11-108250699-A-T

Position:

chr11-108250699-A-T

Variant summary

Our verdict is Pathogenic. Variant got 10 ACMG points: 10P and 0B. PVS1_ModeratePP5_Very_Strong

The NM_000051.4(ATM):c.1236-2A>T variant causes a splice acceptor, intron change involving the alteration of a conserved nucleotide. In-silico tool predicts a pathogenic outcome for this variant. 3/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Likely pathogenic (★★).

Frequency

Genomes: 𝑓 0.00017 ( 0 hom., cov: 26)

Exomes 𝑓: 0.000043 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

ATM
NM_000051.4 splice_acceptor, intron

Scores

Splicing: ADA: 1.000

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:5

Conservation

PhyloP100: 8.80

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:

ATM (HGNC:):

ATM links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 10 ACMG points.

PVS1

Splicing +-2 bp (donor or acceptor) variant, product NOT destroyed by NMD, known LOF gene, truncates exone, which is 0.040453605 fraction of the gene. Cryptic splice site detected, with MaxEntScore 9.3, offset of 7, new splice context is: ttttttttttttggctacAGatt. Cryptic site results in frameshift change. If cryptic site found is not functional and variant results in exon loss, it results in inframe change.

PP5

Variant 11-108250699-A-T is Pathogenic according to our data. Variant chr11-108250699-A-T is described in ClinVar as [Likely_pathogenic]. Clinvar id is 375249.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
ATM	NM_000051.4 linkuse as main transcript	c.1236-2A>T		splice_acceptor_variant, intron_variant		ENST00000675843.1	NP_000042.3	Q13315A0A024R3C7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ATM	ENST00000675843.1 linkuse as main transcript	c.1236-2A>T		splice_acceptor_variant, intron_variant			NM_000051.4	ENSP00000501606.1		Q13315

Frequencies

GnomAD3 genomes

AF:

0.00

AC:

AN:

85722

Hom.:

Cov.:

FAILED QC

Gnomad AFR

AF:

0.0000404

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.000480

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000281

Gnomad OTH

AF:

0.000873

GnomAD3 exomes

AF:

0.0000770

AC:

AN:

168756

Hom.:

AF XY:

0.0000535

AC XY:

AN XY:

93480

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000134

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000875

Gnomad SAS exome

AF:

0.000150

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000737

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

Data not reliable, filtered out with message: AS_VQSR

AF:

0.0000431

AC:

AN:

1277532

Hom.:

Cov.:

AF XY:

0.0000425

AC XY:

AN XY:

635658

show subpopulations

Gnomad4 AFR exome

AF:

0.000384

Gnomad4 AMR exome

AF:

0.000516

Gnomad4 ASJ exome

AF:

0.0000899

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000907

Gnomad4 FIN exome

AF:

0.0000535

Gnomad4 NFE exome

AF:

0.0000130

Gnomad4 OTH exome

AF:

0.0000949

GnomAD4 genome

Data not reliable, filtered out with message: AS_VQSR

AF:

0.000175

AC:

AN:

85770

Hom.:

Cov.:

AF XY:

0.000147

AC XY:

AN XY:

40856

show subpopulations

Gnomad4 AFR

AF:

0.0000403

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.000480

Gnomad4 NFE

AF:

0.000281

Gnomad4 OTH

AF:

0.000862

Alfa

AF:

0.000151

Hom.:

ExAC

AF:

0.0000247

AC:

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:5

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Ataxia-telangiectasia syndrome

Pathogenic:2

Pathogenic, criteria provided, single submitter	curation	Laboratory of Medical Genetics, National & Kapodistrian University of Athens	Feb 01, 2024	- -
Pathogenic, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Sep 22, 2023	For these reasons, this variant has been classified as Pathogenic. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may disrupt the consensus splice site. Studies have shown that disruption of this splice site alters ATM gene expression (PMID: 14695534). ClinVar contains an entry for this variant (Variation ID: 375249). Disruption of this splice site has been observed in individual(s) with breast cancer and ataxia-telangiectasia (PMID: 14695534, 24763289, 30303537). The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. This sequence change affects an acceptor splice site in intron 9 of the ATM gene. It is expected to disrupt RNA splicing. Variants that disrupt the donor or acceptor splice site typically lead to a loss of protein function (PMID: 16199547), and loss-of-function variants in ATM are known to be pathogenic (PMID: 23807571, 25614872). -

Malignant tumor of urinary bladder

Pathogenic:1

Pathogenic, no assertion criteria provided

research

Laboratory of Urology, Hospital Clinic de Barcelona

- -

Hereditary cancer-predisposing syndrome

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Ambry Genetics

Jan 12, 2021

The c.1236-2A>T intronic pathogenic mutation results from an A to T substitution two nucleotides upstream from coding exon 9 in the ATM gene. This nucleotide position is highly conserved in available vertebrate species. This alteration was identified in 1/1207 cases of French women diagnosed with breast cancer who had a sister with breast cancer and were BRCA1 and BRCA2 negative and 1/1199 general population controls (Girard E et al. Int J Cancer, 2019 04;144:1962-1974). In silico splice site analysis predicts that this alteration will weaken the native splice acceptor site and will result in the creation or strengthening of a novel splice acceptor site. RNA studies have demonstrated that this alteration results in abnormal splicing in the set of samples tested (Ambry internal data). Another alteration impacting the same acceptor site (c.1236-2A>G) has been identified in multiple individuals with ataxia telangiectasia (A-T) and has been shown to have a similar impact on splicing (Coutinho G et al. Am J Med Genet A, 2004 Apr;126A:33-40). Based on the supporting evidence, this alteration is interpreted as a disease-causing mutation. -

Familial cancer of breast

Pathogenic:1

Likely pathogenic, criteria provided, single submitter

clinical testing

Myriad Genetics, Inc.

Jan 12, 2024

This variant is considered likely pathogenic. This variant occurs within a consensus splice junction and is predicted to result in abnormal mRNA splicing of either an out-of-frame exon or an in-frame exon necessary for protein stability and/or normal function. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Pathogenic

0.27

BayesDel_noAF

Pathogenic

0.15

CADD

Pathogenic

DANN

Uncertain

0.99

Eigen

Pathogenic

1.1

Eigen_PC

Pathogenic

0.99

FATHMM_MKL

Pathogenic

0.99

GERP RS

5.8

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Pathogenic

1.0

dbscSNV1_RF

Pathogenic

0.93

SpliceAI score (max)

0.94

Details are displayed if max score is > 0.2

DS_AG_spliceai

0.73

Position offset: 9

DS_AL_spliceai

0.94

Position offset: 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