chr11-108315883-GGA-CGT

Variant names:

• chr11-108315883-GGA-CGT
• NM_000051.4:c.6067_6069delGGAinsCGT
• ATM p.Gly2023Arg

GermlineCancer (beta)

Variant summary

Our verdict is Uncertain significance.

+1 Uncertain · Cold

-7

-6

-1

0

+5

+6

+9

+10

BenignB

Likely BenignLB

UncertainVUS

Likely PathogenicLP

PathogenicP

The variant received 1 classification points (ACGS-UK Somatic Oncogenicity v2025). O3_ModerateB2_Supporting

The NM_000051.4(ATM):c.6067_6069delGGAinsCGT (p.Gly2023Arg) variant causes a missense change. The gene ATM is a tumor suppressor gene (CancerMine: 26 TSG, 31 oncogene, 24 driver citations). The gene ATM is a known oncogene (CancerMine: 26 TSG, 31 oncogene, 24 driver citations). The gene ATM is a cancer driver gene (CancerMine: 26 TSG, 31 oncogene, 24 driver citations). Note: allele frequency estimates from gnomAD may be inaccurate for this variant type (MNP or indel longer than 3 bp) due to technology limitations. The variant is absent from the gnomAD population database at sites with sufficient sequencing coverage. The affected nucleotide is highly conserved across species (PhyloP 100-way vertebrate score: 9.47). No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Other variants at the same amino acid position have been reported in ClinVar (not pathogenic): p.G2023E: Uncertain_significance (ClinVar VariationId 453610, 2 stars); p.G2023= (synonymous): Likely_benign (ClinVar VariationId 1751358, 1 star); p.G2023R: Conflicting_classifications_of_pathogenicity (ClinVar VariationId 127416); p.G2023R: Benign (ClinVar VariationId 2127852, 1 star); p.G2023V: Uncertain_significance (ClinVar VariationId 3801988, 1 star) This exact variant is curated in the UniProt human variants database as Uncertain Significance, associated with Ataxia telangiectasia (AT).

• Frequency: Genomes: not found (cov: 32)
• Consequence: ATM NM_000051.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 9.47
• Publications: 0 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: Natera, Ambry Genetics
• ataxia telangiectasia

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Genomics England PanelApp, Laboratory for Molecular Medicine, ClinGen, G2P, Orphanet, Natera, PanelApp Australia, Ambry Genetics, 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

C11orf65 (HGNC:28519): (chromosome 11 open reading frame 65) Predicted to be involved in negative regulation of mitochondrial fission and obsolete negative regulation of protein targeting to mitochondrion. Predicted to be located in cytosol and mitochondrial outer membrane. [provided by Alliance of Genome Resources, Jun 2026]

Classification according to ACGS-UK Somatic Oncogenicity v2025

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

Classification was made for transcript:

Our verdict: Uncertain_significance. The variant received 1 points.

Apply	Criterion Code & Title / Strength	Strength	Rationale / Clinical Context
	O3Absent or very rare in population		Absent or extremely rare in gnomAD (AC ≤ 2) — O3 moderate; GnomAD: AF = absent, AC = 0 — absent/extremely rare (O3 moderate [+2])
	B2Does not fit gene mode of action		Activating variant in tumor suppressor gene + same AA change classified germline Benign/Likely Benign — supporting benign evidence (B2, no cancer-type context); Activating variant in tumor suppressor gene + same AA change classified germline Benign/Likely Benign — supporting benign evidence (B2, no cancer-type context)

Variant Effect in Transcripts

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

RefSeq Transcripts

Sel.	Gene / Transcript	Tags	HGVSc / HGVSp	Effect	Exon rank	Protein / UniProt
	ATM NM_000051.4	MANE Select	c.6067_6069delGGAinsCGT p.Gly2023Arg	missense	N/A	Prot: NP_000042.3
	ATM NM_001351834.2		c.6067_6069delGGAinsCGT p.Gly2023Arg	missense	N/A	Prot: NP_001338763.1 UniProt:
	C11orf65 NM_001330368.2		c.641-6814_641-6812delTCCinsACG	intron	Intron 6 of 6	Prot: NP_001317297.1

ATM NM_000051.4

MANE Select

HGVSc / HGVSpc.6067_6069delGGAinsCGTp.Gly2023Arg

Exon rankN/A

missense

Prot: NP_000042.3

ATM NM_001351834.2

HGVSc / HGVSpc.6067_6069delGGAinsCGTp.Gly2023Arg

Exon rankN/A

missense

Prot: NP_001338763.1UniProt: Q13315

C11orf65 NM_001330368.2

HGVSc / HGVSpc.641-6814_641-6812delTCCinsACG

Exon rankIntron 6 of 6

intron

Prot: NP_001317297.1

Ensembl Transcripts

Sel.	Gene / Transcript	Tags	HGVSc / HGVSp	Effect	Exon rank	Protein / UniProt
	ATM ENST00000675843.1	MANE Select	c.6067_6069delGGAinsCGT p.Gly2023Arg	missense	N/A	Prot: ENSP00000501606.1 UniProt:
	ATM ENST00000452508.7	TSL:1	c.6067_6069delGGAinsCGT p.Gly2023Arg	missense	N/A	Prot: ENSP00000388058.2 UniProt:
	ATM ENST00000527805.6	TSL:1	n.*1131_*1133delGGAinsCGT	3_prime_UTR	Exon 39 of 61	Prot: ENSP00000435747.2 UniProt:

ATM ENST00000675843.1

MANE Select

HGVSc / HGVSpc.6067_6069delGGAinsCGTp.Gly2023Arg

Exon rankN/A

missense

Prot: ENSP00000501606.1UniProt: Q13315

ATM ENST00000452508.7

TSL:1

HGVSc / HGVSpc.6067_6069delGGAinsCGTp.Gly2023Arg

Exon rankN/A

missense

Prot: ENSP00000388058.2UniProt: Q13315

ATM ENST00000527805.6

TSL:1

HGVSc / HGVSpn.*1131_*1133delGGAinsCGT

Exon rankExon 39 of 61

3_prime_UTR

Prot: ENSP00000435747.2UniProt: E9PIN0

Frequencies

Allele frequencies (AF), counts (AC/AN), homozygotes and coverage

Common (AF > 0.05 / Hom > 5)

Rare (AF ≤ 0.0001 / Hom ≤ 1)

Source / population	AF	AC	Hom	AN	Coverage
Global population databases 2 sources Large-scale international reference populations
GnomAD3 genomes	AF:	AC:	Hom:	AN:	Cov:32
GnomAD4 genome	AF:	AC:	Hom:	AN:	Cov:32

Showing 2 sources

Tested, but no data found:GnomAD4 exomeIf GnomAD4 is missing, the position is probably not covered by the project.

ClinVar

Not reported in ClinVar

Computational Scores

Algorithm	Calibrated pred.	Score	Prediction
PhyloP100	Pathogenic	9.5

Showing 1 of 1 scores

Splicing Scores

No splicing scores have been computed for this variant.

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.

MaveDB functional evidence

MaveDB is a public repository of laboratory assays that test the effect of thousands of variants at once — treat this as supporting research data and interpret it with great caution; it is not a clinical classification.

No MaveDB functional evidence found for this variant.

Other links and lift over

hg19: chr11-108186610;

ACMG debug oncogenicity

ACGS debug oncogenicity

ACMG debug germline

Submit to ClinVar