11-108271256-T-C

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 0P and 3B. BP4_ModerateBP6

The NM_000051.4(ATM):c.2927T>C(p.Val976Ala) variant causes a missense change. The variant allele was found at a frequency of 0.0000242 in 1,613,844 control chromosomes in the GnomAD database, with no homozygous occurrence. 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. V976M) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00014 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000012 ( 0 hom. )

Consequence

ATM
NM_000051.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:7B:2

Conservation

PhyloP100: 3.73

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 Likely_benign. Variant got -3 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.13464823).

BP6

Variant 11-108271256-T-C is Benign according to our data. Variant chr11-108271256-T-C is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 187123.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=2, Uncertain_significance=7}.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ATM	NM_000051.4 linkuse as main transcript	c.2927T>C	p.Val976Ala	missense_variant	20/63	ENST00000675843.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ATM	ENST00000675843.1 linkuse as main transcript	c.2927T>C	p.Val976Ala	missense_variant	20/63		NM_000051.4	P1

Frequencies

GnomAD3 genomes

AF:

0.000138

AC:

AN:

152040

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000507

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

GnomAD3 exomes

AF:

0.0000358

AC:

AN:

251230

Hom.:

AF XY:

0.0000295

AC XY:

AN XY:

135802

show subpopulations

Gnomad AFR exome

AF:

0.000555

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000123

AC:

AN:

1461686

Hom.:

Cov.:

AF XY:

0.00000688

AC XY:

AN XY:

727146

show subpopulations

Gnomad4 AFR exome

AF:

0.000478

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:

0.00

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

AF:

0.000138

AC:

AN:

152158

Hom.:

Cov.:

AF XY:

0.000148

AC XY:

AN XY:

74394

show subpopulations

Gnomad4 AFR

AF:

0.000506

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:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000111

Hom.:

Bravo

AF:

0.000147

ESP6500AA

AF:

0.00136

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000659

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:7Benign:2

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Ataxia-telangiectasia syndrome

Uncertain:2

Uncertain significance, criteria provided, single submitter	clinical testing	Invitae	Jan 29, 2024	This sequence change replaces valine, which is neutral and non-polar, with alanine, which is neutral and non-polar, at codon 976 of the ATM protein (p.Val976Ala). The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. This missense change has been observed in individual(s) with acute myeloid leukemia and breast cancer (PMID: 26689913, 28503720). ClinVar contains an entry for this variant (Variation ID: 187123). Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Not Available"; PolyPhen-2: "Benign"; Align-GVGD: "Not Available". The alanine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. 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. -
Uncertain significance, criteria provided, single submitter	clinical testing	Counsyl	May 14, 2018	- -

not provided

Uncertain:2

Uncertain significance, criteria provided, single submitter	clinical testing	GeneDx	Nov 16, 2021	In silico analysis supports that this missense variant does not alter protein structure/function; Identified in individuals with acute myelogenous leukemia, breast cancer, or renal cancer (Lu 2015, Rummel 2017, Yehia 2018); This variant is associated with the following publications: (PMID: 23555315, 28503720, 26689913, 29684080) -
Uncertain significance, criteria provided, single submitter	clinical testing	Athena Diagnostics	Jun 02, 2021	- -

Hereditary cancer-predisposing syndrome

Uncertain:1Benign:1

Uncertain significance, criteria provided, single submitter	clinical testing	Color Diagnostics, LLC DBA Color Health	Oct 02, 2023	This missense variant replaces valine with alanine at codon 976 of the ATM protein. Computational prediction suggests that this variant may not impact protein structure and function (internally defined REVEL score threshold <= 0.5, PMID: 27666373). To our knowledge, functional studies have not been reported for this variant. This variant has been reported in an individual affected with breast cancer (PMID: 28503720) and in an individual affected with acute myeloid leukemia (PMID: 26689913). This variant has also been identified in 9/246048 chromosomes in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance. -
Likely benign, criteria provided, single submitter	clinical testing	Ambry Genetics	Apr 18, 2018	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. -

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

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

Jun 09, 2022

Variant summary: ATM c.2927T>C (p.Val976Ala) results in a non-conservative amino acid change in the encoded protein sequence. Three of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 3.6e-05 in 251230 control chromosomes, predominantly at a frequency of 0.00055 (9/16230) within the African or African-American subpopulation in the gnomAD database. It has also been observed at a frequency of 0.001172 (3/2559) within African Americans in women over seventy with no history of cancer (FLOSSIES database). The available data on variant occurrences in the general population are insufficient to allow any conclusion about variant significance. c.2927T>C has been reported in the literature in individuals affected with breast cancer and acute myeloid leukemia, without strong evidence for causality (example Haiman_2013, Lu_2015, Rummel_2017). 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. Six laboratories classified the variant as VUS, and one as likely benign. Based on the evidence outlined above, the variant was classified as uncertain significance. -

Familial cancer of breast

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Baylor Genetics

Oct 20, 2023

- -

Hereditary cancer

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Mendelics

Jan 23, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.36

BayesDel_addAF

Benign

-0.11

BayesDel_noAF

Uncertain

-0.030

Cadd

Benign

Dann

Uncertain

1.0

Eigen

Benign

0.074

Eigen_PC

Uncertain

0.22

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Benign

0.58

T;T;.

M_CAP

Uncertain

0.20

MetaRNN

Benign

0.13

T;T;T

MetaSVM

Uncertain

-0.27

MutationTaster

Benign

0.83

D;D

PrimateAI

Benign

0.38

PROVEAN

Benign

-2.0

N;N;N

REVEL

Uncertain

0.37

Sift

Benign

0.041

D;D;D

Sift4G

Pathogenic

0.0

D;D;D

Polyphen

0.020

.;B;B

Vest4

0.16, 0.16

MVP

0.93

MPC

0.15

ClinPred

0.14

GERP RS

5.5

Varity_R

0.26

gMVP

0.25

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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