dbSNP rs7660807: AMTN:p.Asn45Thr (chr4-70522834-A-C) – 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_212557.4(AMTN):c.134A>C(p.Asn45Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000205 in 1,461,544 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000021 ( 0 hom. )

Consequence

AMTN
NM_212557.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -0.248

Publications

18 publications found

Variant links:

Genes affected

AMTN (HGNC:33188): (amelotin) The mineralized portions of teeth, the dentin and enamel, are formed by mesenchyme-derived odontoblasts and epithelium-derived ameloblasts, respectively. As ameloblasts differentiate, they deposit specific proteins necessary for enamel formation, including amelogenin (AMELX; MIM 300391), enamelin (ENAM; MIM 606585), and ameloblastin (AMBN; MIM 601259), in the organic enamel matrix. Amelotin is specifically expressed in maturation-stage ameloblasts (Iwasaki et al., 2005 [PubMed 16304441]).[supplied by OMIM, Mar 2008]

AMTN Gene-Disease associations (from GenCC):

amelogenesis imperfecta, type 3A
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
amelogenesis imperfecta type 3B
Inheritance: AD Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae)

AMTN links:

Genome browser will be placed here

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=0.121216774).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
AMTN	NM_212557.4 link	c.134A>C	p.Asn45Thr	missense_variant	Exon 3 of 9	ENST00000339336.9	NP_997722.1	Q6UX39-1F1T0L8
AMTN	NM_001286731.2 link	c.131A>C	p.Asn44Thr	missense_variant	Exon 3 of 9		NP_001273660.1	Q6UX39-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
AMTN	ENST00000339336.9 link	c.134A>C	p.Asn45Thr	missense_variant	Exon 3 of 9	1	NM_212557.4	ENSP00000341013.4		Q6UX39-1
AMTN	ENST00000504451.1 link	c.131A>C	p.Asn44Thr	missense_variant	Exon 3 of 9	1		ENSP00000422452.1		Q6UX39-2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000205

AC:

AN:

1461544

Hom.:

Cov.:

AF XY:

0.00000413

AC XY:

AN XY:

727066

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33478

American (AMR)

AF:

0.00

AC:

AN:

44722

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26122

East Asian (EAS)

AF:

0.00

AC:

AN:

39694

South Asian (SAS)

AF:

0.00

AC:

AN:

86256

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53404

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5762

European-Non Finnish (NFE)

AF:

0.00000270

AC:

AN:

1111728

Other (OTH)

AF:

0.00

AC:

AN:

60378

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.458

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

2089

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.093

BayesDel_addAF

Benign

-0.22

BayesDel_noAF

Benign

-0.55

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.013

T;.

Eigen

Benign

-0.46

Eigen_PC

Benign

-0.33

FATHMM_MKL

Benign

0.46

LIST_S2

Benign

0.54

T;T

M_CAP

Benign

0.0051

MetaRNN

Benign

0.12

T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.8

L;.

PhyloP100

-0.25

PrimateAI

Benign

0.28

PROVEAN

Uncertain

-2.4

N;N

REVEL

Benign

0.038

Sift

Benign

0.29

T;T

Sift4G

Benign

0.12

T;T

Polyphen

0.017

B;B

Vest4

0.11

MutPred

0.15

Gain of relative solvent accessibility (P = 0.0479);.;

MVP

0.34

MPC

0.071

ClinPred

0.15

GERP RS

1.4

Varity_R

0.098

gMVP

0.21

Mutation Taster

=99/1

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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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over