Ataxia, and Tetralogy of Fallot

Low match NEURODEGENERATION DUE TO 3-HYDROXYISOBUTYRYL-COA HYDROLASE DEFICIENCY

Neurodegeneration due to 3-hydroxyisobutyryl-CoA hydrolase deficiency is characterised by delayed motor development, hypotonia and progressive neurodegeneration. To date, it has been described in four boys. The syndrome is caused by mutations affecting the two alleles of the HIBCH gene, encoding 3-hydroxyisobutyryl-CoA hydrolase. The mode of transmission has not yet been established.

NEURODEGENERATION DUE TO 3-HYDROXYISOBUTYRYL-COA HYDROLASE DEFICIENCY Is also known as beta-hydroxyisobutyryl coa deacylase deficiency|valine metabolic defect|methacrylic aciduria|hibch deficiency|methacrylic acid toxicity

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

SOURCES: MESH OMIM ORPHANET 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

Low match ALAGILLE SYNDROME DUE TO A NOTCH2 POINT MUTATION

ALAGILLE SYNDROME DUE TO A NOTCH2 POINT MUTATION Is also known as syndromic bile duct paucity due to a notch2 point mutation|arteriohepatic dysplasia due to a notch2 point mutation|alagille-watson syndrome due to a notch2 point mutation

• Hypertelorism
• Failure to thrive
• Cognitive impairment
• Hypertension
• Hepatomegaly

SOURCES: ORPHANET OMIM MENDELIAN

Low match FANCONI ANEMIA

Fanconi anemia (FA) is a hereditary DNA repair disorder characterized by progressive pancytopenia with bone marrow failure, variable congenital malformations and predisposition to develop hematological or solid tumors.

FANCONI ANEMIA Is also known as fanconi pancytopenia|fanconi anemia|fa

• Intellectual disability
• Global developmental delay
• Short stature
• Hearing impairment
• Microcephaly

SOURCES: OMIM ORPHANET MENDELIAN

Low match MATERNAL PHENYLKETONURIA

Maternal phenylketonuria (PKU) is a rare disorder of phenylalanine metabolism (see this term), an inborn error of amino acid metabolism, characterized by the development of microcephaly, growth retardation, congenital heart disease, facial dysmorphism and intellectual disability in nonphenylketonuric offspring of mothers with excess phenylalanine (Phe) concentrations.

MATERNAL PHENYLKETONURIA Is also known as phenylalanine hydroxylase deficiency|phenylketonuric embryopathy|maternal pku|pah deficiency|folling disease|maternal hyperphenylalaninemia|hyperphenylalaninemic embryopathy|oligophrenia phenylpyruvica

• Intellectual disability
• Seizures
• Global developmental delay
• Microcephaly
• Growth delay

SOURCES: ORPHANET OMIM MENDELIAN

Low match NEUROFIBROMATOSIS TYPE 1 DUE TO NF1 MUTATION OR INTRAGENIC DELETION

Neurofibromatosis type I is an autosomal dominant disorder characterized by cafe-au-lait spots, Lisch nodules in the eye, and fibromatous tumors of the skin. Individuals with the disorder have increased susceptibility to the development of benign and malignant tumors. NF1 is sometimes referred to as 'peripheral neurofibromatosis.' The worldwide incidence of NF1 is 1 in 2,500 to 1 in 3,000 individuals (reviews by Shen et al., 1996 and Williams et al., 2009).Type II neurofibromatosis (NF2 ) is a genetically distinct disorder caused by mutation in the gene encoding merlin (NF2 ) on chromosome 22q12. NF2, sometimes known as 'central neurofibromatosis,' is characterized by bilateral acoustic neuroma and meningioma, but few skin lesions or neurofibromas (Rouleau et al., 1993).Some patients with homozygous or compound heterozygous mutations in mismatch repair genes (see, e.g., MLH1; {120436} and MSH2; {609309}) have a phenotype characterized by early onset malignancies and mild features of NF1, especially cafe-au-lait spots; this is known as the mismatch repair cancer syndrome (OMIM ), sometimes referred to as brain tumor-polyposis syndrome-1 or Turcot syndrome. These patients typically do not have germline mutations in the NF1 gene, although a study by Wang et al. (2003) suggested that biallelic mutations in mismatch repair genes may cause somatic mutations in the NF1 gene, perhaps resulting in isolated features resembling NF1.See also Legius syndrome (OMIM ), a genetically distinct disorder with a similar phenotype to NF1.

NEUROFIBROMATOSIS TYPE 1 DUE TO NF1 MUTATION OR INTRAGENIC DELETION Is also known as von recklinghausen disease due to nf1 mutation or intragenic deletion|neurofibromatosis, peripheral type|von recklinghausen disease

• Intellectual disability
• Seizures
• Short stature
• Scoliosis
• Hypertelorism

SOURCES: ORPHANET OMIM MENDELIAN

Low match GIANT CELL ARTERITIS

Giant cell arteritis (GCA) is a large vessel vasculitis predominantly involving the arteries originating from the aortic arch and especially the extracranial branches of the carotid arteries.

GIANT CELL ARTERITIS Is also known as horton disease|giant cell arteritis|temporal arteritis|cranial arteritis|polymyalgia rheumatica|gca

• Hearing impairment
• Ataxia
• Nystagmus
• Muscle weakness
• Ptosis

SOURCES: OMIM ORPHANET MENDELIAN

Low match WILLIAMS SYNDROME

Williams syndrome is a rare genetic multisystemic neurodevelopmental disorder characterized by a distinct facial appearance, cardiac anomalies (most frequently supravalvular aortic stenosis), cognitive and developmental abnormalities, and connective tissue abnormalities (such as joint laxity)

WILLIAMS SYNDROME Is also known as deletion 7q11.23|williams syndrome|williams-beuren syndrome|chromosome 7q11.23 deletion syndrome, 1.5- to 1.8-mb|wms|monosomy 7q11.23|ws

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

SOURCES: OMIM ORPHANET MESH MENDELIAN

Low match FATAL MITOCHONDRIAL DISEASE DUE TO COMBINED OXIDATIVE PHOSPHORYLATION DEFECT TYPE 3

Combined oxidative phosphorylation deficiency type 3 is an extremely rare clinically heterogenous disorder described in about 5 patients to date. Clinical signs included hypotonia, lactic acidosis, and hepatic insufficiency, with progressive encephalomyopathy or hypertrophic cardiomyopathy.

FATAL MITOCHONDRIAL DISEASE DUE TO COMBINED OXIDATIVE PHOSPHORYLATION DEFECT TYPE 3 Is also known as fatal mitochondrial disease due to coxpd3|encephalomyopathy, respiratory failure, and lactic acidosis|concentric cardiomyopathy, hypotonia, and lactic acidosis

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

SOURCES: OMIM MESH ORPHANET MENDELIAN