| Inbound Relationships |
Type |
Active |
Source |
Characteristic |
Refinability |
Group |
| A rare chromosomal anomaly comprising variable parts of chromosome 8. The phenotype of mosaic or non-mosaic supernumerary r(8)/mar(8) ranges from almost normal to variable degrees of minor abnormalities, and growth and mental retardation overlapping with the well-known mosaic trisomy 8 syndrome. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| An autosomal anomaly with characteristics of variable clinical features, most commonly including developmental delay, some degree of intellectual disability, facial dysmorphism, microcephaly, congenital heart anomalies and variable genital, limb and skeletal anomalies. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| Mosaic trisomy 14 is a rare chromosomal anomaly disorder, with a highly variable phenotype, principally characterized by growth and developmental delay, intellectual disability, body asymmetry/hypotonia, congenital heart defects, genitourinary abnormalities (cryptorchidism, micropenis, large clitoris, labial swelling), and abnormal skin hyperpigmentation. Patients usually present with craniofacial dysmorphism such as microcephaly, abnormal palpebral fissure, hypertelorism, ear abnormalities, broad nose, low-set ears, micro/retro-gnathia, and cleft or highly arched palate. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| A rare partial duplication of the long arm of chromosome 14 with characteristics of variable clinical features, most commonly including growth retardation and low birth weight, hypotonia, developmental delay, intellectual disability, short stature, microcephaly, facial dysmorphism (frontal bossing, hypertelorism, bulbous nose, micrognathia, sparse hair and eyebrows), congenital heart defects, spasticity and hyperreflexia. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| 14q11.2 microduplication syndrome is a rare chromosomal anomaly characterized by developmental delay, mild to severe intellectual disability with speech impairment and epilepsy. Additionally, it may include dysmorphic features (such as hypo- or hypertelorism, dysplastic ears, short palpebral fissures), microcephaly or macrocephaly, behavioral abnormalities, stereotyped hand movements, ataxia, hypotonia, cleft palate. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| 14q12 microdeletion syndrome is a recently described syndrome characterized by severe intellectual deficit, with a normal neonatal period, followed by a phase of regression at the age of 3-6 months. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| Distal monosomy 14q is a rare chromosomal anomaly associated with various phenotypic features depending on the size of the deletion. The clinical features may include global developmental delay, hypotonia, congenital heart defects, dysmorphic features (high forehead, small palpebral fissures, epicanthi, blepharophimosis, broad and flat nasal bridge, broad philtrum, thin upper lip, high arched palate, pointed chin, malformed ears). High-pitched, weak cry, seizures and various dental and ophthalmological anomalies were also reported. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| 14q partial proximal trisomy syndrome (disorder) |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| Mosaic trisomy 5 is a rare chromosomal anomaly syndrome with a variable phenotype ranging from clinically normal to patients presenting intrauterine growth retardation, congenital heart anomalies (mainly ventricular septal defect), multiple dysmorphic features (e.g. hypertelorism, prominent nasal bridge) and other congenital anomalies (including eventration of diaphragm, agenesis of corpus callosum, cloverleaf skull, clinodactyly, anteriorly placed anus). Psychomotor development may be normal in spite of low growth parameters being associated. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| Tetrasomy 5p is a rare chromosomal anomaly syndrome with variable phenotype principally characterized by developmental delay, growth retardation/short stature, hypotonia, seizures, ventriculomegaly, hand and foot anomalies (e.g. clinodactyly, overlapping toes) and mosaic pigmentary skin changes. Patients may also present minor dysmorphic craniofacial features (including macrocephaly, upslanting palpebral fissures, hypertelorism, abnormal auricles, anteverted nasal tip, midface hypoplasia). |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| The newly described 5q35 microduplication syndrome is associated with microcephaly, short stature, developmental delay and delayed bone maturation. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| Distal trisomy 5q is a rare chromosomal anomaly syndrome, resulting from a partial duplication of the long arm of chromosome 5, characterized by short stature, moderate intellectual disability, and craniofacial dysmorphism (microcephaly, flat facies, large, low-set dysplastic ears, down-slanted, almond-shaped palpebral fissures, hypertelorism, epicanthal folds, small nose, long philtrum, small mouth with thin upper lip, and micrognathia). Patients also frequently present speech and cognitive delay, cardiac (ventriculomegaly, ventricular septum defect) and skeletal abnormalities (craniosynostosis, radial agenesis, ulnar hypoplasia, brachydactyly) and genital malformations (hypospadias, cryptorchidism). |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| 5p partial monosomy syndrome |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| 5q31.3 microdeletion syndrome (disorder) |
Is a |
False |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| The newly described 5q14.3 microdeletion syndrome includes severe intellectual deficit with no speech, stereotypic movements and epilepsy. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| 5q22.2 deletion syndrome |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| 22q11 partial monosomy syndrome |
Is a |
False |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| Xp22.3 microdeletion syndrome is a microdeletion syndrome resulting from a partial deletion of the chromosome X. Phenotype is highly variable (depending on length of deletion), but is mainly characterized by X linked ichthyosis, mild-moderate intellectual deficit, Kallmann syndrome, short stature, chondrodysplasia punctata and ocular albinism. Epilepsy, attention deficit-hyperactivity disorder, autism and difficulties with social communication can be associated. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| A rare chromosomal anomaly syndrome, resulting from the partial deletion of the short arm of chromosome X, principally characterized by classical Norrie disease (bilateral, severe retinal malformations and opacity of the lens leading to congenital blindness, on occasion associated with progressive sensorineural deafness and intellectual disability), microcephaly, hypotonia, psychomotor and growth delay, moderate to severe mental handicap and disruptive behavior. Clinical phenotype is highly variable and immunodeficiency, epilepsy and hypogonadism have also been reported. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| A microdeletion occurring on the short (p) arm of chromosome 16 at a location designated p12.2. Common characteristics of this disease include developmental delay, delayed speech, intellectual disability, hypotonia, short stature, microcephaly, cardiac malformations, recurrent epilepsy, psychiatric and behavioral problems. Manifestations vary even among affected members of the same family. Inherited in an autosomal dominant pattern with incomplete penetrance, in almost all known cases the chromosomal change has been inherited from a parent |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| 16p13.11 microdeletion syndrome is a recently described syndrome characterized by developmental delay, microcephaly, epilepsy, short stature, facial dysmorphism and behavioral problems. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| 49,XXXYY syndrome is a rare gonosome anomaly syndrome characterized by a eunuchoid habitus with gynecoid fat distribution and shape, normal to tall stature, moderate to severe intellectual disability, distinctive facial features (e.g. prominent forehead, epicanthic folds, broad nasal bridge, prognathism), gynecomastia, hypogonadism, cryptorchidism, small penis and behavioral abnormalities (including solitary, passive disposition but prone to aggressive outbursts, autistic). Skeletal malformations, such as delayed bone age, fifth finger clinodactyly, elbow malformations and slow molar development, may also be associated. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| Xq27.3q28 duplication syndrome is a recently described syndrome characterized by short stature, hypogonadism, developmental delay and facial dysmorphism. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| An X-linked retinal dystrophy characterized by choroideremia, causing in affected males progressive nyctalopia and eventual central blindness. Obesity, moderate intellectual disability and congenital mixed (sensorineural and conductive) deafness are also observed. Female carriers show typical retinal changes indicative of the choroideremia carrier state. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| Familial and de novo recurrent Xp11.22-p11.23 microduplication has been recently identified in males and females. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| Distal monosomy 7q36 is a rare chromosomal anomaly syndrome, resulting from a partial deletion of the long arm of chromosome 7, with a highly variable phenotype typically characterized by holoprosencephaly, growth restriction, developmental delay, facial dysmorphism (facial clefts, prominent forehead, hypertelorism, low-set ears, flat and broad nasal bridge, large mouth), abnormal fingers and palm or sole creases, ocular abnormalities, and other congenital malformations (including genital anomalies and caudal deficiency sequence). Cardiopathies have been occasionally reported. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| 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. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| A sex chromosome aneuploidy where males receive an additional Y chromosome, and with clinical characteristics of tall stature evident from childhood, macrocephaly, facial features (mild hypertelorism, low set ears, a mildly flat malar region), speech delay and an increased risk for social and emotional difficulties, attention deficit hyperactive disorder and autistic spectrum disorder. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| A rare Y chromosome number anomaly that affects only males and is characterized by mild-moderate developmental delay (especially speech), normal to mild intellectual disability, large, irregular teeth with poor enamel, tall stature and acne. Radioulnar synostosis and clinodactyly have also been associated. Boys generally present normal genitalia, while hypogonadism and infertility are frequently reported in adult males. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| A rare Y chromosome number anomaly with a variable phenotype mainly characterized by moderate to severe intellectual disability, speech delay, hypotonia, and mild dysmorphic features, including facial asymmetry, hypertelorism, bilateral low set lop ears, and micrognathia. Skeletal abnormalities (such as skull deformities, radioulnar synostosis, elbow flexion, clinodactyly, brachydactyly) and behavioral problems have also been associated with this condition. Genitalia are normal at birth, although hypogonadism and azoospermia has been reported in adults. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| A recurrent subtelomeric deletion syndrome with variable clinical manifestations including intellectual deficit and dysmorphic features. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| A rare partial autosomal microdeletion syndrome characterized by neonatal hypotonia, prenatal and postnatal growth deficiency, severe feeding difficulties, global developmental delay and intellectual disability, dental anomalies (delayed tooth eruption, delayed loss of primary teeth, dental crowding), recurrent respiratory infections, thrombocytopenia and facial dysmorphism (flat facial profile, medially sparse eyebrows, epicanthal folds, flat nasal bridge and tip, short philtrum). Behavioral abnormalities (ADHD, Asperger syndrome) have also been reported. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| 3q13 microdeletion syndrome is a rare chromosomal anomaly syndrome resulting from a partial deletion of the long arm of chromosome 3. Phenotype can be highly variable, but it is primarily characterized by significant developmental delay, postnatal growth above the mean, muscular hypotonia and distinctive facial features (such as broad and prominent forehead, hypertelorism, epicanthic folds, ptosis, short philtrum, protruding lips with a full lower lip, high arched palate). Abnormal hypoplastic male genitalia and skeletal abnormalities are frequently present. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| 6p22 microdeletion syndrome is a newly described syndrome associated with a variable clinical phenotype including developmental delay, facial dysmorphism, short neck and diverse malformations. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| 17q23.1q23.2 microdeletion syndrome is a recently described syndrome characterized by developmental delay, microcephaly, short stature, heart defects and limb abnormalities. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| 17q12 microdeletion syndrome is a rare chromosomal anomaly syndrome resulting from the partial deletion of the long arm of chromosome 17 characterized by renal cystic disease, maturity onset diabetes of the young type 5, and neurodevelopmental disorders, such as cognitive impairment, developmental delay (particularly of speech), autistic traits and autism spectrum disorder. Mullerian aplasia in females, macrocephaly, mild facial dysmorphism (high forehead, deep set eyes and chubby cheeks) and transient hypercalcemia have also been reported. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| A rare chromosomal anomaly syndrome, resulting from the partial deletion of the short arm of chromosome 12, characterised by intellectual disability, global developmental delay with prominent language impairment, behavioural abnormalities and mild facial dysmorphism (including frontal bossing, downslanting palpebral fissures, epicanthal folds, broad, depressed nasal bridge with bulbous nasal tip, low-set ears with underdeveloped helices). Other associated features may include skeletal abnormalities (butterfly vertebrae, scoliosis), strabismus, optic nerve hypoplasia, and brain malformations. |
Is a |
False |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| A partial autosomal monosomy characterized by variable combination of developmental delay, intellectual disability, ectodermal, genitourinary and minor cardiac anomalies, and specific dysmorphic features (prominent forehead and low-set ears). Specific combination depends on the size and breakpoints of deleted regions. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| Distal monosomy 15q is a rare chromosomal anomaly syndrome characterized by pre- and postnatal growth restriction, developmental delay, variable degrees of intellectual disability, hand and foot anomalies (e.g. brachy-/clinodactyly, talipes equinovarus, nail hypoplasia, proximally placed digits) and mild craniofacial dysmorphism (including microcephaly, triangular face, broad nasal bridge, micrognathia). Neonatal lymphedema, heart malformations, aplasia cutis congenita, aortic root dilatation, and autistic spectrum disorder have also been reported. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| 15q14 microdeletion syndrome is a recently described syndrome characterized by developmental delay, short stature and facial dysmorphism. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| 15q24 microdeletion |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| Mosaic trisomy 15 is a rare chromosomal anomaly syndrome principally characterized by intrauterine growth restriction, congenital cardiac anomalies (including ventricular and atrial septal defects, patent ductus arteriosus) and craniofacial dysmorphism (including hypertelorism, downslanting palpebral fissures, wide nasal bridge). Patients also present brain (e.g. hypoplastic cerebellum, ventricular asymmetry), renal (e.g. small dysplastic kidneys), and/or genital (undescended testis, small penis, hypoplastic labia majora) anomalies. Digital and skin pigmentation abnormalities have also been reported. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| 16p13.3 microduplication syndrome is a rare chromosomal anomaly syndrome resulting from a partial duplication of the short arm of chromosome 16 and manifesting with a variable phenotype which is mostly characterized by: mild to moderate intellectual deficit and developmental delay (particularly speech), normal growth, short, proximally implanted thumbs and other hand and feet malformations (such as camptodactyly, syndactyly, club feet), mild arthrogryposis and characteristic facies (upslanting, narrow palpebral fissures, hypertelorism, mid face hypoplasia, bulbous nasal tip and low set ears). Other reported manifestations include cryptorchidism, inguinal hernia and behavioral problems. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| Distal trisomy 16q is a rare chromosomal anomaly syndrome, resulting from the partial trisomy of the long arm of chromosome 16, with variable phenotype principally characterized by developmental delay, severe intellectual disability, hypotonia, facial dysmorphism (including high, prominent forehead, epicanthic folds, dysplastic ears, broad/depressed nasal bridge, malar hypoplasia, narrow and arched palate, thin upper lip vermilion, micrognathia) and hand/feet anomalies (e.g. arachnodactyly, talipes equinovarus). Cardiac defects, genitourinary malformations and vertebral anomalies are also associated. Thrombocytopenia and recurrent infections have also been reported. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| 2q31.1 microdeletion syndrome is a well-defined and clinically recognisable syndrome characterized by moderate to severe developmental delay, short stature, facial dysmorphism and variable limb defects. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| 2q33.1 microdeletion syndrome (disorder) |
Is a |
False |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| A rare autosomal monosomy characterized by a variable phenotype with moderate to severe intellectual disability, behavioral problems, short stature, microcephaly, dysplastic nails, sparse hair, cleft palate and dysmorphic craniofacial features. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| 2p21 microdeletion syndrome without cystinuria is a rare partial autosomal monosomy characterized by weak fetal movements, severe infantile hypotonia and feeding difficulties that spontaneously improve with time, urogenital abnormalities (hypospadias or hypoplastic labia majora), global development delay, mild intellectual disability and facial dysmorphism (dolichocephaly, frontal bossing, bilateral ptosis, midface retrusion, open mouth with tented upper lip vermilion). Affected individuals have borderline elevated serum lactate but no cystinuria. |
Is a |
False |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| The 2p21 microdeletion syndrome consists of cystinuria, neonatal seizures, hypotonia, severe growth and developmental delay, facial dysmorphism, and lactic acidemia. |
Is a |
False |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| Tetrasomy 12p syndrome (disorder) |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| A rare autosomal anomaly defined by the presence of three copies of chromosome 8 in some cells of the body, and clinically characterized by facial dysmorphism, typically deep palmar and plantar creases, mild intellectual deficit and joint, urinary, cardiac and skeletal anomalies. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| Mosaic trisomy 12 is a rare chromosomal anomaly syndrome, with a highly variable phenotype, principally characterized by developmental or growth delay, short stature, craniofacial dysmorphism (e.g. turricephaly, tall forehead, downslanting palpebral fissures, posteriorly rotated and low set ears, narrow palate), congenital heart defects (e.g. atrial septal defect, patent ductus arteriosus), hypotonia, and pigmentary dysplasia. Scoliosis, hearing loss, facial/body asymmetry, and intellectual disability have also been reported. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| Mosaic trisomy 16 syndrome |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| Mosaic trisomy 17 is a rare chromosomal anomaly syndrome, with a highly variable clinical presentation, mostly characterized by growth delay, intellectual disability, body asymmetry with leg length differentiation, scoliosis, and congenital heart anomalies (e.g. ventricular septal defect). Prenatal ultrasound findings include intrauterine growth retardation, nuchal thickening brain anomalies (e.g. cerebellar hypoplasia), pleural effusion and single umbilical artery. Patients with no associated malformations have also been reported. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| Mosaic trisomy 2 is a rare chromosomal anomaly syndrome, with a highly variable phenotype, principally characterized by intrauterine growth restriction, growth and motor delay, craniofacial dysmorphism (e.g. microcephaly, hypertelorism, micro/anophthalmia, midface hypoplasia, cleft lip/palate), congenital heart and neural tube defects, as well as various skeletal (e.g. scoliosis, radioulnar hypoplasia, preaxial polydactyly) and gastrointestinal (e.g. intestinal malrotation, Hirschsprung disease) anomalies. Central nervous system malformations (including ventriculomegaly, thin corpus callosum, spina bifida) have also been reported. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| Mosaic trisomy 3 is a rare chromosomal anomaly syndrome with high phenotypic variability ranging from a mild phenotype presenting joint pain and laxity, mild facial dysmorphism (e.g. long facies, prominent eyes, dysplastic ears, downturned corners of the mouth, micrognathia) and no developmental delays to more severe phenotypes including short stature, intellectual disability, severe developmental delays, additional craniofacial dysmorphic features (e.g. brachycephaly, high forehead, flat midface, short neck) and hearing impairment, as well as skeletal (e.g. pectus excavatum, scoliosis), ocular (e.g. coloboma) and cardiac abnormalities. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| Monosomy 13q14 is a rare chromosomal anomaly syndrome, resulting from a partial deletion of the long arm of chromosome 13, characterized by developmental delay, variable degrees of intellectual disability, retinoblastoma and craniofacial dysmorphism (including micro/dolichocephaly, high and broad forehead, prominent eyebrows, thick, anteverted ear lobes, short nose with a broad nasal bridge and bulbous tip, prominent philtrum, large mouth with thin upper lip and thick, everted lower lip). Other features reported include high birth weight, macrocephaly, pinealoma, hepatomegaly, inguinal hernia and cryptorchidism. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| Distal monosomy 13q is a rare chromosomal anomaly syndrome, resulting from a partial deletion of the long arm of chromosome 13, with a highly variable phenotype typically characterized by varying degrees of intellectual disability and developmental delay, as well as CNS malformations (e.g. holoprosencephaly, anencephaly, ventriculomegaly, Dandy-Walker malformation), ocular abnormalities (e.g. hypertelorism, microphthalmia, strabismus, aniridia, retinal dysplasia) and craniofacial dysmorphism (microcephaly, trigonocephaly, large and malformed ears, broad prominent nasal bridge, micrognathia). Cardiac, genitourinary, gastrointestinal and skeletal manifestations have also been reported. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| Monosomy 13q34 is a rare chromosomal anomaly syndrome, resulting from the partial deletion of the long arm of chromosome 13, principally characterized by global developmental delay, mild intellectual disability, obesity and mild craniofacial dysmorphism (microcephaly, wide rectangular forehead, downslanting palpebral fissures, mild ptosis, prominent nose with long nasal bridge and broad tip, small chin). Other variable reported features include congenital heart defects, hand and foot anomalies (e.g. polydactyly) and agenesis of the corpus callosum. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| 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. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| A rare multiple congenital anomalies/dysmorphic syndrome characterized by mild to severe intellectual deficit associated with variable clinical manifestations including spasticity, cryptorchidism, maxillary hypoplasia, alopecia areata, epilepsy, short stature, impaired speech, and behavioral problems. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| A rare genetic lethal multiple congenital anomalies/dysmorphic syndrome characterized by severe hydranencephaly and renal dysplasia or agenesis. Pregnancy is complicated by oligo- or anhydramnios, leading to features of Potter sequence (including typical facies and microretrognathia, limb contractures, talipes equinovarus, and pulmonary hypoplasia) in the fetus. Affected fetuses either die in utero or shortly after birth. Histology of the brain shows widespread presence of multinucleated neurons and glial cells. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| A rare genetic multiple congenital anomalies/dysmorphic syndrome characterized by global developmental delay, intellectual disability, hypotonia, seizures, and autism spectrum disorder. Variable associated features include ophthalmologic anomalies, congenital heart defects, genitourinary defects, and craniofacial dysmorphism (including frontal bossing, epicanthal folds, low-set, posteriorly rotated ears, anteverted nares, and micrognathia). Brain imaging may show thinning of the corpus callosum, white matter abnormalities, ventriculomegaly, and a small cerebellar vermis. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| A rare genetic multiple congenital anomalies/dysmorphic syndrome characterized by global developmental delay and intellectual disability, infantile hypotonia, microcephaly, movement disorder, and impaired balance. More variable manifestations are hearing loss, cortical visual impairment, abnormalities of fingers and/or toes, congenital cardiac anomalies, kyphoscoliosis, dysmorphic facial features, abnormal sleep pattern, and seizures, among others. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| TBCK-related intellectual disability syndrome is a rare, genetic, syndromic intellectual disability characterized by usually profound intellectual disability with absent speech, severe infantile hypotonia with decreased or absent reflexes, markedly slow motor development (with no progress beyond the ability to sit independently), early-onset epilepsy, strabismus and post-natal onset of progressive brain atrophy (including loss of brain volume, ex vacuo ventriculomegaly, dysgenesis of corpus callosum, white matter abnormalities ranging from non-specific changes to leukodystrophy). Swallowing difficulties, respiratory insufficiency, osteoporosis and variable craniofacial dysmorphisms (including plagio/brachycephaly, bitemporal narrowing, high-arched eyebrows, high nasal bridge, anteverted nares, high palate, tented upper lip) may constitute additional clinical features. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| Lethal hydranencephaly-diaphragmatic hernia syndrome is a rare, genetic, lethal, multiple congenital anomalies syndrome characterized by hydranencephaly and diaphragmatic hernia, as well as macrocephaly, a widely open anterior fontanel, scaphoid abdomen and hypotonia. Additionally, congenital heart defects, polyhydramnios and pulmonary hypertension have also been associated. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| X-linked cerebral-cerebellar-coloboma syndrome is a rare, genetic syndrome with a cerebellar malformation as major feature characterized by cerebellar vermis hypo- or aplasia, ventriculomegaly, agenesis of corpus callosum and abnormalities of the brainstem and cerebral cortex in association with ocular coloboma. Clinically, patients show hydrocephalus at birth, neonatal hypotonia with abnormal breathing pattern, ocular abnormalities with impaired vision, severe psychomotor delay, and seizures. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| Christianson syndrome |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| A rare defect of tropomyosin characterized by decreased fetal movements and generalized muscle stiffness at birth. Additional features include joint contractures, short stature, kyphosis, dysmorphic features, temperature dysregulation, and variably severe respiratory involvement with hypoxemia. Muscle biopsy shows mild myopathic features. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| A rare multiple congenital anomalies/dysmorphic syndrome characterized by early-onset progressive bone marrow failure with anemia, leukopenia, mild thrombopenia, and myelodysplastic features, as well as non-hematologic manifestations, such as developmental delay, cataracts, facial dysmorphism, short stature, and skeletal anomalies. Immunodeficiency primarily affects B-cells and may lead to increased susceptibility to infections. Additional reported features include dry skin and eczema, cardiac anomalies, hearing loss, and reduction of cerebral volume on brain imaging. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| A rare genetic multiple congenital anomalies/dysmorphic syndrome characterized by the association of developmental delay, variable intellectual disability, skeletal dysplasia, and in many cases T-cell immunodeficiency and other immunologic abnormalities. Skeletal findings include short stature, anomalies of the long bones, hands and feet, and pelvis, platyspondyly, cervical malformation, and pectus excavatum. Dysmorphic facial features, such as coarse face, hypertelorism, and broad nasal tip, may be present. Additional reported manifestations are seizures, hyperreflexia, nystagmus, and muscular hypotonia, as well as multiple liver cysts. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
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| NEK9-related lethal skeletal dysplasia is a rare, lethal, primary bone dysplasia characterized by fetal akinesia, multiple contractures, shortening of all long bones, short, broad ribs, narrow chest and thorax, pulmonary hypoplasia and a protruding abdomen. Short, bowed femurs may also be associated. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
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| A rare multiple congenital anomalies syndrome usually characterized by microcephaly, ocular anomalies such as microphthalmia, and apple-peel intestinal atresia. Facial dysmorphism is reported in some cases and may include narrow or sloped forehead, hypertelorism, microphthalmia, dysplastic, edematous deep-set eyes, short palpebral fissures, large or low set ears, broad nasal root, anteverted or broad nasal tip, long philtrum, micrognathia, thin upper vermillion, large mouth and skin tag on the cheek. Motor delay and intellectual disability have been reported. Heart, brain, craniofacial abnormalities, renal hypoplasia and other anomalies (e.g. lower limb edema, thrombocytopenia) are variably present. Rarely, cases without intestinal atresia, microcephaly or developmental delay can be found. Severe lethal cases have also been reported. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
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| A rare, genetic, neurodevelopmental disorder with primordial microcephaly characterized by primary microcephaly, moderate to severe intellectual disability, and global developmental delay. Variable brain malformations are common ranging from simplified gyration, to cortical malformations such as pachygyria, polymicrogyria, reduced sulcation and midline defects. Craniofacial dysmorphism (e.g. sloping forehead, high and broad nasal bridge) are related to the primary microcephaly. Short stature is frequently observed and may be severe. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
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| Severe hypotonia-psychomotor developmental delay-strabismus-cardiac septal defect syndrome is a rare, genetic, non-dystrophic congenital myopathy disorder characterized by a neonatal-onset of severe generalized hypotonia associated with mild psychomotor delay, congenital strabismus with abducens nerve palsy, and atrial and/or ventricular septal defects. Cryptorchidism is commonly reported in male patients and muscle biopsy typically reveals increased variability in muscle fiber size. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
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| A rare, primary bone dysplasia characterised by proportional short stature, early cessation of bone growth, accelerated skeletal maturation, variable presence of early-onset osteoarthritis and osteochondritis dissecans, and normal endocrine evaluation. The variable dysmorphic features include mild to relative macrocephaly, frontal bossing, midfacial hypoplasia, flat nasal bridge, brachydactyly, broad thumbs, and lordosis. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
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| A rare multiple congenital anomalies/dysmorphic syndrome characterized by profound intellectual disability, choreoathetosis, progressive spastic diplegia, progressive tapetoretinal degeneration with loss of retinal vessels, and glomerulopathy resulting in death late in the first or early in the second decade of life. Absence of the cerebellar granular layer has been reported. There have been no further descriptions in the literature since 1982. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
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| Epibulbar lipodermoid - preauricular appendages - polythelia is a branchial arch syndrome described in seven sibs of one Danish family and characterized by supernumerary nipples (polythelia), preauricular appendages and often binocular epibulbar lipodermoids or unilateral subconjunctival lipodermoids. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
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| A rare multiple congenital anomalies syndrome characterized by congenital hearing impairment, small or absent nails on the hands and feet, and small or absent terminal phalanges. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
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| A rare developmental defect with connective tissue involvement characterized by joint hyperextensibility and multiple dislocations of large joints, severe myopia, and short stature. Other common features include retinal detachment, iris and chorioretinal coloboma, kyphoscoliosis and other spine deformities, pectus carinatum, talipes equinovarus, and progressive hearing loss. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
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| A rare genetic multiple congenital anomalies/dysmorphic syndrome characterized by congenital microcephaly, infantile-onset epileptic encephalopathy, and profound developmental delay. Additional reported features include cortical visual impairment, sensorineural hearing loss, increased muscle tone, limb contractures, scoliosis, and dysmorphic features like midface hypoplasia, narrow forehead, short nose, narrowed nasal bridge, and small chin. Brain imaging may show thin corpus callosum and delayed myelination. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
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| A rare genetic multiple congenital anomalies/dysmorphic syndrome characterized by the association of pancreatic agenesis and lobar/semilobar holoprosencephaly. Insulin-dependent diabetes mellitus and pancreatic exocrine deficiency manifest early after birth. Additional reported manifestations include intrauterine growth retardation, muscle weakness, seizures, mild intellectual disability and dysmorphic craniofacial features, and agenesis of the gallbladder. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
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| A rare genetic multiple congenital anomalies/dysmorphic syndrome characterized by the association of severe intellectual disability, strabismus, and anterior maxillary protrusion with vertical maxillary excess, open bite, and prominent crowded teeth. Mild cochlear hearing loss has been reported in addition. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
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| A partial monosomy of the long arm of chromosome 9 characterized by intellectual disability, developmental delay with pronounced speech delay, short stature, and muscular hypotonia. Common craniofacial dysmorphic features consist of microcephaly, prominent forehead, round face, arched eyebrows, upslanting palpebral fissures, strabismus, short nose, and thin upper lip. Other clinical findings include epilepsy, ataxia, unspecific brain MRI findings, early-onset primary dystonia, nail dysplasia, and bone malformations, in particular patellar abnormalities, epistaxis, and cutaneous-mucous telangiectasias. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
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| A rare, genetic, multiple congenital anomalies/dysmorphic features-intellectual disability syndrome characterized by developmental and speech delay, intellectual disability, feeding difficulties, failure to thrive, growth retardation, and associated malformations such as abnormality of fingers and toes (i.e. clinodactyly of the 5th finger, 2-3 toe syndactyly), microcephaly, heart defects, and upper airways anomalies. Observed facial dysmorphism includes hypertelorism, small, narrow or downslanting palpebral fissures, ptosis, epicanthus, ear malformations, broad nasal bridge, bulbous/prominent nose, short philtrum, thin lips, retrognathia/micrognathia, arched/cleft palate, and dental anomalies. Additional variable manifestations include hearing and visual impairment, seizures, joint anomalies, obesity, and behavioral/psychiatric disorders. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| A rare, genetic, syndromic intellectual disability characterized by intrauterine growth retardation, microcephaly, hypotonia, motor and neurodevelopmental delay, speech delay, intellectual disability, and mild dysmorphic features. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| A rare, multiple congenital anomalies syndrome with cardiac involvement as a major feature characterized by QT prolongation, congenital heart defects, syndactyly, facial dysmorphism and neurodevelopmental features. There are three clinical phenotypes recognized, the classical types that present with a prolonged QT interval and either with (TS1) or without (TS2) cutaneous syndactyly of fingers and toes. The atypical form (ATS) causes multi-system health concerns but not necessarily with prolonged QT. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| A rare lethal multiple congenital anomalies/dysmorphic syndrome characterized by the association of fetal akinesia sequence, bilateral microphthalmia, microtia, and persistent truncus arteriosus. Additional dysmorphic features include prominent forehead, small nose, micrognathia, as well as camptodactyly and symphalangism. Contractures of large joints and micropenis have also been reported. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
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| A rare genetic disease characterized by pre- and postnatal growth restriction, developmental delay, adrenal hypoplasia, genital abnormalities (such as microphallus, hypospadias, or cryptorchidism), thrombocytopenia and/or anemia, recurrent severe invasive infections, and enteropathy with chronic diarrhea. Myelodysplastic syndrome and dysmorphic features (including downslanting palpebral fissures, low-set and posteriorly rotated ears, anteverted nares, camptodactyly, and arachnodactyly, among others) may also be observed. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
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| A rare mitochondrial disease characterized by prenatal complications including oligohydramnios, fetal growth restriction, hydrops, and anemia, followed by severe lactic acidosis, hyaline membrane disease, pulmonary hypertension, cardiac anomalies, liver dysfunction, urogenital abnormalities and progressive renal disease, seizures, thrombocytopenia, and sideroblastic anemia resulting in multisystem organ failure and death shortly after birth. Less severely affected patients surviving the neonatal period and showing sensorineural hearing loss and developmental delay have been reported. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| A rare X-linked syndromic intellectual disability which in symptomatic, female carriers is characterized by a highly variable phenotype including facial dysmorphisms (prominent forehead, hypertelorism, down-slanting palpebral fissures, epicanthic folds, thick lips with everted lower vermilion, thick nasal alae, and septum), short hands with tapering fingers, short stature and skeletal findings (progressive kyphoscoliosis). Intellectual disability is mild to moderate, but intellect can also be normal. A high rate of psychiatric disorders has also been reported. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| A rare disorder of plasmalogen biosynthesis characterized by syndromic severe intellectual disability with congenital cataracts, early-onset epilepsy, microcephaly, global developmental delay, growth retardation and short stature, and spastic quadriparesis. Dysmorphic facial features may be present, including high-arched eyebrows, flattened nasal root, hypertelorism, and long and smooth philtrum. Rhizomelia is not part of the syndrome. Cerebellar atrophy, white matter abnormalities, and Dandy-Walker malformation have been described on brain imaging. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| 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. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| A rare genetic multiple congenital anomalies/dysmorphic syndrome characterized by vertebral segmentation defects associated with cardiac (patent ductus arteriosus, atrial septal defect, hypoplastic left heart) and renal (hypoplastic kidneys, chronic kidney disease) anomalies. Additional reported features include limb defects, short stature, global developmental delay, intellectual disability, and sensorineural hearing loss, among others. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| A rare syndrome characterized by mesomelic shortening and bowing of the limbs, camptodactyly, skin dimpling and cleft palate with retrognathia and mandibular hypoplasia. It has been described in a brother and sister born to consanguineous parents. Transmission is autosomal recessive. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| Diastrophic dysplasia |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| A rare primary bone dysplasia characterized by the association of spondylometaphyseal dysplasia, generalized joint laxity, and dentinogenesis imperfecta. Main skeletal abnormalities comprise short stature, narrow chest, scoliosis, mesomelic limb shortening, and brachydactyly. Radiographic features include severe metaphyseal irregularities of the tubular bones, platyspondyly with coronal clefts, cone-shaped epiphyses of the hands, square iliac wings, and coxa valga. Additional extraskeletal manifestations like pulmonary hypoplasia, cystic renal disease, and non-obstructive hydrocephalus have also been reported. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| Lethal occipital encephalocele-skeletal dysplasia syndrome is a rare, genetic, bone development disorder characterized by occipital and parietal bone hypoplasia leading to occipital encephalocele, calvarial mineralization defects, craniosynostosis, radiohumeral fusions, oligodactyly and other skeletal anomalies (arachnodactyly, terminal phalangeal aplasia of the thumbs, bilateral absence of the great toes, pronounced bilateral angulation of femora, shortened limbs, advanced osseous maturation). Fetal death in utero is associated. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| A rare genetic multiple congenital anomalies/dysmorphic syndrome characterized by choanal atresia, athelia or hypoplastic nipples, branchial arch abnormalities, external ear malformations, hearing loss, thyroid abnormalities, delayed or absent pubertal development, and short stature. Developmental delay/intellectual disability are variably reported. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| A rare primary bone dysplasia characterized by microcephaly, developmental delay and intellectual disability, sensorineural hearing loss, retinal degeneration, and skeletal dysplasia. Musculoskeletal abnormalities include delayed ossification of epiphyses, spondyloepimetaphyseal dysplasia, short stature, severe spinal deformities, and severe joint laxity resulting in multiple joint dislocations. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
| A rare genetic syndrome with characteristics of developmental delay and mild to moderate intellectual disability. Verbal language acquisition is usually delayed, with restricted language. The congenital heart defects are present in 41% of individuals, the most frequent being interatrial communication and interventricular communication. The syndrome is caused by heterozygous, usually de novo pathogenic or likely pathogenic variants in the CDK13 gene (7p14.1), coding for a protein which regulates transcription. Transmission is autosomal dominant however, in most situations, the pathogenic variants arise de novo, and thus, the risk of sibling recurrence is low. |
Is a |
True |
Multiple system malformation syndrome |
Inferred relationship |
Some |
|
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