chr2-132645415-C-T

Variant names:

• chr2-132645415-C-T
• NM_001508.3:c.1171C>T

Variant summary

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

The NM_001508.3(GPR39):​c.1171C>T​(p.Pro391Ser) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P391R) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 33)
• Consequence: GPR39 NM_001508.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 6.71

Genes affected

GPR39 (HGNC:4496): (G protein-coupled receptor 39) This gene is a member of the ghrelin receptor family and encodes a rhodopsin-type G-protein-coupled receptor (GPCR). The encoded protein is involved in zinc-dependent signaling in epithelial tissue in intestines, prostate and salivary glands. The protein may also be involved in the pathophysiology of depression. [provided by RefSeq, Jun 2016]

LYPD1 (HGNC:28431): (LY6/PLAUR domain containing 1) Predicted to enable acetylcholine receptor binding activity and acetylcholine receptor inhibitor activity. Predicted to be involved in acetylcholine receptor signaling pathway. Predicted to act upstream of or within several processes, including behavioral fear response; cholinergic synaptic transmission; and negative regulation of protein localization to plasma membrane. Predicted to be located in membrane. [provided by Alliance of Genome Resources, Apr 2022]

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 rank	MANE	Protein	UniProt
GPR39	NM_001508.3	c.1171C>T	p.Pro391Ser	missense_variant	Exon 2 of 2	ENST00000329321.4	NP_001499.1
LYPD1	NM_144586.7	c.*630G>A		3_prime_UTR_variant	Exon 3 of 3	ENST00000397463.3	NP_653187.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
GPR39	ENST00000329321.4	c.1171C>T	p.Pro391Ser	missense_variant	Exon 2 of 2	1	NM_001508.3	ENSP00000327417.3
LYPD1	ENST00000397463	c.*630G>A		3_prime_UTR_variant	Exon 3 of 3	1	NM_144586.7	ENSP00000380605.2
GPR39	ENST00000470071.1	n.874C>T		non_coding_transcript_exon_variant	Exon 3 of 3	2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Oct 29, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1171C>T (p.P391S) alteration is located in exon 2 (coding exon 2) of the GPR39 gene. This alteration results from a C to T substitution at nucleotide position 1171, causing the proline (P) at amino acid position 391 to be replaced by a serine (S). 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	0.16
BayesDel_addAF	Uncertain	0.070	D
BayesDel_noAF	Benign	-0.14
CADD	Benign	20
DANN	Uncertain	1.0
DEOGEN2	Benign	0.23	T
Eigen	Uncertain	0.51
Eigen_PC	Uncertain	0.45
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Benign	0.52	T
M_CAP	Uncertain	0.11	D
MetaRNN	Uncertain	0.73	D
MetaSVM	Benign	-0.52	T
MutationAssessor	Uncertain	2.3	M
PrimateAI	Benign	0.37	T
PROVEAN	Benign	-2.2	N
REVEL	Uncertain	0.35
Sift	Pathogenic	0.0	D
Sift4G	Pathogenic	0.0	D
Polyphen		1.0	D
Vest4		0.52
MutPred		0.39		Gain of phosphorylation at P391 (P = 0.0382);
MVP		0.87
MPC		0.97
ClinPred		0.97	D
GERP RS		5.2
Varity_R		0.18
gMVP		0.39

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.060		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: chr2-133402988;