Genetic Variant KHDC4:p.Pro434Leu (chr1-155917638-G-A) – ACMG Classification: Likely_benign (-4 pts)

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BS2

The NM_014949.4(KHDC4):c.1301C>T(p.Pro434Leu) variant causes a missense change. The variant allele was found at a frequency of 0.0000151 in 1,590,532 control chromosomes in the GnomAD database, with no homozygous occurrence. 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. P434S) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 31)

Exomes 𝑓: 0.000015 ( 0 hom. )

Consequence

KHDC4
NM_014949.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.17

Variant links:

Genes affected

KHDC4 (HGNC:29145): (KH domain containing 4, pre-mRNA splicing factor) Enables RNA binding activity. Involved in mRNA splice site selection. Located in cytoplasm and nucleoplasm. Colocalizes with spliceosomal complex. [provided by Alliance of Genome Resources, Apr 2022]

KHDC4 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

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

BS2

High AC in GnomAdExome4 at 21 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KHDC4	NM_014949.4 link	c.1301C>T	p.Pro434Leu	missense_variant	Exon 11 of 14	ENST00000368321.8	NP_055764.2	Q7Z7F0-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
KHDC4	ENST00000368321.8 link	c.1301C>T	p.Pro434Leu	missense_variant	Exon 11 of 14	1	NM_014949.4	ENSP00000357304.3	Q7Z7F0-1
KHDC4	ENST00000368320.7 link	c.1301C>T	p.Pro434Leu	missense_variant	Exon 11 of 13	1		ENSP00000357303.3	Q7Z7F0-2
KHDC4	ENST00000478002.5 link	n.540C>T		non_coding_transcript_exon_variant	Exon 5 of 8	5
KHDC4	ENST00000466520.1 link	n.-64C>T		upstream_gene_variant		3

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152056

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000483

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.00

AC:

AN:

207110

AF XY:

0.00

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:

0.0000146

AC:

AN:

1438476

Hom.:

Cov.:

AF XY:

0.0000168

AC XY:

AN XY:

714662

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

32638

American (AMR)

AF:

0.00

AC:

AN:

40376

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25236

East Asian (EAS)

AF:

0.00

AC:

AN:

39004

South Asian (SAS)

AF:

0.00

AC:

AN:

83894

European-Finnish (FIN)

AF:

0.00

AC:

AN:

51444

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4142

European-Non Finnish (NFE)

AF:

0.0000181

AC:

AN:

1102608

Other (OTH)

AF:

0.0000169

AC:

AN:

59134

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.463

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.0000197

AC:

AN:

152056

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74266

show subpopulations

African (AFR)

AF:

0.0000483

AC:

AN:

41390

American (AMR)

AF:

0.00

AC:

AN:

15262

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5192

South Asian (SAS)

AF:

0.00

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10578

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68014

Other (OTH)

AF:

0.00

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.642

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.0000264

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Oct 06, 2024

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.1301C>T (p.P434L) alteration is located in exon 11 (coding exon 11) of the KIAA0907 gene. This alteration results from a C to T substitution at nucleotide position 1301, causing the proline (P) at amino acid position 434 to be replaced by a leucine (L). 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

0.12

BayesDel_addAF

Uncertain

0.061

BayesDel_noAF

Benign

-0.15

CADD

Pathogenic

(source)

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.26

T;.

Eigen

Uncertain

0.54

Eigen_PC

Uncertain

0.63

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.91

D;D

M_CAP

Benign

0.013

MetaRNN

Uncertain

0.59

D;D

MetaSVM

Benign

-1.1

PhyloP100

7.2

PrimateAI

Uncertain

0.76

PROVEAN

Uncertain

-3.8

D;D

REVEL

Benign

0.21

Sift

Uncertain

0.0030

D;D

Sift4G

Uncertain

0.0070

D;D

Polyphen

0.98

D;D

Vest4

0.76

MutPred

0.20

Loss of phosphorylation at T437 (P = 0.0743);Loss of phosphorylation at T437 (P = 0.0743);

MVP

0.18

MPC

1.1

ClinPred

0.98

GERP RS

5.9

Varity_R

0.33

gMVP

0.25

Mutation Taster

=77/23

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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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1-155917638-G-A

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

Other links and lift over