rs587781511

Variant names:

Variant summary

Our verdict is Pathogenic. Variant got 10 ACMG points: 10P and 0B. PP3_ModeratePP5_Very_Strong

The NM_000051.4(ATM):c.967A>G(p.Ile323Val) variant causes a missense change. The variant allele was found at a frequency of 0.00000496 in 1,613,390 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Likely pathogenic (★★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000048 ( 0 hom. )

Consequence

ATM
NM_000051.4 missense

Scores

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:8

Conservation

PhyloP100: 5.75

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 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 10 ACMG points.

PP3

Splicing scoreres supports a deletorius effect: Scorers claiming Pathogenic: max_spliceai. No scorers claiming Uncertain. No scorers claiming Benign.

PP5

Variant 11-108247029-A-G is Pathogenic according to our data. Variant chr11-108247029-A-G is described in ClinVar as [Likely_pathogenic]. Clinvar id is 141123.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr11-108247029-A-G is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ATM	NM_000051.4 link	c.967A>G	p.Ile323Val	missense_variant	Exon 8 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.967A>G	p.Ile323Val	missense_variant	Exon 8 of 63		NM_000051.4	ENSP00000501606.1		Q13315

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152246

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:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000797

AC:

AN:

251086

Hom.:

AF XY:

0.00000737

AC XY:

AN XY:

135744

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:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000881

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000479

AC:

AN:

1461144

Hom.:

Cov.:

AF XY:

0.00000550

AC XY:

AN XY:

726916

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:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000540

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152246

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74380

show subpopulations

Gnomad4 AFR

AF:

0.00

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:

0.0000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000434

Hom.:

Bravo

AF:

0.00000378

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:8

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Ataxia-telangiectasia syndrome

Pathogenic:3

Sep 28, 2017

Counsyl

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Dec 10, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces isoleucine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 323 of the ATM protein (p.Ile323Val). RNA analysis indicates that this missense change induces altered splicing and likely results in the loss of 101 amino acid residue(s), but is expected to preserve the integrity of the reading-frame. This variant is present in population databases (rs587781511, gnomAD 0.003%). This missense change has been observed in individuals with ataxia telangiectasia (PMID: 10817650, 23652012, 27664052, 31050087). ClinVar contains an entry for this variant (Variation ID: 141123). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is not expected to disrupt ATM protein function with a negative predictive value of 95%. Studies have shown that this missense change results in the activation of a cryptic splice site in exon 8 (internal data). For these reasons, this variant has been classified as Pathogenic. -

Apr 07, 2021

Johns Hopkins Genomics, Johns Hopkins University

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Hereditary cancer-predisposing syndrome

Pathogenic:2

Oct 17, 2023

Ambry Genetics

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.967A>G variant (also known as p.I323V), located in coding exon 7 of the ATM gene, results from an A to G substitution at nucleotide position 967. The isoleucine at codon 323 is replaced by valine, an amino acid with highly similar properties. This alteration has been detected both as the only mutation and in conjunction with a second mutation in individuals diagnosed with ataxia-telangiectasia (AT) (Li M et al. Am J Med Genet. 2000; 92:170-7; Lee P. et al. Nat Commun. 2013;4:1824; Carranza D. et al. Neuromolecular Med. 2017 Mar;19(1):161-174; Berland et al J Allergy Clin Immunol 2019 01;143(1):325-334.e2). This variant was also detected in one individual diagnosed with ovarian cancer (Sugino et al Sci Rep 2019 11;9(1):17808) and one individual diagnosed with pancreatic cancer (Cremin et al Cancer Med 2020 06;9(11):4004-4013). Functional analyses of cells generated from individuals diagnosed with AT with this alteration have shown loss of ATM protein and defects in DNA repair or survival following ionizing radiation (Lee P. et al. Nat Commun. 2013;4:1824; Carranza D. et al. Neuromolecular Med. 2017 Mar;19(1):161-174). This nucleotide position is highly conserved in available vertebrate species. In silico splice site analysis predicts that this alteration will result in the creation or strengthening of a novel splice donor site. RNA studies have demonstrated that this alteration results in abnormal splicing in the set of samples tested (Ambry internal data). This variant is considered to be rare based on population cohorts in the Genome Aggregation Database (gnomAD). Based on the majority of available evidence to date, this variant is likely to be pathogenic. -

Oct 03, 2023

Color Diagnostics, LLC DBA Color Health

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This c.967A>G variant is predicted to replace isoleucine with valine at codon 323 of the ATM protein. Computational prediction tool suggests that this variant may not impact protein structure and function (internally defined REVEL score threshold <= 0.5, PMID: 27666373). Splice site prediction tools suggest that this variant may impact RNA splicing by creating a new splice donor site. An RNA study using cells from a homozygous individual has shown that this variant results in two transcripts: the major one with an out-of-frame deletion including 99 bases of exon 8 and the entire exon 9 (r.967_1235del, p.Ile323Alafs*17) and the minor transcript with only in-frame deletion of 99 bases of exon 8 (r.967_1065del, p.Ile323_Gln355del) (PMID: 31050087). The transcript with the r.967A>G (p.Ile323Val) missense variant was not detected in this study, indicating almost complete splicing defect due to the c.967A>G variant. This variant has been reported in multiple individuals affected with ataxia telangiectasia in compound heterozygous state with another pathogenic variant (PMID: 10817650, 23652012, 27664052) or in homozygous state (PMID: 31050087). This variant has been identified in 2/251086 chromosomes in the general population by the Genome Aggregation Database (gnomAD). Based on the available evidence, this variant is classified as Pathogenic. -

Ataxia-telangiectasia syndrome;C0346153:Familial cancer of breast

Pathogenic:1

Jan 22, 2024

Fulgent Genetics, Fulgent Genetics

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

not provided

Pathogenic:1

Jun 13, 2023

GeneDx

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Patient-derived cells from a homozygous A-T patient, also harboring another homozygous ATM variant, demonstrated aberrant splicing, resulting an out-of-frame transcript leading to protein truncation (Fievet et al., 2019); In silico analysis supports a deleterious effect on splicing; Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant does not alter protein structure/function; This variant is associated with the following publications: (PMID: 23652012, 22529920, 26659599, 24145436, 10817650, 26246501, 31050087, 29906526, 27664052, 35245693, 31780705, 32255556) -

Familial cancer of breast

Pathogenic:1

Jan 11, 2024

Myriad Genetics, Inc.

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant is considered likely pathogenic. This variant has been reported in multiple individuals with clinical features of gene-specific disease [PMID: 10817650, 27664052]. Functional studies indicate this variant impacts protein function [PMID: 27664052]. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.14

BayesDel_addAF

Uncertain

0.028

BayesDel_noAF

Benign

-0.10

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.085

.;T;T

Eigen

Uncertain

0.59

Eigen_PC

Uncertain

0.61

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Benign

0.76

T;T;.

M_CAP

Benign

0.074

MetaRNN

Uncertain

0.48

T;T;T

MetaSVM

Benign

-0.48

MutationAssessor

Uncertain

2.0

.;M;M

PrimateAI

Uncertain

0.53

PROVEAN

Benign

-0.46

N;N;N

REVEL

Uncertain

0.33

Sift

Benign

0.18

T;T;T

Sift4G

Benign

0.17

T;T;T

Polyphen

0.98

.;D;D

Vest4

0.17, 0.15

MutPred

0.70

Gain of loop (P = 0.1069);Gain of loop (P = 0.1069);Gain of loop (P = 0.1069);

MVP

0.92

MPC

0.14

ClinPred

0.50

GERP RS

5.7

Varity_R

0.20

gMVP

0.35

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.96

Details are displayed if max score is > 0.2

DS_DG_spliceai

0.96

Position offset: -1

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