5-40681715-A-C

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_000958.3(PTGER4):c.722A>C(p.His241Pro) 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. 15/21 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: PTGER4 NM_000958.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.0580

Genes affected

PTGER4 (HGNC:9596): (prostaglandin E receptor 4) The protein encoded by this gene is a member of the G-protein coupled receptor family. This protein is one of four receptors identified for prostaglandin E2 (PGE2). This receptor can activate T-cell factor signaling. It has been shown to mediate PGE2 induced expression of early growth response 1 (EGR1), regulate the level and stability of cyclooxygenase-2 mRNA, and lead to the phosphorylation of glycogen synthase kinase-3. Knockout studies in mice suggest that this receptor may be involved in the neonatal adaptation of circulatory system, osteoporosis, as well as initiation of skin immune responses. [provided by RefSeq, Jul 2008]

TTC33 (HGNC:29959): (tetratricopeptide repeat domain 33)

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.060401708).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PTGER4	NM_000958.3	c.722A>C	p.His241Pro	missense_variant	2/3	ENST00000302472.4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PTGER4	ENST00000302472.4	c.722A>C	p.His241Pro	missense_variant	2/3	1	NM_000958.3	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

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

Nov 05, 2021

The c.722A>C (p.H241P) alteration is located in exon 2 (coding exon 1) of the PTGER4 gene. This alteration results from a A to C substitution at nucleotide position 722, causing the histidine (H) at amino acid position 241 to be replaced by a proline (P). 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	0.053
BayesDel_addAF	Benign	-0.26	T
BayesDel_noAF	Benign	-0.62
Cadd	Benign	10
Dann	Benign	0.66
DEOGEN2	Benign	0.088	T
Eigen	Benign	-1.1
Eigen_PC	Benign	-1.1
FATHMM_MKL	Benign	0.079	N
LIST_S2	Benign	0.26	T
M_CAP	Benign	0.038	D
MetaRNN	Benign	0.060	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.0	N
MutationTaster	Benign	1.0	N
PrimateAI	Uncertain	0.63	T
PROVEAN	Benign	-0.65	N
REVEL	Benign	0.060
Sift	Benign	0.33	T
Sift4G	Benign	0.27	T
Polyphen		0.0	B
Vest4		0.077
MutPred		0.43		Gain of glycosylation at H241 (P = 0.0118);
MVP		0.37
MPC		1.8
ClinPred		0.046	T
GERP RS		-2.0
Varity_R		0.13
gMVP		0.46

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

Other links and lift over

dbSNP: rs1392141151; hg19: chr5-40681817; COSMIC: COSV56722018; COSMIC: COSV56722018;