Potassium voltage-gated channel subfamily KQT member 1
The KCNQ1 gene encodes a potassium channel involved in cardiac conduction. Mutations cause autosomal dominant arrhythmias such as long-QT syndrome 1 and short-QT syndrome 2, Jervell and Lange-Nielsen syndrome, and familial atrial fibrillation 3. Because of impriting clinical presentation varies depending the transmission from father or mother.
Genetests:
| Research |
Method |
Carrier testing |
| Turnaround |
5 days |
| Specimen type |
genomic DNA |
Related Diseases:
References:
| 1. |
Piippo K et al. (2001) A founder mutation of the potassium channel KCNQ1 in long QT syndrome: implications for estimation of disease prevalence and molecular diagnostics.
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| 2. |
Mancini-DiNardo D et al. (2003) A differentially methylated region within the gene Kcnq1 functions as an imprinted promoter and silencer.
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| 3. |
Chen YH et al. (2003) KCNQ1 gain-of-function mutation in familial atrial fibrillation.
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| 4. |
Fitzpatrick GV et al. (2002) Regional loss of imprinting and growth deficiency in mice with a targeted deletion of KvDMR1.
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| 5. |
Murray A et al. (2002) Mutation in KCNQ1 that has both recessive and dominant characteristics.
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| 6. |
Marx SO et al. (2002) Requirement of a macromolecular signaling complex for beta adrenergic receptor modulation of the KCNQ1-KCNE1 potassium channel.
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| 7. |
Schwartz PJ et al. (2001) Molecular diagnosis in a child with sudden infant death syndrome.
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| 8. |
Cleary MA et al. (2001) Disruption of an imprinted gene cluster by a targeted chromosomal translocation in mice.
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| 9. |
Casimiro MC et al. (2001) Targeted disruption of the Kcnq1 gene produces a mouse model of Jervell and Lange-Nielsen Syndrome.
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| 10. |
Silva J et al. (2003) Establishment of histone h3 methylation on the inactive X chromosome requires transient recruitment of Eed-Enx1 polycomb group complexes.
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| 11. |
Tyson J et al. (2000) Mutational spectrum in the cardioauditory syndrome of Jervell and Lange-Nielsen.
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| 12. |
Engel JR et al. (2000) Epigenotype-phenotype correlations in Beckwith-Wiedemann syndrome.
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| 13. |
Schmitt N et al. (2000) A recessive C-terminal Jervell and Lange-Nielsen mutation of the KCNQ1 channel impairs subunit assembly.
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| 14. |
Ackerman MJ et al. (1999) Molecular diagnosis of the inherited long-QT syndrome in a woman who died after near-drowning.
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| 15. |
Larsen LA et al. (1999) Recessive Romano-Ward syndrome associated with compound heterozygosity for two mutations in the KVLQT1 gene.
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| 16. |
Murray A et al. (1999) Splicing mutations in KCNQ1: a mutation hot spot at codon 344 that produces in frame transcripts.
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| 17. |
Smilinich NJ et al. (1999) A maternally methylated CpG island in KvLQT1 is associated with an antisense paternal transcript and loss of imprinting in Beckwith-Wiedemann syndrome.
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| 18. |
Lee MP et al. (1999) Loss of imprinting of a paternally expressed transcript, with antisense orientation to KVLQT1, occurs frequently in Beckwith-Wiedemann syndrome and is independent of insulin-like growth factor II imprinting.
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| 19. |
Vallon V et al. (2005) KCNQ1-dependent transport in renal and gastrointestinal epithelia.
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| 20. |
Hasegawa K et al. (2014) A novel KCNQ1 missense mutation identified in a patient with juvenile-onset atrial fibrillation causes constitutively open IKs channels.
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| 21. |
Guerrier K et al. (2013) Long QT genetics manifesting as atrial fibrillation.
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| 22. |
Bartos DC et al. (2013) A KCNQ1 mutation causes a high penetrance for familial atrial fibrillation.
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| 23. |
Moretti A et al. (2010) Patient-specific induced pluripotent stem-cell models for long-QT syndrome.
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| 24. |
Roepke TK et al. (2009) Kcne2 deletion uncovers its crucial role in thyroid hormone biosynthesis.
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| 25. |
Das S et al. (2009) Mutation in the S3 segment of KCNQ1 results in familial lone atrial fibrillation.
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| 26. |
Ocorr K et al. (2007) KCNQ potassium channel mutations cause cardiac arrhythmias in Drosophila that mimic the effects of aging.
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| 27. |
Suh BC et al. (2006) Rapid chemically induced changes of PtdIns(4,5)P2 gate KCNQ ion channels.
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| 28. |
Berthet M et al. (1999) C-terminal HERG mutations: the role of hypokalemia and a KCNQ1-associated mutation in cardiac event occurrence.
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| 29. |
Umlauf D et al. (2004) Imprinting along the Kcnq1 domain on mouse chromosome 7 involves repressive histone methylation and recruitment of Polycomb group complexes.
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| 30. |
Lewis A et al. (2004) Imprinting on distal chromosome 7 in the placenta involves repressive histone methylation independent of DNA methylation.
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| 31. |
Casimiro MC et al. (2004) Targeted point mutagenesis of mouse Kcnq1: phenotypic analysis of mice with point mutations that cause Romano-Ward syndrome in humans.
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| 32. |
Elso CM et al. (2004) Heightened susceptibility to chronic gastritis, hyperplasia and metaplasia in Kcnq1 mutant mice.
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| 33. |
Aizawa Y et al. (2004) Truncated KCNQ1 mutant, A178fs/105, forms hetero-multimer channel with wild-type causing a dominant-negative suppression due to trafficking defect.
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| 34. |
Melman YF et al. (2004) KCNE1 binds to the KCNQ1 pore to regulate potassium channel activity.
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| 35. |
Wedekind H et al. (2004) Effective long-term control of cardiac events with beta-blockers in a family with a common LQT1 mutation.
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| 36. |
Chen S et al. (2003) KCNQ1 mutations in patients with a family history of lethal cardiac arrhythmias and sudden death.
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| 37. |
Splawski I et al. (1998) Genomic structure of three long QT syndrome genes: KVLQT1, HERG, and KCNE1.
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| 38. |
Imboden M et al. (2006) Female predominance and transmission distortion in the long-QT syndrome.
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| 39. |
Napolitano C et al. (2005) Genetic testing in the long QT syndrome: development and validation of an efficient approach to genotyping in clinical practice.
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| 40. |
Priori SG et al. (1999) Genetic and molecular basis of cardiac arrhythmias: impact on clinical management part III.
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| 41. |
Priori SG et al. (1999) Genetic and molecular basis of cardiac arrhythmias: impact on clinical management parts I and II.
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| 42. |
Ackerman MJ et al. (1998) A novel mutation in KVLQT1 is the molecular basis of inherited long QT syndrome in a near-drowning patient's family.
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| 43. |
Priori SG et al. (1998) A recessive variant of the Romano-Ward long-QT syndrome?
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| 44. |
Russell MW et al. (1996) KVLQT1 mutations in three families with familial or sporadic long QT syndrome.
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| 45. |
Wang Q et al. (1996) Positional cloning of a novel potassium channel gene: KVLQT1 mutations cause cardiac arrhythmias.
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| 46. |
Neyroud N et al. (1999) Genomic organization of the KCNQ1 K+ channel gene and identification of C-terminal mutations in the long-QT syndrome.
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| 47. |
Tanaka T et al. (1997) Four novel KVLQT1 and four novel HERG mutations in familial long-QT syndrome.
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| 48. |
Millat G et al. (2006) Spectrum of pathogenic mutations and associated polymorphisms in a cohort of 44 unrelated patients with long QT syndrome.
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| 49. |
Tester DJ et al. (2005) Compendium of cardiac channel mutations in 541 consecutive unrelated patients referred for long QT syndrome genetic testing.
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| 50. |
Westenskow P et al. (2004) Compound mutations: a common cause of severe long-QT syndrome.
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| 51. |
Yang P et al. (2002) Allelic variants in long-QT disease genes in patients with drug-associated torsades de pointes.
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| 52. |
Splawski I et al. (2000) Spectrum of mutations in long-QT syndrome genes. KVLQT1, HERG, SCN5A, KCNE1, and KCNE2.
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| 53. |
Jongbloed RJ et al. (1999) Novel KCNQ1 and HERG missense mutations in Dutch long-QT families.
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| 54. |
Zareba W et al. (1998) Influence of genotype on the clinical course of the long-QT syndrome. International Long-QT Syndrome Registry Research Group.
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| 55. |
Arbour L et al. (2008) A KCNQ1 V205M missense mutation causes a high rate of long QT syndrome in a First Nations community of northern British Columbia: a community-based approach to understanding the impact.
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| 56. |
Chen Q et al. (1999) Homozygous deletion in KVLQT1 associated with Jervell and Lange-Nielsen syndrome.
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| 57. |
Neyroud N et al. () Heterozygous mutation in the pore of potassium channel gene KvLQT1 causes an apparently normal phenotype in long QT syndrome.
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| 58. |
Kanters JK et al. (1998) Novel donor splice site mutation in the KVLQT1 gene is associated with long QT syndrome.
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| 59. |
Li H et al. (1998) New mutations in the KVLQT1 potassium channel that cause long-QT syndrome.
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| 60. |
Donger C et al. (1997) KVLQT1 C-terminal missense mutation causes a forme fruste long-QT syndrome.
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| 61. |
Shalaby FY et al. (1997) Dominant-negative KvLQT1 mutations underlie the LQT1 form of long QT syndrome.
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| 62. |
Ackerman MJ et al. (1997) Ion channels--basic science and clinical disease.
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| 63. |
Splawski I et al. (1997) Molecular basis of the long-QT syndrome associated with deafness.
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| 64. |
Yang WP et al. (1997) KvLQT1, a voltage-gated potassium channel responsible for human cardiac arrhythmias.
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| 65. |
Neyroud N et al. (1997) A novel mutation in the potassium channel gene KVLQT1 causes the Jervell and Lange-Nielsen cardioauditory syndrome.
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| 66. |
Lee MP et al. (1997) Human KVLQT1 gene shows tissue-specific imprinting and encompasses Beckwith-Wiedemann syndrome chromosomal rearrangements.
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| 67. |
Mannens M et al. (1997) KVLQT1, the rhythm of imprinting.
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| 68. |
Sanguinetti MC et al. (1996) Coassembly of K(V)LQT1 and minK (IsK) proteins to form cardiac I(Ks) potassium channel.
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| 69. |
Barhanin J et al. (1996) K(V)LQT1 and lsK (minK) proteins associate to form the I(Ks) cardiac potassium current.
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| 70. |
Reardon W et al. (1993) Consanguinity, cardiac arrest, hearing impairment, and ECG abnormalities: counselling pitfalls in the Romano-Ward syndrome.
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| 71. |
Bellocq C et al. (2004) Mutation in the KCNQ1 gene leading to the short QT-interval syndrome.
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| 72. |
Johnson JN et al. (2008) Prevalence of early-onset atrial fibrillation in congenital long QT syndrome.
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| 73. |
Orphanet article
Orphanet ID 122800
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| 74. |
NCBI article
NCBI 3784
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| 75. |
OMIM.ORG article
Omim 607542
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| 76. |
Wikipedia article
Wikipedia EN (KvLQT1)
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Update: June 23, 2025