Genetic Variant AMTN:p.Thr4Met (chr4-70518788-C-T) – ACMG Classification: Benign (-10 pts)

Variant summary

Our verdict is Benign. The variant received -10 ACMG points: 0P and 10B. BP4_StrongBP6_ModerateBS2

The NM_212557.4(AMTN):c.11C>T(p.Thr4Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000018 in 1,606,712 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000019 ( 0 hom. )

Consequence

AMTN
NM_212557.4 missense

Scores

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: -1.89

Publications

0 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: Benign. The variant received -10 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.029368788).

BP6

Variant 4-70518788-C-T is Benign according to our data. Variant chr4-70518788-C-T is described in ClinVar as Likely_benign. ClinVar VariationId is 2357282.Status of the report is criteria_provided_single_submitter, 1 stars.

BS2

High AC in GnomAdExome4 at 27 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_212557.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	AMTN	NM_212557.4	MANE Select	c.11C>T	p.Thr4Met	missense	Exon 2 of 9	NP_997722.1	F1T0L8
	AMTN	NM_001286731.2		c.11C>T	p.Thr4Met	missense	Exon 2 of 9	NP_001273660.1	Q6UX39-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	AMTN	ENST00000339336.9	TSL:1 MANE Select	c.11C>T	p.Thr4Met	missense	Exon 2 of 9	ENSP00000341013.4	Q6UX39-1
	AMTN	ENST00000504451.1	TSL:1	c.11C>T	p.Thr4Met	missense	Exon 2 of 9	ENSP00000422452.1	Q6UX39-2

Frequencies

GnomAD3 genomes

AF:

0.0000132

AC:

AN:

152032

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000484

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

GnomAD2 exomes

AF:

0.0000359

AC:

AN:

250886

AF XY:

0.0000369

show subpopulations

Gnomad AFR exome

AF:

0.0000616

Gnomad AMR exome

AF:

0.0000290

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000164

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000176

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000186

AC:

AN:

1454680

Hom.:

Cov.:

AF XY:

0.0000235

AC XY:

AN XY:

724168

show subpopulations

African (AFR)

AF:

0.0000900

AC:

AN:

33348

American (AMR)

AF:

0.0000224

AC:

AN:

44680

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26088

East Asian (EAS)

AF:

0.0000505

AC:

AN:

39620

South Asian (SAS)

AF:

0.0000348

AC:

AN:

86088

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53370

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5742

European-Non Finnish (NFE)

AF:

0.0000145

AC:

AN:

1105590

Other (OTH)

AF:

0.0000332

AC:

AN:

60154

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.412

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

AF:

0.0000132

AC:

AN:

152032

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74270

show subpopulations

African (AFR)

AF:

0.0000484

AC:

AN:

41360

American (AMR)

AF:

0.00

AC:

AN:

15260

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5190

South Asian (SAS)

AF:

0.00

AC:

AN:

4822

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10598

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68014

Other (OTH)

AF:

0.00

AC:

AN:

2090

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.600

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.0000227

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000247

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

ClinVar submissions

Significance:Likely benign

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

not specified (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

-0.55

BayesDel_noAF

Benign

-0.77

CADD

Benign

0.088

(source)

DANN

Benign

0.76

DEOGEN2

Benign

0.00076

Eigen

Benign

-2.0

Eigen_PC

Benign

-2.0

FATHMM_MKL

Benign

0.011

LIST_S2

Benign

0.45

M_CAP

Benign

0.0019

MetaRNN

Benign

0.029

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.55

PhyloP100

-1.9

PrimateAI

Benign

0.22

PROVEAN

Benign

0.67

REVEL

Benign

0.055

Sift

Benign

0.63

Sift4G

Benign

0.31

Polyphen

0.0050

Vest4

0.29

MVP

0.13

MPC

0.072

ClinPred

0.047

GERP RS

-6.8

PromoterAI

-0.024

Neutral

(source)

Varity_R

0.022

gMVP

0.15

Mutation Taster

=99/1

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.16

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over