MedGen

Noonan syndrome (NS) is characterized by characteristic facies, short stature, congenital heart defect, and developmental delay of variable degree. Other findings can include broad or webbed neck, unusual chest shape with superior pectus carinatum and inferior pectus excavatum, cryptorchidism, varied coagulation defects, lymphatic dysplasias, and ocular abnormalities. Although birth length is usually normal, final adult height approaches the lower limit of normal. Congenital heart disease occurs in 50%-80% of individuals. Pulmonary valve stenosis, often with dysplasia, is the most common heart defect and is found in 20%-50% of individuals. Hypertrophic cardiomyopathy, found in 20%-30% of individuals, may be present at birth or develop in infancy or childhood. Other structural defects include atrial and ventricular septal defects, branch pulmonary artery stenosis, and tetralogy of Fallot. Up to one fourth of affected individuals have mild intellectual disability, and language impairments in general are more common in NS than in the general population. [from GeneReviews]

Factor XIII deficiency is an autosomal recessive hematologic disorder characterized by increased bleeding and poor wound healing. Most cases of congenital factor XIII deficiency result from mutation in the A subunit (Kangsadalampai et al., 1999). Ichinose et al. (1996, 2000) proposed a classification of factor XIII deficiency: XIIIA deficiency (formerly 'type II' F13 deficiency) and XIIIB deficiency (formerly 'type I' F13 deficiency), as well as a possible combined deficiency of the 2. [from OMIM]

Factor XIII deficiency is an autosomal recessive hematologic disorder characterized by increased bleeding and poor wound healing. Most cases of congenital factor XIII deficiency result from mutation in the A subunit (Kangsadalampai et al., 1999). Ichinose et al. (1996, 2000) proposed a classification of factor XIII deficiency: XIIIA deficiency (formerly 'type II' F13 deficiency) and XIIIB deficiency (formerly 'type I' F13 deficiency), as well as a possible combined deficiency of the 2. [from OMIM]

Congenital disorder of glycosylation type IIw (CDG2W) is an autosomal dominant metabolic disorder characterized by liver dysfunction, coagulation deficiencies, and profound abnormalities in N-glycosylation of serum specific proteins. All reported patients carry the same mutation (602671.0017) (summary by Ng et al., 2021). For an overview of congenital disorders of glycosylation, see CDG1A (212065) and CDG2A (212066). [from OMIM]

Decreased activity of coagulation factor XIII (also known as fibrin stabilizing factor). Activated Factor XIII cross-links fibrin polymers solidifying the clot. [from HPO]