13-113667528-G-C

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_002929.3(GRK1):c.142G>C(p.Glu48Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 14/19 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)
• Consequence: GRK1 NM_002929.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.50

Genes affected

GRK1 (HGNC:10013): (G protein-coupled receptor kinase 1) This gene encodes a member of the guanine nucleotide-binding protein (G protein)-coupled receptor kinase subfamily of the Ser/Thr protein kinase family. The protein phosphorylates rhodopsin and initiates its deactivation. Defects in GRK1 are known to cause Oguchi disease 2 (also known as stationary night blindness Oguchi type-2). [provided by RefSeq, Jul 2008]

ACMG classification

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=0.19038022).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
GRK1	NM_002929.3	c.142G>C	p.Glu48Gln	missense_variant	1/7	ENST00000335678.7
GRK1	XM_047430493.1	c.-6-2159G>C		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
GRK1	ENST00000335678.7	c.142G>C	p.Glu48Gln	missense_variant	1/7	1	NM_002929.3	P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 29

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Inborn genetic diseases Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Sep 22, 2023

The c.142G>C (p.E48Q) alteration is located in exon 1 (coding exon 1) of the GRK1 gene. This alteration results from a G to C substitution at nucleotide position 142, causing the glutamic acid (E) at amino acid position 48 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	0.098
BayesDel_addAF	Benign	-0.24	T
BayesDel_noAF	Benign	-0.59
Cadd	Benign	19
Dann	Benign	0.97
DEOGEN2	Benign	0.20	T
Eigen	Benign	-0.35
Eigen_PC	Benign	-0.31
FATHMM_MKL	Pathogenic	0.97	D
LIST_S2	Benign	0.58	T
M_CAP	Benign	0.0025	T
MetaRNN	Benign	0.19	T
MetaSVM	Benign	-0.94	T
MutationTaster	Benign	1.0	D
PrimateAI	Benign	0.41	T
PROVEAN	Benign	-1.3	N
REVEL	Benign	0.082
Sift	Benign	0.13	T
Sift4G	Benign	0.24	T
Polyphen		0.023	B
Vest4		0.24
MutPred		0.20		Loss of ubiquitination at K46 (P = 0.0236);
MVP		0.58
MPC		0.078
ClinPred		0.86	D
GERP RS		3.3
Varity_R		0.16
gMVP		0.45

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr13-114321843;