Anemia, and Polymicrogyria

Low match SRD5A3-CDG

SRD5A3-CDG is a rare, non X-linked congenital disorder of glycosylation due to steroid 5 alpha reductase type 3 deficiency characterized by a highly variable phenotype typically presenting with severe visual impairment, variable ocular anomalies (such as optic nerve hypoplasia/atrophy, iris and optic nerve coloboma, congenital cataract, glaucoma), intellectual disability, cerebellar abnormalities, nystagmus, hypotonia, ataxia, and/or ichthyosiform skin lesions. Other reported manifestations include retinitis pigmentosa, kyphosis, congenital heart defects, hypertrichosis and abnormal coagulation.

SRD5A3-CDG Is also known as cdg1q|coloboma, ocular, with ichthyosis, brain malformations, and endocrine abnormalities|congenital disorder of glycosylation type iq|cdg-iq|congenital disorder of glycosylation type 1q|cdg syndrome type iq|cdg iq|cdgiq

• Intellectual disability
• Seizures
• Global developmental delay
• Generalized hypotonia
• Hearing impairment

SOURCES: OMIM ORPHANET MENDELIAN

Low match FAMILIAL PORENCEPHALY

Porencephaly is a term used for any cavitation or cerebrospinal fluid-filled cyst in the brain. One form, called encephaloclastic, or type 1, porencephaly, is usually unilateral and results from focal destructive lesions such as fetal vascular occlusion or birth trauma. Another form, called schizencephalic, or type 2, porencephaly, is usually symmetric and represents a primary defect or arrest in the development of the cerebral ventricles. Encephaloclastic porencephaly is more common (Airaksinen, 1984; Sensi et al., 1990). Genetic Heterogeneity of PorencephalySee also POREN2 (OMIM ), caused by mutation in the COL4A2 gene (OMIM ).

FAMILIAL PORENCEPHALY Is also known as t1p|porencephaly, type 1, autosomal dominant|adt1p|hemiplegia, infantile, with porencephaly porencephaly, type 1

• Intellectual disability
• Seizures
• Global developmental delay
• Strabismus
• Cataract

SOURCES: OMIM ORPHANET MENDELIAN

Low match CONGENITAL INTRAUTERINE INFECTION-LIKE SYNDROME

Congenital intrauterine infection-like syndrome is characterised by the presence of microcephaly and intracranial calcifications at birth accompanied by neurological delay, seizures and a clinical course similar to that seen in patients after intrauterine infection with Toxoplasma gondii, Rubella, Cytomegalovirus, Herpes simplex (so-called TORCH syndrome), or other agents, despite repeated tests revealing the absence of any known infectious agent.

CONGENITAL INTRAUTERINE INFECTION-LIKE SYNDROME Is also known as baraitser-reardon syndrome|bilateral band-like calcification with polymicrogyria|blc-pmg|blcpmg|band-like calcification with simplified gyration and polymicrogyria|microcephaly-intracranial calcification-intellectual disability syndrome|pseudo-torch syndr

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

SOURCES: ORPHANET OMIM MENDELIAN

Low match AARSKOG-SCOTT SYNDROME; AAS

Aarskog-Scott syndrome, also known as faciogenital dysplasia, is an X-linked disorder characterized by short stature, hypertelorism, shawl scrotum, and brachydactyly, although there is wide phenotypic variability and other features, such as joint hyperextensibility, short nose, widow's peak, and inguinal hernia, may also occur. Most patients do not have mental retardation, but some may have neurobehavioral features. Carrier females may present with subtle features, such as widow's peak or short stature (summary by Orrico et al., 2010).

AARSKOG-SCOTT SYNDROME; AAS Is also known as aarskog syndrome, x-linked|faciodigitogenital syndrome|fgdy|faciogenital dysplasia

• Intellectual disability
• Seizures
• Global developmental delay
• Short stature
• Scoliosis

SOURCES: OMIM MENDELIAN

Low match BALLER-GEROLD SYNDROME

Baller-Gerold syndrome is characterized by the association of coronal craniosynostosis with radial ray anomalies (oligodactyly, aplasia or hypoplasia of the thumb, aplasia or hypoplasia of the radius).

BALLER-GEROLD SYNDROME Is also known as craniosynostosis-radial aplasia syndrome|craniosynostosis with radial defects

• Intellectual disability
• Seizures
• Short stature
• Hearing impairment
• Scoliosis

SOURCES: OMIM ORPHANET MESH MENDELIAN

Low match BLOOD GROUP, SS; SS

Ss blood group antigens reside on the red-cell glycoprotein GYPB. The S and s antigens result from a polymorphism at amino acid 29 of GYPB, where S has met29 and s has thr29. The U antigen refers to a short extracellular sequence in GYPB located near the membrane. GYPB, glycophorin A (GYPA ), and glycophorin E (GYPE ) are closely linked on chromosome 4q31. Antigens of the MN blood group (OMIM ) reside on GYPA. The M and N antigens differ at amino acids 1 and 5 of GYPA, where M is ser-ser-thr-thr-gly, and N is leu-ser-thr-thr-glu. The N terminus of GYPB is essentially identical to that of GYPA except that it always expresses the N antigen, denoted 'N' or N-prime. Recombination and gene conversion between GYPA, GYPB, and GYPE lead to hybrid glycophorin molecules and generation of low-incidence antigens. Thus, the MN and Ss blood groups are together referred to as the MNSs blood group system (see {111300}). Recombination results in 3 glycophorin-null phenotypes: En(a-) cells lack GYPA due to recombination between GYPA and GYPB; GYPB-negative (S-s-U-) cells lack GYPB due to recombination in GYPB; and M(k) cells (M-N-S-s-U-) lack both GYPA and GYPB due to recombination between GYPA and GYPE. Individuals with glycophorin-null phenotypes have decreased sialic acid content and increased resistance to malarial infection (see {611162}). GYPA and GYPB are not essential for red-cell development or survival, and GYPA- and GYPB-null phenotypes are not associated with anemia or altered red-cell function (review by Cooling, 2015).

BLOOD GROUP, SS; SS Is also known as ss blood group

• Neoplasm
• Anemia

SOURCES: OMIM MENDELIAN

Low match DIGEORGE SYNDROME; DGS

DiGeorge syndrome (DGS) comprises hypocalcemia arising from parathyroid hypoplasia, thymic hypoplasia, and outflow tract defects of the heart. Disturbance of cervical neural crest migration into the derivatives of the pharyngeal arches and pouches can account for the phenotype. Most cases result from a deletion of chromosome 22q11.2 (the DiGeorge syndrome chromosome region, or DGCR). Several genes are lost including the putative transcription factor TUPLE1 which is expressed in the appropriate distribution. This deletion may present with a variety of phenotypes: Shprintzen, or velocardiofacial, syndrome (VCFS ); conotruncal anomaly face (or Takao syndrome); and isolated outflow tract defects of the heart including tetralogy of Fallot, truncus arteriosus, and interrupted aortic arch. A collective acronym CATCH22 has been proposed for these differing presentations. A small number of cases of DGS have defects in other chromosomes, notably 10p13 (see {601362}). In the mouse, a transgenic Hox A3 (Hox 1.5) knockout produces a phenotype similar to DGS as do the teratogens retinoic acid and alcohol.

DIGEORGE SYNDROME; DGS Is also known as hypoplasia of thymus and parathyroids|chromosome 22q11.2 deletion syndrome|third and fourth pharyngeal pouch syndrome

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

SOURCES: OMIM MENDELIAN

Low match KABUKI SYNDROME 1; KABUK1

Kabuki syndrome is a congenital mental retardation syndrome with additional features, including postnatal dwarfism, a peculiar facies characterized by long palpebral fissures with eversion of the lateral third of the lower eyelids (reminiscent of the make-up of actors of Kabuki, a Japanese traditional theatrical form), a broad and depressed nasal tip, large prominent earlobes, a cleft or high-arched palate, scoliosis, short fifth finger, persistence of fingerpads, radiographic abnormalities of the vertebrae, hands, and hip joints, and recurrent otitis media in infancy (Niikawa et al., 1981). Genetic HeterogeneityKabuki syndrome-2 (OMIM ) is caused by mutation in the KDM6A gene (OMIM ) on chromosome Xp11.3.

KABUKI SYNDROME 1; KABUK1 Is also known as kabuki syndrome|kabuki make-up syndrome|kms|niikawa-kuroki syndrome

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

SOURCES: OMIM MENDELIAN

Low match MICROCEPHALY 16, PRIMARY, AUTOSOMAL RECESSIVE; MCPH16

• Seizures
• Global developmental delay
• Short stature
• Microcephaly
• Micrognathia

SOURCES: OMIM MENDELIAN

Low match MELAS

MELAS (Mitochondrial myopathy, encephalopathy, lactic acidosis, and stroke) syndrome is a rare progressive multisystemic disorder characterized by encephalomyopathy, lactic acidosis, and stroke-like episodes. Other features include endocrinopathy, heart disease, diabetes, hearing loss, and neurological and psychiatric manifestations.

MELAS Is also known as mitochondrial encephalomyopathy, lactic acidosis and stroke-like episodes|melas syndrome|mitochondrial myopathy, encephalopathy, lactic acidosis and stroke-like episodes

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

SOURCES: ORPHANET OMIM MESH MENDELIAN