Variant 8-36833652-G-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM2PP3_Strong

The NM_001031836.3(KCNU1):c.1205G>A(p.Arg402Gln) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000484 in 1,447,238 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000048 ( 0 hom. )

Consequence

KCNU1
NM_001031836.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.99

Variant links:

Genes affected

KCNU1 (HGNC:18867): (potassium calcium-activated channel subfamily U member 1) This gene encodes a member of the potassium channel family of proteins. The encoded voltage-gated ion channel allows the outward flow of potassium ions during plasma membrane hyperpolarization in sperm. Opening of this channel may be regulated by calcium ion levels. Homozygous knockout mice that lack the related mouse gene exhibit male sterility. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Dec 2015]

KCNU1 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.961

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
KCNU1	NM_001031836.3 linkuse as main transcript	c.1205G>A	p.Arg402Gln	missense_variant	11/27	ENST00000399881.8	NP_001027006.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
KCNU1	ENST00000399881.8 linkuse as main transcript	c.1205G>A	p.Arg402Gln	missense_variant	11/27	2	NM_001031836.3	ENSP00000382770	P1
KCNU1	ENST00000522372.5 linkuse as main transcript	c.1205G>A	p.Arg402Gln	missense_variant, NMD_transcript_variant	11/28	1		ENSP00000428552

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000484

AC:

AN:

1447238

Hom.:

Cov.:

AF XY:

0.00000555

AC XY:

AN XY:

720896

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000637

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Bravo

AF:

0.0000113

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Apr 17, 2024

The c.1205G>A (p.R402Q) alteration is located in exon 11 (coding exon 11) of the KCNU1 gene. This alteration results from a G to A substitution at nucleotide position 1205, causing the arginine (R) at amino acid position 402 to be replaced by a glutamine (Q). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.27

BayesDel_addAF

Pathogenic

0.19

BayesDel_noAF

Uncertain

0.040

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Uncertain

0.47

Eigen

Uncertain

0.58

Eigen_PC

Uncertain

0.45

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.87

M_CAP

Uncertain

0.12

MetaRNN

Pathogenic

0.96

MetaSVM

Uncertain

0.099

MutationAssessor

Pathogenic

3.0

MutationTaster

Benign

0.86

PrimateAI

Benign

0.42

PROVEAN

Uncertain

-3.8

REVEL

Uncertain

0.63

Sift

Pathogenic

0.0

Sift4G

Pathogenic

0.0

Polyphen

1.0

Vest4

0.77

MutPred

0.79

Loss of helix (P = 0.1299);

MVP

0.85

MPC

0.19

ClinPred

1.0

GERP RS

5.3

Varity_R

0.84

gMVP

0.61

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.070

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over