8-53851999-T-C

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4_ModerateBS2

The NM_170587.4(RGS20):c.100T>C(p.Tyr34His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000118 in 1,614,082 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000072 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000055 ( 0 hom. )

Consequence

RGS20
NM_170587.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.260

Variant links:

Genes affected

RGS20 (HGNC:14600): (regulator of G protein signaling 20) The protein encoded by this gene belongs to the family of regulator of G protein signaling (RGS) proteins, which are regulatory and structural components of G protein-coupled receptor complexes. RGS proteins inhibit signal transduction by increasing the GTPase activity of G protein alpha subunits, thereby driving them into their inactive GDP-bound forms. This protein selectively binds to G(z)-alpha and G(alpha)-i2 subunits, and regulates their signaling activities. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Sep 2011]

RGS20 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -6 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.10646722).

BS2

High AC in GnomAd at 11 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
RGS20	NM_170587.4 linkuse as main transcript	c.100T>C	p.Tyr34His	missense_variant	1/6	ENST00000297313.8
RGS20	NM_001286673.2 linkuse as main transcript	c.100T>C	p.Tyr34His	missense_variant	1/5
RGS20	NM_001286674.2 linkuse as main transcript	c.-31T>C		5_prime_UTR_variant	1/3
RGS20	NM_001286675.2 linkuse as main transcript	c.-31T>C		5_prime_UTR_variant	1/4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	UniProt
RGS20	ENST00000297313.8 linkuse as main transcript	c.100T>C	p.Tyr34His	missense_variant	1/6	1	NM_170587.4	O76081-1
RGS20	ENST00000344277.10 linkuse as main transcript	c.100T>C	p.Tyr34His	missense_variant	1/5	1		O76081-2
RGS20	ENST00000523280.1 linkuse as main transcript	c.100T>C	p.Tyr34His	missense_variant, NMD_transcript_variant	1/3	1
RGS20	ENST00000517659.5 linkuse as main transcript	c.100T>C	p.Tyr34His	missense_variant, NMD_transcript_variant	1/4	1

Frequencies

GnomAD3 genomes

AF:

0.0000723

AC:

AN:

152226

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000265

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000199

AC:

AN:

251440

Hom.:

AF XY:

0.0000147

AC XY:

AN XY:

135894

show subpopulations

Gnomad AFR exome

AF:

0.000246

Gnomad AMR exome

AF:

0.0000289

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:

0.00000547

AC:

AN:

1461856

Hom.:

Cov.:

AF XY:

0.00000413

AC XY:

AN XY:

727230

show subpopulations

Gnomad4 AFR exome

AF:

0.000119

Gnomad4 AMR exome

AF:

0.0000447

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

AF:

0.0000723

AC:

AN:

152226

Hom.:

Cov.:

AF XY:

0.0000941

AC XY:

AN XY:

74376

show subpopulations

Gnomad4 AFR

AF:

0.000265

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000988

Hom.:

Bravo

AF:

0.000147

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000165

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Sep 16, 2021

The c.100T>C (p.Y34H) alteration is located in exon 1 (coding exon 1) of the RGS20 gene. This alteration results from a T to C substitution at nucleotide position 100, causing the tyrosine (Y) at amino acid position 34 to be replaced by a histidine (H). 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

0.12

BayesDel_addAF

Benign

-0.34

BayesDel_noAF

Benign

-0.41

Cadd

Benign

Dann

Uncertain

1.0

DEOGEN2

Benign

0.19

T;.

Eigen

Benign

-0.19

Eigen_PC

Benign

-0.34

FATHMM_MKL

Benign

0.080

LIST_S2

Benign

0.55

T;T

M_CAP

Benign

0.0089

MetaRNN

Benign

0.11

T;T

MetaSVM

Benign

-0.98

MutationAssessor

Benign

0.46

N;N

MutationTaster

Benign

1.0

N;N

PrimateAI

Benign

0.43

PROVEAN

Benign

-0.82

N;N

REVEL

Benign

0.093

Sift

Pathogenic

0.0

D;D

Sift4G

Pathogenic

0.0

D;T

Polyphen

0.84

P;P

Vest4

0.23

MVP

0.73

MPC

0.62

ClinPred

0.080

GERP RS

3.4

Varity_R

0.19

gMVP

0.14

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