rs12317962

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_StrongBA1

The NM_014505.6(KCNMB4):​c.337-1407G>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.256 in 151,948 control chromosomes in the GnomAD database, including 5,392 homozygotes. 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 0.26 ( 5392 hom., cov: 32)

Consequence

KCNMB4
NM_014505.6 intron

Scores

2

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.314
Variant links:
Genes affected
KCNMB4 (HGNC:6289): (potassium calcium-activated channel subfamily M regulatory beta subunit 4) MaxiK channels are large conductance, voltage and calcium-sensitive potassium channels which are fundamental to the control of smooth muscle tone and neuronal excitability. MaxiK channels can be formed by 2 subunits: the pore-forming alpha subunit and the modulatory beta subunit. The protein encoded by this gene is an auxiliary beta subunit which slows activation kinetics, leads to steeper calcium sensitivity, and shifts the voltage range of current activation to more negative potentials than does the beta 1 subunit. [provided by RefSeq, Jul 2008]

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -12 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.9).
BA1
GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.485 is higher than 0.05.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
KCNMB4NM_014505.6 linkc.337-1407G>T intron_variant ENST00000258111.5 NP_055320.4 Q86W47
KCNMB4XM_011538188.3 linkc.337-1407G>T intron_variant XP_011536490.1
KCNMB4XM_047428701.1 linkc.337-1407G>T intron_variant XP_047284657.1

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
KCNMB4ENST00000258111.5 linkc.337-1407G>T intron_variant 1 NM_014505.6 ENSP00000258111.4 Q86W47

Frequencies

GnomAD3 genomes
AF:
0.256
AC:
38924
AN:
151830
Hom.:
5390
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.258
Gnomad AMI
AF:
0.115
Gnomad AMR
AF:
0.347
Gnomad ASJ
AF:
0.211
Gnomad EAS
AF:
0.502
Gnomad SAS
AF:
0.324
Gnomad FIN
AF:
0.277
Gnomad MID
AF:
0.263
Gnomad NFE
AF:
0.212
Gnomad OTH
AF:
0.269
We have no GnomAD4 exomes data on this position. Probably position not covered by the project.
GnomAD4 genome
AF:
0.256
AC:
38956
AN:
151948
Hom.:
5392
Cov.:
32
AF XY:
0.259
AC XY:
19233
AN XY:
74300
show subpopulations
Gnomad4 AFR
AF:
0.258
Gnomad4 AMR
AF:
0.347
Gnomad4 ASJ
AF:
0.211
Gnomad4 EAS
AF:
0.502
Gnomad4 SAS
AF:
0.324
Gnomad4 FIN
AF:
0.277
Gnomad4 NFE
AF:
0.212
Gnomad4 OTH
AF:
0.272
Alfa
AF:
0.225
Hom.:
1911
Bravo
AF:
0.267
Asia WGS
AF:
0.439
AC:
1525
AN:
3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.90
CADD
Benign
2.2
DANN
Benign
0.49

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

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

Other links and lift over

dbSNP: rs12317962; hg19: chr12-70792582; API