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Items: 1 to 20 of 196

1.

Cardioacrofacial dysplasia 1

Cardioacrofacial dysplasia-1 (CAFD1) is characterized by congenital cardiac defects, primarily common atrium or atrioventricular septal defect; limb anomalies, including short limbs, brachydactyly, and postaxial polydactyly; and dysmorphic facial features (Palencia-Campos et al., 2020). Genetic Heterogeneity of Cardioacrofacial Dysplasia CAFD2 (619143) is caused by mutation in the PRKACB gene (176892) on chromosome 1p31. [from OMIM]

MedGen UID:
1777656
Concept ID:
C5436885
Disease or Syndrome
2.

Mitochondrial DNA depletion syndrome 19

MedGen UID:
1770258
Concept ID:
C5436514
Disease or Syndrome
3.

Cardioacrofacial dysplasia 2

Cardioacrofacial dysplasia-2 (CAFD2) is characterized by congenital cardiac defects, primarily common atrium or atrioventricular septal defect; limb anomalies, including short limbs, brachydactyly, and postaxial polydactyly; and dysmorphic facial features. Developmental delay of variable severity has also been observed (Palencia-Campos et al., 2020). For a discussion of genetic heterogeneity of CAFD, see CAFD1 (619142). [from OMIM]

MedGen UID:
1731253
Concept ID:
C5436886
Disease or Syndrome
4.

Sandestig-stefanova syndrome

Sandestig-Stefanova syndrome (SANDSTEF) is an autosomal recessive developmental syndrome characterized by pre- and postnatal microcephaly, trigonocephaly, congenital cataract, microphthalmia, facial gestalt, camptodactyly, loss of periventricular white matter, thin corpus callosum, delayed myelinization, and poor prognosis (Sandestig et al., 2019). [from OMIM]

MedGen UID:
1718072
Concept ID:
C5394118
Disease or Syndrome
5.

Sorbitol dehydrogenase deficiency with peripheral neuropathy

Sorbitol dehydrogenase deficiency with peripheral neuropathy (SORDD) is an autosomal recessive disorder characterized by onset of distal muscle weakness mainly affecting the lower limbs and resulting in difficulty walking. Onset of symptoms is usually in the first or second decades of life, although later adult onset has been reported; the disorder is slowly progressive. Nerve conduction velocities are most consistent with an axonal process. More variable features include distal sensory impairment, upper limb tremor, and scoliosis. Laboratory studies show increased serum sorbitol (summary by Cortese et al., 2020). [from OMIM]

MedGen UID:
1714781
Concept ID:
C5394466
Disease or Syndrome
6.

Long QT syndrome 16

LQT16 Long QT syndrome-16 (LQT16) is characterized by a markedly prolonged corrected QT (QTc) interval and 2:1 atrioventricular (AV) block, with onset in the perinatal period. Patients experience bradycardia or ventricular tachyarrhythmias that may result in syncope, cardiac arrest, and/or sudden death (Reed et al., 2015; Wren et al., 2019). Patients with LQT14 (616247), LQT15 (616249), or LQT16, resulting from mutation in calmodulin genes CALM1 (114180), CALM2 (114182), or CALM3, respectively, typically have a more severe phenotype, with earlier onset, profound QT prolongation, and a high predilection for cardiac arrest and sudden death, than patients with mutations in other genes (Boczek et al., 2016). CPVT6 Catecholaminergic polymorphic ventricular tachycardia-6 (CPVT6) is characterized by childhood-onset syncopal episodes with exercise or stress. Electrocardiogram (ECG) shows a normal QT interval with a prominent U wave, and stress testing reveals premature ventricular contractions (PVCs) that may occur as bigeminy or couplets, and nonsustained ventricular tachycardia (Gomez-Hurtado et al., 2016). [from OMIM]

MedGen UID:
1713991
Concept ID:
C5394068
Disease or Syndrome
7.

Developmental and epileptic encephalopathy, 88

Developmental and epileptic encephalopathy-88 (DEE88) is an autosomal recessive severe neurologic disorder characterized by global developmental delay, early-onset epilepsy, and progressive microcephaly. Brain MRI findings may include corpus callosum abnormalities, prominent ventricles, and mild hypoplasia of the inferior vermis and pons (Broeks et al., 2019). For a discussion of genetic heterogeneity of developmental and epileptic encephalopathy, see 308350. [from OMIM]

MedGen UID:
1712195
Concept ID:
C5394553
Disease or Syndrome
8.

Skeletal dysplasia, mild, with joint laxity and advanced bone age

CSGALNACT1 deficiency is characterized by mild skeletal dysplasia, joint hypermobility, and advanced bone age. Shortness of long bones is evident prenatally, and patients exhibit short stature and relative macrocephaly. Advanced carpotarsal bone age and monkey-wrench appearance of the femur observed in infancy may disappear with age (Mizumoto et al., 2020). [from OMIM]

MedGen UID:
1711043
Concept ID:
C5394341
Disease or Syndrome
9.

Triokinase and FMN cyclase deficiency syndrome

Triokinase and FMN cyclase deficiency syndrome (TKFCD) is a multisystem disease with marked clinical variability, even intrafamilially. In addition to cataract and developmental delay of variable severity, other features may include liver dysfunction, microcytic anemia, and cerebellar hypoplasia. Fatal cardiomyopathy with lactic acidosis has been observed (Wortmann et al., 2020). [from OMIM]

MedGen UID:
1710207
Concept ID:
C5394125
Disease or Syndrome
10.

Developmental and epileptic encephalopathy, 83

Developmental and epileptic encephalopathy-83 (DEE83) is a severe autosomal recessive neurodevelopmental disorder characterized by onset of frequent seizures in the first days to months of life that are usually refractory to medical treatment and are associated with significant EEG abnormalities. Affected individuals have profoundly impaired development, with no motor or language skill acquisition, poor or absent visual tracking, and poor oromotor function necessitating tube feeding. Many patients die in the first years of life (summary by Perenthaler et al., 2020). For a general phenotypic description and a discussion of genetic heterogeneity of DEE, see 308350. [from OMIM]

MedGen UID:
1684784
Concept ID:
C5231487
Disease or Syndrome
11.

Neurodevelopmental disorder with visual defects and brain anomalies

Neurodevelopmental disorder with visual defects and brain anomalies (NEDVIBA) is characterized by global developmental delay with impaired intellectual development and speech delay, variable visual defects, including retinitis pigmentosa and optic atrophy, hypotonia or hypertonia, and variable structural brain abnormalities. Other nonspecific features may be found (summary by Okur et al., 2019). [from OMIM]

MedGen UID:
1684774
Concept ID:
C5231404
Disease or Syndrome
12.

EPILEPTIC ENCEPHALOPATHY, EARLY INFANTILE, 82

Developmental and epileptic encephalopathy-82 (DEE82) is an autosomal recessive mitochondriopathy manifest as early-onset metabolic epileptic encephalopathy. Soon after birth, affected individuals exhibit hypotonia, feeding difficulties, and global developmental delay even before the onset of seizures in the first year of life. The severity is variable, but all patients have severely impaired intellectual development with absent speech and spastic tetraplegia. Other features include poor overall growth with microcephaly and recurrent infections. Brain imaging shows cerebral atrophy, thin corpus callosum, cerebellar hypoplasia, and white matter abnormalities. Laboratory studies show increased serum lactate and ammonia. Importantly, treatment with combined pyridoxine and serine can result in significant improvement in seizures as well as some mild developmental progress (summary by van Karnebeek et al., 2019). For a general phenotypic description and a discussion of genetic heterogeneity of DEE, see 308350. [from OMIM]

MedGen UID:
1684694
Concept ID:
C5231473
Disease or Syndrome
13.

Urofacial syndrome 1

Urofacial syndrome (UFS) is characterized by prenatal or infantile onset of urinary bladder voiding dysfunction, abnormal facial movement with expression (resulting from abnormal co-contraction of the corners of the mouth and eyes), and often bowel dysfunction (constipation and/or encopresis). Bladder voiding dysfunction increases the risk for urinary incontinence, megacystis, vesicoureteric reflux, hydroureteronephrosis, urosepsis, and progressive renal impairment. In rare instances, an individual who has (a) a molecularly confirmed diagnosis and/or (b) an affected relative meeting clinical diagnostic criteria manifests only the characteristic facial features or only the urinary bladder voiding dysfunction (not both). Nocturnal lagophthalmos (incomplete closing of the eyes during sleep) appears to be a common and significant finding. [from GeneReviews]

MedGen UID:
1684629
Concept ID:
CN033872
Disease or Syndrome
14.

Paganini-Miozzo syndrome

Paganini-Miozzo syndrome (MRXSPM) is a neurodevelopmental disorder characterized by global developmental delay, impaired intellectual development, high myopia, and mild dysmorphic facial features (summary by Paganini et al., 2019) [from OMIM]

MedGen UID:
1683361
Concept ID:
C5193010
Disease or Syndrome
15.

Paragangliomas 6

Paragangliomas-6 (PGL6) is an adult-onset tumor predisposition syndrome in which affected individuals develop neuroendocrine neoplasms, known as paragangliomas. Many tumors arise in the abdomen, although some may arise in other regions, including the head and neck. Some of the tumors may secrete biologically active normetanephrines, resulting in secondary hypertension. Tumors may be benign or malignant, and some may metastasize (summary by Buffet et al., 2018). For a general phenotypic description and a discussion of genetic heterogeneity of familial paragangliomas, see PGL1 (168000). [from OMIM]

MedGen UID:
1681559
Concept ID:
C5193112
Neoplastic Process
16.

Spastic ataxia 9, autosomal recessive

MedGen UID:
1680026
Concept ID:
C5193100
Disease or Syndrome
17.

Galloway-Mowat syndrome 7

Galloway-Mowat syndrome-7 (GAMOS7) is an autosomal recessive disorder characterized by developmental delay, microcephaly, and early-onset nephrotic syndrome (summary by Rosti et al., 2017). For a general phenotypic description and a discussion of genetic heterogeneity of GAMOS, see GAMOS1 (251300). [from OMIM]

MedGen UID:
1679283
Concept ID:
C5193044
Disease or Syndrome
18.

Neurodevelopmental disorder and language delay with or without structural brain abnormalities

Neurodevelopmental disorder and language delay with or without structural brain abnormalities (NEDLBA) is characterized by global developmental delay apparent from infancy. The phenotype is highly variable: patients may have hypotonia, behavioral abnormalities, and abnormalities on brain imaging, including enlarged ventricles, thin corpus callosum, and sometimes small brainstem. Many develop seizures, sometimes refractory, and some may have nonspecific dysmorphic features. Intellectual impairment can vary from mild to profound, and some patients may benefit from special education and respond well to speech therapy (summary by Reynhout et al., 2019). [from OMIM]

MedGen UID:
1677130
Concept ID:
C5193048
Disease or Syndrome
19.

Galloway-Mowat syndrome 8

Galloway-Mowat syndrome-8 is an autosomal recessive disorder characterized by impaired psychomotor development, poor overall growth with microcephaly, and early-onset progressive nephrotic syndrome associated with focal segmental glomerulosclerosis on renal biopsy. Some patients may have seizures, and some may die in childhood (summary by Fujita et al., 2018). For a general phenotypic description and a discussion of genetic heterogeneity of GAMOS, see GAMOS1 (251300). [from OMIM]

MedGen UID:
1675829
Concept ID:
C5193045
Disease or Syndrome
20.

Fetal akinesia deformation sequence 4

Fetal akinesia deformation sequence-4 (FADS4) is an autosomal recessive disorder characterized by decreased fetal movements due to impaired neuromuscular function, resulting in significant congenital contractures and death in utero or soon after birth (summary by Bonnin et al., 2018). For a general phenotypic description and a discussion of genetic heterogeneity of FADS, see 208150. [from OMIM]

MedGen UID:
1675450
Concept ID:
C4760578
Disease or Syndrome
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