2-47521587-T-A

Position:

• chr2-47521587-T-A

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Moderate BP6_Moderate

The NM_022055.2(KCNK12):​c.613A>T​(p.Ser205Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: KCNK12 NM_022055.2 missense
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 0.653

Genes affected

KCNK12 (HGNC:6274): (potassium two pore domain channel subfamily K member 12) This gene encodes one of the members of the superfamily of potassium channel proteins containing two pore-forming P domains. The product of this gene has not been shown to be a functional channel, however, it may require other non-pore-forming proteins for activity. [provided by RefSeq, Jul 2008]

MSH2 (HGNC:7325): (mutS homolog 2) This locus is frequently mutated in hereditary nonpolyposis colon cancer (HNPCC). When cloned, it was discovered to be a human homolog of the E. coli mismatch repair gene mutS, consistent with the characteristic alterations in microsatellite sequences (RER+ phenotype) found in HNPCC. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Apr 2012]

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.18000749).
• BP6: Variant 2-47521587-T-A is Benign according to our data. Variant chr2-47521587-T-A is described in ClinVar as [Likely_benign]. Clinvar id is 2534203.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
KCNK12	NM_022055.2	c.613A>T	p.Ser205Cys	missense_variant	2/2	ENST00000327876.5	NP_071338.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
KCNK12	ENST00000327876.5	c.613A>T	p.Ser205Cys	missense_variant	2/2	1	NM_022055.2	ENSP00000327611	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 37

GnomAD4 genome Cov.: 32

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Apr 07, 2023

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.092
BayesDel_addAF	Benign	-0.28	T
BayesDel_noAF	Benign	-0.63
CADD	Benign	19
DANN	Benign	0.97
DEOGEN2	Benign	0.088	T
Eigen	Benign	-0.0059
Eigen_PC	Benign	-0.12
FATHMM_MKL	Benign	0.28	N
LIST_S2	Benign	0.76	T
M_CAP	Benign	0.0058	T
MetaRNN	Benign	0.18	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Uncertain	2.5	M
MutationTaster	Benign	1.0	D
PrimateAI	Benign	0.46	T
PROVEAN	Uncertain	-3.0	D
REVEL	Benign	0.15
Sift	Benign	0.031	D
Sift4G	Benign	0.067	T
Polyphen		0.95	P
Vest4		0.033
MutPred		0.50		Loss of disorder (P = 8e-04);
MVP		0.28
MPC		1.5
ClinPred		0.87	D
GERP RS		-2.6
Varity_R		0.15
gMVP		0.91

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: chr2-47748726;