Hyperreflexia, and High forehead

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

SOURCES: OMIM MENDELIAN

Giant axonal neuropathy (GAN) is a severe, slowly progressive neurodegenerative disorder characterized by progressive motor and sensory peripheral neuropathy, central nervous system involvement (including pyramidal and cerebellar signs), and characteristic kinky hair in most cases.

GIANT AXONAL NEUROPATHY Is also known as gan

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

SOURCES: ORPHANET OMIM MENDELIAN

Neonatal adrenoleukodystrophy (NALD) is the variant of intermediate severity of the PBD-Zellweger syndrome spectrum (PBD-ZSS; see this term), charcterized by hypotonia, leukodystrophy, and vision and sensorineural hearing deficiencies. Phenotypic overlap is seen between NALD and infantile Refsum disease (IRD) (see this term).

NEONATAL ADRENOLEUKODYSTROPHY Is also known as nald

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

SOURCES: OMIM ORPHANET MENDELIAN

NMIHBA is a severe, autosomal recessive, neurodevelopmental, and neurodegenerative disorder characterized by global developmental delay apparent from infancy and profound intellectual disability. Affected individuals have microcephaly with accompanying dysmorphic features, truncal hypotonia, peripheral spasticity, and lack of independent ambulation or speech acquisition. Brain imaging shows variable abnormalities, including cortical atrophy, thin corpus callosum, cerebellar hypoplasia, and delayed myelination (summary by Zollo et al., 2017).

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

SOURCES: OMIM MENDELIAN

X-linked Dandy-Walker malformation with intellectual disability, basal ganglia disease and seizures (XDIBS), or Pettigrew syndrome is a central nervous system malformation characterized by severe intellectual deficit, early hypotonia with progression to spasticity and contractures, choreoathetosis, seizures, dysmorphic face (long face with prominent forehead), and brain imaging abnormalities such as Dandy-Walker malformation (see this term), and iron deposition.

X-LINKED INTELLECTUAL DISABILITY-DANDY-WALKER MALFORMATION-BASAL GANGLIA DISEASE-SEIZURES SYNDROME Is also known as mental retardation, x-linked, with dandy-walker malformation, basal ganglia disease, and seizures|mrxs21|mrx59|mental retardation, x-linked 59|mrxs5|mental retardation, x-linked, syndromic, fried type|mrxsf|mental retardation, x-linked, syndromic 21|menta

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

SOURCES: ORPHANET OMIM MENDELIAN

X-linked lissencephaly with abnormal genitalia (XLAG) is a rare, genetic, central nervous system malformation disorder characterized, in males, by lissencephaly (with posterior predominance and moderately thickened cortex), complete absence of corpus callosum, neonatal-onset (mainly perinatal) intractable seizures, postnatal microcephaly, severe hypotonia, poor responsiveness and hypogonadism (micropenis, hypospadias, cryptorchidism, small scrotal sac). Defective temperature regulation and chronic diarrhea may be additionally observed.

X-LINKED LISSENCEPHALY WITH ABNORMAL GENITALIA Is also known as xlisg|xlag (x-linked lissencephaly with abnormal genitalia) syndrome|lissencephaly, x-linked, with ambiguous genitalia|x-linked lissencephaly-corpus callosum agenesis-genital anomalies syndrome|xlag|x-linked lissencephaly with ambiguous genitalia

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

SOURCES: OMIM MESH ORPHANET MENDELIAN

Autosomal dominant mental retardation-44 is characterized by mildly delayed global development, resulting in variable intellectual deficits or learning difficulties, distinctive facial features, and abnormalities of the fingers, particularly brachydactyly, tapering fingers, and broad interphalangeal joints. Most patients also have microcephaly; additional features are highly variable (summary by Ba et al., 2016).

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

SOURCES: OMIM ORPHANET MENDELIAN

Woodhouse-Sakati syndrome is a multisystemic disorder characterized by hypogonadism, alopecia, diabetes mellitus, intellectual deficit and extrapyramidal signs with choreoathetoid movements and dystonia.

WOODHOUSE-SAKATI SYNDROME Is also known as hypogonadism, alopecia, diabetes mellitus, mental retardation, deafness, and extrapyramidal syndrome|extrapyramidal disorder, progressive, with primary hypogonadism, mental retardation, and alopecia|diabetes-hypogonadism-deafness-intellectual disability s

• Intellectual disability
• Seizures
• Hearing impairment
• Scoliosis
• Hypertelorism

SOURCES: ORPHANET OMIM MESH MENDELIAN

Sotos syndrome is a rare multisystemic genetic disorder characterized by a typical facial appearance, overgrowth of the body in early life with macrocephaly, and mild to severe intellectual disability.

SOTOS SYNDROME Is also known as cerebral gigantism

• Intellectual disability
• Seizures
• Global developmental delay
• Scoliosis
• Hypertelorism

SOURCES: ORPHANET MENDELIAN

The neonatal form of carnitine palmitoyltransferase II (CPT II) deficiency (see this term), an inherited disorder that affects mitochondrial oxidation of long chain fatty acids (LCFA), is the lethal form of the disease which presents with multisystem failure.

CARNITINE PALMITOYL TRANSFERASE II DEFICIENCY, NEONATAL FORM Is also known as carnitine palmitoyl transferase deficiency type 2, lethal systemic form|carnitine palmitoyltransferase ii deficiency, neonatal|cpt2 deficiency, lethal neonatal|carnitine palmitoyl transferase ii deficiency, lethal systemic form|carnitine palmitoyltransfer

• Seizures
• Generalized hypotonia
• Microcephaly
• Muscular hypotonia
• Cataract

SOURCES: MESH OMIM ORPHANET MENDELIAN