ATM p.Arg1921Ser

Variant names:

• chr11-108307985-G-T
• rs869312756
• NM_000051.4:c.5762+1G>T

Your query was ambiguous. Multiple possible variants found:

• chr11-108307985-A-T
• chr11-108307985-A-C
• chr11-108307983-AG-TC
• chr11-108307983-AGA-TCT
• chr11-108307983-AGA-TCC
• chr11-108307983-AGA-TCG

Variant summary

Our verdict is Pathogenic. The variant received 16 ACMG points: 16P and 0B. PVS1_Moderate PS3 PM2 PP5_Very_Strong

The NM_000051.4(ATM):​c.5762+1G>T variant causes a splice donor, intron change. The variant allele was found at a frequency of 0.000000688 in 1,453,792 control chromosomes in the GnomAD database, with no homozygous occurrence. 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 (★★). ClinVar reports functional evidence for this variant: "SCV000278229: RNA studies have demonstrated that this alteration results in abnormal splicing in the set of samples tested (Ambry internal data)." and additional evidence is available in ClinVar. The gene ATM is included in the ClinGen Criteria Specification Registry.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: ATM NM_000051.4 splice_donor, intron
• Scores: Splicing: ADA: 1.000
• Clinical Significance: Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:9
• Conservation: PhyloP100: 5.50
• Publications: 1 publications found

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 Gene-Disease associations (from GenCC):

• ATM-related cancer predisposition

  Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
• hereditary breast carcinoma

  Inheritance: AD Classification: DEFINITIVE Submitted by: Ambry Genetics
• ataxia telangiectasia

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Laboratory for Molecular Medicine, Genomics England PanelApp, G2P, Ambry Genetics, ClinGen, Labcorp Genetics (formerly Invitae)
• prostate cancer

  Inheritance: AD Classification: MODERATE Submitted by: Ambry Genetics
• sarcoma

  Inheritance: AD Classification: MODERATE Submitted by: Genomics England PanelApp
• gastric carcinoma

  Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics
• hereditary nonpolyposis colon cancer

  Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics

ACMG classification

Specifications for ATM are available in the ClinGen Criteria Specification Registry and recommended for reference when assigning criteria.

Our verdict: Pathogenic. The variant received 16 ACMG points.

• PVS1: Splicing +-2 bp (donor or acceptor) variant, product NOT destroyed by NMD, known LOF gene, truncates exone, which is 0.009595464 fraction of the gene. Cryptic splice site detected, with MaxEntScore 3.1, offset of 42, new splice context is: agtGTaact. Cryptic site results in inframe change. If cryptic site found is not functional and variant results in exon loss, it results in frameshift change.
• PS3: PS3 evidence extracted from ClinVar submissions: SCV000278229: RNA studies have demonstrated that this alteration results in abnormal splicing in the set of samples tested (Ambry internal data).; SCV001350787: External laboratory's RNA studies have reported that this variant results in abnormal splicing (ClinVar SCV000278229.6). PMID: 26845104; SCV000282996: Studies have shown that disruption of this splice site results in skipping of exon 38, and produces a non-functional protein and/or introduces a premature termination codon (internal data). PMID: 26845104
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 11-108307985-G-T is Pathogenic according to our data. Variant chr11-108307985-G-T is described in ClinVar as Pathogenic/Likely_pathogenic. ClinVar VariationId is 224519.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000051.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ATM	NM_000051.4	MANE Select	c.5762+1G>T		splice_donor intron	N/A	NP_000042.3
	ATM	NM_001351834.2		c.5762+1G>T		splice_donor intron	N/A	NP_001338763.1	Q13315

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ATM	ENST00000675843.1	MANE Select	c.5762+1G>T		splice_donor intron	N/A	ENSP00000501606.1	Q13315
	ATM	ENST00000452508.7	TSL:1	c.5762+1G>T		splice_donor intron	N/A	ENSP00000388058.2	Q13315
	ATM	ENST00000527805.6	TSL:1	n.*826+1G>T		splice_donor intron	N/A	ENSP00000435747.2	E9PIN0

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.88e-7 AC: 1 AN: 1453792 Hom.: 0 Cov.: 30 AF XY: 0.00000138 AC XY: 1 AN XY: 723812

African (AFR) AF: 0.00 AC: 0 AN: 33296

American (AMR) AF: 0.00 AC: 0 AN: 44692

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26096

East Asian (EAS) AF: 0.00 AC: 0 AN: 39584

South Asian (SAS) AF: 0.00 AC: 0 AN: 86076

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53320

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5752

European-Non Finnish (NFE) AF: 9.05e-7 AC: 1 AN: 1104850

Other (OTH) AF: 0.00 AC: 0 AN: 60126

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

ClinVar

ClinVar submissions

Significance: Pathogenic/Likely pathogenic

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
3	-	-	Hereditary cancer-predisposing syndrome (3)
2	-	-	Ataxia-telangiectasia syndrome (2)
2	-	-	Familial cancer of breast (2)
1	-	-	Breast-ovarian cancer, familial, susceptibility to, 1 (1)
1	-	-	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.42	D
BayesDel_noAF	Pathogenic	0.37
CADD	Pathogenic	33
DANN	Uncertain	0.99
Eigen	Pathogenic	1.2
Eigen_PC	Pathogenic	1.1
FATHMM_MKL	Pathogenic	0.97	D
PhyloP100		5.5
Mutation Taster		=0/100	disease causing (ClinVar)

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Pathogenic	1.0
dbscSNV1_RF	Pathogenic	0.93
SpliceAI score (max)		0.97		Details are displayed if max score is > 0.2
DS_DL_spliceai		0.97		Position offset: -1

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

dbSNP: rs869312756;

hg19: chr11-108178712;

COSMIC: COSV99590061;

COSMIC: COSV99590061;