rs187686559

Variant names:

• chr21-34449605-C-A
• rs187686559
• NM_000219.6:c.30G>T

Your query was ambiguous. Multiple possible variants found:

• chr21-34449605-C-A
• chr21-34449605-C-T

Variant summary

Our verdict is Benign. The variant received -7 ACMG points: 0P and 7B. BP4_Strong BP6_Moderate BP7

The NM_000219.6(KCNE1):​c.30G>T​(p.Thr10Thr) variant causes a synonymous 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 (★). Synonymous variant affecting the same amino acid position (i.e. T10T) has been classified as Uncertain significance.

• Frequency:
  • Genomes: 𝑓 0.0 (0 hom., cov: 13)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: KCNE1 NM_000219.6 synonymous
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -1.94
• Publications: 5 publications found

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]

KCNE1 Gene-Disease associations (from GenCC):

• long QT syndrome 5

  Inheritance: AD Classification: DEFINITIVE, STRONG, LIMITED Submitted by: ClinGen, G2P, Labcorp Genetics (formerly Invitae), Ambry Genetics
• Jervell and Lange-Nielsen syndrome 2

  Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P, PanelApp Australia
• Jervell and Lange-Nielsen syndrome

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• atrial fibrillation

  Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics

ACMG classification

Our verdict: Benign. The variant received -7 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.68).
• BP6: Variant 21-34449605-C-A is Benign according to our data. Variant chr21-34449605-C-A is described in ClinVar as Likely_benign. ClinVar VariationId is 36427.Status of the report is criteria_provided_single_submitter, 1 stars.
• BP7: Synonymous conserved (PhyloP=-1.94 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000219.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	KCNE1	NM_000219.6	MANE Select	c.30G>T	p.Thr10Thr	synonymous	Exon 4 of 4	NP_000210.2
	KCNE1	NM_001127668.4		c.30G>T	p.Thr10Thr	synonymous	Exon 3 of 3	NP_001121140.1
	KCNE1	NM_001127669.4		c.30G>T	p.Thr10Thr	synonymous	Exon 3 of 3	NP_001121141.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	KCNE1	ENST00000399286.3	TSL:1 MANE Select	c.30G>T	p.Thr10Thr	synonymous	Exon 4 of 4	ENSP00000382226.2
	KCNE1	ENST00000399289.7	TSL:1	c.30G>T	p.Thr10Thr	synonymous	Exon 3 of 3	ENSP00000382228.3
	KCNE1	ENST00000416357.6	TSL:1	c.30G>T	p.Thr10Thr	synonymous	Exon 2 of 2	ENSP00000416258.2

Frequencies

GnomAD3 genomes AF: 0.00 AC: 0 AN: 91294 Hom.: 0 Cov.: 13

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD4 exome Data not reliable, filtered out with message: AC0;AS_VQSR AF: 0.00 AC: 0 AN: 822620 Hom.: 0 Cov.: 12 AF XY: 0.00 AC XY: 0 AN XY: 422166

African (AFR) AF: 0.00 AC: 0 AN: 20108

American (AMR) AF: 0.00 AC: 0 AN: 37106

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 19180

East Asian (EAS) AF: 0.00 AC: 0 AN: 33324

South Asian (SAS) AF: 0.00 AC: 0 AN: 64122

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 42514

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 3874

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 563882

Other (OTH) AF: 0.00 AC: 0 AN: 38510

GnomAD4 genome Data not reliable, filtered out with message: AC0;AS_VQSR AF: 0.00 AC: 0 AN: 91294 Hom.: 0 Cov.: 13 AF XY: 0.00 AC XY: 0 AN XY: 44006

African (AFR) AF: 0.00 AC: 0 AN: 22352

American (AMR) AF: 0.00 AC: 0 AN: 9806

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 2022

East Asian (EAS) AF: 0.00 AC: 0 AN: 2656

South Asian (SAS) AF: 0.00 AC: 0 AN: 2724

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 7432

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 234

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 42390

Other (OTH) AF: 0.00 AC: 0 AN: 1226

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ClinVar

ClinVar submissions as Germline

Significance: Likely benign

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	-	1	Cardiac arrhythmia (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.68
CADD	Benign	0.24
DANN	Benign	0.43
PhyloP100		-1.9

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs187686559; hg19: chr21-35821903;