19-11378194-C-T

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PVS1_Strong PM2

The NM_000121.4(EPOR):c.1317G>A(p.Trp439Ter) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. 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 Affects (no stars).

• Frequency: Genomes: not found (cov: 32)
• Consequence: EPOR NM_000121.4 stop_gained
• Clinical Significance: Affects no assertion criteria provided O:2
• Conservation: PhyloP100: -0.640

Genes affected

EPOR (HGNC:3416): (erythropoietin receptor) This gene encodes the erythropoietin receptor which is a member of the cytokine receptor family. Upon erythropoietin binding, this receptor activates Jak2 tyrosine kinase which activates different intracellular pathways including: Ras/MAP kinase, phosphatidylinositol 3-kinase and STAT transcription factors. The stimulated erythropoietin receptor appears to have a role in erythroid cell survival. Defects in the erythropoietin receptor may produce erythroleukemia and familial erythrocytosis. Dysregulation of this gene may affect the growth of certain tumors. Alternate splicing results in multiple transcript variants.[provided by RefSeq, May 2010]

ACMG classification

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

• PVS1: Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant is located in the 3'-most exon, not predicted to undergo nonsense mediated mRNA decay. There are 4 pathogenic variants in the truncated region.
• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
EPOR	NM_000121.4	c.1317G>A	p.Trp439Ter	stop_gained	8/8	ENST00000222139.11
EPOR	NR_033663.2	n.1674G>A		non_coding_transcript_exon_variant	8/8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
EPOR	ENST00000222139.11	c.1317G>A	p.Trp439Ter	stop_gained	8/8	1	NM_000121.4	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Significance: Affects

Submissions summary: Other:2

Revision: no assertion criteria provided

Submissions by phenotype

Primary familial polycythemia due to EPO receptor mutation Other:2

Affects, no assertion criteria provided	literature only	OMIM	Feb 01, 1998	- -
not provided, no classification provided	literature only	GeneReviews	-	- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.58	D
BayesDel_noAF	Pathogenic	0.27
Cadd	Pathogenic	32
Dann	Benign	0.82
Eigen	Benign	0.054
Eigen_PC	Benign	-0.35
FATHMM_MKL	Benign	0.058	N
MutationTaster	Benign	1.0	A
Vest4		0.80
GERP RS		-0.57

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: rs121918116; hg19: chr19-11488870;