Inbound Relationships |
Type |
Active |
Source |
Characteristic |
Refinability |
Group |
A rare chromosomal anomaly of chromosome 13 characterized by a widely variable phenotype (ranging from mild to severe) principally characterized by intrauterine growth retardation, developmental delay, short stature, moderate to severe intellectual deficit, microcephaly, facial dysmorphism (i.e. upslanting palpebral fissures, hypertelorism, abnormal ears, broad nasal bridge, high arched palate, micrognathia, small mouth, and thin lips), hands and feet anomalies, and genital abnormalities. Additional features reported include behavioral problems, hearing and speech disorders, congenital heart defects, cerebral malformations, and anal atresia. |
Is a |
True |
Ring chromosome |
Inferred relationship |
Some |
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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 |
Ring chromosome |
Inferred relationship |
Some |
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A rare chromosomal anomaly characterized by highly variable manifestations, ranging from a severe phenotype which presents with lissencephaly and severe intellectual disability to a milder phenotype that includes short stature, microcephaly, intellectual disability, seizures (that may be pharmacoresistant), café-au-lait spots, retinal flecks and minor facial dysmorphism, depending on the presence or absence of the Miller-Dieker critical region. |
Is a |
True |
Ring chromosome |
Inferred relationship |
Some |
|
Ring chromosome 12 syndrome is a rare chromosomal anomaly syndrome with a highly variable phenotype principally characterized by postnatal growth retardation, variable degrees of developmental delay and intellectual disability, microcephaly and facial dysmorphism (including epicanthal folds, low-set, cupped ears, prominent nose with flat nasal bridge, high arched palate, micrognathia). Skeletal abnormalities (e.g. pectus excavatum, clinodactyly), congenital heart malformations, cryptorchidism, café-au-lait spots and epilepsy have also been reported. |
Is a |
True |
Ring chromosome |
Inferred relationship |
Some |
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A rare chromosomal anomaly syndrome, with a highly variable phenotype, characterized by pre- and/or postnatal growth retardation, variable intellectual disability, short stature, dysmorphic features (microcephaly, triangular facies, frontal bossing, hypertelorism, ear anomaly, broad nasal bridge, highly arched palate, micrognathism), hand and feet anomalies (e.g. brachydactyly, clinodactyly, syndactyly), and multiple hyperpigmented and/or hypopigmented spots. Severe phenotypes present with cardiac abnormalities and/or renal malformations. Other reported features include hypotonia, speech delay, talipes equinovarus, and genital anomalies (cryptorchidism and hypospadias). |
Is a |
True |
Ring chromosome |
Inferred relationship |
Some |
|
A rare chromosomal anomaly syndrome, resulting from the partial deletion of chromosome 16, characterized by pre- and postnatal growth delay, severe developmental delay, intellectual disability, speech delay, and craniofacial dysmorphism (e.g. microcephaly, hypertelorism, downslanted palpebral fissures, ptosis, telecanthus, low set and dysmorphic ears, broad flat nasal bridge, down-turned mouth corners, high palate, retrognathia). Patients may also present congenital cataract, mild synophrys, hypotonia, and poor social contact. Congenital heart anomalies (e.g. ventricular septal defect, patent ductus arteriosus) have also been reported. |
Is a |
True |
Ring chromosome |
Inferred relationship |
Some |
|
A rare chromosome Y structural anomaly, with a highly variable phenotype, mostly characterized by short stature, partial to total gonadal failure, sexual infantilism, genital anomalies (e.g. ambiguous genitalia, hypospadias, cryptorchidism), and azoospermia or oligozoospermia. Additional reported features include speech delay, obesity, and acanthosis nigricans. Gender dysphoria and comorbid bipolar disorder have also been observed. |
Is a |
True |
Ring chromosome |
Inferred relationship |
Some |
|
Ring chromosome 19 syndrome is a rare chromosomal anomaly syndrome with a highly variable phenotype that may range from normal to patients with profound intellectual disability, developmental delay, learning disability (especially speech) and mild dysmorphism (including micro/macrocephaly, prominent forehead, low-set and posteriorly rotated ears, hypertelorism, high nasal bridge, prominent philtrum, retro/micrognathia). Mild hypotonia and autistic-like mannerisms (e.g. hand opening and closing, head banging) may also be associated. Other anomalies, such as cutis laxa, hearing loss, syndactyly, digital hypoplasia, and talipes equinovarus, have also been reported. |
Is a |
True |
Ring chromosome |
Inferred relationship |
Some |
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Ring chromosome 2 syndrome is a rare chromosomal anomaly syndrome with highly variable phenotype principally characterised by intrauterine growth retardation, failure to thrive, developmental delay, hypotonia, mild dysmorphic features (including microcephaly, short forehead, upslanting palpebral fissures, hypertelorism, epicanthal folds, wide nasal bridge, broad nasal tip, long philtrum, thin upper lip, micrognathia, short neck), skeletal anomalies (e.g. kyphosis, brachydactyly, clinodactyly, talipes equinovarus) and dermatological features (i.e. café-au-lait spots). Patients may also present ventriculoseptal defects and genital abnormalities (e.g. genital hypoplasia, phimosis, cryptorchidism). |
Is a |
True |
Ring chromosome |
Inferred relationship |
Some |
|
Ring chromosome 3 syndrome is a rare chromosomal anomaly syndrome with a highly variable phenotype principally characterized by pre- and postnatal growth retardation, short stature, developmental delay, mild to severe intellectual disability, microcephaly and mild dysmorphic features (including triangular face, dysplastic ears, upslanting palpebral fissures, epicanthic folds, broad nasal bridge, full nasal tip, long philtrum, downturned corners of the mouth, and micro/retrognathia). Additional manifestations reported include hypotonia, mild articular limitation, hearing loss, digital anomalies (i.e. clinodactyly, brachydactyly), café-au-lait patches and hypospadias. |
Is a |
True |
Ring chromosome |
Inferred relationship |
Some |
|
Ring chromosome 5 syndrome is a rare chromosomal anomaly syndrome, with high phenotypic variability, principally characterized by a neonatal mewing cry, severe developmental delay and intellectual disability, short stature, hypotonia, dysmorphic features (including microcephaly, facial asymmetry, hypertelorism, epicanthal folds, abnormal ears, micro/retrognathia), congenital cardiac anomalies (such as atrial and ventricular septal defect, tricuspid insufficiency, hypoplastic aorta) and skeletal abnormalities (e.g. hypoplastic thumbs, anomalous ulna/radius, dysplastic metacarpals and phalanges). |
Is a |
True |
Ring chromosome |
Inferred relationship |
Some |
|
Ring chromosome 6 syndrome is a rare chromosomal anomaly syndrome with highly variable phenotype principally characterized by prenatal/postnatal growth failure, intellectual disability, developmental delay, craniofacial dysmorphism (including microcephaly, microphthalmia, epicanthus, low-set and malformed ears, broad and flat nasal bridge, full lips, micrognathia), central nervous system anomalies (e.g. hydrocephalus, cortical atrophy, ventriculomegaly), short neck, and delayed bone age. Cardiac defects, limb anomalies, hip joint malformations, and seizures have also been reported. |
Is a |
True |
Ring chromosome |
Inferred relationship |
Some |
|
Ring chromosome 7 syndrome is a rare chromosomal anomaly syndrome, with highly variable phenotype, principally characterized by growth failure, short stature, intellectual disability, dermatological abnormalities (nevus flammeus, dark pigmented nevi, café-au-lait spots), microcephaly and facial dysmorphism (including facial asymmetry, small ears, abnormal palpebral fissures, ptosis, epicanthic folds, hyper/hypotelorism). Additional reported features include convulsions, cleft lip and palate, clinodactyly, kyphoscoliosis and genital anomalies (i.e. cryptorchidism, hypospadias, micropenis). |
Is a |
True |
Ring chromosome |
Inferred relationship |
Some |
|
An autosomal anomaly with characteristics of variable clinical features, most commonly including significant intrauterine and postnatal growth failure, developmental delay, intellectual disability, microcephaly and dysmorphic facial features. Some less frequent clinical features are dysgenesis of corpus callosum, atrial septal defect, rocker bottom feet and clinodactyly. |
Is a |
True |
Ring chromosome |
Inferred relationship |
Some |
|
An autosomal anomaly characterised by variable clinical features, depending on the size and precise location of deleted chromosome segments. Most patients present with developmental delay, intellectual disability, growth retardation, microcephaly, clinodactyly, and dysmorphic features. Congenital heart disease and genitourinary anomalies were reported in some cases. |
Is a |
True |
Ring chromosome |
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 |
Ring chromosome |
Inferred relationship |
Some |
|
An autosomal anomaly with characteristics of variable clinical features, most commonly including global developmental delay, hypotonia, growth retardation with microcephaly, intellectual disability with severe speech delay, seizures or abnormal EEG, autistic spectrum disorder and other behavioural characteristics. |
Is a |
True |
Ring chromosome |
Inferred relationship |
Some |
|
Autosomal anomaly characterised by variable clinical features, most commonly including significant intrauterine and postnatal growth retardation, developmental delay, intellectual disability, microcephaly, and dysmorphic facial features. Some less frequent features are cleft lip and/or cleft palate, congenital cardiovascular, gastrointestinal and genitourinary system anomalies. |
Is a |
True |
Ring chromosome |
Inferred relationship |
Some |
|
An autosomal anomaly with characteristics of variable clinical features, most commonly including growth retardation, developmental delay, intellectual disability, epilepsy, microcephaly, short stature, dysmorphic features, hypogammaglobulinaemia, thrombocytopenia and unspecific skeletal anomalies (hemivertebrae, clinodactyly, syndactyly). In rare cases, it has been described in phenotypically normal individuals. |
Is a |
True |
Ring chromosome |
Inferred relationship |
Some |
|
A rare autosomal anomaly characterized by variable clinical features, most commonly including hypotonia, neonatal feeding and respiratory difficulties, microcephaly, global developmental delay and intellectual disability, growth hormone deficiency, hypothyroidism, hearing loss, aural atresia, dysmorphic facial features and behavioral characteristics. |
Is a |
True |
Ring chromosome |
Inferred relationship |
Some |
|
A rare chromosomal anomaly characterised by intellectual deficit, retinal and skin pigmentation disorders, seizures, and dysmorphic features, including flat occiput, epicanthal folds, downward slanting eyes, flat nasal bridge, upturned nostrils, short neck, and large low set ears. |
Is a |
True |
Ring chromosome |
Inferred relationship |
Some |
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A rare autosomal anomaly characterized by variable clinical features, including early growth retardation and short stature, microcephaly, developmental delay, some degree of intellectual disability, facial dysmorphism and cafe-au-lait spots. In some cases, congenital heart disease and endocrine abnormalities have been reported. |
Is a |
True |
Ring chromosome |
Inferred relationship |
Some |
|
A rare chromosomal disorder, characterised by childhood onset drug resistant epilepsy with typical electroencephalographic findings (EEG), mild to severe intellectual disability and behavioural problems. |
Is a |
True |
Ring chromosome |
Inferred relationship |
Some |
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