Variant 1-37612886-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.661G>A(p.Glu221Lys) variant causes a missense change. The variant allele was found at a frequency of 0.00000205 in 1,461,778 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000021 ( 0 hom. )

Consequence

RSPO1
NM_001242908.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.48

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:

Genome browser will be placed here

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=0.22312805).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
RSPO1	NM_001242908.2 linkuse as main transcript	c.661G>A	p.Glu221Lys	missense_variant	7/7	ENST00000356545.7	NP_001229837.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
RSPO1	ENST00000356545.7 linkuse as main transcript	c.661G>A	p.Glu221Lys	missense_variant	7/7	1	NM_001242908.2	ENSP00000348944	P1	Q2MKA7-1
RSPO1	ENST00000401068.1 linkuse as main transcript	c.661G>A	p.Glu221Lys	missense_variant	8/8	1		ENSP00000383846	P1	Q2MKA7-1
RSPO1	ENST00000612451.4 linkuse as main transcript	c.472G>A	p.Glu158Lys	missense_variant	6/6	1		ENSP00000479832		Q2MKA7-3
RSPO1	ENST00000615459.4 linkuse as main transcript	c.580G>A	p.Glu194Lys	missense_variant	7/7	2		ENSP00000481178		Q2MKA7-2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000120

AC:

AN:

249434

Hom.:

AF XY:

0.00000739

AC XY:

AN XY:

135350

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000869

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000205

AC:

AN:

1461778

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727210

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000671

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:

0.00

GnomAD4 genome

Cov.:

Bravo

AF:

0.00000756

ExAC

AF:

0.0000248

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

May 13, 2024

The c.661G>A (p.E221K) 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 661, causing the glutamic acid (E) at amino acid position 221 to be replaced by a lysine (K). 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

0.14

BayesDel_addAF

Benign

-0.11

BayesDel_noAF

Benign

-0.20

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.087

.;.;T;T

Eigen

Benign

-0.016

Eigen_PC

Benign

0.12

FATHMM_MKL

Uncertain

0.90

LIST_S2

Uncertain

0.88

D;T;.;D

M_CAP

Benign

0.050

MetaRNN

Benign

0.22

T;T;T;T

MetaSVM

Benign

-0.31

MutationAssessor

Benign

0.97

.;.;L;L

MutationTaster

Benign

1.0

D;D;D;D;D;D

PrimateAI

Uncertain

0.53

PROVEAN

Benign

-0.44

.;.;N;N

REVEL

Uncertain

0.36

Sift

Benign

0.53

.;.;T;T

Sift4G

Uncertain

0.019

D;D;D;D

Polyphen

0.68

P;.;P;P

Vest4

0.21

MutPred

0.27

.;.;Gain of methylation at E221 (P = 0.0144);Gain of methylation at E221 (P = 0.0144);

MVP

0.72

MPC

0.31

ClinPred

0.40

GERP RS

5.9

Varity_R

0.22

gMVP

0.28

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