rs749274421

Variant names:

• chr11-65593533-C-A
• rs749274421
• NM_033347.2:c.661G>T

Your query was ambiguous. Multiple possible variants found:

• chr11-65593533-C-A
• chr11-65593533-C-G
• chr11-65593533-C-T

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_033347.2(KCNK7):​c.661G>T​(p.Gly221Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000685 in 1,459,704 control chromosomes in the GnomAD database, with no homozygous occurrence. 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. G221R) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: KCNK7 NM_033347.2 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.75
• Publications: 0 publications found

Genes affected

KCNK7 (HGNC:6282): (potassium two pore domain channel subfamily K member 7) This gene encodes a member 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. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_033347.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	KCNK7	NM_033347.2	MANE Select	c.661G>T	p.Gly221Cys	missense	Exon 2 of 3	NP_203133.1	Q9Y2U2-1
	KCNK7	NM_005714.2		c.661G>T	p.Gly221Cys	missense	Exon 2 of 2	NP_005705.1	Q9Y2U2-3
	KCNK7	NM_033348.2		c.661G>T	p.Gly221Cys	missense	Exon 2 of 4	NP_203134.1	Q9Y2U2-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	KCNK7	ENST00000340313.5	TSL:1 MANE Select	c.661G>T	p.Gly221Cys	missense	Exon 2 of 3	ENSP00000344820.5	Q9Y2U2-1
	KCNK7	ENST00000394216.6	TSL:1	c.661G>T	p.Gly221Cys	missense	Exon 2 of 2	ENSP00000377764.2	Q9Y2U2-3
	KCNK7	ENST00000342202.8	TSL:1	c.661G>T	p.Gly221Cys	missense	Exon 2 of 3	ENSP00000343923.4	Q9Y2U2-2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 6.85e-7 AC: 1 AN: 1459704 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 726228

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44722

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26132

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86256

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 51296

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 8.99e-7 AC: 1 AN: 1111972

Other (OTH) AF: 0.00 AC: 0 AN: 60378

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.14
BayesDel_addAF	Benign	-0.15	T
BayesDel_noAF	Benign	-0.46
CADD	Benign	16
DANN	Uncertain	0.99
DEOGEN2	Pathogenic	0.89	D
Eigen	Benign	-0.26
Eigen_PC	Benign	-0.53
FATHMM_MKL	Benign	0.27	N
LIST_S2	Benign	0.69	T
M_CAP	Benign	0.045	D
MetaRNN	Uncertain	0.46	T
MetaSVM	Benign	-0.87	T
MutationAssessor	Uncertain	2.2	M
PhyloP100		1.8
PrimateAI	Benign	0.26	T
PROVEAN	Pathogenic	-6.8	D
REVEL	Benign	0.10
Sift	Uncertain	0.0010	D
Sift4G	Uncertain	0.0060	D
Polyphen		1.0	D
Vest4		0.43
MutPred		0.47		Loss of disorder (P = 0.0048)
MVP		0.56
MPC		0.17
ClinPred		0.89	D
GERP RS		-0.59
PromoterAI		-0.0038	Neutral
Varity_R		0.47
gMVP		0.57
Mutation Taster		=93/7	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		Details are displayed if max score is > 0.2

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

Other links and lift over

dbSNP: rs749274421; hg19: chr11-65361004;