rs1175457710

Variant names:

• chr11-108267224-TG-T
• rs1175457710
• NM_000051.4:c.2521delG

Variant summary

Our verdict is Pathogenic. Variant got 18 ACMG points: 18P and 0B. PVS1 PM2 PP5_Very_Strong

The NM_000051.4(ATM):​c.2521delG​(p.Asp841IlefsTer6) variant causes a frameshift change. The variant allele was found at a frequency of 0.000000684 in 1,461,836 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Pathogenic (★★). Variant results in nonsense mediated mRNA decay.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: ATM NM_000051.4 frameshift
• Clinical Significance: Pathogenic criteria provided, multiple submitters, no conflicts P:10
• Conservation: PhyloP100: 5.17

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 Pathogenic. Variant got 18 ACMG points.

• PVS1: Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 11-108267224-TG-T is Pathogenic according to our data. Variant chr11-108267224-TG-T is described in ClinVar as [Pathogenic]. Clinvar id is 453419.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr11-108267224-TG-T is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ATM	NM_000051.4	c.2521delG	p.Asp841IlefsTer6	frameshift_variant	Exon 17 of 63	ENST00000675843.1	NP_000042.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ATM	ENST00000675843.1	c.2521delG	p.Asp841IlefsTer6	frameshift_variant	Exon 17 of 63		NM_000051.4	ENSP00000501606.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461836 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 727226

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: 8.99e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:10

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Ataxia-telangiectasia syndrome Pathogenic:3

Nov 11, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change creates a premature translational stop signal (p.Asp841Ilefs*6) in the ATM gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in ATM are known to be pathogenic (PMID: 23807571, 25614872). This variant is not present in population databases (gnomAD no frequency). This premature translational stop signal has been observed in individual(s) with ataxia-telangiectasia (PMID: 9792409). This variant is also known as 2519delG. ClinVar contains an entry for this variant (Variation ID: 453419). For these reasons, this variant has been classified as Pathogenic. -

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Institute for Genomic Statistics and Bioinformatics, University Hospital Bonn

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

In the ATM gene (transcript: NM_000051) the heterozygous frame shift variant c.2521del; p.Asp841Ilefs*6 in exon 17 was detected. This variant was inherited from the mother. The germline variant leads to a shift in the reading frame and, after five incorrect amino acids, to a premature stop codon. This variant is not recorded in population-related databases. In the phenotype-related database LOVD it is listed once as pathogenic and once as a variant of unclear functional relevance, in HGMD it is classified as pathogenic and once as likely pathogenic and in ClinVar it is listed twice as pathogenic. The ACMG classification for this variant is: pathogenic (Class 5: PVS1, PM2, PM3, PP5). -

Sep 16, 2020

Natera, Inc.

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: clinical testing

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not provided Pathogenic:3

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Clinical Genetics Laboratory, Department of Pathology, Netherlands Cancer Institute

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

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Genome Diagnostics Laboratory, Amsterdam University Medical Center

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

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Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Hereditary cancer-predisposing syndrome Pathogenic:2

Sep 26, 2023

Ambry Genetics

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.2521delG variant, located in coding exon 16 of the ATM gene, results from a deletion of one nucleotide at nucleotide position 2521, causing a translational frameshift with a predicted alternate stop codon (p.D841Ifs*6). This alteration, referred to as c.2519delG, was identified in conjunction with a second ATM alteration in an individual with features of ataxia telangiectasia (Broeks A et al. Hum. Mutat., 1998;12:330-7). This variant has also been identified in at least one patient with a personal and family history of breast and/or ovarian cancer (Maxwell KN et al. Am. J. Hum. Genet., 2016 May;98:801-817). In addition to the clinical data presented in the literature, this alteration is expected to result in loss of function by premature protein truncation or nonsense-mediated mRNA decay. As such, this alteration is interpreted as a disease-causing mutation. -

Jan 15, 2020

Color Diagnostics, LLC DBA Color Health

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant deletes 1 nucleotide in exon 17 of the ATM gene, creating a frameshift and premature translation stop signal. This variant is expected to result in an absent or non-functional protein product. This variant has not been identified in the general population by the Genome Aggregation Database (gnomAD). Loss of ATM function is a known mechanism of disease (clinicalgenome.org). Based on the available evidence, this variant is classified as Pathogenic. -

See cases Pathogenic:1

Jul 30, 2024

Institute of Human Genetics, University Hospital Muenster

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

ACMG categories: PVS1,PM2_sup,PM3 -

Familial cancer of breast Pathogenic:1

Jan 18, 2024

Myriad Genetics, Inc.

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant is considered pathogenic. This variant creates a frameshift predicted to result in premature protein truncation. -

Computational scores

Source: dbNSFP v4.3

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: rs1175457710; hg19: chr11-108137951;