1-192578275-A-G

Position:

• chr1-192578275-A-G

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_002922.4(RGS1):​c.334A>G​(p.Ile112Val) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 32)
• Consequence: RGS1 NM_002922.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.49

Genes affected

RGS1 (HGNC:9991): (regulator of G protein signaling 1) This gene encodes a member of the regulator of G-protein signalling family. This protein is located on the cytosolic side of the plasma membrane and contains a conserved, 120 amino acid motif called the RGS domain. The protein attenuates the signalling activity of G-proteins by binding to activated, GTP-bound G alpha subunits and acting as a GTPase activating protein (GAP), increasing the rate of conversion of the GTP to GDP. This hydrolysis allows the G alpha subunits to bind G beta/gamma subunit heterodimers, forming inactive G-protein heterotrimers, thereby terminating the signal. [provided by RefSeq, Jul 2008]

RGS1 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
RGS1	NM_002922.4	c.334A>G	p.Ile112Val	missense_variant	4/5	ENST00000367459.8	NP_002913.3
LOC105371664	XR_002958418.2	n.288-11059T>C		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
RGS1	ENST00000367459.8	c.334A>G	p.Ile112Val	missense_variant	4/5	1	NM_002922.4	ENSP00000356429.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

Bravo AF: 0.0000113

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Dec 04, 2024

The c.334A>G (p.I112V) alteration is located in exon 4 (coding exon 4) of the RGS1 gene. This alteration results from a A to G substitution at nucleotide position 334, causing the isoleucine (I) at amino acid position 112 to be replaced by a valine (V). 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	0.13
BayesDel_addAF	Benign	-0.021	T
BayesDel_noAF	Benign	-0.27
CADD	Uncertain	24
DANN	Benign	0.96
DEOGEN2	Benign	0.27	T;.
Eigen	Pathogenic	0.72
Eigen_PC	Pathogenic	0.74
FATHMM_MKL	Uncertain	0.94	D
LIST_S2	Benign	0.74	T;T
M_CAP	Benign	0.0062	T
MetaRNN	Uncertain	0.52	D;D
MetaSVM	Benign	-0.84	T
MutationAssessor	Benign	1.4	L;L
PrimateAI	Benign	0.45	T
PROVEAN	Benign	-0.74	N;.
REVEL	Benign	0.17
Sift	Uncertain	0.0040	D;.
Sift4G	Benign	0.16	T;T
Polyphen		0.92	P;P
Vest4		0.53
MutPred		0.66		Gain of disorder (P = 0.1382);Gain of disorder (P = 0.1382);
MVP		0.35
MPC		0.25
ClinPred		0.91	D
GERP RS		5.9
Varity_R		0.44
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

Other links and lift over

dbSNP: rs1662098657; hg19: chr1-192547405;