rs372103637

Variant names:

• chr7-66638336-C-T
• rs372103637
• NM_153033.5:c.398C>T

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2 BP4

The NM_153033.5(KCTD7):​c.398C>T​(p.Ala133Val) variant causes a missense change. The variant allele was found at a frequency of 0.0000279 in 1,614,120 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 0.000020 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000029 (0 hom.)
• Consequence: KCTD7 NM_153033.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.52
• Publications: 0 publications found

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

ENSG00000284461 (HGNC:):

ACMG classification

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.33911517).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_153033.5. 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
	KCTD7	NM_153033.5	MANE Select	c.398C>T	p.Ala133Val	missense	Exon 3 of 4	NP_694578.1
	KCTD7	NM_001167961.2		c.398C>T	p.Ala133Val	missense	Exon 3 of 5	NP_001161433.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	KCTD7	ENST00000639828.2	TSL:2 MANE Select	c.398C>T	p.Ala133Val	missense	Exon 3 of 4	ENSP00000492240.1
	KCTD7	ENST00000443322.1	TSL:1	c.398C>T	p.Ala133Val	missense	Exon 3 of 5	ENSP00000411624.1
	ENSG00000284461	ENST00000503687.2	TSL:2	n.228C>T		non_coding_transcript_exon	Exon 2 of 13	ENSP00000421074.1

Frequencies

GnomAD3 genomes AF: 0.0000197 AC: 3 AN: 152236 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

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: 0.0000441

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 0.0000287 AC: 42 AN: 1461884 Hom.: 0 Cov.: 32 AF XY: 0.0000303 AC XY: 22 AN XY: 727242

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

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

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

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53418

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

European-Non Finnish (NFE) AF: 0.0000369 AC: 41 AN: 1112004

Other (OTH) AF: 0.0000166 AC: 1 AN: 60396

GnomAD4 genome AF: 0.0000197 AC: 3 AN: 152236 Hom.: 0 Cov.: 32 AF XY: 0.0000269 AC XY: 2 AN XY: 74370

African (AFR) AF: 0.00 AC: 0 AN: 41462

American (AMR) AF: 0.00 AC: 0 AN: 15284

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5202

South Asian (SAS) AF: 0.00 AC: 0 AN: 4832

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10624

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000441 AC: 3 AN: 68042

Other (OTH) AF: 0.00 AC: 0 AN: 2090

Alfa AF: 0.0000329 Hom.: 0

Bravo AF: 0.0000113

TwinsUK AF: 0.000270 AC: 1

ALSPAC AF: 0.00 AC: 0

ESP6500AA AF: 0.00 AC: 0

ESP6500EA AF: 0.000116 AC: 1

ExAC AF: 0.00000824 AC: 1

ClinVar

ClinVar submissions as Germline

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	Progressive myoclonic epilepsy type 3 (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.51
BayesDel_addAF	Benign	-0.081	T
BayesDel_noAF	Benign	-0.35
CADD	Uncertain	25
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.59	D
Eigen	Benign	0.15
Eigen_PC	Uncertain	0.32
FATHMM_MKL	Uncertain	0.93	D
LIST_S2	Uncertain	0.95	D
M_CAP	Benign	0.0089	T
MetaRNN	Benign	0.34	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	1.1	L
PhyloP100		5.5
PrimateAI	Uncertain	0.67	T
PROVEAN	Benign	-2.0	N
REVEL	Benign	0.13
Sift	Benign	0.086	T
Sift4G	Uncertain	0.020	D
Polyphen		0.091	B
Vest4		0.49
MVP		0.51
ClinPred		0.47	T
GERP RS		5.8
Varity_R		0.36
gMVP		0.72
Mutation Taster		=58/42	polymorphism

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

Other links and lift over

dbSNP: rs372103637; hg19: chr7-66103323;