NM_000051.4:c.3449G>C

Variant names:

Variant summary

Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP4_StrongBP6BS2

The NM_000051.4(ATM):c.3449G>C(p.Arg1150Thr) variant causes a missense change. The variant allele was found at a frequency of 0.00008 in 1,613,476 control chromosomes in the GnomAD database, including 3 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R1150K) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000086 ( 3 hom. )

Consequence

ATM
NM_000051.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:6B:5

Conservation

PhyloP100: 5.93

Publications

7 publications found

Variant links:

Genes affected

ATM (HGNC:795): (ATM serine/threonine kinase) The protein encoded by this gene belongs to the PI3/PI4-kinase family. This protein is an important cell cycle checkpoint kinase that phosphorylates; thus, it functions as a regulator of a wide variety of downstream proteins, including tumor suppressor proteins p53 and BRCA1, checkpoint kinase CHK2, checkpoint proteins RAD17 and RAD9, and DNA repair protein NBS1. This protein and the closely related kinase ATR are thought to be master controllers of cell cycle checkpoint signaling pathways that are required for cell response to DNA damage and for genome stability. Mutations in this gene are associated with ataxia telangiectasia, an autosomal recessive disorder. [provided by RefSeq, Aug 2010]

ATM Gene-Disease associations (from GenCC):

hereditary breast carcinoma
Inheritance: AD Classification: DEFINITIVE Submitted by: Ambry Genetics, ClinGen
ataxia telangiectasia
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Ambry Genetics, Genomics England PanelApp, Labcorp Genetics (formerly Invitae), G2P, ClinGen, Laboratory for Molecular Medicine, Orphanet
hereditary nonpolyposis colon cancer
Inheritance: AD Classification: MODERATE, LIMITED Submitted by: ClinGen, Ambry Genetics
prostate cancer
Inheritance: AD Classification: MODERATE Submitted by: Ambry Genetics
sarcoma
Inheritance: AD Classification: MODERATE Submitted by: Genomics England PanelApp
familial ovarian cancer
Inheritance: AD Classification: LIMITED Submitted by: ClinGen
gastric carcinoma
Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics

ATM links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -9 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.055843115).

BP6

Variant 11-108281041-G-C is Benign according to our data. Variant chr11-108281041-G-C is described in CliVar as Conflicting_classifications_of_pathogenicity. Clinvar id is 127372. Variant chr11-108281041-G-C is described in CliVar as Conflicting_classifications_of_pathogenicity. Clinvar id is 127372. Variant chr11-108281041-G-C is described in CliVar as Conflicting_classifications_of_pathogenicity. Clinvar id is 127372. Variant chr11-108281041-G-C is described in CliVar as Conflicting_classifications_of_pathogenicity. Clinvar id is 127372. Variant chr11-108281041-G-C is described in CliVar as Conflicting_classifications_of_pathogenicity. Clinvar id is 127372. Variant chr11-108281041-G-C is described in CliVar as Conflicting_classifications_of_pathogenicity. Clinvar id is 127372. Variant chr11-108281041-G-C is described in CliVar as Conflicting_classifications_of_pathogenicity. Clinvar id is 127372. Variant chr11-108281041-G-C is described in CliVar as Conflicting_classifications_of_pathogenicity. Clinvar id is 127372. Variant chr11-108281041-G-C is described in CliVar as Conflicting_classifications_of_pathogenicity. Clinvar id is 127372. Variant chr11-108281041-G-C is described in CliVar as Conflicting_classifications_of_pathogenicity. Clinvar id is 127372. Variant chr11-108281041-G-C is described in CliVar as Conflicting_classifications_of_pathogenicity. Clinvar id is 127372.

BS2

High Homozygotes in GnomAdExome4 at 3 AD,AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ATM	NM_000051.4 link	c.3449G>C	p.Arg1150Thr	missense_variant	Exon 24 of 63	ENST00000675843.1	NP_000042.3	Q13315A0A024R3C7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ATM	ENST00000675843.1 link	c.3449G>C	p.Arg1150Thr	missense_variant	Exon 24 of 63		NM_000051.4	ENSP00000501606.1		Q13315

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

151986

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000621

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000183

AC:

AN:

251216

AF XY:

0.000258

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 FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.0000862

AC:

126

AN:

1461372

Hom.:

Cov.:

AF XY:

0.000128

AC XY:

AN XY:

726986

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33462

American (AMR)

AF:

0.00

AC:

AN:

44704

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26122

East Asian (EAS)

AF:

0.00

AC:

AN:

39646

South Asian (SAS)

AF:

0.00138

AC:

119

AN:

86176

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53408

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5764

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111712

Other (OTH)

AF:

0.000116

AC:

AN:

60378

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.478

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

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:

0.0000197

AC:

AN:

152104

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74344

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41470

American (AMR)

AF:

0.00

AC:

AN:

15292

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5172

South Asian (SAS)

AF:

0.000622

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10562

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68000

Other (OTH)

AF:

0.00

AC:

AN:

2108

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.592

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.0000434

Hom.:

Bravo

AF:

0.0000113

ExAC

AF:

0.000189

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:6Benign:5

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Hereditary cancer-predisposing syndrome

Benign:3

Apr 20, 2021

Ambry Genetics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Dec 05, 2021

Sema4, Sema4

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:curation

- -

Oct 20, 2020

Color Diagnostics, LLC DBA Color Health

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not provided

Uncertain:2

Apr 08, 2021

GeneDx

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Observed in individuals with breast or ovarian cancer (Singh 2018); This variant is associated with the following publications: (PMID: 29470806, 31919090) -

Mar 10, 2020

Mayo Clinic Laboratories, Mayo Clinic

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not specified

Uncertain:1Benign:1

May 27, 2022

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Variant summary: ATM c.3449G>C (p.Arg1150Thr) results in a non-conservative amino acid change in the encoded protein sequence. Four of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 0.00018 in 251216 control chromosomes, predominantly at a frequency of 0.0015 within the South Asian subpopulation in the gnomAD database, including 1 homozygote. The observed variant frequency within South Asian control individuals in the gnomAD database is approximately 1.5 fold of the estimated maximal expected allele frequency for a pathogenic variant in ATM (0.001) causing an ATM-related Cancer phenotype (0.001), strongly suggesting that the variant is a benign polymorphism found primarily in populations of South Asian origin. c.3449G>C has been reported in the literature as a VUS in settings of multigene panel testing among individuals with a variety of cancers to include breast cancer (example, Singh_2018). These report(s) do not provide unequivocal conclusions about association of the variant with Ataxia Telangiectasia/ATM-related cancers. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. Seven clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014 without evidence for independent evaluation. Multiple laboratories reported the variant with conflicting assessments (Likely benign, n=2; VUS, n=5). Based on the evidence outlined above, the variant was classified as likely benign. -

Mar 02, 2018

Genetic Services Laboratory, University of Chicago

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Ataxia-telangiectasia syndrome

Uncertain:1Benign:1

Dec 12, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Sep 16, 2020

Natera, Inc.

Significance:Uncertain significance

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

ATM-related cancer predisposition

Uncertain:1

Aug 03, 2021

Department of Pathology and Laboratory Medicine, Sinai Health System

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Familial cancer of breast

Uncertain:1

Neuberg Centre For Genomic Medicine, NCGM

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The missense variant in c.3449G>C (p.Arg1150Thr) in ATM gene has not been reported previously as a pathogenic variant nor as a benign variant, to our knowledge. The p.Arg1150Thr variant is is reported with the allele frequency of 0.01831% in gnomAD and is novel (not in any individuals) in 1000 Genomes. This variant has been reported to the ClinVar database as conflicting - uncertain significance/ likely benign. The amino acid Arg at position 1150 is changed to a Thr changing protein sequence and it might alter its composition and physico-chemical properties. The variant is predicted to be damaging by both SIFT and PolyPhen2. The residue is conserved across species. The amino acid change p.Arg1150Thr in ATM is predicted as conserved by GERP++ and PhyloP across 100 vertebrates. For these reasons, this variant has been classified as Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.46

BayesDel_addAF

Benign

-0.080

BayesDel_noAF

Uncertain

0.080

CADD

Uncertain

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.26

.;T;T

Eigen

Pathogenic

0.84

Eigen_PC

Pathogenic

0.85

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.87

D;D;.

M_CAP

Uncertain

0.13

MetaRNN

Benign

0.056

T;T;T

MetaSVM

Uncertain

-0.012

MutationAssessor

Uncertain

2.8

.;M;M

PhyloP100

5.9

PrimateAI

Benign

0.45

PROVEAN

Uncertain

-3.5

D;D;D

REVEL

Uncertain

0.47

Sift

Uncertain

0.0050

D;D;D

Sift4G

Uncertain

0.027

D;D;D

Polyphen

0.99

.;D;D

Vest4

0.67, 0.64

MutPred

0.40

Loss of methylation at K1151 (P = 0.0483);Loss of methylation at K1151 (P = 0.0483);Loss of methylation at K1151 (P = 0.0483);

MVP

0.96

MPC

0.45

ClinPred

0.34

GERP RS

6.1

Varity_R

0.77

gMVP

0.78

Mutation Taster

=65/35

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.040

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

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over