22-29282488-G-C

Position:

• chr22-29282488-G-C

Variant summary

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

The NM_005243.4(EWSR1):​c.512G>C​(p.Ser171Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000705 in 1,418,440 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 7.1e-7 (0 hom.)
• Consequence: EWSR1 NM_005243.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.21

Genes affected

EWSR1 (HGNC:3508): (EWS RNA binding protein 1) This gene encodes a multifunctional protein that is involved in various cellular processes, including gene expression, cell signaling, and RNA processing and transport. The protein includes an N-terminal transcriptional activation domain and a C-terminal RNA-binding domain. Chromosomal translocations between this gene and various genes encoding transcription factors result in the production of chimeric proteins that are involved in tumorigenesis. These chimeric proteins usually consist of the N-terminal transcriptional activation domain of this protein fused to the C-terminal DNA-binding domain of the transcription factor protein. Mutations in this gene, specifically a t(11;22)(q24;q12) translocation, are known to cause Ewing sarcoma as well as neuroectodermal and various other tumors. Alternative splicing of this gene results in multiple transcript variants. Related pseudogenes have been identified on chromosomes 1 and 14. [provided by RefSeq, Jul 2009]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

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

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
EWSR1	NM_005243.4	c.512G>C	p.Ser171Thr	missense_variant	6/17	ENST00000397938.7	NP_005234.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
EWSR1	ENST00000397938.7	c.512G>C	p.Ser171Thr	missense_variant	6/17	1	NM_005243.4	ENSP00000381031	P4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 7.05e-7 AC: 1 AN: 1418440 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 704540

Gnomad4 AFR exome AF: 0.00

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: 9.13e-7

Gnomad4 OTH exome AF: 0.00

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 13, 2023

The c.530G>C (p.S177T) alteration is located in exon 7 (coding exon 7) of the EWSR1 gene. This alteration results from a G to C substitution at nucleotide position 530, causing the serine (S) at amino acid position 177 to be replaced by a threonine (T). 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	0.13
BayesDel_addAF	Pathogenic	0.23	D
BayesDel_noAF	Uncertain	0.090
CADD	Uncertain	26
DANN	Benign	0.97
DEOGEN2	Benign	0.032	T;T;T;.;T;T;T;.;.
Eigen	Uncertain	0.63
Eigen_PC	Uncertain	0.65
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Benign	0.82	T;D;D;D;D;D;D;D;D
M_CAP	Uncertain	0.20	D
MetaRNN	Uncertain	0.50	D;D;D;D;D;D;D;D;D
MetaSVM	Pathogenic	0.99	D
MutationAssessor	Benign	1.6	.;.;L;L;.;.;.;.;L
MutationTaster	Benign	1.0	D;D;D;D;D;D;D
PrimateAI	Uncertain	0.64	T
PROVEAN	Benign	-2.0	N;.;N;N;N;N;N;N;N
REVEL	Uncertain	0.50
Sift	Uncertain	0.0070	D;.;D;D;D;T;D;D;D
Sift4G	Uncertain	0.050	T;D;T;T;T;T;T;T;D
Polyphen		0.81	.;.;P;.;.;.;.;.;.
Vest4		0.47
MutPred		0.22		Loss of phosphorylation at S168 (P = 0.1501);.;Loss of phosphorylation at S168 (P = 0.1501);Loss of phosphorylation at S168 (P = 0.1501);.;.;Loss of phosphorylation at S168 (P = 0.1501);.;Loss of phosphorylation at S168 (P = 0.1501);
MVP		0.86
MPC		1.3
ClinPred		0.84	D
GERP RS		5.2
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.2
Varity_R		0.27
gMVP		0.42

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.030		Details are displayed if max score is > 0.2

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

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr22-29678477;