Genetic Variant KCNK16:p.Ser91Asn (chr6-39319075-C-T) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_001135106.2(KCNK16):c.272G>A(p.Ser91Asn) variant causes a missense change. The variant allele was found at a frequency of 0.000169 in 1,614,010 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00011 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00018 ( 0 hom. )

Consequence

KCNK16
NM_001135106.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.38

Variant links:

Genes affected

KCNK16 (HGNC:14464): (potassium two pore domain channel subfamily K member 16) The protein encoded by this gene belongs to the family of potassium channel proteins containing two pore-forming P domains. This channel is an open rectifier which primarily passes outward current under physiological K+ concentrations. This gene is expressed predominantly in the pancreas and is activated at alkaline pH. Several alternatively spliced transcript variants encoding different isoforms have been identified for this gene. [provided by RefSeq, Sep 2008]

KCNK16 links:

LOC105375047 (HGNC:):

LOC105375047 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.2682805).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KCNK16	NM_001135106.2 link	c.272G>A	p.Ser91Asn	missense_variant	Exon 2 of 5	ENST00000437525.3	NP_001128578.1	Q96T55-3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
KCNK16	ENST00000437525.3 link	c.272G>A	p.Ser91Asn	missense_variant	Exon 2 of 5	1	NM_001135106.2	ENSP00000415375.2		Q96T55-3

Frequencies

GnomAD3 genomes

AF:

0.000112

AC:

AN:

152138

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

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:

0.000221

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000716

AC:

AN:

251480

Hom.:

AF XY:

0.0000589

AC XY:

AN XY:

135912

show subpopulations

Gnomad AFR exome

AF:

0.0000615

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000149

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000175

AC:

256

AN:

1461872

Hom.:

Cov.:

AF XY:

0.000151

AC XY:

110

AN XY:

727240

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

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:

0.000225

Gnomad4 OTH exome

AF:

0.0000828

GnomAD4 genome

AF:

0.000112

AC:

AN:

152138

Hom.:

Cov.:

AF XY:

0.000121

AC XY:

AN XY:

74308

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.0000655

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000221

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000229

Hom.:

Bravo

AF:

0.0000756

ExAC

AF:

0.0000494

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.000178

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Apr 26, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.272G>A (p.S91N) alteration is located in exon 2 (coding exon 2) of the KCNK16 gene. This alteration results from a G to A substitution at nucleotide position 272, causing the serine (S) at amino acid position 91 to be replaced by an asparagine (N). 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

Uncertain

0.45

BayesDel_addAF

Benign

-0.35

BayesDel_noAF

Benign

-0.50

CADD

Pathogenic

DANN

Uncertain

0.99

DEOGEN2

Benign

0.083

T;.;.;.;.

Eigen

Uncertain

0.37

Eigen_PC

Uncertain

0.46

FATHMM_MKL

Uncertain

0.94

LIST_S2

Benign

0.84

T;T;T;T;T

M_CAP

Benign

0.016

MetaRNN

Benign

0.27

T;T;T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.9

L;L;.;L;L

PrimateAI

Uncertain

0.67

PROVEAN

Benign

-1.4

N;N;N;N;N

REVEL

Benign

0.096

Sift

Benign

0.15

T;T;T;T;T

Sift4G

Benign

0.28

T;T;T;T;T

Polyphen

0.26

B;D;.;B;.

Vest4

0.64

MVP

0.27

MPC

0.69

ClinPred

0.47

GERP RS

5.3

Varity_R

0.38

gMVP

0.73

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.

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