Global developmental delay, and Pes planus

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

SOURCES: OMIM MENDELIAN

• Intellectual disability
• Seizures
• Global developmental delay
• Cleft palate
• Cognitive impairment

SOURCES: OMIM MENDELIAN

Autosomal recessive congenital cerebellar ataxia due to MGLUR1 deficiency is a rare, genetic, slowly progressive neurodegenerative disease resulting from MGLUR1 deficiency characterized by global developmental delay (beginning in infancy), mild to severe intellectual deficit with poor or absent speech, moderate to severe stance and gait ataxia, pyramidal signs (e.g. hyperreflexia) and mild dysdiadochokinesia, dysmetria, tremors, and/or dysarthria. Oculomotor signs, such as nystagmus, strabismus, ptosis and hypometric saccades, may also be associated. Brain imaging reveals progressive, generalized, moderate to severe cerebellar atrophy, inferior vermian hypoplasia, and/or constitutionally small brain.

AUTOSOMAL RECESSIVE CONGENITAL CEREBELLAR ATAXIA DUE TO MGLUR1 DEFICIENCY Is also known as autosomal recessive spinocerebellar ataxia type 13|scar13|autosomal recessive congenital cerebellar ataxia due to metabotropic glutamate receptor 1 deficiency

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

SOURCES: ORPHANET OMIM MENDELIAN

Proteasome-associated autoinflammatory syndrome-2 is an autosomal dominant disorder with onset in early infancy. Affected individuals develop severe inflammatory neutrophilic dermatitis, autoimmunity, and variable immunodeficiency (summary by Poli et al., 2018).For a discussion of genetic heterogeneity of PRAAS, see PRAAS1 (OMIM ).

• Seizures
• Global developmental delay
• Short stature
• Brachydactyly
• Fever

SOURCES: OMIM MENDELIAN

Dysequilibrium syndrome (DES) is a non-progressive cerebellar disorder characterized by ataxia associated with an intellectual disability, delayed ambulation and cerebellar hypoplasia.

DYSEQUILIBRIUM SYNDROME Is also known as cerebellar ataxia-intellectual disability-dysequilibrium syndrome syndrome|cerebellar hypoplasia, vldlr-associated|non-progressive cerebellar ataxia-intellectual disability syndrome|cerebellar ataxia and mental retardation with or without quadrupedal loco

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

SOURCES: OMIM ORPHANET MENDELIAN

MRD6 is an autosomal dominant neurodevelopmental disorder characterized by delayed psychomotor development and intellectual disability of variable severity. Additional features may include seizures, hypotonia, abnormal movements, such as dystonia, and autistic features. Some patients may have structural malformations of cortical development on brain imaging. The phenotype is highly variable and reflects a spectrum of neurodevelopmental abnormalities that range from mild intellectual disability without seizures to an encephalopathy (summary by Platzer et al., 2017).

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

SOURCES: OMIM MENDELIAN

NEDDFL is a neurodevelopmental disorder characterized by delayed psychomotor development and intellectual disability, poor growth with small head size, dysmorphic facial features, and mild abnormalities of the hands and feet (summary by Stankiewicz et al., 2017).

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

SOURCES: OMIM MENDELIAN

• Seizures
• Global developmental delay
• Generalized hypotonia
• Microcephaly
• Failure to thrive

SOURCES: OMIM MENDELIAN

Familial hypertryptophanemia is characterized by intellectual deficit associated with behavioral problems: periodic mood swings, exaggerated affective responses and abnormal sexual behavior. Twelve cases have been reported so far. Congenital abnormalities in tryptophan metabolism appear to be responsible for the tryptophanemia and tryptophanuria.

HYPERTRYPTOPHANEMIA Is also known as hypertryptophanemia, familial

• Intellectual disability
• Global developmental delay
• Hypertelorism
• Strabismus
• Sensorineural hearing impairment

SOURCES: ORPHANET MESH OMIM MENDELIAN

Mucolipidosis type III gamma (ML 3 gamma) is a very rare lysosomal disease, that has most often been observed in the Middle East, characterized by a progressive slowing of the growth rate in early childhood; stiffness and pain in shoulders, hips, and finger joints; a gradual, mild coarsening of facial features; and by a slower progression, milder clinical course and longer life expectancy than that seen in mucolipidosis type II and mucolipidosis type III alpha/beta. Cognitive function is normal or only slightly impaired and retinitis pigmentosa has been reported in a few patients. Many survive into early adulthood, but ultimately succumb to cardiorespiratory insufficiency.

MUCOLIPIDOSIS TYPE III GAMMA Is also known as ml iii gamma|mucolipidosis type 3 gamma|mucolipidosis iii, iranian variant form|ml 3 gamma|mucolipidosis iiic|ml iiic|mucolipidosis iii, complementation group c|mucolipidosis iii, variant form

• Global developmental delay
• Short stature
• Scoliosis
• Pain
• Flexion contracture

SOURCES: MESH OMIM ORPHANET MENDELIAN