Li-Fraumeni syndrome 2

A Li-Fraumeni syndrome that has_material_basis_in heterozygous mutation in the CHEK2 gene on chromosome 22q12.1.

Li-Fraumeni syndrome 1

A Li-Fraumeni syndrome that has_material_basis_in heterozygous mutation in the TP53 gene on chromosome 17p13.1.

Bryant-Li-Bhoj neurodevelopmental syndrome 1

A Bryant-Li-Bhoj neurodevelopmental syndrome that is characterized predominantly by moderate to severe global developmental delay with impaired intellectual development, poor or absent speech, and delayed motor milestones and that has_material_basis_in heterozygous mutation in the H3F3A gene on chromosome 1q42.

Bryant-Li-Bhoj neurodevelopmental syndrome 2

A Bryant-Li-Bhoj neurodevelopmental syndrome that is characterized predominantly by moderate to severe global developmental delay with impaired intellectual development, poor or absent speech, and delayed motor milestones nd that has_material_basis_in heterozygous mutation in the H3F3B gene on chromosome 17q25.

second-degree atrioventricular block

An atrioventricular block that is characterized by progressive prolongation of the PR interval on consecutive beats followed by a blocked P wave on electrocardiogram or intermittently non-conducted P waves not preceded by PR changes on electrocardiogram caused by a conduction block between the atria and the ventricles through the atrioventricular node.

glycine encephalopathy 1

A glycine encephalopathy that has_material_basis_in homozygous or compound heterozygous mutation in the GLDC gene, a member of the mitochondrial glycine cleavage system that encodes the P protein, on chromosome 9p24.

third-degree atrioventricular block

An atrioventricular block that is characterized by bradycardia, hypotension, hemodynamic instability and complete dissociation between P waves and QRS complexes on electrocardiogram caused when conduction fails to propagate from atria to ventricles.

chromosome 16p12.1 deletion syndrome

A chromosomal deletion syndrome that has_material_basis_in a 520 kb deletion on the short (p) arm of the chromosome at a location designated 16p12.1 and is characterized by developmental delay, craniofacial dysmorphology, and congenital heart defects.

Cri-Du-Chat syndrome

A syndrome that has_material_basis_in deletion of the end of the chromosome 5 p arm and that is characterized by intellectual disability, delayed development, small head size, low birth weight, weak muscle tone widely set eyes, low-set ears, a small jaw, a rounded face and a high-pitched cry that sounds like that of a cat.

congenital disorder of glycosylation Ig

A congenital disorder of glycosylation I that is characterized by facial dysmorphism (prominent forehead, large ears, thin upper lip), generalized hypotonia, feeding difficulties, moderate to severe developmental delay, progressive microcephaly, frequent upper respiratory tract infections due to impaired immunity with decreased immunoglobulin levels, and decreased coagulation factors and has_material_basis_in homozygous or compound heterozygous mutation in the gene encoding dolichyl-P-mannose:Man-7-GlcNAc-2-PP-dolichyl-alpha-6-mannosyltransferase on chromosome 22q13.