2-208442442-C-T

Position:

• chr2-208442442-C-T

Variant summary

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

The NM_005048.4(PTH2R):​c.490C>T​(p.Leu164Phe) 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. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: PTH2R NM_005048.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.580

Genes affected

PTH2R (HGNC:9609): (parathyroid hormone 2 receptor) The protein encoded by this gene is a member of the G-protein coupled receptor 2 family. This protein is a receptor for parathyroid hormone (PTH). This receptor is more selective in ligand recognition and has a more specific tissue distribution compared to parathyroid hormone receptor 1 (PTHR1). It is activated only by PTH and not by parathyroid hormone-like hormone (PTHLH) and is particularly abundant in brain and pancreas. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jan 2013]

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=0.12024075).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PTH2R	NM_005048.4	c.490C>T	p.Leu164Phe	missense_variant	5/13	ENST00000272847.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PTH2R	ENST00000272847.7	c.490C>T	p.Leu164Phe	missense_variant	5/13	1	NM_005048.4	P1
PTH2R	ENST00000617735.4	c.157C>T	p.Leu53Phe	missense_variant	5/13	2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

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

Jan 26, 2023

The c.490C>T (p.L164F) alteration is located in exon 5 (coding exon 5) of the PTH2R gene. This alteration results from a C to T substitution at nucleotide position 490, causing the leucine (L) at amino acid position 164 to be replaced by a phenylalanine (F). 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	0.056
BayesDel_addAF	Benign	-0.27	T
BayesDel_noAF	Benign	-0.62
CADD	Benign	13
DANN	Uncertain	0.98
DEOGEN2	Benign	0.031	T;T
Eigen	Benign	-0.51
Eigen_PC	Benign	-0.35
FATHMM_MKL	Benign	0.68	D
LIST_S2	Benign	0.81	T;T
M_CAP	Benign	0.0045	T
MetaRNN	Benign	0.12	T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.29	.;N
MutationTaster	Benign	0.54	N
PrimateAI	Benign	0.43	T
PROVEAN	Benign	-1.4	.;N
REVEL	Benign	0.079
Sift	Benign	0.35	.;T
Sift4G	Benign	0.44	T;T
Polyphen		0.011	B;B
Vest4		0.14
MutPred		0.63		.;Gain of sheet (P = 0.1451);
MVP		0.061
MPC		0.032
ClinPred		0.10	T
GERP RS		3.0
Varity_R		0.084
gMVP		0.31

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: chr2-209307167;