chr11-108244797-G-C

Position:

chr11-108244797-G-C

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_000051.4(ATM):c.672G>C(p.Lys224Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,096 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 Uncertain significance (★★). Another nucleotide change resulting in same amino acid change has been previously reported as Uncertain significancein ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. K224E) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 31)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

ATM
NM_000051.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:5

Conservation

PhyloP100: 0.984

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 Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.27359176).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ATM	NM_000051.4 linkuse as main transcript	c.672G>C	p.Lys224Asn	missense_variant	7/63	ENST00000675843.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ATM	ENST00000675843.1 linkuse as main transcript	c.672G>C	p.Lys224Asn	missense_variant	7/63		NM_000051.4	P1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000797

AC:

AN:

251086

Hom.:

AF XY:

0.00

AC XY:

AN XY:

135706

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000579

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:

0.00000137

AC:

AN:

1461096

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

726902

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000447

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:

0.00

GnomAD4 genome

Cov.:

Bravo

AF:

0.00000378

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:5

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

Nov 26, 2014

This variant is denoted ATM c.672G>C at the cDNA level, p.Lys224Asn (K224N) at the protein level, and results in the change of a Lysine to an Asparagine (AAG>AAC). This variant has not, to our knowledge, been published in the literature as pathogenic or benign. ATM Lys224Asn was not observed in approximately 6,500 individuals of European and African American ancestry in the NHLBI Exome Sequencing Project, indicating it is not a common benign variant in these populations. Since Lysine and Asparagine differ in some properties, this is considered a semi-conservative amino acid substitution. ATM Lys224Asn occurs at a position that is highly conserved in mammals and is not located in a known functional domain. In silico analyses are inconsistent regarding the effect this variant may have on protein structure and function. Based on currently available information, it is unclear whether ATM Lys224Asn is pathogenic or benign. We consider it to be a variant of uncertain significance. -

Ataxia-telangiectasia syndrome

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Oct 13, 2022

This sequence change replaces lysine, which is basic and polar, with asparagine, which is neutral and polar, at codon 224 of the ATM protein (p.Lys224Asn). This variant is present in population databases (rs769731317, gnomAD 0.006%). This variant has not been reported in the literature in individuals affected with ATM-related conditions. ClinVar contains an entry for this variant (Variation ID: 233153). Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Benign"; Align-GVGD: "Class C35"). 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. -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

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

Feb 03, 2017

Variant summary: The ATM c.672G>C (p.Lys224Asn) variant involves the alteration of a non-conserved nucleotide. It is located outside of some commonly known domains (InterPro, UniProt). 4/4 in silico tools used predict damaging outcome for this variant. This variant was found in 1/121204 control chromosomes from ExAC at a frequency of 0.0000083, which does not exceed the estimated maximal expected allele frequency of a pathogenic ATM variant (0.0010005). The variant of interest has not, to our knowledge, been reported in affected individuals via publications. It has been reported as germline variant by one laboratory in ClinVar and as somatic variant in one breast and one large intestine carcinoma samples in COSMIC. One internal sample (germline testing) carrying this variant also carries another variant of uncertain significance APC c.730-3C>T. One clinical diagnostic laboratory has classified this variant as uncertain significance. Taken together, this variant is classified as a variant of uncertain significance (VUS) until additional information becomes available. -

Familial cancer of breast

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Baylor Genetics

Dec 03, 2023

- -

Hereditary cancer-predisposing syndrome

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jul 29, 2020

The p.K224N variant (also known as c.672G>C), located in coding exon 6 of the ATM gene, results from a G to C substitution at nucleotide position 672. The lysine at codon 224 is replaced by asparagine, an amino acid with similar properties. This amino acid position is well conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.28

BayesDel_addAF

Benign

-0.37

BayesDel_noAF

Benign

-0.59

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.098

.;T;T

Eigen

Uncertain

0.53

Eigen_PC

Uncertain

0.53

FATHMM_MKL

Uncertain

0.95

LIST_S2

Benign

0.72

T;T;.

M_CAP

Benign

0.021

MetaRNN

Benign

0.27

T;T;T

MetaSVM

Benign

-0.99

MutationAssessor

Uncertain

2.4

.;M;M

MutationTaster

Benign

0.95

D;D

PrimateAI

Benign

0.41

PROVEAN

Uncertain

-2.6

D;N;N

REVEL

Benign

0.15

Sift

Uncertain

0.0050

D;D;D

Sift4G

Uncertain

0.011

D;D;D

Polyphen

0.99

.;D;D

Vest4

0.14, 0.15

MutPred

0.36

Loss of ubiquitination at K224 (P = 0.0107);Loss of ubiquitination at K224 (P = 0.0107);Loss of ubiquitination at K224 (P = 0.0107);

MVP

0.97

MPC

0.16

ClinPred

0.89

GERP RS

5.4

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.35

gMVP

0.28

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