Macrocephaly, and Everted lower lip vermilion

SOTOS SYNDROME 2; SOTOS2 Is also known as malan syndrome

• Intellectual disability
• Generalized hypotonia
• Scoliosis
• Nystagmus
• Strabismus

SOURCES: OMIM MENDELIAN

NEDMAGA is a neurodevelopmental disorder characterized by infantile-onset global developmental delay with severe to profound intellectual disability, mildly delayed walking with broad-based and unsteady gait, and absence of meaningful language. Patients have features of autism, with repetitive behaviors and poor communication, but usually are socially reactive and have a happy demeanor. More variable neurologic features include mild seizures, spasticity, and peripheral neuropathy (summary by Palmer et al., 2017).

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

SOURCES: OMIM MENDELIAN

This form of nonsyndromic X-linked mental retardation is characterized by a spectrum of cognitive neurologic impairments or disabilities ranging from moderate mental retardation to high-functioning autism. Males are typically severely affected, but some carrier females may manifest milder deficits (summary by Piton et al., 2008).

MENTAL RETARDATION, X-LINKED 21; MRX21 Is also known as mental retardation, x-linked 34|mrx34

• Intellectual disability
• Seizures
• Short stature
• Generalized hypotonia
• Hypertelorism

SOURCES: OMIM MENDELIAN

Cranioectodermal dysplasia (CED), also known as Sensenbrenner syndrome, is a rare autosomal recessive heterogeneous ciliopathy that is primarily characterized by skeletal abnormalities, including craniosynostosis, narrow rib cage, short limbs, and brachydactyly, and ectodermal defects. Nephronophthisis leading to progressive renal failure, hepatic fibrosis, heart defects, and retinitis pigmentosa have also been described (summary by Arts et al., 2011).For discussion of genetic heterogeneity of cranioectodermal dysplasia, see CED1 (OMIM ).

• Short stature
• Micrognathia
• Brachydactyly
• Macrocephaly
• Frontal bossing

SOURCES: OMIM MENDELIAN

RIN2 syndrome, formerly known as macrocephaly, alopecia, cutis laxa and scoliosis (MACS) syndrome, is a very rare inherited connective tissue disorder characterized by macrocephaly, sparse scalp hair, soft-redundant and hyperextensible skin, joint hypermobility, and scoliosis. Patients have progressive facial coarsening with downslanted palpebral fissures, upper eyelid fullness/infraorbital folds, thick/everted vermillion, gingival overgrowth and abnormal position of the teeth. Rarer manifestations such as abnormal high-pitched voice, bronchiectasis, hypergonadotropic hypergonadism and brachydactyly (see this term) have also been reported.

RIN2 SYNDROME Is also known as rin2 deficiency|tall forehead, sparse hair, skin hyperextensibility, and scoliosis|tall forehead-sparse hair-skin hyperextensibility-scoliosis syndrome|macrocephaly-alopecia-cutis laxa-scoliosis syndrome|macs syndrome|macrocephaly, alopecia, cutis laxa, a

• Intellectual disability
• Short stature
• Scoliosis
• Muscular hypotonia
• Cryptorchidism

SOURCES: OMIM ORPHANET MESH MENDELIAN

3q29 microdeletion syndrome is a recurrent subtelomeric deletion syndrome with variable clinical manifestations including intellectual deficit and dysmorphic features.

3Q29 MICRODELETION SYNDROME Is also known as del(3)(q29)|microdeletion 3q29 syndrome|3q subtelomere deletion syndrome|monosomy 3q29|monosomy 3qter|3qter deletion

• Intellectual disability
• Global developmental delay
• Microcephaly
• Ataxia
• Failure to thrive

SOURCES: OMIM MESH ORPHANET MENDELIAN

MGAT2-CDG is a form of congenital disorders of N-linked glycosylation characterized by facial dysmorphism (large, posteriorly rotated ears with prominent antihelices, convex nasal ridge, open mouth, large and crowded teeth), stereotypic hand movements, seizures, and varying degrees of developmental delay. A bleeding tendency is also observed and this results from diminished platelet aggregation. The disease is caused by loss-of-function mutations in the gene MGAT2 (14q21).

MGAT2-CDG Is also known as cdg2a|cdgiia|cdg syndrome type iia|congenital disorder of glycosylation type iia|carbohydrate deficient glycoprotein syndrome type iia|n-acetylglucosaminyltransferase 2 deficiency|cdg-iia|alkuraya syndrome|carbohydrate-deficient glycoprotein syndrome, typ

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

SOURCES: OMIM MESH ORPHANET MENDELIAN

Coffin-Lowry syndrome (CLS) is a rare genetic neurological disorder characterized by psychomotor and growth retardation, facial dysmorphism, digit abnormalities, and progressive skeletal changes.

COFFIN-LOWRY SYNDROME Is also known as cls

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

SOURCES: MESH OMIM ORPHANET MENDELIAN

Hurler syndrome is the most severe form of mucopolysaccharidosis type 1 (MPS1; see this term), a rare lysosomal storage disease, characterized by skeletal abnormalities, cognitive impairment, heart disease, respiratory problems, enlarged liver and spleen, characteristic facies and reduced life expectancy.

HURLER SYNDROME Is also known as mpsih|mps1h|mps1-h|mucopolysaccharidosis type 1h|mucopolysaccharidosis type ih|hurler disease

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

SOURCES: OMIM ORPHANET MENDELIAN

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