3-71754813-T-G

Position:

• chr3-71754813-T-G

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PP3

The NM_018971.3(GPR27):​c.764T>G​(p.Leu255Arg) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: GPR27 NM_018971.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.43

Genes affected

GPR27 (HGNC:4482): (G protein-coupled receptor 27) GPR27 is a member of the G protein-coupled receptors (GPCRs), a large family of receptors that have a similar structure characterized by 7 transmembrane domains. Activation of GPCRs by extracellular stimuli such as neurotransmitters, hormones, or light induces an intracellular signaling cascade mediated by heterotrimeric GTP-binding proteins, or G proteins.[supplied by OMIM, May 2010]

EIF4E3 (HGNC:31837): (eukaryotic translation initiation factor 4E family member 3) EIF4E3 belongs to the EIF4E family of translational initiation factors that interact with the 5-prime cap structure of mRNA and recruit mRNA to the ribosome (Joshi et al., 2004 [PubMed 15153109]).[supplied by OMIM, Mar 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.783

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
GPR27	NM_018971.3	c.764T>G	p.Leu255Arg	missense_variant	1/1	ENST00000304411.3	NP_061844.1
EIF4E3	NM_173359.5			upstream_gene_variant			NP_775495.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
GPR27	ENST00000304411.3	c.764T>G	p.Leu255Arg	missense_variant	1/1		NM_018971.3	ENSP00000303149	P1
EIF4E3	ENST00000421769.6			upstream_gene_variant		1		ENSP00000411762

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

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

Mar 21, 2023

The c.764T>G (p.L255R) alteration is located in exon 1 (coding exon 1) of the GPR27 gene. This alteration results from a T to G substitution at nucleotide position 764, causing the leucine (L) at amino acid position 255 to be replaced by an arginine (R). 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	Pathogenic	0.60
BayesDel_addAF	Benign	-0.014	T
BayesDel_noAF	Benign	-0.26
CADD	Uncertain	24
DANN	Uncertain	0.99
DEOGEN2	Benign	0.032	T
Eigen	Benign	0.00089
Eigen_PC	Benign	-0.099
FATHMM_MKL	Uncertain	0.90	D
LIST_S2	Pathogenic	0.99	D
M_CAP	Pathogenic	0.59	D
MetaRNN	Pathogenic	0.78	D
MetaSVM	Benign	-0.61	T
MutationAssessor	Uncertain	2.4	M
MutationTaster	Benign	1.0	D
PrimateAI	Pathogenic	0.93	D
PROVEAN	Benign	-1.9	N
REVEL	Uncertain	0.40
Sift	Uncertain	0.0030	D
Sift4G	Benign	0.070	T
Polyphen		1.0	D
Vest4		0.61
MutPred		0.69		Gain of MoRF binding (P = 0.004);
MVP		0.043
ClinPred		0.85	D
GERP RS		2.0
Varity_R		0.54
gMVP		0.61

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: chr3-71803964;