rs1555092536

Positions:

• chr11-108282852-A-G
• chr11-108282852-A-T

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_000051.4(ATM):​c.3719A>G​(p.Asn1240Ser) variant causes a missense change. The variant allele was found at a frequency of 0.000000732 in 1,365,958 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 (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 7.3e-7 (0 hom.)
• Consequence: ATM NM_000051.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 6.27

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
ATM	NM_000051.4	c.3719A>G	p.Asn1240Ser	missense_variant	25/63	ENST00000675843.1	NP_000042.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ATM	ENST00000675843.1	c.3719A>G	p.Asn1240Ser	missense_variant	25/63		NM_000051.4	ENSP00000501606	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 7.32e-7 AC: 1 AN: 1365958 Hom.: 0 Cov.: 26 AF XY: 0.00000146 AC XY: 1 AN XY: 684060

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: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 9.72e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Hereditary cancer-predisposing syndrome Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Color Diagnostics, LLC DBA Color Health

Dec 05, 2023

This missense variant replaces asparagine with serine at codon 1240 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 not been reported in individuals affected with ATM-related disorders in the literature. This variant has not been identified 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. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.11
BayesDel_addAF	Benign	-0.086	T
BayesDel_noAF	Benign	-0.36
CADD	Uncertain	25
DANN	Uncertain	0.99
DEOGEN2	Benign	0.095	.;T;T
Eigen	Benign	0.035
Eigen_PC	Benign	0.19
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.87	D;T;.
M_CAP	Benign	0.064	D
MetaRNN	Benign	0.32	T;T;T
MetaSVM	Benign	-0.76	T
MutationAssessor	Uncertain	2.7	.;M;M
MutationTaster	Benign	0.98	D;D
PrimateAI	Uncertain	0.57	T
PROVEAN	Benign	-1.3	N;N;N
REVEL	Benign	0.11
Sift	Benign	0.083	T;T;T
Sift4G	Pathogenic	0.0	D;T;T
Polyphen		0.35	.;B;B
Vest4		0.75, 0.78
MutPred		0.46		Loss of catalytic residue at N1240 (P = 0.0334);Loss of catalytic residue at N1240 (P = 0.0334);Loss of catalytic residue at N1240 (P = 0.0334);
MVP		0.84
MPC		0.32
ClinPred		0.93	D
GERP RS		5.4
Varity_R		0.42
gMVP		0.097

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.30		Details are displayed if max score is > 0.2
DS_AG_spliceai		0.30		Position offset: 1

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs1555092536; hg19: chr11-108153579;