Genetic Variant GPR174:p.Thr25Ile (chrX-79171081-C-T) – ACMG Classification: Likely_benign (-6 pts)

Variant summary

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

The NM_032553.3(GPR174):c.74C>T(p.Thr25Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000116 in 1,203,667 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 6 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000027 ( 0 hom., 2 hem., cov: 23)

Exomes 𝑓: 0.000010 ( 0 hom. 4 hem. )

Consequence

GPR174
NM_032553.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.86

Variant links:

Genes affected

GPR174 (HGNC:30245): (G protein-coupled receptor 174) This gene encodes a protein belonging to the G protein-coupled receptor superfamily. These proteins are characterized by the presence of seven alpha-helical transmembrane domains, and they activate or interact with various endogenous or exogenous ligands, including neurotransmitters, hormones, and odorant and taste substances. This family member is classified as an orphan receptor because the cognate ligand has not been identified. [provided by RefSeq, Sep 2011]

GPR174 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=0.18245351).

BS2

High Hemizygotes in GnomAd4 at 2 gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
GPR174	NM_032553.3 link	c.74C>T	p.Thr25Ile	missense_variant	Exon 3 of 3	ENST00000645147.2	NP_115942.1	Q9BXC1
GPR174	XM_047442579.1 link	c.74C>T	p.Thr25Ile	missense_variant	Exon 3 of 3		XP_047298535.1
GPR174	XM_047442580.1 link	c.74C>T	p.Thr25Ile	missense_variant	Exon 2 of 2		XP_047298536.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
GPR174	ENST00000645147.2 link	c.74C>T	p.Thr25Ile	missense_variant	Exon 3 of 3		NM_032553.3	ENSP00000494310.1		Q9BXC1

Frequencies

GnomAD3 genomes

AF:

0.0000267

AC:

AN:

112232

Hom.:

Cov.:

AF XY:

0.0000582

AC XY:

AN XY:

34392

show subpopulations

Gnomad AFR

AF:

0.0000972

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:

0.0000388

AC:

AN:

180520

Hom.:

AF XY:

0.00

AC XY:

AN XY:

65524

show subpopulations

Gnomad AFR exome

AF:

0.000229

Gnomad AMR exome

AF:

0.000147

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:

0.0000101

AC:

AN:

1091379

Hom.:

Cov.:

AF XY:

0.0000112

AC XY:

AN XY:

357063

show subpopulations

Gnomad4 AFR exome

AF:

0.000152

Gnomad4 AMR exome

AF:

0.000171

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

AF:

0.0000267

AC:

AN:

112288

Hom.:

Cov.:

AF XY:

0.0000580

AC XY:

AN XY:

34458

show subpopulations

Gnomad4 AFR

AF:

0.0000970

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

Bravo

AF:

0.0000793

ExAC

AF:

0.0000247

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Nov 12, 2021

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.74C>T (p.T25I) alteration is located in exon 1 (coding exon 1) of the GPR174 gene. This alteration results from a C to T substitution at nucleotide position 74, causing the threonine (T) at amino acid position 25 to be replaced by an isoleucine (I). 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

Uncertain

0.37

BayesDel_addAF

Benign

-0.37

BayesDel_noAF

Benign

-0.47

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.034

T;T

FATHMM_MKL

Uncertain

0.90

LIST_S2

Benign

0.82

.;T

M_CAP

Benign

0.0049

MetaRNN

Benign

0.18

T;T

MetaSVM

Benign

-0.99

MutationAssessor

Uncertain

2.1

M;M

PrimateAI

Uncertain

0.68

PROVEAN

Benign

-2.0

.;N

REVEL

Benign

0.13

Sift

Benign

0.084

.;T

Sift4G

Benign

0.58

.;T

Polyphen

0.48

P;P

Vest4

0.62

MVP

0.24

MPC

0.36

ClinPred

0.10

GERP RS

4.1

Varity_R

0.19

gMVP

0.69

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