Ataxia, and Recurrent urinary tract infections

• Global developmental delay
• Generalized hypotonia
• Ataxia
• Abnormal facial shape
• Ptosis

SOURCES: OMIM MENDELIAN

Purine nucleoside phosphorylase (PNP) deficiency is a disorder of purine metabolism characterized by progressive immunodeficiency leading to recurrent and opportunistic infections, autoimmunity and malignancy as well as neurologic manifestations.

PURINE NUCLEOSIDE PHOSPHORYLASE DEFICIENCY Is also known as pnp deficiency|pnpase deficiency|nucleoside phosphorylase deficiency

• Intellectual disability
• Generalized hypotonia
• Ataxia
• Failure to thrive
• Muscular hypotonia

SOURCES: ORPHANET OMIM MENDELIAN

Posterior column ataxia - retinitis pigmentosa is characterized by the association of progressive sensory ataxia and retinitis pigmentosa.

POSTERIOR COLUMN ATAXIA-RETINITIS PIGMENTOSA SYNDROME Is also known as pcarp|autosomal recessive posterior column ataxia and retinitis pigmentosa

• Intellectual disability
• Seizures
• Generalized hypotonia
• Scoliosis
• Ataxia

SOURCES: ORPHANET MESH OMIM MENDELIAN

Hereditary folate malabsorption (HFM) is an inherited disorder of folate transport characterized by a systemic and central nervous system (CNS) folate deficiency manifesting as megaloblastic anemia, failure to thrive, diarrhea and/or oral mucositis, immunologic dysfunction and neurological disorders.

HEREDITARY FOLATE MALABSORPTION Is also known as congenital folate malabsorption

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

SOURCES: MESH ORPHANET OMIM MENDELIAN

Wolfram syndrome (WS) also known as DIDMOAD, is a neurodegenerative disorder characterized by type I diabetes mellitus (DM), diabetes insipidus (DI), sensorineural deafness (D), bilateral optical atrophy (OA) and neurological signs. Other related problems are urinary tract atony, ataxia, peripheral neuropathy, psychiatric disorders and/or seizures. 2 types of WS may be distinguished: type 1 and type 2 (WS1 and WS2).

WOLFRAM SYNDROME Is also known as didmoad syndrome|diabetes insipidus-diabetes mellitus-optic atrophy-deafness syndrome

• Intellectual disability
• Seizures
• Ataxia
• Nystagmus
• Sensorineural hearing impairment

SOURCES: ORPHANET OMIM MENDELIAN

X-linked agammaglobulinemia (XLA) is a clinically variable form of isolated agammaglobulinemia, an inherited immunodeficiency disorder (see this term), and is characterized in affected males by recurrent bacterial infections during infancy.

X-LINKED AGAMMAGLOBULINEMIA Is also known as imd1|bruton-type agammaglobulinemia|bruton type agammaglobulinemia|agammaglobulinemia, x-linked, type 1|immunodeficiency 1|btk-deficiency|agmx1

• Short stature
• Hearing impairment
• Ataxia
• Neoplasm
• Failure to thrive

SOURCES: ORPHANET OMIM MENDELIAN

Isolated aniridia is a congenital bilateral ocular malformation characterized by the complete or partial absence of the iris.

ISOLATED ANIRIDIA Is also known as an2, formerly|aniridia ii, formerly|an

• Intellectual disability
• Global developmental delay
• Generalized hypotonia
• Hearing impairment
• Microcephaly

SOURCES: OMIM ORPHANET MENDELIAN

Nijmegen breakage syndrome is a rare genetic disease presenting at birth with microcephaly, dysmorphic facial features, becoming more noticeable with age, growth delay, and later-onset complications such as malignancies and infections.

NIJMEGEN BREAKAGE SYNDROME Is also known as microcephaly-immunodeficiency-lymphoreticuloma syndrome|ataxia-telangiectasia variant v1|microcephaly with normal intelligence, immunodeficiency, and lymphoreticular malignancies|at-v1|berlin breakage syndrome|ataxia-telangiectasia, variant 1|seemanova sy

• Intellectual disability
• Global developmental delay
• Short stature
• Microcephaly
• Ataxia

SOURCES: ORPHANET OMIM MESH MENDELIAN

Combined methylmalonic aciduria (MMA) and homocystinuria is a genetically heterogeneous disorder of cobalamin (cbl; vitamin B12) metabolism. The defect causes decreased levels of the coenzymes adenosylcobalamin (AdoCbl) and methylcobalamin (MeCbl), which results in decreased activity of the respective enzymes methylmalonyl-CoA mutase (MUT ) and methyltetrahydrofolate:homocysteine methyltransferase, also known as methionine synthase (MTR ). Different forms of the disorder have been classified according to complementation groups of cells in vitro: cblC, cblD (OMIM ), cblF (OMIM ), and cblJ (OMIM ).Isolated methylmalonic acidurias have also been classified by complementation groups: MMA 'mut' (OMIM ) is caused by mutation in the MUT gene on chromosome 6p21; MMA cblA (OMIM ) is caused by mutation in the MMAA gene (OMIM ) on 4q31; and MMA cblB (OMIM ) is caused by mutation in the MMAB gene (OMIM ) on 12q24.Methylmalonic aciduria and homocystinuria, cblC type, is the most common inborn error of vitamin B12 (cobalamin) metabolism, with about 250 known cases (Lerner-Ellis et al., 2006). Affected individuals may have developmental, hematologic, neurologic, metabolic, ophthalmologic, and dermatologic clinical findings. Although considered a disease of infancy or childhood, some individuals develop symptoms in adulthood (Rosenblatt et al., 1997).

METHYLMALONIC ACIDURIA AND HOMOCYSTINURIA, CBLC TYPE; MAHCC Is also known as vitamin b12 metabolic defect with combined deficiency of methylmalonyl-coa mutase and homocysteine:methyltetrahydrofolate methyltransferase|methylmalonic aciduria and homocystinuria, vitamin b12-responsive|methylmalonic acidemia and homocystinuria, cblc t

• Intellectual disability
• Seizures
• Global developmental delay
• Generalized hypotonia
• Hearing impairment

SOURCES: ORPHANET OMIM MENDELIAN

Short-rib thoracic dysplasia (SRTD) with or without polydactyly refers to a group of autosomal recessive skeletal ciliopathies that are characterized by a constricted thoracic cage, short ribs, shortened tubular bones, and a 'trident' appearance of the acetabular roof. SRTD encompasses Ellis-van Creveld syndrome (EVC) and the disorders previously designated as Jeune syndrome or asphyxiating thoracic dystrophy (ATD), short rib-polydactyly syndrome (SRPS), and Mainzer-Saldino syndrome (MZSDS). Polydactyly is variably present, and there is phenotypic overlap in the various forms of SRTDs, which differ by visceral malformation and metaphyseal appearance. Nonskeletal involvement can include cleft lip/palate as well as anomalies of major organs such as the brain, eye, heart, kidneys, liver, pancreas, intestines, and genitalia. Some forms of SRTD are lethal in the neonatal period due to respiratory insufficiency secondary to a severely restricted thoracic cage, whereas others are compatible with life (summary by Huber and Cormier-Daire, 2012 and Schmidts et al., 2013).There is phenotypic overlap with the cranioectodermal dysplasias (Sensenbrenner syndrome; see CED1, {218330}).For a discussion of genetic heterogeneity of short-rib thoracic dysplasia, see SRTD1 (OMIM ).

SHORT-RIB THORACIC DYSPLASIA 9 WITH OR WITHOUT POLYDACTYLY; SRTD9 Is also known as mzsds|mainzer-saldino syndrome|renal dysplasia, retinal pigmentary dystrophy, cerebellar ataxia, and skeletal dysplasia|conorenal syndrome

• Seizures
• Global developmental delay
• Short stature
• Microcephaly
• Ataxia

SOURCES: OMIM MENDELIAN