rs752833096

Variant summary

Our verdict is Likely benign. The variant received -6 ACMG points: 0P and 6B. BP4_ModerateBS2

The NM_002235.5(KCNA6):​c.46C>A​(p.Arg16Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000018 in 1,558,972 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R16C) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 32)
Exomes 𝑓: 0.000018 ( 0 hom. )

Consequence

KCNA6
NM_002235.5 missense

Scores

1
3
14

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 1.32

Publications

0 publications found
Variant links:
Genes affected
KCNA6 (HGNC:6225): (potassium voltage-gated channel subfamily A member 6) Potassium channels represent the most complex class of voltage-gated ion channels from both functional and structural standpoints. Their diverse functions include regulating neurotransmitter release, heart rate, insulin secretion, neuronal excitability, epithelial electrolyte transport, smooth muscle contraction, and cell volume. Four sequence-related potassium channel genes - shaker, shaw, shab, and shal - have been identified in Drosophila, and each has been shown to have human homolog(s). This gene encodes a member of the potassium channel, voltage-gated, shaker-related subfamily. This member contains six membrane-spanning domains with a shaker-type repeat in the fourth segment. It belongs to the delayed rectifier class. The coding region of this gene is intronless, and the gene is clustered with genes KCNA1 and KCNA5 on chromosome 12. [provided by RefSeq, Jul 2008]
GALNT8 (HGNC:4130): (polypeptide N-acetylgalactosaminyltransferase 8) This gene encodes a member of the UDP-N-acetyl-alpha-D-galactosamine:polypeptide N-acetylgalactosaminyltransferase (GalNAc-T) family of enzymes. GalNAc-Ts initiate mucin-type O-linked glycosylation in the Golgi apparatus by catalyzing the transfer of GalNAc to serine and threonine residues on target proteins. They are characterized by an N-terminal transmembrane domain, a stem region, a lumenal catalytic domain containing a GT1 motif and Gal/GalNAc transferase motif, and a C-terminal ricin/lectin-like domain. GalNAc-Ts have different, but overlapping, substrate specificities and patterns of expression. [provided by RefSeq, Jul 2008]

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -6 ACMG points.

BP4
Computational evidence support a benign effect (MetaRNN=0.11534929).
BS2
High AC in GnomAdExome4 at 25 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_002235.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
KCNA6
NM_002235.5
MANE Select
c.46C>Ap.Arg16Ser
missense
Exon 1 of 1NP_002226.1P17658
KCNA6
NR_172523.1
n.754C>A
non_coding_transcript_exon
Exon 1 of 3
KCNA6
NR_172524.1
n.754C>A
non_coding_transcript_exon
Exon 1 of 2

Ensembl Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
KCNA6
ENST00000280684.4
TSL:6 MANE Select
c.46C>Ap.Arg16Ser
missense
Exon 1 of 1ENSP00000280684.3P17658
GALNT8
ENST00000542998.5
TSL:3
c.310-40651C>A
intron
N/AENSP00000440383.1H0YFU9
KCNA6-AS1
ENST00000662877.1
n.410-3219G>T
intron
N/A

Frequencies

GnomAD3 genomes
AF:
0.0000198
AC:
3
AN:
151840
Hom.:
0
Cov.:
32
show subpopulations
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:
0.0000442
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.0000147
AC:
3
AN:
203834
AF XY:
0.00000912
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000317
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000178
AC:
25
AN:
1407132
Hom.:
0
Cov.:
30
AF XY:
0.0000202
AC XY:
14
AN XY:
694080
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
32704
American (AMR)
AF:
0.00
AC:
0
AN:
41940
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
22692
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39278
South Asian (SAS)
AF:
0.00
AC:
0
AN:
77388
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
42172
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5510
European-Non Finnish (NFE)
AF:
0.0000230
AC:
25
AN:
1087038
Other (OTH)
AF:
0.00
AC:
0
AN:
58410
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.489
Heterozygous variant carriers
0
2
3
5
6
8
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
2
4
6
8
10
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
GnomAD4 genome
AF:
0.0000198
AC:
3
AN:
151840
Hom.:
0
Cov.:
32
AF XY:
0.0000135
AC XY:
1
AN XY:
74160
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
41334
American (AMR)
AF:
0.00
AC:
0
AN:
15254
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3472
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5142
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4808
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10592
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
312
European-Non Finnish (NFE)
AF:
0.0000442
AC:
3
AN:
67930
Other (OTH)
AF:
0.00
AC:
0
AN:
2086
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.508
Heterozygous variant carriers
0
1
1
2
2
3
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Variant carriers
0
2
4
6
8
10
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
Alfa
AF:
0.0000435
Hom.:
0
Bravo
AF:
0.00000756
ExAC
AF:
0.00000830
AC:
1

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.11
BayesDel_addAF
Benign
-0.033
T
BayesDel_noAF
Benign
-0.19
CADD
Benign
19
DANN
Benign
0.96
DEOGEN2
Benign
0.086
T
Eigen
Benign
-0.60
Eigen_PC
Benign
-0.42
FATHMM_MKL
Benign
0.66
D
LIST_S2
Benign
0.46
T
M_CAP
Pathogenic
0.52
D
MetaRNN
Benign
0.12
T
MetaSVM
Uncertain
0.14
D
MutationAssessor
Benign
0.0
N
PhyloP100
1.3
PrimateAI
Uncertain
0.74
T
PROVEAN
Benign
0.40
N
REVEL
Uncertain
0.30
Sift
Benign
1.0
T
Sift4G
Benign
0.79
T
Polyphen
0.0030
B
Vest4
0.16
MutPred
0.25
Gain of glycosylation at R16 (P = 0.0029)
MVP
0.54
MPC
1.2
ClinPred
0.12
T
GERP RS
4.5
Varity_R
0.26
gMVP
0.57
Mutation Taster
=83/17
polymorphism

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.020
Details are displayed if max score is > 0.2

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

Publications

Other links and lift over

dbSNP: rs752833096; hg19: chr12-4919253; API