Genetic Variant NM_002246.3:c.99C>G (chr2-26692974-C-G) – ACMG Classification: Benign (-15 pts)

Variant summary

Our verdict is Benign. The variant received -15 ACMG points: 0P and 15B. BP4_ModerateBP6_Very_StrongBP7BS2

The NM_002246.3(KCNK3):c.99C>G(p.Pro33Pro) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000113 in 1,417,680 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 Likely benign (★★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.000011 ( 0 hom. )

Consequence

KCNK3
NM_002246.3 synonymous

Scores

Clinical Significance

Likely benign criteria provided, multiple submitters, no conflicts B:2

Conservation

PhyloP100: -4.48

Publications

0 publications found

Variant links:

Genes affected

KCNK3 (HGNC:6278): (potassium two pore domain channel subfamily K member 3) This gene encodes a member of the superfamily of potassium channel proteins that contain two pore-forming P domains. The encoded protein is an outwardly rectifying channel that is sensitive to changes in extracellular pH and is inhibited by extracellular acidification. Also referred to as an acid-sensitive potassium channel, it is activated by the anesthetics halothane and isoflurane. Although three transcripts are detected in northern blots, there is currently no sequence available to confirm transcript variants for this gene. [provided by RefSeq, Aug 2008]

KCNK3 Gene-Disease associations (from GenCC):

pulmonary arterial hypertension
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
pulmonary hypertension, primary, 4
Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
heritable pulmonary arterial hypertension
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

KCNK3 links:

ENSG00000295291 (HGNC:):

ENSG00000295291 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -15 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.46).

BP6

Variant 2-26692974-C-G is Benign according to our data. Variant chr2-26692974-C-G is described in ClinVar as Likely_benign. ClinVar VariationId is 1100377.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=-4.48 with no splicing effect.

BS2

High AC in GnomAdExome4 at 16 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_002246.3. 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
	KCNK3	NM_002246.3	MANE Select	c.99C>G	p.Pro33Pro	synonymous	Exon 1 of 2	NP_002237.1	O14649

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	KCNK3	ENST00000302909.4	TSL:1 MANE Select	c.99C>G	p.Pro33Pro	synonymous	Exon 1 of 2	ENSP00000306275.3	O14649
	ENSG00000295291	ENST00000729046.1		n.64G>C		non_coding_transcript_exon	Exon 1 of 2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.0000175

AC:

AN:

171182

AF XY:

0.0000105

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000113

AC:

AN:

1417680

Hom.:

Cov.:

AF XY:

0.0000114

AC XY:

AN XY:

702592

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

32190

American (AMR)

AF:

0.00

AC:

AN:

39382

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25520

East Asian (EAS)

AF:

0.0000809

AC:

AN:

37078

South Asian (SAS)

AF:

0.000122

AC:

AN:

81928

European-Finnish (FIN)

AF:

0.00

AC:

AN:

43530

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4954

European-Non Finnish (NFE)

AF:

9.14e-7

AC:

AN:

1094318

Other (OTH)

AF:

0.0000340

AC:

AN:

58780

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.481

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<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

Cov.:

ClinVar

ClinVar submissions as Germline

Significance:Likely benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

Pulmonary hypertension, primary, 4 (2)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.46

CADD

Benign

3.6

(source)

DANN

Benign

0.62

PhyloP100

-4.5

PromoterAI

-0.0076

Neutral

(source)

Mutation Taster

=100/0

polymorphism

(source)

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over