Variant 1-37612888-C-T details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001242908.2(RSPO1):c.659G>A(p.Arg220Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000013 in 1,461,788 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R220W) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.000013 ( 0 hom. )

Consequence

RSPO1
NM_001242908.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.40

Variant links:

Genes affected

RSPO1 (HGNC:21679): (R-spondin 1) This gene encodes a secreted activator protein with two cysteine-rich, furin-like domains and one thrombospondin type 1 domain. The encoded protein is a ligand for leucine-rich repeat-containing G-protein coupled receptors (LGR proteins) and positively regulates the Wnt signaling pathway. In mice, the protein induces the rapid onset of crypt cell proliferation and increases intestinal epithelial healing, providing a protective effect against chemotherapy-induced adverse effects. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Apr 2014]

RSPO1 links:

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ACMG classification

Classification made for transcript

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=0.12086642).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
RSPO1	NM_001242908.2 linkuse as main transcript	c.659G>A	p.Arg220Gln	missense_variant	7/7	ENST00000356545.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
RSPO1	ENST00000356545.7 linkuse as main transcript	c.659G>A	p.Arg220Gln	missense_variant	7/7	1	NM_001242908.2	P1	Q2MKA7-1
RSPO1	ENST00000401068.1 linkuse as main transcript	c.659G>A	p.Arg220Gln	missense_variant	8/8	1		P1	Q2MKA7-1
RSPO1	ENST00000612451.4 linkuse as main transcript	c.470G>A	p.Arg157Gln	missense_variant	6/6	1			Q2MKA7-3
RSPO1	ENST00000615459.4 linkuse as main transcript	c.578G>A	p.Arg193Gln	missense_variant	7/7	2			Q2MKA7-2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000160

AC:

AN:

249454

Hom.:

AF XY:

0.0000222

AC XY:

AN XY:

135362

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000579

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000556

Gnomad SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000130

AC:

AN:

1461788

Hom.:

Cov.:

AF XY:

0.0000179

AC XY:

AN XY:

727212

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000447

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000756

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000989

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

Cov.:

Alfa

AF:

0.0000312

Hom.:

Bravo

AF:

0.00000378

ExAC

AF:

0.00000827

AC:

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

Dec 13, 2022

The c.659G>A (p.R220Q) alteration is located in exon 8 (coding exon 5) of the RSPO1 gene. This alteration results from a G to A substitution at nucleotide position 659, causing the arginine (R) at amino acid position 220 to be replaced by a glutamine (Q). 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

0.084

BayesDel_addAF

Benign

-0.12

BayesDel_noAF

Benign

-0.23

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.15

.;.;T;T

Eigen

Benign

-0.46

Eigen_PC

Benign

-0.30

FATHMM_MKL

Benign

0.56

LIST_S2

Benign

0.72

T;T;.;T

M_CAP

Benign

0.054

MetaRNN

Benign

0.12

T;T;T;T

MetaSVM

Uncertain

-0.27

MutationAssessor

Benign

1.4

.;.;L;L

MutationTaster

Benign

1.0

N;N;N;N;N;N

PrimateAI

Benign

0.33

PROVEAN

Benign

-1.5

.;.;N;N

REVEL

Benign

0.22

Sift

Benign

0.072

.;.;T;T

Sift4G

Benign

0.30

T;T;T;T

Polyphen

0.36

B;.;B;B

Vest4

0.10

MutPred

0.22

.;.;Loss of methylation at R219 (P = 0.1);Loss of methylation at R219 (P = 0.1);

MVP

0.85

MPC

0.31

ClinPred

0.35

GERP RS

5.0

Varity_R

0.065

gMVP

0.35

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