Variant chr4-70599633-A-G details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_016519.6(AMBN):c.281A>G(p.His94Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000549 in 1,457,636 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 31)

Exomes 𝑓: 0.0000055 ( 0 hom. )

Consequence

AMBN
NM_016519.6 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.04

Variant links:

Genes affected

AMBN (HGNC:452): (ameloblastin) This gene encodes the nonamelogenin enamel matrix protein ameloblastin. The encoded protein may be important in enamel matrix formation and mineralization. This gene is located in the calcium-binding phosphoprotein gene cluster on chromosome 4. Mutations in this gene may be associated with dentinogenesis imperfect and autosomal dominant amylogenesis imperfect. [provided by RefSeq, Aug 2011]

AMBN links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
AMBN	NM_016519.6 link	c.281A>G	p.His94Arg	missense_variant	5/13	ENST00000322937.10	NP_057603.1	Q9NP70-1Q546D7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
AMBN	ENST00000322937.10 link	c.281A>G	p.His94Arg	missense_variant	5/13	1	NM_016519.6	ENSP00000313809.6		Q9NP70-1
AMBN	ENST00000449493.2 link	c.281A>G	p.His94Arg	missense_variant	5/13	5		ENSP00000391234.2		Q9NP70-2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000401

AC:

AN:

249466

Hom.:

AF XY:

0.00000742

AC XY:

AN XY:

134804

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:

0.00000885

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000549

AC:

AN:

1457636

Hom.:

Cov.:

AF XY:

0.00000551

AC XY:

AN XY:

725318

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

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:

0.00000721

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Aug 24, 2017

In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of missense changes on protein structure and function do not agree on the potential impact of this missense change (SIFT: "Tolerated"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Class C0"). This variant has not been reported in the literature in individuals with AMBN-related disease. This variant is not present in population databases (ExAC no frequency). This sequence change replaces histidine with arginine at codon 94 of the AMBN protein (p.His94Arg). The histidine residue is highly conserved and there is a small physicochemical difference between histidine and arginine. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.18

BayesDel_addAF

Benign

-0.082

BayesDel_noAF

Benign

-0.36

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.24

T;.;.

Eigen

Uncertain

0.63

Eigen_PC

Uncertain

0.60

FATHMM_MKL

Uncertain

0.90

LIST_S2

Benign

0.63

T;T;T

M_CAP

Benign

0.0089

MetaRNN

Uncertain

0.56

D;D;D

MetaSVM

Benign

-0.56

MutationAssessor

Benign

1.5

L;.;L

PrimateAI

Uncertain

0.65

PROVEAN

Uncertain

-3.9

D;.;D

REVEL

Uncertain

0.34

Sift

Uncertain

0.021

D;.;D

Sift4G

Benign

0.23

T;T;T

Polyphen

1.0

D;.;.

Vest4

0.56

MutPred

0.62

Gain of glycosylation at Y99 (P = 2e-04);Gain of glycosylation at Y99 (P = 2e-04);Gain of glycosylation at Y99 (P = 2e-04);

MVP

0.53

MPC

0.37

ClinPred

0.92

GERP RS

5.7

Varity_R

0.36

gMVP

0.53

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. 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