rs45570140
Positions:
Variant summary
Our verdict is Benign. Variant got -14 ACMG points: 0P and 14B. BP4_StrongBP6_ModerateBS1BS2
The NM_000218.3(KCNQ1):c.*305A>C variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00208 in 621,918 control chromosomes in the GnomAD database, including 36 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).
Frequency
Genomes: 𝑓 0.0014 ( 5 hom., cov: 33)
Exomes 𝑓: 0.0023 ( 31 hom. )
Consequence
KCNQ1
NM_000218.3 3_prime_UTR
NM_000218.3 3_prime_UTR
Scores
2
Clinical Significance
Conservation
PhyloP100: -1.97
Genes affected
KCNQ1 (HGNC:6294): (potassium voltage-gated channel subfamily Q member 1) This gene encodes a voltage-gated potassium channel required for repolarization phase of the cardiac action potential. This protein can form heteromultimers with two other potassium channel proteins, KCNE1 and KCNE3. Mutations in this gene are associated with hereditary long QT syndrome 1 (also known as Romano-Ward syndrome), Jervell and Lange-Nielsen syndrome, and familial atrial fibrillation. This gene exhibits tissue-specific imprinting, with preferential expression from the maternal allele in some tissues, and biallelic expression in others. This gene is located in a region of chromosome 11 amongst other imprinted genes that are associated with Beckwith-Wiedemann syndrome (BWS), and itself has been shown to be disrupted by chromosomal rearrangements in patients with BWS. Alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Aug 2011]
Genome browser will be placed here
ACMG classification
Classification made for transcript
Verdict is Benign. Variant got -14 ACMG points.
BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.9).
BP6
Variant 11-2848308-A-C is Benign according to our data. Variant chr11-2848308-A-C is described in ClinVar as [Likely_benign]. Clinvar id is 304241.Status of the report is criteria_provided_single_submitter, 1 stars.
BS1
Variant frequency is greater than expected in population amr. gnomad4_exome allele frequency = 0.00232 (1090/469584) while in subpopulation AMR AF= 0.0328 (1024/31206). AF 95% confidence interval is 0.0311. There are 31 homozygotes in gnomad4_exome. There are 436 alleles in male gnomad4_exome subpopulation. Median coverage is 0. This position pass quality control queck.
BS2
High Homozygotes in GnomAd4 at 5 AD,AR,Digenic gene
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
|---|---|---|---|---|---|---|---|
| KCNQ1 | NM_000218.3 | c.*305A>C | 3_prime_UTR_variant | 16/16 | ENST00000155840.12 | ||
| KCNQ1-AS1 | NR_130721.1 | n.778-7866T>G | intron_variant, non_coding_transcript_variant |
Ensembl
| Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
|---|---|---|---|---|---|---|---|---|---|
| KCNQ1 | ENST00000155840.12 | c.*305A>C | 3_prime_UTR_variant | 16/16 | 1 | NM_000218.3 | P1 | ||
| KCNQ1-AS1 | ENST00000440887.2 | n.777-7866T>G | intron_variant, non_coding_transcript_variant | 5 |
Frequencies
GnomAD3 genomes 0.00135 AC: 205AN: 152216Hom.: 5 Cov.: 33
GnomAD3 genomes
AF:
AC:
205
AN:
152216
Hom.:
Cov.:
33
Gnomad AFR
AF:
Gnomad AMI
AF:
Gnomad AMR
AF:
Gnomad ASJ
AF:
Gnomad EAS
AF:
Gnomad SAS
AF:
Gnomad FIN
AF:
Gnomad MID
AF:
Gnomad NFE
AF:
Gnomad OTH
AF:
GnomAD3 exomes AF: 0.00690 AC: 846AN: 122534Hom.: 24 AF XY: 0.00492 AC XY: 329AN XY: 66880
GnomAD3 exomes
AF:
AC:
846
AN:
122534
Hom.:
AF XY:
AC XY:
329
AN XY:
66880
Gnomad AFR exome
AF:
Gnomad AMR exome
AF:
Gnomad ASJ exome
AF:
Gnomad EAS exome
AF:
Gnomad SAS exome
AF:
Gnomad FIN exome
AF:
Gnomad NFE exome
AF:
Gnomad OTH exome
AF:
GnomAD4 exome AF: 0.00232 AC: 1090AN: 469584Hom.: 31 Cov.: 0 AF XY: 0.00171 AC XY: 436AN XY: 254290
GnomAD4 exome
AF:
AC:
1090
AN:
469584
Hom.:
Cov.:
0
AF XY:
AC XY:
436
AN XY:
254290
Gnomad4 AFR exome
AF:
Gnomad4 AMR exome
AF:
Gnomad4 ASJ exome
AF:
Gnomad4 EAS exome
AF:
Gnomad4 SAS exome
AF:
Gnomad4 FIN exome
AF:
Gnomad4 NFE exome
AF:
Gnomad4 OTH exome
AF:
GnomAD4 genome 0.00135 AC: 206AN: 152334Hom.: 5 Cov.: 33 AF XY: 0.00157 AC XY: 117AN XY: 74490
GnomAD4 genome
AF:
AC:
206
AN:
152334
Hom.:
Cov.:
33
AF XY:
AC XY:
117
AN XY:
74490
Gnomad4 AFR
AF:
Gnomad4 AMR
AF:
Gnomad4 ASJ
AF:
Gnomad4 EAS
AF:
Gnomad4 SAS
AF:
Gnomad4 FIN
AF:
Gnomad4 NFE
AF:
Gnomad4 OTH
AF:
Alfa
AF:
Hom.:
Bravo
AF:
Asia WGS
AF:
AC:
4
AN:
3478
ClinVar
Significance: Benign/Likely benign
Submissions summary: Benign:5
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
Long QT syndrome 1 Benign:1
| Benign, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | Jan 13, 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. - |
Atrial fibrillation, familial, 3 Benign:1
| Likely benign, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | Jan 13, 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 likely benign is not then subjected to further curation. The score for this variant resulted in a classification of likely benign for this disease. - |
Jervell and Lange-Nielsen syndrome 1 Benign:1
| Benign, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | Jan 13, 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. - |
Short QT syndrome type 2 Benign:1
| Benign, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | Jan 13, 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. - |
Congenital long QT syndrome Benign:1
| Likely benign, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | Jun 14, 2016 | - - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
CADD
Benign
DANN
Benign
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at