chr13-99255097-G-A

Variant names:

• chr13-99255097-G-A
• rs193218266
• NM_001098200.2:c.776C>T

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 0P and 2B. BP4_Moderate

The NM_001098200.2(GPR18):​c.776C>T​(p.Thr259Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00011 in 1,614,054 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: 𝑓 0.000059 (0 hom., cov: 32)
  • Exomes 𝑓: 0.00011 (0 hom.)
• Consequence: GPR18 NM_001098200.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.518
• Publications: 1 publications found

Genes affected

GPR18 (HGNC:4472): (G protein-coupled receptor 18) Predicted to enable G protein-coupled receptor activity. Predicted to be involved in positive regulation of Rho protein signal transduction and positive regulation of cytosolic calcium ion concentration involved in phospholipase C-activating G protein-coupled signaling pathway. Predicted to act upstream of or within T cell differentiation; negative regulation of leukocyte chemotaxis; and negative regulation of tumor necrosis factor production. Predicted to be located in plasma membrane. Predicted to be integral component of plasma membrane. [provided by Alliance of Genome Resources, Apr 2022]

UBAC2 (HGNC:20486): (UBA domain containing 2) Involved in negative regulation of canonical Wnt signaling pathway and negative regulation of retrograde protein transport, ER to cytosol. Acts upstream of or within protein localization to endoplasmic reticulum. Located in endoplasmic reticulum. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.091914326).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001098200.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	GPR18	NM_001098200.2	MANE Select	c.776C>T	p.Thr259Met	missense	Exon 2 of 2	NP_001091670.1	Q14330
	UBAC2	NM_001144072.2	MANE Select	c.389+10473G>A		intron	N/A	NP_001137544.1	Q8NBM4-1
	GPR18	NM_005292.4		c.776C>T	p.Thr259Met	missense	Exon 3 of 3	NP_005283.1	Q14330

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	GPR18	ENST00000397470.5	TSL:1 MANE Select	c.776C>T	p.Thr259Met	missense	Exon 2 of 2	ENSP00000380610.2	Q14330
	GPR18	ENST00000340807.3	TSL:1	c.776C>T	p.Thr259Met	missense	Exon 3 of 3	ENSP00000343428.3	Q14330
	GPR18	ENST00000397473.7	TSL:1	c.776C>T	p.Thr259Met	missense	Exon 3 of 3	ENSP00000380613.2	Q14330

Frequencies

GnomAD3 genomes AF: 0.0000592 AC: 9 AN: 152068 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000242

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: 0.000118

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000518 AC: 13 AN: 250964 AF XY: 0.0000811

Gnomad AFR exome AF: 0.0000615

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000971

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.000115 AC: 168 AN: 1461868 Hom.: 0 Cov.: 33 AF XY: 0.000124 AC XY: 90 AN XY: 727236

African (AFR) AF: 0.0000896 AC: 3 AN: 33478

American (AMR) AF: 0.0000224 AC: 1 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.0000232 AC: 2 AN: 86256

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53420

Middle Eastern (MID) AF: 0.000173 AC: 1 AN: 5768

European-Non Finnish (NFE) AF: 0.000139 AC: 155 AN: 1111990

Other (OTH) AF: 0.0000993 AC: 6 AN: 60396

GnomAD4 genome AF: 0.0000591 AC: 9 AN: 152186 Hom.: 0 Cov.: 32 AF XY: 0.0000538 AC XY: 4 AN XY: 74394

African (AFR) AF: 0.0000241 AC: 1 AN: 41508

American (AMR) AF: 0.00 AC: 0 AN: 15286

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.00 AC: 0 AN: 5176

South Asian (SAS) AF: 0.00 AC: 0 AN: 4820

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10594

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.000118 AC: 8 AN: 68016

Other (OTH) AF: 0.00 AC: 0 AN: 2110

Alfa AF: 0.000107 Hom.: 0

Bravo AF: 0.0000491

ESP6500AA AF: 0.00 AC: 0

ESP6500EA AF: 0.000349 AC: 3

ExAC AF: 0.0000412 AC: 5

EpiCase AF: 0.0000545

EpiControl AF: 0.00

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.12
BayesDel_addAF	Benign	-0.37	T
BayesDel_noAF	Benign	-0.58
CADD	Benign	11
DANN	Benign	0.96
DEOGEN2	Benign	0.021	T
Eigen	Benign	-0.64
Eigen_PC	Benign	-0.74
FATHMM_MKL	Benign	0.094	N
LIST_S2	Benign	0.60	T
M_CAP	Benign	0.011	T
MetaRNN	Benign	0.092	T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	0.90	L
PhyloP100		0.52
PrimateAI	Benign	0.25	T
PROVEAN	Benign	-0.75	N
REVEL	Benign	0.067
Sift	Benign	0.056	T
Sift4G	Benign	0.089	T
Polyphen		0.94	P
Vest4		0.23
MVP		0.47
MPC		0.21
ClinPred		0.030	T
GERP RS		2.2
Varity_R		0.018
gMVP		0.46
Mutation Taster		=97/3	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs193218266; hg19: chr13-99907351; COSMIC: COSV61621439; COSMIC: COSV61621439;