11-108250683-CTTTTTTT-CTTTTTTTTTTTTT

Variant names:

• chr11-108250683-C-CTTTTTT
• rs34325032
• NM_000051.4:c.1236-8_1236-3dupTTTTTT

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PVS1_Moderate

The NM_000051.4(ATM):​c.1236-8_1236-3dupTTTTTT variant causes a splice acceptor, intron change involving the alteration of a non-conserved nucleotide. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.0000070 (0 hom., cov: 0)
• Consequence: ATM NM_000051.4 splice_acceptor, intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.510
• Publications: 10 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):

• hereditary breast carcinoma

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

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

  Inheritance: AD Classification: MODERATE, LIMITED Submitted by: ClinGen, Ambry Genetics
• prostate cancer

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

  Inheritance: AD Classification: MODERATE Submitted by: Genomics England PanelApp
• familial ovarian cancer

  Inheritance: AD Classification: LIMITED Submitted by: ClinGen
• gastric carcinoma

  Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PVS1: Splicing +-2 bp (donor or acceptor) variant, product NOT destroyed by NMD, known LOF gene, truncates exone, which is 0.040562645 fraction of the gene. Cryptic splice site detected, with MaxEntScore 12, offset of 0 (no position change), new splice context is: ttttttttttttttttttAGgct. Cryptic site results in inframe change. If cryptic site found is not functional and variant results in exon loss, it results in inframe change.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ATM	NM_000051.4	c.1236-8_1236-3dupTTTTTT		splice_acceptor_variant, intron_variant	Intron 9 of 62	ENST00000675843.1	NP_000042.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ATM	ENST00000675843.1	c.1236-18_1236-17insTTTTTT		intron_variant	Intron 9 of 62		NM_000051.4	ENSP00000501606.1

Frequencies

GnomAD3 genomes AF: 0.00000703 AC: 1 AN: 142268 Hom.: 0 Cov.: 0

Gnomad AFR AF: 0.00

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: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000153

Gnomad OTH AF: 0.00

GnomAD4 exome Cov.: 0

GnomAD4 genome AF: 0.00000703 AC: 1 AN: 142268 Hom.: 0 Cov.: 0 AF XY: 0.0000146 AC XY: 1 AN XY: 68534

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00 AC: 0 AN: 38538

American (AMR) AF: 0.00 AC: 0 AN: 14260

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3394

East Asian (EAS) AF: 0.00 AC: 0 AN: 4906

South Asian (SAS) AF: 0.00 AC: 0 AN: 4530

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 7978

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 300

European-Non Finnish (NFE) AF: 0.0000153 AC: 1 AN: 65526

Other (OTH) AF: 0.00 AC: 0 AN: 1946

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
PhyloP100		-0.51

Splicing

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

Other links and lift over

dbSNP: rs34325032; hg19: chr11-108121410;