Genetic Variant KCTD7:p.Val3Val (chr7-66629073-A-G) – ACMG Classification: Likely_benign (-5 pts)

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 2P and 7B. PM2BP4_StrongBP6_ModerateBP7

The NM_153033.5(KCTD7):c.9A>G(p.Val3Val) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000729 in 1,372,366 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: 7.3e-7 ( 0 hom. )

Consequence

KCTD7
NM_153033.5 synonymous

Scores

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: 1.59

Publications

0 publications found

Variant links:

Genes affected

KCTD7 (HGNC:21957): (potassium channel tetramerization domain containing 7) This gene encodes a member of the potassium channel tetramerization domain-containing protein family. Family members are identified on a structural basis and contain an amino-terminal domain similar to the T1 domain present in the voltage-gated potassium channel. Mutations in this gene have been associated with progressive myoclonic epilepsy-3. Alternative splicing results in multiple transcript variants.[provided by RefSeq, Jan 2011]

KCTD7 Gene-Disease associations (from GenCC):

progressive myoclonic epilepsy type 3
Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE Submitted by: Genomics England PanelApp, Ambry Genetics, G2P, Labcorp Genetics (formerly Invitae), Orphanet
progressive myoclonus epilepsy
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen

KCTD7 links:

ENSG00000284461 (HGNC:):

ENSG00000284461 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -5 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.5).

BP6

Variant 7-66629073-A-G is Benign according to our data. Variant chr7-66629073-A-G is described in ClinVar as [Likely_benign]. Clinvar id is 2118466.Status of the report is criteria_provided_single_submitter, 1 stars.

BP7

Synonymous conserved (PhyloP=1.59 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KCTD7	NM_153033.5 link	c.9A>G	p.Val3Val	synonymous_variant	Exon 1 of 4	ENST00000639828.2	NP_694578.1	Q96MP8-1A0A024RDN7
KCTD7	NM_001167961.2 link	c.9A>G	p.Val3Val	synonymous_variant	Exon 1 of 5		NP_001161433.1	Q96MP8-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
KCTD7	ENST00000639828.2 link	c.9A>G	p.Val3Val	synonymous_variant	Exon 1 of 4	2	NM_153033.5	ENSP00000492240.1		Q96MP8-1
ENSG00000284461	ENST00000503687.2 link	n.9A>G		non_coding_transcript_exon_variant	Exon 1 of 13	2		ENSP00000421074.1		E9PHB8

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

7.29e-7

AC:

AN:

1372366

Hom.:

Cov.:

AF XY:

0.00000147

AC XY:

AN XY:

678434

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

28708

American (AMR)

AF:

0.00

AC:

AN:

32320

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

23674

East Asian (EAS)

AF:

0.00

AC:

AN:

32154

South Asian (SAS)

AF:

0.00

AC:

AN:

76676

European-Finnish (FIN)

AF:

0.00

AC:

AN:

48518

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5470

European-Non Finnish (NFE)

AF:

9.36e-7

AC:

AN:

1068350

Other (OTH)

AF:

0.00

AC:

AN:

56496

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Progressive myoclonic epilepsy type 3

Benign:1

Jan 29, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.50

CADD

Benign

(source)

DANN

Benign

0.41

PhyloP100

1.6

PromoterAI

-0.041

Neutral

(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.

7-66629073-A-G

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over