rs1266811647

Variant names:

Your query was ambiguous. Multiple possible variants found:

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_000051.4(ATM):c.3725C>A(p.Thr1242Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000147 in 1,357,720 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 17/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. T1242A) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000015 ( 0 hom. )

Consequence

ATM
NM_000051.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.05

Publications

0 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: 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=0.07320362).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ATM	NM_000051.4 link	c.3725C>A	p.Thr1242Lys	missense_variant	Exon 25 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.3725C>A	p.Thr1242Lys	missense_variant	Exon 25 of 63		NM_000051.4	ENSP00000501606.1		Q13315

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000147

AC:

AN:

1357720

Hom.:

Cov.:

AF XY:

0.00000147

AC XY:

AN XY:

680242

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

30782

American (AMR)

AF:

0.00

AC:

AN:

42866

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25236

East Asian (EAS)

AF:

0.00

AC:

AN:

39030

South Asian (SAS)

AF:

0.00

AC:

AN:

83232

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53124

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5488

European-Non Finnish (NFE)

AF:

0.00000196

AC:

AN:

1021276

Other (OTH)

AF:

0.00

AC:

AN:

56686

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.0000000000983081), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.275

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:

0.0000651

Hom.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Ataxia-telangiectasia syndrome

Uncertain:1

Aug 26, 2021

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces threonine with lysine at codon 1242 of the ATM protein (p.Thr1242Lys). The threonine residue is moderately conserved and there is a moderate physicochemical difference between threonine and lysine. This variant is not present in population databases (ExAC no frequency). This variant has not been reported in the literature in individuals affected with ATM-related conditions. Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Deleterious"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0". The lysine 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. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.086

BayesDel_addAF

Benign

-0.047

BayesDel_noAF

Benign

-0.30

CADD

Benign

(source)

DANN

Benign

0.82

DEOGEN2

Benign

0.085

.;T;T

Eigen

Benign

-0.92

Eigen_PC

Benign

-0.90

FATHMM_MKL

Benign

0.084

LIST_S2

Benign

0.53

T;T;.

M_CAP

Benign

0.041

MetaRNN

Benign

0.073

T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.5

.;L;L

PhyloP100

1.0

PrimateAI

Benign

0.33

PROVEAN

Benign

-1.1

N;N;N

REVEL

Benign

0.062

Sift

Benign

0.089

T;T;T

Sift4G

Uncertain

0.015

D;D;D

Polyphen

0.0020

.;B;B

Vest4

0.31, 0.34

MutPred

0.44

Gain of solvent accessibility (P = 0.0155);Gain of solvent accessibility (P = 0.0155);Gain of solvent accessibility (P = 0.0155);

MVP

0.70

MPC

0.15

ClinPred

0.058

GERP RS

2.2

Varity_R

0.073

gMVP

0.31

Mutation Taster

=90/10

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

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over