rs757058064

Variant names:

• chr13-19703326-T-C
• rs757058064
• NM_001354909.2:c.1421A>G

Your query was ambiguous. Multiple possible variants found:

• chr13-19703326-T-C
• chr13-19703326-T-G

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2 BP4

The NM_001354909.2(PSPC1):​c.1421A>G​(p.Gln474Arg) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 34)
  • Exomes 𝑓: 0.0000021 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: PSPC1 NM_001354909.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.28
• Publications: 0 publications found

Genes affected

PSPC1 (HGNC:20320): (paraspeckle component 1) This gene encodes a nucleolar protein that localizes to punctate subnuclear structures that occur close to splicing speckles, known as paraspeckles. These paraspeckles are composed of RNA-protein structures that include a non-coding RNA, NEAT1/Men epsilon/beta, and the Drosophila Behavior Human Splicing family of proteins, which include the product of this gene and the P54NRB/NONO and PSF/SFPQ proteins. Paraspeckles may function in the control of gene expression via an RNA nuclear retention mechanism. The protein encoded by this gene is found in paraspeckles in transcriptionally active cells, but it localizes to unique cap structures at the nucleolar periphery when RNA polymerase II transcription is inhibited, or during telophase. Alternative splicing of this gene results in multiple transcript variants. A related pseudogene, which is also located on chromosome 13, has been identified. [provided by RefSeq, Aug 2011]

ACMG classification

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.38206992).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001354909.2. 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
	PSPC1	NM_001354909.2	MANE Select	c.1421A>G	p.Gln474Arg	missense	Exon 9 of 9	NP_001341838.1	Q8WXF1-1
	PSPC1	NM_001042414.4		c.1421A>G	p.Gln474Arg	missense	Exon 10 of 10	NP_001035879.1	Q8WXF1-1
	PSPC1	NM_001354908.2		c.1187+18127A>G		intron	N/A	NP_001341837.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PSPC1	ENST00000338910.9	TSL:1 MANE Select	c.1421A>G	p.Gln474Arg	missense	Exon 9 of 9	ENSP00000343966.4	Q8WXF1-1
	PSPC1	ENST00000471658.5	TSL:1	n.1159-25503A>G		intron	N/A	ENSP00000436038.1	Q8WXF1-2
	PSPC1	ENST00000946081.1		c.1730A>G	p.Gln577Arg	missense	Exon 9 of 9	ENSP00000616140.1

Frequencies

GnomAD3 genomes Cov.: 34

GnomAD2 exomes AF: 0.00000811 AC: 2 AN: 246638 AF XY: 0.00

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000179

Gnomad OTH exome AF: 0.00

GnomAD4 exome Data not reliable, filtered out with message: AS_VQSR AF: 0.00000206 AC: 3 AN: 1458420 Hom.: 0 Cov.: 32 AF XY: 0.00000138 AC XY: 1 AN XY: 725746

⚠️ 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: 33300

American (AMR) AF: 0.00 AC: 0 AN: 44652

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26086

East Asian (EAS) AF: 0.00 AC: 0 AN: 39686

South Asian (SAS) AF: 0.00 AC: 0 AN: 86100

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53382

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5754

European-Non Finnish (NFE) AF: 0.00000180 AC: 2 AN: 1109204

Other (OTH) AF: 0.0000166 AC: 1 AN: 60256

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000000000000945577), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome Cov.: 34

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.19
PhyloP100		4.3
Varity_R		0.12
gMVP		0.26
Mutation Taster		=62/38	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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

dbSNP: rs757058064; hg19: chr13-20277466;