Intellectual disability, and Acute lymphoblastic leukemia

Severe congenital neutropenia-3 is an autosomal recessive bone marrow failure disorder characterized by low numbers of neutrophils, increased susceptibility to bacterial and fungal infections, and increased risk of developing myelodysplastic syndrome or acute myeloid leukemia. In addition, patients with HAX1 mutations affecting both isoform A and B of the gene develop neurologic abnormalities (summary by Boztug et al., 2010).The Swedish physician Rolf Kostmann (1956) described an autosomal recessive hematologic disorder, termed infantile agranulocytosis, with severe neutropenia with an absolute neutrophil count below 0.5 x 10(9)/l and early onset of severe bacterial infections. The disorder was later termed Kostmann syndrome (Skokowa et al., 2007). Lekstrom-Himes and Gallin (2000) discussed severe congenital neutropenia in a review of immunodeficiencies caused by defects in phagocytes.In addition to Kostmann agranulocytosis, recessively inherited neutropenic syndromes include congenital neutropenia with eosinophilia (OMIM ), Chediak-Higashi syndrome (OMIM ), and Fanconi pancytopenic syndrome (see {227650}).For a phenotypic description and a discussion of genetic heterogeneity of severe congenital neutropenia, see SCN1 (OMIM ).

NEUTROPENIA, SEVERE CONGENITAL, 3, AUTOSOMAL RECESSIVE; SCN3 Is also known as agranulocytosis, infantile|kostmann disease

• Intellectual disability
• Seizures
• Global developmental delay
• Hearing impairment
• Ataxia

SOURCES: ORPHANET OMIM MENDELIAN

A rare autosomal recessive inherited syndrome. It is characterized by xeroderma pigmentosum, mental retardation, dwarfism, hypogonadism, and neurologic abnormalities.

• Intellectual disability
• Hearing impairment
• Microcephaly
• Ataxia
• Sensorineural hearing impairment

SOURCES: ORPHANET MESH OMIM MENDELIAN

WAGR syndrome (Wilms tumor - aniridia - genitourinary anomalies - intellectual disability mental retardation) is a rare genetic disorder characterized by an unusual complex of congenital developmental abnormalities with intellectual disability, and an increased risk of developing Wilms tumor.

WAGR SYNDROME Is also known as del(11)(p13)|chromosome 11p13 deletion syndrome|wilms tumor-aniridia-genitourinary anomalies-intellectual disability syndrome|monosomy 11p13|deletion 11p13|wagr syndrome

• Intellectual disability
• Short stature
• Microcephaly
• Scoliosis
• Nystagmus

SOURCES: OMIM ORPHANET MENDELIAN

Noonan syndrome-8 is an autosomal dominant disorder characterized by short stature, distinctive facial features, and a high incidence of congenital heart defects and hypertrophic cardiomyopathy. A subset of patients show intellectual disabilities (summary by Aoki et al., 2013).For a phenotypic description and a discussion of genetic heterogeneity of Noonan syndrome, see NS1 (OMIM ).

• Intellectual disability
• Short stature
• Scoliosis
• Hypertelorism
• Failure to thrive

SOURCES: OMIM MENDELIAN

Autosomal dominant anomaly characterized by abnormal ovoid shape GRANULOCYTE nuclei and their clumping chromatin. Mutations in the LAMIN B receptor gene that results in reduced protein levels are associated with the disorder. Heterozygote individuals are healthy with normal granulocyte function while homozygote individuals occasionally have skeletal anomalies, developmental delay, and seizures.

• Intellectual disability
• Global developmental delay
• Hypertelorism
• Failure to thrive
• Strabismus

SOURCES: OMIM MESH MENDELIAN

Mosaic variegated aneuploidy is an autosomal recessive disorder characterized by mosaic aneuploidies, predominantly trisomies and monosomies, involving multiple different chromosomes and tissues. The proportion of aneuploid cells varies but is usually more than 25% and is substantially greater than in normal individuals. Affected individuals typically present with severe intrauterine growth retardation and microcephaly. Eye anomalies, mild dysmorphism, variable developmental delay, and a broad spectrum of additional congenital abnormalities and medical conditions may also occur. The risk of malignancy is high, with rhabdomyosarcoma, Wilms tumor, and leukemia reported in several cases (summary by Hanks et al., 2004). Genetic Heterogeneity of Mosaic Variegated Aneuploidy SyndromeSee also MVA2 (OMIM ), caused by mutation in the CEP57 gene (OMIM ) on chromosome 11q21, and MVA3 (OMIM ), caused by mutation in the TRIP13 gene (OMIM ) on chromosome 5p15.

MOSAIC VARIEGATED ANEUPLOIDY SYNDROME 1; MVA1 Is also known as mva syndrome

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

SOURCES: OMIM MENDELIAN

Nijmegen breakage syndrome is a rare genetic disease presenting at birth with microcephaly, dysmorphic facial features, becoming more noticeable with age, growth delay, and later-onset complications such as malignancies and infections.

NIJMEGEN BREAKAGE SYNDROME Is also known as microcephaly-immunodeficiency-lymphoreticuloma syndrome|ataxia-telangiectasia variant v1|microcephaly with normal intelligence, immunodeficiency, and lymphoreticular malignancies|at-v1|berlin breakage syndrome|ataxia-telangiectasia, variant 1|seemanova sy

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

SOURCES: ORPHANET OMIM MESH MENDELIAN

Ataxia-telangiectasia is the association of severe combined immunodeficiency (affecting mainly the humoral immune response) with progressive cerebellar ataxia. It is characterised by neurological signs, telangiectasias, increased susceptibility to infections and a higher risk of cancer.

ATAXIA-TELANGIECTASIA Is also known as at1|louis-bar syndrome

• Intellectual disability
• Seizures
• Short stature
• Microcephaly
• Scoliosis

SOURCES: ORPHANET OMIM MENDELIAN

Weaver syndrome comprises pre- and postnatal overgrowth, accelerated osseous maturation, characteristic craniofacial appearance, and developmental delay. Most cases are sporadic, although autosomal dominant inheritance has been reported. Although there is phenotypic overlap between Weaver syndrome and Sotos syndrome (OMIM ), distinguishing features of Weaver syndrome include broad forehead and face, ocular hypertelorism, prominent wide philtrum, micrognathia, deep horizontal chin groove, and deep-set nails. In addition, carpal bone development is advanced over the rest of the hand in Weaver syndrome, whereas in Sotos syndrome carpal bone development is at or behind that of the rest of the hand (summary by Basel-Vanagaite, 2010).The 'Weaver-like' syndrome reported by Stoll et al. (1985) in a mother and son may be a separate entity.Sotos syndrome (OMIM ), which shows considerable phenotypic overlap with Weaver syndrome, is caused by mutation in the NSD1 gene (OMIM ) on chromosome 5q35.

WEAVER SYNDROME; WVS Is also known as weaver-smith syndrome|wss

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

SOURCES: OMIM MENDELIAN

Mosaic variegated aneuploidy (MVA) syndrome is a chromosomal anomaly characterized by multiple mosaic aneuploidies that leads to a variety of phenotypic abnormalities and cancer predisposition.

MOSAIC VARIEGATED ANEUPLOIDY SYNDROME Is also known as warburton-anyane-yeboa syndrome

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

SOURCES: ORPHANET OMIM MENDELIAN