Abnormal facial shape, and Atrial fibrillation

Left ventricular noncompaction (LVNC) is a rare cardiomyopathy characterized anatomically by prominent left ventricular trabeculae and deep intratrabecular recesses causing progressive systolic and diastolic dysfunction, conduction abnormalities, and occasionally thromboembolic events.

LEFT VENTRICULAR NONCOMPACTION Is also known as spongy myocardium|lvnc|left ventricular hypertrabeculation|left ventricular noncompaction 1 with or without congenital heart defects

• Abnormal facial shape
• Ventricular septal defect
• Respiratory distress
• Congestive heart failure
• Patent ductus arteriosus

SOURCES: OMIM ORPHANET MENDELIAN

Mitral valve prolapse (MVP) has a prevalence of approximately 2 to 3% in the general population. It is characterized by fibromyxomatous changes in mitral leaflet tissue, with upward displacement of 1 or both leaflets into the left atrium during systole; MVP is diagnosed when the movement of the mitral leaflets exceeds 2 mm. In classic MVP, leaflets are at least 5 mm thick, whereas in nonclassic MVP, they are less than 5 mm thick. Auscultatory findings, when present, consist of a midsystolic click and/or a late systolic murmur. The natural history of MVP varies from benign, with a normal life expectancy, to severe complications associated with the development of significant mitral regurgitation, including congestive heart failure, bacterial endocarditis, atrial fibrillation, thromboembolism, and even sudden death. However, complications are uncommon, affecting less than 3% of individuals with MVP (Freed et al., 1999; Grau et al., 2007; Delling and Vasan, 2014).Grau et al. (2007) provided a detailed review of the genetics of mitral valve prolapse. Delling and Vasan (2014) reviewed the epidemiology and pathophysiology of MVP, with discussion of disease progression, genetics, and molecular basis. Genetic Heterogeneity of Familial Mitral Valve ProlapseSeveral loci for mitral valve prolapse (MVP) have been been mapped: MVP1 to chromosome 16p; MVP2 (OMIM ) to chromosome 11p; and MVP3 (OMIM ) to chromosome 13q.

FAMILIAL MITRAL VALVE PROLAPSE Is also known as myxomatous mitral valve prolapse 1|barlow syndrome|pmv|mmvp1|floppy mitral valve|myxomatous valvular disease, familial|mitral regurgitation, familial|mvp prolapsed mitral valve|mitral valve prolapse, myxomatous 1|click-murmur syndrome|mitral valve prolaps

• Intellectual disability
• Short stature
• Growth delay
• Micrognathia
• Pain

SOURCES: OMIM ORPHANET MENDELIAN

Emery-Dreifuss muscular dystrophy is characterized classically by the triad of weakness of the shoulder and pelvic girdle muscles, contractures of the elbows, neck, and Achilles tendon, and cardiac involvement, most commonly arrhythmias (summary by Jimenez-Escrig et al., 2012).For a discussion of genetic heterogeneity of EDMD, see {310300}.

AUTOSOMAL RECESSIVE EMERY-DREIFUSS MUSCULAR DYSTROPHY Is also known as edmd3

• Intellectual disability
• Scoliosis
• Micrognathia
• Muscle weakness
• Abnormal facial shape

SOURCES: ORPHANET MESH OMIM MENDELIAN

Congenital fiber-type disproportion (CFTD) myopathy is a genetically heterogeneous disorder in which there is relative hypotrophy of type 1 muscle fibers compared to type 2 fibers on skeletal muscle biopsy. However, these findings are not specific and can be found in many different myopathic and neuropathic conditions. Clarke and North (2003) stated that the diagnosis of 'congenital fiber-type disproportion' as a disease entity is one of exclusion. They also suggested that the nonspecific histologic findings should be termed 'fiber size disproportion,' thus reserving the term CFTD for those cases in which no secondary cause can be found.

MYOPATHY, CONGENITAL, WITH FIBER-TYPE DISPROPORTION; CFTD Is also known as cftdm|fiber-type disproportion myopathy, congenital

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

SOURCES: OMIM MENDELIAN

Branchiootorenal (BOR) syndrome is characterized by branchial arch anomalies (branchial clefts, fistulae, cysts), hearing impairment (malformations of the auricle with pre-auricular pits, conductive or sensorineural hearing impairment), and renal malformations (urinary tree malformation, renal hypoplasia or agenesis, renal dysplasia, renal cysts).

BOR SYNDROME Is also known as melnick-fraser syndrome|branchiootorenal syndrome|branchiootorenal dysplasia

• Hearing impairment
• Sensorineural hearing impairment
• Cleft palate
• High palate
• Myopia

SOURCES: ORPHANET OMIM MENDELIAN

Friedreich ataxia (FRDA) is an inherited neurodegenerative disorder classically characterized by progressive gait and limb ataxia, dysarthria, dysphagia, oculomotor dysfunction, loss of deep tendon reflexes, pyramidal tract signs, scoliosis, and in some, cardiomyopathy, diabetes mellitus, visual loss and defective hearing.

FRIEDREICH ATAXIA Is also known as frda1|fa|frda

• Hearing impairment
• Scoliosis
• Ataxia
• Nystagmus
• Muscle weakness

SOURCES: ORPHANET OMIM MENDELIAN

Fabry disease (FD) is a progressive, inherited, multisystemic lysosomal storage disease characterized by specific neurological, cutaneous, renal, cardiovascular, cochleo-vestibular and cerebrovascular manifestations.

FABRY DISEASE Is also known as ceramide trihexosidase deficiency|hereditary dystopic lipidosis|fd|alpha-galactosidase a deficiency|diffuse angiokeratoma|gla deficiency|angiokeratoma corporis diffusum|anderson-fabry disease

• Seizures
• Short stature
• Hearing impairment
• Sensorineural hearing impairment
• Pain

SOURCES: ORPHANET OMIM MESH MENDELIAN

Costello syndrome (CS) is a rare multisystemic disorder characterized by failure to thrive, short stature, developmental delay or intellectual disability, joint laxity, soft skin, and distinctive facial features. Cardiac and neurological involvement is common and there is an increased lifetime risk of certain tumors.

COSTELLO SYNDROME Is also known as fcs syndrome|faciocutaneoskeletal syndrome

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

SOURCES: MESH OMIM ORPHANET MENDELIAN

Atrial fibrillation (AF) is a supraventricular tachyarrhythmia characterized by uncoordinated atrial activation with consequent deterioration of atrial mechanical function. It is the most common sustained cardiac rhythm disturbance, and its prevalence increases as the population ages. An estimated 70,000 strokes each year are caused by atrial fibrillation (summary by Oberti et al., 2004).For a discussion of genetic heterogeneity of atrial fibrillation, see {608583}.

• Cardiomyopathy
• Abnormal heart morphology
• Tachycardia
• Atrial fibrillation
• Supraventricular tachycardia

SOURCES: OMIM MENDELIAN

Noonan syndrome (NS) is an autosomal dominant disorder characterized by short stature, facial dysmorphism, and a wide spectrum of congenital heart defects. The distinctive facial features consist of a broad forehead, hypertelorism, downslanting palpebral fissures, a high-arched palate, and low-set, posteriorly rotated ears. Cardiac involvement is present in up to 90% of patients. Pulmonic stenosis and hypertrophic cardiomyopathy are the most common forms of cardiac disease, but a variety of other lesions are also observed. Additional relatively frequent features include multiple skeletal defects (chest and spine deformities), webbed neck, mental retardation, cryptorchidism, and bleeding diathesis (summary by Tartaglia et al., 2002). Genetic Heterogeneity of Noonan SyndromeSee also NS3 (OMIM ), caused by mutation in the KRAS gene (OMIM ); NS4 (OMIM ), caused by mutation in the SOS1 gene (OMIM ); NS5 (OMIM ), caused by mutation in the RAF1 gene (OMIM ); NS6 (OMIM ), caused by mutation in the NRAS gene (OMIM ); NS7 (OMIM ), caused by mutation in the BRAF gene (OMIM ); NS8 (OMIM ), caused by mutation in the RIT1 gene (OMIM ); NS9 (OMIM ), caused by mutation in the SOS2 gene (OMIM ); and NS10 (OMIM ), caused by mutation in the LZTR1 gene (OMIM ).See also NS2 (OMIM ) for a possible autosomal recessive form of NS; Noonan syndrome-like disorder with loose anagen hair-1 (NSLH1 ), caused by mutation in the SHOC2 gene (OMIM ); Noonan syndrome-like disorder with loose anagen hair-2 (NSLH2 ), caused by mutation in the PPP1CB gene (OMIM ); and Noonan syndrome-like disorder with or without juvenile myelomonocytic leukemia (NSLL ), caused by mutation in the CBL gene (OMIM ).Mutations in the neurofibromin gene (NF1 ), which is the site of mutations causing classic neurofibromatosis type I (NF1 ), have been found in neurofibromatosis-Noonan syndrome (NFNS ).

NOONAN SYNDROME 1; NS1 Is also known as female pseudo-turner syndrome|male turner syndrome|noonan syndrome|turner phenotype with normal karyotype

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

SOURCES: OMIM MENDELIAN