18-26455775-C-T

Variant names:

Variant summary

Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP4_StrongBP6BS2

The NM_001142730.3(KCTD1):c.2566G>A(p.Val856Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000963 in 1,614,070 control chromosomes in the GnomAD database, including 3 homozygotes. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00083 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00098 ( 3 hom. )

Consequence

KCTD1
NM_001142730.3 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:1

Conservation

PhyloP100: 3.02

Publications

5 publications found

Variant links:

Genes affected

KCTD1 (HGNC:18249): (potassium channel tetramerization domain containing 1) This gene encodes a protein containing a BTB (Broad-complex, tramtrack and bric a brac), also known as a POZ (POxvirus and zinc finger) protein-protein interaction domain. The encoded protein negatively regulates the AP-2 family of transcription factors and the Wnt signaling pathway. A mechanism for the modulation of Wnt signaling has been proposed in which the encoded protein enhances ubiquitination and degradation of the beta-catenin protein. Mutations in this gene have been identified in Scalp-ear-nipple (SEN) syndrome. [provided by RefSeq, May 2017]

KCTD1 Gene-Disease associations (from GenCC):

scalp-ear-nipple syndrome
Inheritance: AD Classification: STRONG, SUPPORTIVE, LIMITED Submitted by: Orphanet, G2P, Labcorp Genetics (formerly Invitae)

KCTD1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -9 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.038848937).

BP6

Variant 18-26455775-C-T is Benign according to our data. Variant chr18-26455775-C-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 2048230.

BS2

High AC in GnomAd4 at 126 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001142730.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
KCTD1	NM_001142730.3	MANE Select	c.2566G>A	p.Val856Ile	missense	Exon 5 of 5	NP_001136202.1	A0A2U3U043
KCTD1	NM_001258222.3		c.766G>A	p.Val256Ile	missense	Exon 5 of 5	NP_001245151.1
KCTD1	NM_001136205.2		c.742G>A	p.Val248Ile	missense	Exon 5 of 5	NP_001129677.1	Q719H9

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
KCTD1	ENST00000580059.7	TSL:3 MANE Select	c.2566G>A	p.Val856Ile	missense	Exon 5 of 5	ENSP00000463041.2	A0A2U3U043
KCTD1	ENST00000408011.7	TSL:1	c.742G>A	p.Val248Ile	missense	Exon 5 of 5	ENSP00000384367.3	Q719H9
KCTD1	ENST00000579973.5	TSL:1	c.742G>A	p.Val248Ile	missense	Exon 6 of 6	ENSP00000464170.1	Q719H9

Frequencies

GnomAD3 genomes

AF:

0.000828

AC:

126

AN:

152126

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000725

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000393

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000621

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00126

Gnomad OTH

AF:

0.000478

GnomAD2 exomes

AF:

0.000541

AC:

136

AN:

251350

AF XY:

0.000530

show subpopulations

Gnomad AFR exome

AF:

0.000984

Gnomad AMR exome

AF:

0.000232

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.0000462

Gnomad NFE exome

AF:

0.000862

Gnomad OTH exome

AF:

0.000816

GnomAD4 exome

AF:

0.000977

AC:

1428

AN:

1461826

Hom.:

Cov.:

AF XY:

0.000927

AC XY:

674

AN XY:

727224

show subpopulations

African (AFR)

AF:

0.000568

AC:

AN:

33480

American (AMR)

AF:

0.000268

AC:

AN:

44712

Ashkenazi Jewish (ASJ)

AF:

0.0000383

AC:

AN:

26134

East Asian (EAS)

AF:

0.0000252

AC:

AN:

39698

South Asian (SAS)

AF:

0.000371

AC:

AN:

86240

European-Finnish (FIN)

AF:

0.000131

AC:

AN:

53416

Middle Eastern (MID)

AF:

0.000173

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00118

AC:

1316

AN:

1111986

Other (OTH)

AF:

0.000646

AC:

AN:

60392

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.468

Heterozygous variant carriers

139

208

278

347

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

144

192

240

<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

AF:

0.000828

AC:

126

AN:

152244

Hom.:

Cov.:

AF XY:

0.000779

AC XY:

AN XY:

74432

show subpopulations

African (AFR)

AF:

0.000723

AC:

AN:

41520

American (AMR)

AF:

0.000392

AC:

AN:

15294

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5180

South Asian (SAS)

AF:

0.000622

AC:

AN:

4824

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10602

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00126

AC:

AN:

68030

Other (OTH)

AF:

0.000473

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.503

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome 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

Alfa

AF:

0.000933

Hom.:

Bravo

AF:

0.000933

TwinsUK

AF:

0.000809

AC:

ALSPAC

AF:

0.00130

AC:

ESP6500AA

AF:

0.000681

AC:

ESP6500EA

AF:

0.00105

AC:

ExAC

AF:

0.000420

AC:

EpiCase

AF:

0.000872

EpiControl

AF:

0.000711

ClinVar

ClinVar submissions

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (1)

not specified (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.066

BayesDel_addAF

Benign

-0.33

BayesDel_noAF

Benign

-0.29

CADD

Benign

(source)

DANN

Benign

0.97

DEOGEN2

Benign

0.0098

Eigen

Benign

-0.18

Eigen_PC

Benign

0.098

FATHMM_MKL

Uncertain

0.95

LIST_S2

Uncertain

0.87

M_CAP

Benign

0.028

MetaRNN

Benign

0.039

MetaSVM

Benign

-0.82

MutationAssessor

Benign

0.34

PhyloP100

3.0

PrimateAI

Uncertain

0.63

PROVEAN

Benign

-0.21

REVEL

Benign

0.27

Sift

Benign

0.48

Sift4G

Benign

0.47

Polyphen

0.0070

Vest4

0.24

MVP

0.12

MPC

0.48

ClinPred

0.012

GERP RS

6.0

Varity_R

0.15

gMVP

0.29

Mutation Taster

=85/15

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over