Ataxia, and Spina bifida

Low match JOUBERT SYNDROME 17; JBTS17

• Intellectual disability
• Global developmental delay
• Ataxia
• Cognitive impairment
• Syndactyly

SOURCES: OMIM MENDELIAN

Low match ARNOLD-CHIARI MALFORMATION TYPE II

Arnold-Chiari malformation type II is a rare, central nervous system malformation characterized by caudal displacement of the cerebellum, pons, medulla and fourth ventricle through the foramen magnum into the spinal canal, and is typically associated with myelomeningocele. Variable other central nervous system abnormalities might be present (partial or complete agenesis of the corpus callosum, a small fourth ventricle, obstructive hydrocephalus, falx and tentorium defects, and polygyria). Symptoms include hypotonia, apnea with cyanosis, dysphagia, opisthotonus, nystagmus, spasticity, ataxia, and occipital headache.

ARNOLD-CHIARI MALFORMATION TYPE II Is also known as cm2|arnold-chiari malformation|chiari malformation type ii|chiari malformation type 2|arnold-chiari malformation type 2

• Generalized hypotonia
• Ataxia
• Nystagmus
• Muscular hypotonia
• Spasticity

SOURCES: OMIM ORPHANET MENDELIAN

Low match NEUROCUTANEOUS MELANOCYTOSIS

Neurocutaneous melanocytosis (NCM) is a rare congenital neurological disorder characterized by abnormal aggregations of nevomelanocytes within the central nervous system (leptomeningeal melanocytosis) associated with large or giant congenital melanocytic nevi (CMN; see this term). NCM can be asymptomatic or present as variably severe and progressive neurological impairment, sometimes resulting in death.

NEUROCUTANEOUS MELANOCYTOSIS Is also known as neurocutaneous melanosis|neuromelanosis|ncm

• Intellectual disability
• Seizures
• Global developmental delay
• Generalized hypotonia
• Ataxia

SOURCES: MESH OMIM ORPHANET MENDELIAN

Low match JOUBERT SYNDROME 14; JBTS14

Joubert syndrome-14 is an autosomal recessive developmental disorder characterized by severe mental retardation, hypoplasia of the cerebellar vermis and molar tooth sign (MTS) on brain imaging, hypotonia, abnormal breathing pattern in infancy, and dysmorphic facial features. Additional findings can include renal cysts, abnormal eye movements, and postaxial polydactyly (summary by Boycott et al., 2007 and Huang et al., 2011).For a phenotypic description and a discussion of genetic heterogeneity of Joubert syndrome, see {213300}.

• Intellectual disability
• Global developmental delay
• Generalized hypotonia
• Ataxia
• Growth delay

SOURCES: OMIM MENDELIAN

Low match JOUBERT SYNDROME 1; JBTS1

Joubert syndrome is a clinically and genetically heterogeneous group of disorders characterized by hypoplasia of the cerebellar vermis with the characteristic neuroradiologic 'molar tooth sign,' and accompanying neurologic symptoms, including dysregulation of breathing pattern and developmental delay. Other variable features include retinal dystrophy and renal anomalies (Saraiva and Baraitser, 1992; Valente et al., 2005). Genetic Heterogeneity of Joubert SyndromeSee also JBTS2 (OMIM ), caused by mutation in the TMEM216 gene (OMIM ) on chromosome 11q13; JBTS3 (OMIM ), caused by mutation in the AHI1 gene (OMIM ) on chromosome 6q23; JBTS4 (OMIM ), caused by mutation in the NPHP1 gene (OMIM ) on chromosome 2q13; JBTS5 (OMIM ), caused by mutation in the CEP290 gene, also called NPHP6 (OMIM ), on chromosome 12q21.32; JBTS6 (OMIM ), caused by mutation in the TMEM67 gene (OMIM ) on chromosome 8q21; JBTS7 (OMIM ), caused by mutation in the RPGRIP1L gene (OMIM ) on chromosome 16q12.2; JBTS8 (OMIM ), caused by mutation in the ARL13B (OMIM ) on chromosome 3q11.2; JBTS9 (OMIM ), caused by mutation in the CC2D2A gene (OMIM ) on chromosome 4p15.3; JBTS10 (OMIM ), caused by mutation in the CXORF5 gene (OMIM ) on chromosome Xp22.3; JBTS11 (see {613820}), caused by mutation in the TTC21B gene (OMIM ) on chromosome 2q24; JBTS12 (see {200990}), caused by mutation in the KIF7 gene (OMIM ) on chromosome 15q26; JBTS13 (OMIM ), caused by mutation in the TCTN1 gene (OMIM ) on chromosome 12q24; JBTS14 (OMIM ), caused by mutation in the TMEM237 gene (OMIM ) on chromosome 2q33; JBTS15 (OMIM ), caused by mutation in the CEP41 gene (OMIM ) on chromosome 7q32; JBTS16 (OMIM ), caused by mutation in the TMEM138 gene (OMIM ) on chromosome 11q; JBTS17 (OMIM ), caused by mutation in the C5ORF42 gene (OMIM ) on chromosome 5p13; JBTS18 (OMIM ), caused by mutation in the TCTN3 gene (OMIM ) on chromosome 10q24; JBTS19 (see {614844}), caused by mutation in the ZNF423 gene (OMIM ) on chromosome 16q12; JBTS20 (OMIM ), caused by mutation in the TMEM231 gene (OMIM ) on chromosome 16q23; JBTS21 (OMIM ), caused by mutation in the CSPP1 gene (OMIM ) on chromosome 8q13; JBTS22 (OMIM ), caused by mutation in the PDE6D gene (OMIM ) on chromosome 2q37; JBTS23 (OMIM ), caused by mutation in the KIAA0586 gene (OMIM ) on chromosome 14q23; JBTS24 (OMIM ), caused by mutation in the TCTN2 gene (OMIM ) on chromosome 12q24; JBTS25 (OMIM ), caused by mutation in the CEP104 gene (OMIM ) on chromosome 1p36; JBTS26 (OMIM ), caused by mutation in the KIAA0556 gene (OMIM ) on chromosome 16p12; JBTS27 (OMIM ), caused by mutation in the B9D1 gene (OMIM ) on chromosome 17p11; JBTS28 (OMIM ), caused by mutation in the MKS1 gene (OMIM ) on chromosome 17q23; JBTS29 (see {617562}), caused by mutation in the TMEM107 gene (OMIM ) on chromosome 17p13; JBTS30 (OMIM ), caused by mutation in the ARMC9 gene (OMIM ) on chromosome 2q37; JBTS31 (OMIM ), caused by mutation in the CEP120 gene (OMIM ) on chromosome 5q23; JBTS32 (OMIM ), caused by mutation in the SUFU gene (OMIM ) on chromosome 10q24; and JBTS33 (OMIM ), caused by mutation in the PIBF1 gene (OMIM ) on chromosome 13q21.

JOUBERT SYNDROME 1; JBTS1 Is also known as cerebelloparenchymal disorder iv|jbts|cpd4|joubert syndrome|cerebellooculorenal syndrome 1|cors1|joubert-boltshauser syndrome

• Intellectual disability
• Global developmental delay
• Generalized hypotonia
• Ataxia
• Micrognathia

SOURCES: OMIM MENDELIAN

Low match KNOBLOCH SYNDROME

Knobloch syndrome (KS) is defined by vitreoretinal and macular degeneration, and occipital encephalocele.

KNOBLOCH SYNDROME Is also known as retinal detachment and occipital encephalocele|knobloch-layer syndrome|retinal detachment-occipital encephalocele syndrome|kno

• Seizures
• Global developmental delay
• Generalized hypotonia
• Ataxia
• Nystagmus

SOURCES: OMIM MESH ORPHANET MENDELIAN

Low match JOUBERT SYNDROME WITH OCULORENAL DEFECT

Joubert syndrome with oculorenal defect is a rare subtype of Joubert syndrome and related disorders (JSRD, see this term) characterized by the neurological features of JS associated with both renal and ocular disease.

JOUBERT SYNDROME WITH OCULORENAL DEFECT Is also known as coloboma, chorioretinal, with cerebellar vermis aplasia|arima syndrome|js-or|js type b|cerebellooculorenal syndrome|joubert syndrome with senior-loken syndrome|cors|joubert syndrome with bilateral chorioretinal coloboma|cerebrooculohepatorenal syndrome|de

• Intellectual disability
• Seizures
• Global developmental delay
• Generalized hypotonia
• Scoliosis

SOURCES: OMIM ORPHANET MENDELIAN

Low match HARTNUP DISEASE

Hartnup disease is a rare metabolic disorder belonging to the neutral aminoacidurias and characterized by abnormal renal and gastrointestinal transport of neutral amino acids (tryptophan, alanine, asparagine, glutamine, histidine, isoleucine, leucine, phenylalanine, serine, threonine, tyrosine and valine).

HARTNUP DISEASE Is also known as aminoaciduria, hartnup type|hartnup disease|hartnup disorder

• Intellectual disability
• Seizures
• Global developmental delay
• Short stature
• Generalized hypotonia

SOURCES: OMIM MESH ORPHANET MENDELIAN

Low match OROFACIODIGITAL SYNDROME TYPE 6

Joubert syndrome with orofaciodigital defect (or oral-facial-digital syndrome type 6, OFD6) is a very rare subtype of Joubert syndrome and related disorders (JSRD, see this term) characterized by the neurological features of JS associated with orofacial anomalies and often polydactyly.

OROFACIODIGITAL SYNDROME TYPE 6 Is also known as vÁradi syndrome|polydactyly-cleft lip/palate-psychomotor retardation syndrome|polydactyly, cleft lip/palate or lingual lump, and psychomotor retardation|vÁradi-papp syndrome|joubert syndrome with orofaciodigital defect|oral-facial-digital syndrome type 6|

• Intellectual disability
• Seizures
• Global developmental delay
• Short stature
• Generalized hypotonia

SOURCES: ORPHANET OMIM MENDELIAN

Low match VELOCARDIOFACIAL SYNDROME

VELOCARDIOFACIAL SYNDROME Is also known as chromosome 22q11.2 deletion syndrome|shprintzen vcf syndrome|vcf syndrome|vcfs

• Intellectual disability
• Seizures
• Global developmental delay
• Short stature
• Generalized hypotonia

SOURCES: OMIM MENDELIAN