Genetic Variant HDX:p.Val424Leu (chrX-84440567-C-G) – ACMG Classification: Likely_benign (-4 pts)

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BS2

The NM_001177479.2(HDX):c.1270G>C(p.Val424Leu) variant causes a missense change. The variant allele was found at a frequency of 0.0000102 in 1,180,623 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 3 hemizygotes in GnomAD. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000090 ( 0 hom., 0 hem., cov: 23)

Exomes 𝑓: 0.000010 ( 0 hom. 3 hem. )

Consequence

HDX
NM_001177479.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.69

Variant links:

Genes affected

HDX (HGNC:26411): (highly divergent homeobox) Predicted to enable DNA-binding transcription factor activity, RNA polymerase II-specific and RNA polymerase II cis-regulatory region sequence-specific DNA binding activity. Predicted to be involved in regulation of transcription by RNA polymerase II. Predicted to be located in nucleus. Predicted to be part of chromatin. [provided by Alliance of Genome Resources, Apr 2022]

HDX links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

BS2

High Hemizygotes in GnomAdExome4 at 3 gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
HDX	NM_001177479.2 link	c.1270G>C	p.Val424Leu	missense_variant	Exon 5 of 11	ENST00000373177.3	NP_001170950.1	Q7Z353-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
HDX	ENST00000373177.3 link	c.1270G>C	p.Val424Leu	missense_variant	Exon 5 of 11	1	NM_001177479.2	ENSP00000362272.2	Q7Z353-1
HDX	ENST00000297977.9 link	c.1270G>C	p.Val424Leu	missense_variant	Exon 4 of 10	1		ENSP00000297977.5	Q7Z353-1
HDX	ENST00000506585.6 link	c.1096G>C	p.Val366Leu	missense_variant	Exon 4 of 10	2		ENSP00000423670.2	Q7Z353-2
HDX	ENST00000472135.2 link	n.1124G>C		non_coding_transcript_exon_variant	Exon 2 of 2	3

Frequencies

GnomAD3 genomes

AF:

0.00000900

AC:

AN:

111088

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

33420

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000962

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000115

AC:

AN:

173651

Hom.:

AF XY:

0.0000168

AC XY:

AN XY:

59429

show subpopulations

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 SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000255

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000103

AC:

AN:

1069535

Hom.:

Cov.:

AF XY:

0.00000884

AC XY:

AN XY:

339529

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000291

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000122

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000900

AC:

AN:

111088

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

33420

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.0000962

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000113

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jul 20, 2022

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1270G>C (p.V424L) alteration is located in exon 5 (coding exon 3) of the HDX gene. This alteration results from a G to C substitution at nucleotide position 1270, causing the valine (V) at amino acid position 424 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

Uncertain

0.42

BayesDel_addAF

Uncertain

0.027

BayesDel_noAF

Benign

-0.20

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.11

T;.;T

FATHMM_MKL

Uncertain

0.88

LIST_S2

Benign

0.85

.;T;T

M_CAP

Benign

0.034

MetaRNN

Uncertain

0.54

D;D;D

MetaSVM

Benign

-0.88

MutationAssessor

Benign

1.1

L;.;L

PrimateAI

Pathogenic

0.83

PROVEAN

Benign

-1.1

N;.;.

REVEL

Benign

0.17

Sift

Uncertain

0.011

D;.;.

Sift4G

Benign

0.084

T;T;T

Polyphen

0.98

D;.;D

Vest4

0.67

MutPred

0.34

Gain of disorder (P = 0.0531);.;Gain of disorder (P = 0.0531);

MVP

0.50

MPC

0.38

ClinPred

0.69

GERP RS

5.4

Varity_R

0.39

gMVP

0.43

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over