X-11298125-A-G

Position:

chrX-11298125-A-G

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 2P and 6B. PM1BP4_ModerateBS2

The ENST00000380712.7(AMELX):c.125A>G(p.Asn42Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000124 in 1,210,190 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 3 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. 12/16 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000027 ( 0 hom., 1 hem., cov: 23)

Exomes 𝑓: 0.000011 ( 0 hom. 2 hem. )

Consequence

AMELX
ENST00000380712.7 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.160

Variant links:

Genes affected

AMELX (HGNC:461): (amelogenin X-linked) This gene encodes a member of the amelogenin family of extracellular matrix proteins. Amelogenins are involved in biomineralization during tooth enamel development. Mutations in this gene cause X-linked amelogenesis imperfecta. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Jul 2008]

AMELX links:

ARHGAP6 (HGNC:676): (Rho GTPase activating protein 6) This gene encodes a member of the rhoGAP family of proteins which play a role in the regulation of actin polymerization at the plasma membrane during several cellular processes. This protein is thought to have two independent functions, one as a GTPase-activating protein with specificity for RhoA, and another as a cytoskeletal protein that promotes actin remodeling. Multiple alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

ARHGAP6 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

PM1

In a chain Amelogenin, X isoform (size 174) in uniprot entity AMELX_HUMAN there are 5 pathogenic changes around while only 2 benign (71%) in ENST00000380712.7

BP4

Computational evidence support a benign effect (MetaRNN=0.07571903).

BS2

High Hemizygotes in GnomAdExome4 at 2 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
AMELX	NM_001142.2 linkuse as main transcript	c.103-111A>G		intron_variant		ENST00000380714.7
ARHGAP6	NM_013427.3 linkuse as main transcript	c.589-43418T>C		intron_variant		ENST00000337414.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ARHGAP6	ENST00000337414.9 linkuse as main transcript	c.589-43418T>C		intron_variant		1	NM_013427.3	P2	O43182-1
AMELX	ENST00000380714.7 linkuse as main transcript	c.103-111A>G		intron_variant		1	NM_001142.2	P1	Q99217-1

Frequencies

GnomAD3 genomes

AF:

0.0000267

AC:

AN:

112476

Hom.:

Cov.:

AF XY:

0.0000289

AC XY:

AN XY:

34626

show subpopulations

Gnomad AFR

AF:

0.0000970

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000164

AC:

AN:

183483

Hom.:

AF XY:

0.0000147

AC XY:

AN XY:

67933

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000144

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000221

GnomAD4 exome

AF:

0.0000109

AC:

AN:

1097714

Hom.:

Cov.:

AF XY:

0.00000551

AC XY:

AN XY:

363112

show subpopulations

Gnomad4 AFR exome

AF:

0.000152

Gnomad4 AMR exome

AF:

0.0000284

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000132

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000119

Gnomad4 OTH exome

AF:

0.0000434

GnomAD4 genome

AF:

0.0000267

AC:

AN:

112476

Hom.:

Cov.:

AF XY:

0.0000289

AC XY:

AN XY:

34626

show subpopulations

Gnomad4 AFR

AF:

0.0000970

Gnomad4 AMR

AF:

0.00

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:

0.0000340

ExAC

AF:

0.00000824

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Apr 07, 2022

The c.125A>G (p.N42S) alteration is located in exon 4 (coding exon 3) of the AMELX gene. This alteration results from a A to G substitution at nucleotide position 125, causing the asparagine (N) at amino acid position 42 to be replaced by a serine (S). 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

BayesDel_addAF

Benign

-0.65

BayesDel_noAF

Benign

-0.91

CADD

Benign

1.8

DANN

Benign

0.62

FATHMM_MKL

Benign

0.012

LIST_S2

Benign

0.39

M_CAP

Benign

0.0070

MetaRNN

Benign

0.076

MetaSVM

Benign

-1.0

MutationTaster

Benign

1.0

N;N;N;N;N;N;N;N

PrimateAI

Benign

0.38

PROVEAN

Benign

-0.25

REVEL

Benign

0.033

Sift

Benign

0.17

Sift4G

Benign

1.0

Polyphen

0.0

Vest4

0.16

MutPred

0.37

Gain of disorder (P = 0.0704);

MVP

0.97

MPC

0.18

ClinPred

0.034

GERP RS

-8.0

gMVP

0.12

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.030

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