Muscular hypotonia, and Overgrowth

Rahman syndrome is characterized by mild to severe intellectual disability associated with variable somatic overgrowth manifest as increased birth length, height, weight, and/or head circumference. The overgrowth is apparent in infancy and may lessen with time or persist. The phenotype is highly variable; some individuals may have other minor anomalies, including dysmorphic facial features, strabismus, or camptodactyly. The disorder is thought to result from a defect in epigenetic regulation (summary by Tatton-Brown et al., 2017).

• Intellectual disability
• Global developmental delay
• Strabismus
• Abnormal facial shape
• Macrocephaly

SOURCES: OMIM MENDELIAN

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

SOURCES: OMIM MENDELIAN

SOTOS SYNDROME 2; SOTOS2 Is also known as malan syndrome

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

SOURCES: OMIM MENDELIAN

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

SOURCES: ORPHANET OMIM MENDELIAN

Tatton-Brown-Rahman syndrome is characterized by tall stature, a distinctive facial appearance, and intellectual disability (Tatton-Brown et al., 2014).

TALL STATURE-INTELLECTUAL DISABILITY-FACIAL DYSMORPHISM SYNDROME Is also known as dnmt3a-related overgrowth syndrome|tatton-brown-rahman overgrowth syndrome

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

SOURCES: ORPHANET OMIM MENDELIAN

Macrocephaly, dysmorphic facies, and psychomotor retardation (MDFPMR) is an autosomal recessive neurodevelopmental disorder characterized by large head and somatic overgrowth apparent at birth followed by global developmental delay. Affected individuals have characteristic dysmorphic facial features and persistently large head, but increased birth weight normalizes with age. Additional neurologic features, including seizures, hypotonia, and gait ataxia, may also occur. Patients show severe intellectual impairment (summary by Ortega-Recalde et al., 2015).

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

SOURCES: OMIM MENDELIAN

17p13.3 microduplication syndrome is characterized by variable psychomotor delay and dysmorphic features.

17P13.3 MICRODUPLICATION SYNDROME Is also known as 17p13.3 duplication syndrome|dup(17)(p13.3)|trisomy 17p13.3

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

SOURCES: MESH OMIM ORPHANET MENDELIAN

Hemihyperplasia-multiple lipomatosis syndrome is a rare, genetic overgrowth syndrome characterized by non- progressive, asymmetrical, moderate hemihyperplasia (frequently affecting the limbs) associated with slow growing, painless, multiple, recurrent, subcutaneous lipomatous masses distributed throughout entire body (in particular back, torso, extremities, fingers, axillae). Superficial vascular malformations may also be associated. Increased risk of intra-abdominal embryonal malignancies may be associated.

HEMIHYPERPLASIA-MULTIPLE LIPOMATOSIS SYNDROME Is also known as hhml

• Intellectual disability
• Seizures
• Generalized hypotonia
• Scoliosis
• Neoplasm

SOURCES: ORPHANET MENDELIAN

Luscan-Lumish syndrome is characterized by macrocephaly, intellectual disability, speech delay, low sociability, and behavioral problems. More variable features include postnatal overgrowth, obesity, advanced carpal ossification, developmental delay, and seizures (Luscan et al., 2014; Lumish et al., 2015)

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

SOURCES: OMIM MENDELIAN

Autosomal recessive cutis laxa type IB (ARCL1B) is characterized by the presence of severe systemic connective tissue abnormalities, including emphysema, cardiopulmonary insufficiency, birth fractures, arachnodactyly, and fragility of blood vessels. All symptoms refer to disturbed elastic fiber formation (summary by Hoyer et al., 2009).For a complete phenotypic description and a discussion of genetic heterogeneity of autosomal recessive cutis laxa, see ARCL1A (OMIM ).

• Generalized hypotonia
• Microcephaly
• Hypertelorism
• Micrognathia
• Abnormal facial shape

SOURCES: OMIM MENDELIAN