Genetic Variant HMGXB4:p.Asn53Asp (chr22-35263203-A-G) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001003681.3(HMGXB4):c.157A>G(p.Asn53Asp) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000274 in 1,460,750 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: not found (cov: 32)

Exomes 𝑓: 0.0000027 ( 0 hom. )

Consequence

HMGXB4
NM_001003681.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 8.40

Publications

0 publications found

Variant links:

Genes affected

HMGXB4 (HGNC:5003): (HMG-box containing 4) High mobility group (HMG) proteins are nonhistone chromosomal proteins. See HMG2 (MIM 163906) for additional information on HMG proteins.[supplied by OMIM, Nov 2010]

HMGXB4 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.15398094).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
HMGXB4	NM_001003681.3 link	c.157A>G	p.Asn53Asp	missense_variant	Exon 3 of 11	ENST00000216106.6	NP_001003681.1	Q9UGU5Q7Z641

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
HMGXB4	ENST00000216106.6 link	c.157A>G	p.Asn53Asp	missense_variant	Exon 3 of 11	5	NM_001003681.3	ENSP00000216106.5		Q9UGU5

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000274

AC:

AN:

1460750

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726694

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33336

American (AMR)

AF:

0.00

AC:

AN:

44352

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26128

East Asian (EAS)

AF:

0.00

AC:

AN:

39688

South Asian (SAS)

AF:

0.00

AC:

AN:

86148

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53404

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5762

European-Non Finnish (NFE)

AF:

0.00000360

AC:

AN:

1111594

Other (OTH)

AF:

0.00

AC:

AN:

60338

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.450

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

Alfa

AF:

0.000224

Hom.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jul 14, 2023

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.157A>G (p.N53D) alteration is located in exon 3 (coding exon 2) of the HMGXB4 gene. This alteration results from a A to G substitution at nucleotide position 157, causing the asparagine (N) at amino acid position 53 to be replaced by an aspartic acid (D). 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

0.13

BayesDel_addAF

Benign

-0.28

BayesDel_noAF

Benign

-0.64

CADD

Uncertain

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.0095

Eigen

Benign

-0.12

Eigen_PC

Benign

0.085

FATHMM_MKL

Pathogenic

1.0

LIST_S2

Uncertain

0.88

M_CAP

Benign

0.0082

MetaRNN

Benign

0.15

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.34

PhyloP100

8.4

PrimateAI

Uncertain

0.50

PROVEAN

Benign

-0.59

REVEL

Benign

0.13

Sift

Benign

0.046

Sift4G

Benign

0.094

Polyphen

0.094

Vest4

0.24

MutPred

0.13

Gain of ubiquitination at K58 (P = 0.0355);

MVP

0.34

MPC

0.12

ClinPred

0.85

GERP RS

4.7

RBP_binding_hub_radar

0.97

RBP_regulation_power_radar

2.0

Varity_R

0.13

gMVP

0.024

Mutation Taster

=270/30

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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chr22-35263203-A-G

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over