and pectus excavatum. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| X-linked (XR) Mendelian susceptibility to mycobacterial diseases describes a rare group of immunodeficiencies due to specific mutations in the inhibitor of kappa light polypeptide gene enhancer in B-cells, kinase gamma (IKBKG) or the cytochrome b-245, beta polypeptide (CYBB) genes. They are characterized by mycobacterial infections, occurring in males. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| X-linked microcephaly-growth retardation-prognathism-cryptorchidism syndrome is a rare syndromic intellectual disability characterized by hypotonia, microcephaly, severe developmental delay, seizures, intellectual disability, growth retardation, cardiac septal defects, cryptorchidism, hypospadias, and dysmorphic features - prominent ears, prognathism, thin upper lip, dental crowding. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| X-linked myopathy with excessive autophagy is a childhood-onset X-linked myopathy characterized by slow progression of muscle weakness and unique histopathological findings. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| X-linked myotubular myopathy-abnormal genitalia syndrome is a rare chromosomal anomaly, partial deletion of the long arm of chromosome X, characterized by a combination of clinical manifestations of X-linked myotubular myopathy and a 46,XY disorder of sex development. Patients present with severe form of congenital myopathy and abnormal male genitalia. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| An X-linked syndromic intellectual disability characterized by congenital ataxia and generalized hypotonia, global developmental delay with intellectual disability, myoclonic encephalopathy, progressive neurological deterioration, macular degeneration, and recurrent bronchopulmonary infections. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| An X-linked syndromic intellectual disability characterized by a few months of normal development, followed by progressive neurodegenerative course with gradual loss of vision, development of spastic tetraplegia, convulsions, microcephaly, failure to thrive, and early death. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| X-linked non progressive cerebellar ataxia is a rare hereditary ataxia characterized by delayed early motor development, severe neonatal hypotonia, non-progressive ataxia and slow eye movements, presenting normal cognitive abilities and absence of pyramidal signs. Frequently patients also manifest intention tremor, mild dysphagia, and dysarthria. Brain MRI reveals global cerebellar atrophy with absence of other malformations or degenerations of the central and peripheral nervous systems. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare, genetic, neurological disorder characterized by parkinsonian features (including resting or action tremor, cogwheel rigidity, hypomimia and bradykinesia) associated with variably penetrant spasticity, hyperactive deep tendon reflexes and Babinski sign. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| X-linked reticulate pigmentary disorder is an extremely rare skin disease described in only four families to date and characterized in males by diffuse reticulate brown hyperpigmented skin lesions developing in early childhood and a variety of systemic manifestations (recurrent pneumonia, corneal opacification, gastrointestinal inflammation, urethral stricture, failure to thrive, hypohidrosis, digital clubbing, and unruly hair and flared eyebrows), while in females, there is only cutaneous involvement with the development in early childhood of localized brown hyperpigmented skin lesions following the lines of Blaschko. This disease was first considered as a cutaneous amyloidosis, but amyloid deposits are an inconstant feature. |
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| A rare genetic eye disease characterized by abnormal proliferation of retinal tissue resulting in the formation of retinal folds, thereby causing gliosis and, clinically, variable degrees of visual impairment. No clinical findings other than those associated with the eyes have been demonstrated. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| X-linked severe congenital neutropenia is an immunodeficiency syndrome characterized by recurrent major bacterial infections, severe congenital neutropenia, and monocytopenia. It has been described in five males spanning three generations of one family. It is transmitted as an X-linked recessive trait and is caused by mutations in the WAS gene, encoding the WASP protein. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
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| A rare syndromic, inherited form of sideroblastic anemia characterized by mild to moderate anemia (with hypochromia and microcytosis) and early-onset, non- or slowly progressive spinocerebellar ataxia. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare, X-linked leukodystrophy characterized primarily by spastic gait and autonomic dysfunction. When additional central nervous system (CNS) signs, such as intellectual deficit, ataxia, or extrapyramidal signs, are present, the syndrome is referred to as complicated SPG. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| X-linked spastic paraplegia type 34 is a pure form of hereditary spastic paraplegia characterized by late childhood- to early adulthood-onset of slowly progressive spastic paraplegia with spastic gait and lower limb hyperreflexia, brisk tendon reflexes and ankle clonus. Lower limb pain and reduced lower limb vibratory sense is also reported in some older adult patients. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| 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. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| X-linked spinocerebellar ataxia type 3 is a form of spinocerebellar degeneration characterized by onset in infancy of hypotonia, ataxia, sensorineural deafness, developmental delay, esotropia, and optic atrophy, and by a progressive course leading to death in childhood. It has been described in one family with at least six affected males from five different sibships (connected through carrier females). It is transmitted as an X-linked recessive trait. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare X-linked spinocerebellar ataxia characterized by ataxia, pyramidal tract signs and adult-onset dementia. The disease manifests during early childhood with delayed walking and tremor. The pyramidal signs appear progressively and by adulthood memory problems and dementia gradually become apparent. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare, genetic primary bone dysplasia disorder characterized by disproportionate short stature with mesomelic short limbs, leg bowing, lumbar lordosis, brachydactyly, joint laxity and a waddling gait. Radiographs show platyspondyly with central protrusion of anterior vertebral bodies, kyphotic angulation and very short long bones with dysplastic epiphyses and flared, irregular, cupped metaphyses. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare syndromic type of cerebral malformation characterized by aprosencephaly (absence of telencephalon and diencephalon), oculo-facial anomalies (i.e. ocular hypotelorism or cyclopia, malformation/absence of nasal structures, cleft lip), preaxial limb defects (i.e. hypoplastic hands, absent halluces) and various other anomalies including ambiguous genitalia, imperforate anus, and vertebral anomalies. The syndrome is thought to have an autosomal recessive mode of inheritance. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| 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. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| Xeroderma pigmentosum/Cockayne syndrome complex (XP/CS complex) is characterized by the cutaneous features of xeroderma pigmentosum (XP) together with the systemic and neurological features of Cockayne syndrome. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare chromosomal anomaly with characteristics of complex glycerol kinase deficiency, congenital adrenal hypoplasia, intellectual disability and/or Duchenne muscular dystrophy that usually affect males. The clinical features depend on the deletion size and the number and type of involved genes. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| Xq12-q13.3 duplication syndrome is a rare chromosomal anomaly syndrome, resulting from the partial duplication of the long arm of chromosome X, characterized by global developmental delay, autistic behavior, microcephaly and facial dysmorphism (including down-slanting palpebral fissures, depressed nasal bridge, anteverted nares, long philtrum, down-slanting corners of the mouth). Seizures have also been reported in some patients. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare, X-linked, multiple congenital anomalies/dysmorphic malformation-intellectual disability syndrome characterized by developmental delay, mild to moderate intellectual disability, speech disturbance, behavioral problems (such as anxiety, hyperactivity, and aggressiveness) and mild facial dysmorphism (including facial hypotonia, thin arched eyebrows, ectropion, epicanthus, malar flatness, thick vermillion of the lips and prognathia). Additional variable manifestations include short stature, skeletal and genital anomalies, seizures, and autism spectrum disorders. Brain imaging may reveal cerebellar vermis hypoplasia, thin corpus callosum, and enlarged subarachnoid spaces. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare, genetic, parkinsonian disorder characterized by an age of onset between 21-45 years, rigidity, painful cramps followed by tremor, bradykinesia, dystonia, gait complaints and falls, and other non-motor symptoms. A slow disease progression and a more pronounced response to dopaminergic therapy are also observed in most forms of this disease. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare mitochondrial disorder characterized by facial dysmorphism similar to that seen in Zellweger syndrome, such as frontal bossing, high forehead, upslanting palpebral fissures, hypoplastic supraorbital ridges, and epicanthal folds, and in addition, pale skin, profound hypotonia, developmental delay, and minor metabolic anomalies. No peroxisomal defects, however, have been reported. Transmission is thought to be autosomal recessive. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| NDE1-related microhydranencephaly is a rare, hereditary syndrome with a central nervous system malformation as major feature characterized by extreme microcephaly and growth restriction, severe motor delay and mental retardation, and typical radiological findings of gross dilation of the ventricles resulting from the absence (or severe delay in the development) of cerebral hemispheres, hypoplasia of the corpus callosum, cerebellum, and brainstem. Associated features are thin bones and scalp rugae. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
FHIR