2-67397580-G-C

Position:

• chr2-67397580-G-C

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_019002.4(ETAA1):​c.132G>C​(p.Trp44Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000356 in 1,406,080 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000036 (0 hom.)
• Consequence: ETAA1 NM_019002.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.671

Genes affected

ETAA1 (HGNC:24648): (ETAA1 activator of ATR kinase) Enables protein serine/threonine kinase activator activity. Involved in several processes, including positive regulation of protein serine/threonine kinase activity; regulation of DNA damage checkpoint; and replication fork processing. Located in cytosol; nuclear replication fork; and nucleoplasm. [provided by Alliance of Genome Resources, Apr 2022]

LINC01829 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.07377347).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
ETAA1	NM_019002.4	c.132G>C	p.Trp44Cys	missense_variant	1/6	ENST00000272342.6	NP_061875.2
ETAA1	XM_017004376.2	c.132G>C	p.Trp44Cys	missense_variant	1/7		XP_016859865.1
ETAA1	XM_017004377.2	c.132G>C	p.Trp44Cys	missense_variant	1/7		XP_016859866.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ETAA1	ENST00000272342.6	c.132G>C	p.Trp44Cys	missense_variant	1/6	1	NM_019002.4	ENSP00000272342.5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000356 AC: 5 AN: 1406080 Hom.: 0 Cov.: 31 AF XY: 0.00000576 AC XY: 4 AN XY: 694324

Gnomad4 AFR exome AF: 0.000125

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.0000172

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Oct 16, 2024

The c.132G>C (p.W44C) alteration is located in exon 1 (coding exon 1) of the ETAA1 gene. This alteration results from a G to C substitution at nucleotide position 132, causing the tryptophan (W) at amino acid position 44 to be replaced by a cysteine (C). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.24
BayesDel_addAF	Benign	-0.24	T
BayesDel_noAF	Benign	-0.59
CADD	Benign	15
DANN	Benign	0.70
DEOGEN2	Benign	0.0031	T;.
Eigen	Benign	-0.52
Eigen_PC	Benign	-0.63
FATHMM_MKL	Benign	0.070	N
LIST_S2	Benign	0.58	T;T
M_CAP	Benign	0.0036	T
MetaRNN	Benign	0.074	T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.69	N;.
PrimateAI	Uncertain	0.55	T
PROVEAN	Benign	-1.2	N;.
REVEL	Benign	0.015
Sift	Benign	0.034	D;.
Sift4G	Benign	0.079	T;.
Polyphen		0.77	P;.
Vest4		0.28
MutPred		0.24		Gain of helix (P = 0.0143);Gain of helix (P = 0.0143);
MVP		0.043
MPC		0.24
ClinPred		0.20	T
GERP RS		2.8
Varity_R		0.13
gMVP		0.032

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.060		Details are displayed if max score is > 0.2

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

Publications

LitVar

Other links and lift over

dbSNP: rs1675910571; hg19: chr2-67624712;