Amish, Mennonite, and Hutterite
Genetic Disorder Database

Jervell and Lange-Nielsen syndrome

Disorder
OMIM #: #220400  (Click to access OMIM database)
Disorder: Jervell and Lange-Nielsen syndrome 
Also known as: DEAFNESS, CONGENITAL, AND FUNCTIONAL HEART DISEASE, PROLONGED QT INTERVAL IN EKG AND SUDDEN DEATH, CARDIOAUDITORY SYNDROME OF JERVELL AND LANGE-NIELSEN, SURDO-CARDIAC SYNDROME 
Clinical
Phenotype: prolonged QT interval, seizures, syncope, sudden death, arrhythmia, torsade de pointes, congenital sensorineural hearing impairment 
Seen In: Amish
Old Order Mennonite
Old Colony Mennonite
Unknown/Other Mennonite
Hutterite
Remarks: Autosomal recessive 
Mutations
1   Amish  
Gene: KCNQ1
Base Change: c.451_452delCT
Amino Acid Change: p.Leu151GlyfsX133
Last updated: 2023-01-03 

References
Chen Q, Zhang D, Gingell RL, Moss AJ, Napolitano C, Priori SG, Schwartz PJ, Kehoe E, Robinson JL, Schulze-Bahr E, Wang Q, Towbin JA. (1999) Homozygous deletion in KVLQT1 associated with Jervell and Lange-Nielsen syndrome. Circulation 99(10): 1344-1347.
PubMed ID: 10077519 

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