rs41314807
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Variant summary
Our verdict is Benign. Variant got -16 ACMG points: 0P and 16B. BP4_StrongBP6_Very_StrongBS1
The NM_000219.6(KCNE1):c.*268C>T variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).
Frequency
Genomes: 𝑓 0.010 ( 64 hom., cov: 11)
Exomes 𝑓: 0.0011 ( 1 hom. )
Failed GnomAD Quality Control
Consequence
KCNE1
NM_000219.6 3_prime_UTR
NM_000219.6 3_prime_UTR
Scores
2
Clinical Significance
Conservation
PhyloP100: -0.414
Genes affected
KCNE1 (HGNC:6240): (potassium voltage-gated channel subfamily E regulatory subunit 1) The product of this gene belongs to the potassium channel KCNE family. Potassium ion channels are essential to many cellular functions and show a high degree of diversity, varying in their electrophysiologic and pharmacologic properties. This gene encodes a transmembrane protein known to associate with the product of the KVLQT1 gene to form the delayed rectifier potassium channel. Mutation in this gene are associated with both Jervell and Lange-Nielsen and Romano-Ward forms of long-QT syndrome. Alternatively spliced transcript variants encoding the same protein have been identified. [provided by RefSeq, Jul 2008]
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ACMG classification
Classification made for transcript
Verdict is Benign. Variant got -16 ACMG points.
BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.88).
BP6
Variant 21-34448977-G-A is Benign according to our data. Variant chr21-34448977-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 339766.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
BS1
Variant frequency is greater than expected in population afr. gnomad4_exome allele frequency = 0.00114 (203/177378) while in subpopulation AFR AF= 0.0195 (127/6514). AF 95% confidence interval is 0.0167. There are 1 homozygotes in gnomad4_exome. There are 84 alleles in male gnomad4_exome subpopulation. Median coverage is 0. This position pass quality control queck.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
KCNE1 | NM_000219.6 | c.*268C>T | 3_prime_UTR_variant | 4/4 | ENST00000399286.3 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
KCNE1 | ENST00000399286.3 | c.*268C>T | 3_prime_UTR_variant | 4/4 | 1 | NM_000219.6 | P1 |
Frequencies
GnomAD3 genomes AF: 0.00 AC: 918AN: 87990Hom.: 64 Cov.: 11 FAILED QC
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GnomAD4 exome AF: 0.00114 AC: 203AN: 177378Hom.: 1 Cov.: 0 AF XY: 0.000924 AC XY: 84AN XY: 90880
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GnomAD4 genome Data not reliable, filtered out with message: AS_VQSR AF: 0.0104 AC: 919AN: 88102Hom.: 64 Cov.: 11 AF XY: 0.00972 AC XY: 409AN XY: 42088
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Data not reliable, filtered out with message: AS_VQSR
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ClinVar
Significance: Benign/Likely benign
Submissions summary: Benign:4
Revision: criteria provided, multiple submitters, no conflicts
LINK: link
Submissions by phenotype
Long QT syndrome 5 Benign:1
Benign, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | Jan 12, 2018 | This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. - |
not provided Benign:1
Likely benign, criteria provided, single submitter | clinical testing | GeneDx | Jul 06, 2018 | - - |
Congenital long QT syndrome Benign:1
Likely benign, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | Jun 14, 2016 | - - |
Jervell and Lange-Nielsen syndrome 2 Benign:1
Benign, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | Jan 12, 2018 | This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. - |
Computational scores
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Name
Calibrated prediction
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BayesDel_noAF
Benign
CADD
Benign
DANN
Benign
Splicing
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SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at