chr21-34450274-A-G

Position:

• chr21-34450274-A-G

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BP4_Strong

The NM_000219.6(KCNE1):​c.-50-590T>C variant causes a intron change involving the alteration of a non-conserved nucleotide. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: 𝑓 0.013 (20 hom., cov: 0)
  • Failed GnomAD Quality Control
• Consequence: KCNE1 NM_000219.6 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.896

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]

ACMG classification

Verdict is Likely_benign. Variant got -4 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.95).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
KCNE1	NM_000219.6	c.-50-590T>C		intron_variant		ENST00000399286.3	NP_000210.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
KCNE1	ENST00000399286.3	c.-50-590T>C		intron_variant		1	NM_000219.6	ENSP00000382226.2

Frequencies

GnomAD3 genomes AF: 0.00 AC: 554 AN: 43596 Hom.: 20 Cov.: 0 FAILED QC

Gnomad AFR AF: 0.0352

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0163

Gnomad ASJ AF: 0.00930

Gnomad EAS AF: 0.0134

Gnomad SAS AF: 0.0150

Gnomad FIN AF: 0.0151

Gnomad MID AF: 0.0294

Gnomad NFE AF: 0.00709

Gnomad OTH AF: 0.0170

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Data not reliable, filtered out with message: AS_VQSR AF: 0.0127 AC: 552 AN: 43606 Hom.: 20 Cov.: 0 AF XY: 0.0115 AC XY: 240 AN XY: 20894

Gnomad4 AFR AF: 0.0351

Gnomad4 AMR AF: 0.0163

Gnomad4 ASJ AF: 0.00930

Gnomad4 EAS AF: 0.0134

Gnomad4 SAS AF: 0.0142

Gnomad4 FIN AF: 0.0151

Gnomad4 NFE AF: 0.00710

Gnomad4 OTH AF: 0.0170

Alfa AF: 0.692 Hom.: 36017

Asia WGS AF: 0.827 AC: 2878 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.95
CADD	Benign	1.1
DANN	Benign	0.40

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

Publications

LitVar

Other links and lift over

dbSNP: rs1547356; hg19: chr21-35822572;