chr6-73133468-G-T

Variant summary

Our verdict is Uncertain significance. Variant got 5 ACMG points: 7P and 2B. PM1PM2PP2PP3_ModerateBP6_Moderate

The ENST00000370398.6(KCNQ5):​c.1295G>T​(p.Gly432Val) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000274 in 1,461,884 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 Benign (★).

Frequency

Genomes: not found (cov: 33)
Exomes 𝑓: 0.0000027 ( 0 hom. )

Consequence

KCNQ5
ENST00000370398.6 missense

Scores

8
9
2

Clinical Significance

Benign criteria provided, single submitter B:1

Conservation

PhyloP100: 9.52
Variant links:
Genes affected
KCNQ5 (HGNC:6299): (potassium voltage-gated channel subfamily Q member 5) This gene is a member of the KCNQ potassium channel gene family that is differentially expressed in subregions of the brain and in skeletal muscle. The protein encoded by this gene yields currents that activate slowly with depolarization and can form heteromeric channels with the protein encoded by the KCNQ3 gene. Currents expressed from this protein have voltage dependences and inhibitor sensitivities in common with M-currents. They are also inhibited by M1 muscarinic receptor activation. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, May 2009]
KCNQ5-AS1 (HGNC:40323): (KCNQ5 antisense RNA 1)

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 5 ACMG points.

PM1
In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 2 benign, 5 uncertain in ENST00000370398.6
PM2
Very rare variant in population databases, with high coverage;
PP2
Missense variant in gene, where missense usually causes diseases (based on misZ statistic), KCNQ5. . Gene score misZ 3.3177 (greater than the threshold 3.09). Trascript score misZ 3.1292 (greater than threshold 3.09). GenCC has associacion of gene with autosomal dominant non-syndromic intellectual disability, intellectual disability, autosomal dominant 46.
PP3
MetaRNN computational evidence supports a deleterious effect, 0.864
BP6
Variant 6-73133468-G-T is Benign according to our data. Variant chr6-73133468-G-T is described in ClinVar as [Benign]. Clinvar id is 2766000.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
KCNQ5NM_019842.4 linkuse as main transcriptc.1295G>T p.Gly432Val missense_variant 10/14 ENST00000370398.6 NP_062816.2

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
KCNQ5ENST00000370398.6 linkuse as main transcriptc.1295G>T p.Gly432Val missense_variant 10/141 NM_019842.4 ENSP00000359425 P4Q9NR82-1
KCNQ5-AS1ENST00000666538.1 linkuse as main transcriptn.577-1085C>A intron_variant, non_coding_transcript_variant

Frequencies

GnomAD3 genomes
Cov.:
33
GnomAD4 exome
AF:
0.00000274
AC:
4
AN:
1461884
Hom.:
0
Cov.:
31
AF XY:
0.00000413
AC XY:
3
AN XY:
727244
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:
0.00000360
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
Cov.:
33

ClinVar

Significance: Benign
Submissions summary: Benign:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

not provided Benign:1
Benign, criteria provided, single submitterclinical testingLabcorp Genetics (formerly Invitae), LabcorpNov 28, 2023- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Uncertain
0.55
BayesDel_addAF
Pathogenic
0.52
D
BayesDel_noAF
Pathogenic
0.52
CADD
Pathogenic
28
DANN
Uncertain
1.0
DEOGEN2
Benign
0.37
.;.;.;T;.;T;.
Eigen
Uncertain
0.68
Eigen_PC
Pathogenic
0.73
FATHMM_MKL
Pathogenic
0.99
D
LIST_S2
Uncertain
0.92
D;T;D;D;D;D;T
M_CAP
Pathogenic
0.44
D
MetaRNN
Pathogenic
0.86
D;D;D;D;D;D;D
MetaSVM
Pathogenic
1.1
D
MutationAssessor
Uncertain
2.5
.;.;.;.;.;M;.
MutationTaster
Benign
1.0
D;D;D;D;D;D;D
PrimateAI
Uncertain
0.76
T
PROVEAN
Uncertain
-4.0
D;D;D;D;.;D;.
REVEL
Pathogenic
0.84
Sift
Uncertain
0.016
D;D;D;D;.;D;.
Sift4G
Uncertain
0.0070
D;D;D;D;D;D;D
Polyphen
0.46, 0.94
.;.;.;.;.;P;P
Vest4
0.87
MutPred
0.42
Loss of methylation at R450 (P = 0.0501);.;.;.;Loss of methylation at R450 (P = 0.0501);.;.;
MVP
0.90
MPC
1.9
ClinPred
0.99
D
GERP RS
5.6
Varity_R
0.65
gMVP
0.72

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr6-73843191; API