chr11-108268456-A-G

Position:

• chr11-108268456-A-G

Variant summary

Our verdict is Benign. Variant got -21 ACMG points: 0P and 21B. BP4_Strong BP6_Very_Strong BP7 BS1 BS2

The NM_000051.4(ATM):​c.2685A>G​(p.Leu895=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00243 in 1,614,020 control chromosomes in the GnomAD database, including 91 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★). Synonymous variant affecting the same amino acid position (i.e. L895L) has been classified as Likely benign.

• Frequency:
  • Genomes: 𝑓 0.013 (52 hom., cov: 32)
  • Exomes 𝑓: 0.0013 (39 hom.)
• Consequence: ATM NM_000051.4 synonymous
• Clinical Significance: Benign criteria provided, multiple submitters, no conflicts B:25
• Conservation: PhyloP100: -1.50

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 Benign. Variant got -21 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.9).
• BP6: Variant 11-108268456-A-G is Benign according to our data. Variant chr11-108268456-A-G is described in ClinVar as [Benign]. Clinvar id is 140770.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr11-108268456-A-G is described in Lovd as [Benign].
• BP7: Synonymous conserved (PhyloP=-1.5 with no splicing effect.
• BS1: Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.0129 (1957/152292) while in subpopulation AFR AF= 0.0438 (1821/41550). AF 95% confidence interval is 0.0422. There are 52 homozygotes in gnomad4. There are 873 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.
• BS2: High Homozygotes in GnomAd4 at 52 AD,AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ATM	NM_000051.4	c.2685A>G	p.Leu895=	synonymous_variant	18/63	ENST00000675843.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ATM	ENST00000675843.1	c.2685A>G	p.Leu895=	synonymous_variant	18/63		NM_000051.4	P1

Frequencies

GnomAD3 genomes AF: 0.0128 AC: 1950 AN: 152174 Hom.: 52 Cov.: 32

Gnomad AFR AF: 0.0438

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00648

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000207

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00949

Gnomad NFE AF: 0.000191

Gnomad OTH AF: 0.00955

GnomAD3 exomes AF: 0.00355 AC: 892 AN: 251356 Hom.: 26 AF XY: 0.00252 AC XY: 342 AN XY: 135848

Gnomad AFR exome AF: 0.0479

Gnomad AMR exome AF: 0.00205

Gnomad ASJ exome AF: 0.0000992

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.0000980

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.000194

Gnomad OTH exome AF: 0.00261

GnomAD4 exome AF: 0.00135 AC: 1967 AN: 1461728 Hom.: 39 Cov.: 31 AF XY: 0.00119 AC XY: 868 AN XY: 727156

Gnomad4 AFR exome AF: 0.0451

Gnomad4 AMR exome AF: 0.00271

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.0000252

Gnomad4 SAS exome AF: 0.0000812

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.000122

Gnomad4 OTH exome AF: 0.00290

GnomAD4 genome AF: 0.0129 AC: 1957 AN: 152292 Hom.: 52 Cov.: 32 AF XY: 0.0117 AC XY: 873 AN XY: 74460

Gnomad4 AFR AF: 0.0438

Gnomad4 AMR AF: 0.00647

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.000207

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000191

Gnomad4 OTH AF: 0.00945

Alfa AF: 0.00457 Hom.: 9

Bravo AF: 0.0152

Asia WGS AF: 0.00144 AC: 5 AN: 3478

EpiCase AF: 0.000382

EpiControl AF: 0.000296

ClinVar

Significance: Benign

Submissions summary: Benign:25

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not specified Benign:8

Benign, no assertion criteria provided	clinical testing	Genome Diagnostics Laboratory, Amsterdam University Medical Center	-	- -
Benign, no assertion criteria provided	clinical testing	Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+	-	- -
Benign, no assertion criteria provided	clinical testing	Clinical Genetics, Academic Medical Center	-	- -
Benign, criteria provided, single submitter	clinical testing	PreventionGenetics, part of Exact Sciences	Oct 21, 2016	- -
Benign, no assertion criteria provided	clinical testing	Genome Diagnostics Laboratory, University Medical Center Utrecht	-	- -
Benign, no assertion criteria provided	clinical testing	Clinical Genetics Laboratory, Department of Pathology, Netherlands Cancer Institute	-	- -
Benign, no assertion criteria provided	clinical testing	Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen	-	- -
Benign, criteria provided, single submitter	clinical testing	Center for Genomic Medicine, Rigshospitalet, Copenhagen University Hospital	Aug 15, 2023	- -

not provided Benign:5

Benign, criteria provided, single submitter	clinical testing	Athena Diagnostics	May 30, 2018	- -
Benign, criteria provided, single submitter	clinical testing	ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories	Aug 24, 2023	- -
Likely benign, no assertion criteria provided	clinical testing	Laboratory of Diagnostic Genome Analysis, Leiden University Medical Center (LUMC)	-	- -
Benign, criteria provided, single submitter	clinical testing	GeneDx	Mar 03, 2015	This variant is associated with the following publications: (PMID: 17333338) -
Benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -

Hereditary cancer-predisposing syndrome Benign:4

Likely benign, no assertion criteria provided	clinical testing	True Health Diagnostics	Jun 18, 2018	- -
Benign, criteria provided, single submitter	clinical testing	Color Diagnostics, LLC DBA Color Health	Apr 08, 2015	- -
Benign, criteria provided, single submitter	clinical testing	Ambry Genetics	Nov 25, 2014	This alteration is classified as 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. -
Benign, criteria provided, single submitter	curation	Sema4, Sema4	Mar 22, 2020	- -

Ataxia-telangiectasia syndrome Benign:3

Benign, no assertion criteria provided	clinical testing	Natera, Inc.	Sep 16, 2020	- -
Benign, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Jan 12, 2018	This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -
Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Feb 01, 2024	- -

Familial cancer of breast Benign:2

Benign, criteria provided, single submitter	clinical testing	Myriad Genetics, Inc.	May 10, 2024	This variant is considered benign. This variant is a silent/synonymous amino acid change and it is not expected to impact splicing. -
Benign, criteria provided, single submitter	clinical testing	KCCC/NGS Laboratory, Kuwait Cancer Control Center	Jul 07, 2023	- -

Breast and/or ovarian cancer Benign:1

Benign, criteria provided, single submitter

clinical testing

CHEO Genetics Diagnostic Laboratory, Children's Hospital of Eastern Ontario

Jul 02, 2021

- -

Malignant tumor of breast Benign:1

Benign, no assertion criteria provided

clinical testing

Department of Pathology and Laboratory Medicine, Sinai Health System

-

The ATM p.Leu895= variant was identified in 1 of 502 proband chromosomes (frequency: 0.002) from individuals or families with breast cancer or leukemia and was not identified in 396 control chromosomes from healthy individuals (Meier 2005, Austen 2008). The variant was also identified in the following databases: dbSNP (ID: rs3218687) as “With other allele”, in ClinVar (classified 2x as benign, 1x as likely benign), Clinvitae (classified 1x as benign, 1x as conflicting interpretations of pathogenicity), and Cosmic (1x as neutral). The variant was not identified in the MutDB, LOVD 3.0, or ATM-LOVD databases. The variant was identified in control databases in 1217 of 277096 (32 homozygous) chromosomes at a frequency of 0.004 increasing the likelihood this could be a low frequency benign variant (Genome Aggregation Consortium Feb 27, 2017). The variant was identified in the following populations at a frequency greater than 1%: African in 1105 of 24026 chromosomes (freq: 0.046). The p.Leu895= variant is not expected to have clinical significance because it does not result in a change of amino acid and is not located in a known consensus splice site. In addition, in silico or computational prediction software programs (SpliceSiteFinder, MaxEntScan, NNSPLICE, GeneSplicer, HumanSpliceFinder) do not predict a difference in splicing. In summary, based on the above information this variant meets our laboratory's criteria to be classified as benign. -

Hereditary breast ovarian cancer syndrome Benign:1

Benign, criteria provided, single submitter

clinical testing

National Health Laboratory Service, Universitas Academic Hospital and University of the Free State

Apr 19, 2022

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.90
CADD	Benign	1.3
DANN	Benign	0.49

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

LitVar

Other links and lift over

dbSNP: rs3218687; hg19: chr11-108139183; COSMIC: COSV53733542;