chr11-108317400-AT-A

Variant summary

Our verdict is Pathogenic. Variant got 18 ACMG points: 18P and 0B. PVS1PM2PP5_Very_Strong

The NM_000051.4(ATM):​c.6228del​(p.Leu2077PhefsTer5) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000274 in 1,460,472 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: 28)
Exomes 𝑓: 0.0000027 ( 0 hom. )

Consequence

ATM
NM_000051.4 frameshift

Scores

Not classified

Clinical Significance

Pathogenic criteria provided, multiple submitters, no conflicts P:10

Conservation

PhyloP100: 3.18
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]
C11orf65 (HGNC:28519): (chromosome 11 open reading frame 65) Predicted to be involved in negative regulation of mitochondrial fission and negative regulation of protein targeting to mitochondrion. Predicted to be located in cytosol and mitochondrial outer membrane. [provided by Alliance of Genome Resources, Apr 2022]

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ACMG classification

Classification made for transcript

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 11-108317400-AT-A is Pathogenic according to our data. Variant chr11-108317400-AT-A is described in ClinVar as [Pathogenic]. Clinvar id is 186516.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
ATMNM_000051.4 linkuse as main transcriptc.6228del p.Leu2077PhefsTer5 frameshift_variant 43/63 ENST00000675843.1

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
ATMENST00000675843.1 linkuse as main transcriptc.6228del p.Leu2077PhefsTer5 frameshift_variant 43/63 NM_000051.4 P1

Frequencies

GnomAD3 genomes
Cov.:
28
GnomAD3 exomes
AF:
0.00000398
AC:
1
AN:
251394
Hom.:
0
AF XY:
0.00000736
AC XY:
1
AN XY:
135868
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
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:
0.00000879
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000274
AC:
4
AN:
1460472
Hom.:
0
Cov.:
30
AF XY:
0.00000275
AC XY:
2
AN XY:
726624
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.0000766
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
9.00e-7
Gnomad4 OTH exome
AF:
0.0000166
GnomAD4 genome
Cov.:
28

ClinVar

Significance: Pathogenic
Submissions summary: Pathogenic:10
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

Ataxia-telangiectasia syndrome Pathogenic:3
Pathogenic, no assertion criteria providedclinical testingNatera, Inc.Sep 16, 2020- -
Pathogenic, criteria provided, single submitterclinical testingLaboratory for Molecular Medicine, Mass General Brigham Personalized MedicineMar 22, 2019The p.Leu2077fs variant in ATM has been reported in one individual with ataxia-telangiectasia; however a second variant in the ATM gene was not identified (Li 2000). In addition, the variant was detected in one patient with a history of breast and pancreatic cancer, and a family history of thyroid, colon and prostate cancer (Frey 2015). The variant has also been reported in the ClinVar database (Variation ID# 186516), and was absent from large population studies. The p.Leu2077fs variant is predicted to cause a frameshift, which alters the protein’s amino acid sequence beginning at position 2077 and leads to a premature termination codon 5 amino acids downstream. This alteration is then predicted to lead to a truncated or absent protein. In summary, this variant meets criteria to be classified as pathogenic for ataxia-telangiectasia in an autosomal recessive manner. Additionally, carriers of pathogenic ATM variants may be at increased risk for developing cancers (Gatti 2016, van Os 2016). ACMG/AMP criteria applied: PVS1; PM2; PS4_supporting. -
Pathogenic, criteria provided, single submitterclinical testingLabcorp Genetics (formerly Invitae), LabcorpDec 08, 2023This sequence change creates a premature translational stop signal (p.Leu2077Phefs*5) 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: 10817650). ClinVar contains an entry for this variant (Variation ID: 186516). For these reasons, this variant has been classified as Pathogenic. -
not provided Pathogenic:2
Pathogenic, criteria provided, single submitterclinical testingEurofins Ntd Llc (ga)Jan 26, 2018- -
Pathogenic, criteria provided, single submitterclinical testingGeneDxMay 10, 2021Frameshift variant predicted to result in protein truncation or nonsense mediated decay in a gene for which loss-of-function is a known mechanism of disease; Not observed at a significant frequency in large population cohorts (Lek 2016); This variant is associated with the following publications: (PMID: 26296696, 31285527, 10817650, 27304073, 28767289, 28495237, 29439820, 32445285) -
Hereditary cancer-predisposing syndrome Pathogenic:2
Pathogenic, criteria provided, single submitterclinical testingColor Diagnostics, LLC DBA Color HealthMay 30, 2023This variant deletes 1 nucleotide in exon 43 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 been reported in an individual affected with ataxia-telangiectasia (PMID: 10817650) and in individuals affected with breast cancer, pancreatic cancer, and melanoma (PMID: 26296696, 28495237, 28767289, 34262154, 36091166). This variant has also been identified in 1/251394 chromosomes 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. -
Pathogenic, criteria provided, single submitterclinical testingAmbry GeneticsMar 07, 2022The c.6228delT pathogenic mutation, located in coding exon 42 of the ATM gene, results from a deletion of one nucleotide at nucleotide position 6228, causing a translational frameshift with a predicted alternate stop codon (p.L2077Ffs*5). This pathogenic mutation has been reported in an individual with ataxia-telangiectasia (Li A and Swift M. Am. J. Med. Genet. 2000 May;92(3):170-7). It has also been reported in an individual with a personal history of breast and pancreatic cancer and family history of thyroid, colon and prostate cancer (Frey MK et al. Gynecol. Oncol. 2015 Nov;139(2):211-5). The c.6228delT mutation has been detected in a patient with pancreatic cancer and a family history of breast cancer (Shindo K et al. J. Clin. Oncol. 2017 Oct;35:3382-3390). 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. -
Familial cancer of breast Pathogenic:2
Pathogenic, criteria provided, single submitterclinical testingBaylor GeneticsMar 30, 2024- -
Pathogenic, criteria provided, single submitterclinical testingMyriad Genetics, Inc.Jan 29, 2024This variant is considered pathogenic. This variant creates a frameshift predicted to result in premature protein truncation. -
Breast cancer, susceptibility to Pathogenic:1
Pathogenic, criteria provided, single submitterclinical testingGenetic Services Laboratory, University of ChicagoApr 05, 2017- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.040
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.

Other links and lift over

dbSNP: rs786203008; hg19: chr11-108188127; API