Variant chr20-964098-C-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_001029871.4(RSPO4):c.432G>T(p.Trp144Cys) variant causes a missense change. The variant allele was found at a frequency of 0.000000685 in 1,460,768 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

RSPO4
NM_001029871.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.50

Variant links:

Genes affected

RSPO4 (HGNC:16175): (R-spondin 4) This gene encodes a member of the R-spondin family of proteins that share a common domain organization consisting of a signal peptide, cysteine-rich/furin-like domain, thrombospondin domain and a C-terminal basic region. The encoded protein may be involved in activation of Wnt/beta-catenin signaling pathways. Mutations in this gene are associated with anonychia congenital. Alternate splicing results in multiple transcript variants.[provided by RefSeq, Sep 2009]

RSPO4 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.926

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
RSPO4	NM_001029871.4 linkuse as main transcript	c.432G>T	p.Trp144Cys	missense_variant	4/5	ENST00000217260.9	NP_001025042.2
RSPO4	XM_017027839.2 linkuse as main transcript	c.432G>T	p.Trp144Cys	missense_variant	4/4		XP_016883328.1
RSPO4	NM_001040007.3 linkuse as main transcript	c.409+3076G>T		intron_variant			NP_001035096.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
RSPO4	ENST00000217260.9 linkuse as main transcript	c.432G>T	p.Trp144Cys	missense_variant	4/5	1	NM_001029871.4	ENSP00000217260	P1	Q2I0M5-1
RSPO4	ENST00000400634.2 linkuse as main transcript	c.409+3076G>T		intron_variant		1		ENSP00000383475		Q2I0M5-2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.85e-7

AC:

AN:

1460768

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726648

show subpopulations

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:

0.00

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Sep 14, 2022

The c.432G>T (p.W144C) alteration is located in exon 4 (coding exon 4) of the RSPO4 gene. This alteration results from a G to T substitution at nucleotide position 432, causing the tryptophan (W) at amino acid position 144 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

Pathogenic

1.0

BayesDel_addAF

Pathogenic

0.24

BayesDel_noAF

Uncertain

0.10

CADD

Pathogenic

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.57

Eigen

Uncertain

0.57

Eigen_PC

Uncertain

0.44

FATHMM_MKL

Uncertain

0.97

LIST_S2

Uncertain

0.86

M_CAP

Pathogenic

0.61

MetaRNN

Pathogenic

0.93

MetaSVM

Pathogenic

0.80

MutationAssessor

Pathogenic

3.9

MutationTaster

Benign

1.0

D;D

PrimateAI

Uncertain

0.54

PROVEAN

Pathogenic

-12

REVEL

Pathogenic

0.65

Sift

Uncertain

0.0020

Sift4G

Uncertain

0.0080

Polyphen

0.99

Vest4

0.81

MutPred

0.63

Gain of catalytic residue at P143 (P = 0.0072);

MVP

0.81

MPC

0.42

ClinPred

1.0

GERP RS

4.3

Varity_R

0.66

gMVP

0.72

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

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over