Genetic Variant KLHDC4:p.Gly375Ala (chr16-87709588-C-G) – ACMG Classification: Likely_benign (-4 pts)

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BP4_Strong

The NM_017566.4(KLHDC4):c.1124G>C(p.Gly375Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000093 in 1,612,660 control chromosomes in the GnomAD database, with no homozygous occurrence. 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 Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G375E) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000096 ( 0 hom. )

Consequence

KLHDC4
NM_017566.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -1.56

Variant links:

Genes affected

KLHDC4 (HGNC:25272): (kelch domain containing 4)

KLHDC4 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -4 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.051346958).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KLHDC4	NM_017566.4 link	c.1124G>C	p.Gly375Ala	missense_variant	Exon 10 of 12	ENST00000270583.10	NP_060036.2	Q8TBB5-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
KLHDC4	ENST00000270583.10 link	c.1124G>C	p.Gly375Ala	missense_variant	Exon 10 of 12	1	NM_017566.4	ENSP00000270583.4		Q8TBB5-1
KLHDC4	ENST00000567298.5 link	n.1124G>C		non_coding_transcript_exon_variant	Exon 10 of 17	5		ENSP00000457570.1		Q8TBB5-1

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152218

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000192

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000485

AC:

AN:

247450

AF XY:

0.00

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000291

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000546

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000166

GnomAD4 exome

AF:

0.00000959

AC:

AN:

1460442

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

726552

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33478

American (AMR)

AF:

0.000224

AC:

AN:

44628

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26102

East Asian (EAS)

AF:

0.00

AC:

AN:

39680

South Asian (SAS)

AF:

0.00

AC:

AN:

86192

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52494

Middle Eastern (MID)

AF:

0.000173

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00000180

AC:

AN:

1111754

Other (OTH)

AF:

0.0000166

AC:

AN:

60346

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.504

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152218

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74362

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41460

American (AMR)

AF:

0.00

AC:

AN:

15290

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.000192

AC:

AN:

5198

South Asian (SAS)

AF:

0.00

AC:

AN:

4834

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10620

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68028

Other (OTH)

AF:

0.00

AC:

AN:

2090

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.625

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00000536

Hom.:

Bravo

AF:

0.0000302

ExAC

AF:

0.0000412

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jan 24, 2025

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.1124G>C (p.G375A) alteration is located in exon 10 (coding exon 10) of the KLHDC4 gene. This alteration results from a G to C substitution at nucleotide position 1124, causing the glycine (G) at amino acid position 375 to be replaced by an alanine (A). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.066

BayesDel_addAF

Benign

-0.47

BayesDel_noAF

Benign

-0.62

CADD

Benign

0.013

(source)

DANN

Benign

0.45

DEOGEN2

Benign

0.0027

.;.;T;.

Eigen

Benign

-1.4

Eigen_PC

Benign

-1.6

FATHMM_MKL

Benign

0.061

LIST_S2

Benign

0.66

T;T;T;T

M_CAP

Benign

0.0022

MetaRNN

Benign

0.051

T;T;T;T

MetaSVM

Benign

-0.99

MutationAssessor

Benign

0.66

.;.;N;.

PhyloP100

-1.6

PrimateAI

Benign

0.21

PROVEAN

Benign

-0.090

N;N;N;N

REVEL

Benign

0.048

Sift

Benign

0.61

T;T;T;T

Sift4G

Benign

0.39

T;T;T;.

Polyphen

0.0010

B;B;B;.

Vest4

0.18

MutPred

0.52

.;.;Loss of sheet (P = 0.0025);.;

MVP

0.067

MPC

0.013

ClinPred

0.017

GERP RS

-9.3

RBP_binding_hub_radar

0.97

RBP_regulation_power_radar

2.0

Varity_R

0.031

gMVP

0.36

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

LitVar

Below is the list of publications found by LitVar for variant 16:87709588 C>G . It may be empty.

chr16-87709588-C-G

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over