chr3-142562456-C-A

Variant names:

• chr3-142562456-C-A
• rs28897764
• NM_001184.4:c.946G>T

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_001184.4(ATR):​c.946G>T​(p.Val316Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V316I) has been classified as Benign.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: ATR NM_001184.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.07
• Publications: 0 publications found

Genes affected

ATR (HGNC:882): (ATR serine/threonine kinase) The protein encoded by this gene is a serine/threonine kinase and DNA damage sensor, activating cell cycle checkpoint signaling upon DNA stress. The encoded protein can phosphorylate and activate several proteins involved in the inhibition of DNA replication and mitosis, and can promote DNA repair, recombination, and apoptosis. This protein is also important for fragile site stability and centrosome duplication. Defects in this gene are a cause of Seckel syndrome 1. [provided by RefSeq, Aug 2017]

ATR Gene-Disease associations (from GenCC):

• Seckel syndrome 1

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Illumina, G2P, Ambry Genetics
• sarcoma

  Inheritance: AD Classification: MODERATE Submitted by: Genomics England PanelApp
• familial cutaneous telangiectasia and oropharyngeal predisposition cancer syndrome

  Inheritance: Unknown, AD Classification: MODERATE, SUPPORTIVE, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, Genomics England PanelApp
• Seckel syndrome

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• familial prostate carcinoma

  Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics

ACMG classification

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

• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001184.4. 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
	ATR	NM_001184.4	MANE Select	c.946G>T	p.Val316Phe	missense	Exon 4 of 47	NP_001175.2
	ATR	NM_001354579.2		c.946G>T	p.Val316Phe	missense	Exon 4 of 46	NP_001341508.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ATR	ENST00000350721.9	TSL:1 MANE Select	c.946G>T	p.Val316Phe	missense	Exon 4 of 47	ENSP00000343741.4
	ATR	ENST00000936442.1		c.946G>T	p.Val316Phe	missense	Exon 4 of 46	ENSP00000606501.1
	ATR	ENST00000661310.1		c.946G>T	p.Val316Phe	missense	Exon 4 of 46	ENSP00000499589.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Data not reliable, filtered out with message: AS_VQSR AF: 6.84e-7 AC: 1 AN: 1461798 Hom.: 0 Cov.: 30 AF XY: 0.00 AC XY: 0 AN XY: 727198

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

African (AFR) AF: 0.00 AC: 0 AN: 33476

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26130

East Asian (EAS) AF: 0.00 AC: 0 AN: 39690

South Asian (SAS) AF: 0.00 AC: 0 AN: 86254

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53418

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 8.99e-7 AC: 1 AN: 1111944

Other (OTH) AF: 0.00 AC: 0 AN: 60394

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.34
BayesDel_addAF	Benign	-0.049	T
BayesDel_noAF	Benign	-0.31
CADD	Benign	22
DANN	Uncertain	0.99
DEOGEN2	Benign	0.12	T
Eigen	Uncertain	0.38
Eigen_PC	Uncertain	0.42
FATHMM_MKL	Uncertain	0.93	D
LIST_S2	Uncertain	0.89	D
M_CAP	Benign	0.047	D
MetaRNN	Uncertain	0.62	D
MetaSVM	Benign	-0.49	T
MutationAssessor	Uncertain	2.0	M
PhyloP100		2.1
PrimateAI	Uncertain	0.51	T
PROVEAN	Benign	-1.1	N
REVEL	Benign	0.099
Sift	Uncertain	0.0070	D
Sift4G	Benign	0.066	T
Polyphen		0.96	D
Vest4		0.72
MutPred		0.32		Loss of catalytic residue at V316 (P = 0.0068)
MVP		0.45
MPC		0.66
ClinPred		0.88	D
GERP RS		4.4
Varity_R		0.24
gMVP		0.65
Mutation Taster		=69/31	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

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

Other links and lift over

dbSNP: rs28897764; hg19: chr3-142281298;