Global developmental delay, and Micropenis

• Intellectual disability
• Seizures
• Global developmental delay
• Cryptorchidism
• Ventriculomegaly

SOURCES: OMIM MENDELIAN

CONGENITAL DISORDER OF GLYCOSYLATION, TYPE IW; CDG1W Is also known as cdgiw|cdg iw

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

SOURCES: OMIM MENDELIAN

STT3B-CDG is a form of congenital disorders of N-linked glycosylation characterized by intrauterine growth retardation, microcephaly, failure to thrive, developmental delay, intellectual disability, hypotonia, seizures, optic nerve atrophy and respiratory difficulties. Genital abnormalities (micropenis, hypoplastic scrotum, undescended testes) have also been reported. STT3B-CDG is caused by mutations in the gene STT3B (3p24.1).

STT3B-CDG Is also known as cdg syndrome type ix|congenital disorder of glycosylation type ix|cdg1x|carbohydrate deficient glycoprotein syndrome type ix|cdg-ix|congenital disorder of glycosylation type 1x

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

SOURCES: ORPHANET MENDELIAN

Postaxial polydactyly-anterior pituitary anomalies-facial dysmorphism syndrome is a rare, genetic developmental defect during embryogenesis disorder characterized primarily by congenital hypopituitarism and/or postaxial polydactyly. It can be associated with short stature, delayed bone age, hypogonadotropic hypogonadism, and/or midline facial defects (e.g. hypotelorism, mild midface hypoplasia, flat nasal bridge, and cleft lip and/or palate). Hypoplastic anterior pituitary and ectopic posterior pituitary lobe are frequent findings on MRI examination.

POSTAXIAL POLYDACTYLY-ANTERIOR PITUITARY ANOMALIES-FACIAL DYSMORPHISM SYNDROME Is also known as pallister-hall syndrome 2, formerly|culler-jones syndrome|phs2, formerly

• Seizures
• Global developmental delay
• Short stature
• Growth delay
• Cleft palate

SOURCES: OMIM ORPHANET MENDELIAN

BBS8 is an autosomal recessive disorder characterized by retinitis pigmentosa, obesity, postaxial polydactyly, hypogonadism, and developmental delay (Ansley et al., 2003).For a general phenotypic description and a discussion of genetic heterogeneity of Bardet-Biedl syndrome, see BBS1 (OMIM ).

• Intellectual disability
• Global developmental delay
• Hearing impairment
• Cognitive impairment
• Obesity

SOURCES: OMIM MENDELIAN

STT3A-CDG is a form of congenital disorders of N-linked glycosylation characterized by developmental delay, intellectual disability, failure to thrive, hypotonia and seizures. STT3A-CDG is caused by mutations in the gene STT3A (11q23.3).

STT3A-CDG Is also known as congenital disorder of glycosylation type 1w|congenital disorder of glycosylation type iw|cdgix|cdg ix|cdg1w|cdg-iw|cdg syndrome type iw

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

SOURCES: OMIM ORPHANET MENDELIAN

Pituitary stalk interruption syndrome (PSIS) is a congenital abnormality of the pituitary that is responsible for pituitary deficiency and is usually characterized by the triad of a very thin or interrupted pituitary stalk, an ectopic (or absent) posterior pituitary (EPP) and hypoplasia or aplasia of the anterior pituitary visible on MRI. In some patients the abnormality may be limited to EPP (also called ectopic neurohypophysis) or to an interrupted pituitary stalk.

PITUITARY STALK INTERRUPTION SYNDROME Is also known as psis|ectopic neurohypophysis

• Intellectual disability
• Seizures
• Global developmental delay
• Short stature
• Failure to thrive

SOURCES: ORPHANET MENDELIAN

Lissencephaly ('smooth brain') results from migrational arrest of cortical neurons short of their normal destination, and can result in profound mental retardation and seizures. In X-linked lissencephaly-1, affected males generally have more a severe phenotype compared to females. DCX mutations cause classic lissencephaly with mental retardation in hemizygous males and a milder phenotype known as subcortical band heterotopia in females, sometimes in the same family. The subcortical lamina heterotopia found in heterozygous females is also referred to as 'double cortex' (DC) syndrome (des Portes et al., 1997).There are several X-linked loci that affect neuronal migration, including the Aicardi locus (OMIM ).

LISSENCEPHALY, X-LINKED, 1; LISX1 Is also known as xlis|lissencephaly and agenesis of corpus callosum

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

SOURCES: OMIM MENDELIAN

16P13.2 MICRODELETION SYNDROME Is also known as del(16)(p13.2)|monosomy 16p13.2

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

SOURCES: ORPHANET OMIM MENDELIAN

BBS17 is an autosomal recessive ciliopathy characterized by retinitis pigmentosa, cognitive impairment, obesity, renal dysfunction, and hypogenitalism. Polydactyly, most often postaxial, is also a primary feature of BBS; in BBS17 mesoaxial polydactyly, with fused or Y-shaped metacarpals, is a distinct manifestation (Deffert et al., 2007; Schaefer et al., 2014).For a general phenotypic description and a discussion of genetic heterogeneity of Bardet-Biedl syndrome, see BBS1 (OMIM ).

• Global developmental delay
• Cognitive impairment
• Brachydactyly
• Renal insufficiency
• Obesity

SOURCES: OMIM MENDELIAN