chr7-37950290-G-A

Position:

• chr7-37950290-G-A

Variant summary

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

The NM_017549.5(EPDR1):​c.569G>A​(p.Arg190Gln) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000958 in 1,461,842 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000096 (0 hom.)
• Consequence: EPDR1 NM_017549.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 9.69

Genes affected

EPDR1 (HGNC:17572): (ependymin related 1) The protein encoded by this gene is a type II transmembrane protein that is similar to two families of cell adhesion molecules, the protocadherins and ependymins. This protein may play a role in calcium-dependent cell adhesion. This protein is glycosylated, and the orthologous mouse protein is localized to the lysosome. Alternative splicing results in multiple transcript variants. A related pseudogene has been identified on chromosome 8. [provided by RefSeq, Aug 2011]

ENSG00000290149 (HGNC:):

SFRP4 (HGNC:10778): (secreted frizzled related protein 4) Secreted frizzled-related protein 4 (SFRP4) is a member of the SFRP family that contains a cysteine-rich domain homologous to the putative Wnt-binding site of Frizzled proteins. SFRPs act as soluble modulators of Wnt signaling. The expression of SFRP4 in ventricular myocardium correlates with apoptosis related gene expression. [provided by RefSeq, Jul 2008]

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/exons	MANE	Protein	UniProt
EPDR1	NM_017549.5	c.569G>A	p.Arg190Gln	missense_variant	3/3	ENST00000199448.9	NP_060019.2
EPDR1	NM_001242948.2	c.386G>A	p.Arg129Gln	missense_variant	3/3		NP_001229877.1
EPDR1	NM_001242946.2	c.*87G>A		3_prime_UTR_variant	2/2		NP_001229875.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
EPDR1	ENST00000199448.9	c.569G>A	p.Arg190Gln	missense_variant	3/3	1	NM_017549.5	ENSP00000199448.4
ENSG00000290149	ENST00000476620.1	c.263G>A	p.Arg88Gln	missense_variant	4/4	4		ENSP00000425858.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000958 AC: 14 AN: 1461842 Hom.: 0 Cov.: 31 AF XY: 0.0000110 AC XY: 8 AN XY: 727216

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.0000224

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.0000187

Gnomad4 NFE exome AF: 0.00000989

Gnomad4 OTH exome AF: 0.0000166

GnomAD4 genome Cov.: 32

Alfa AF: 0.000142 Hom.: 0

Bravo AF: 0.0000151

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 26, 2024

The c.569G>A (p.R190Q) alteration is located in exon 3 (coding exon 3) of the EPDR1 gene. This alteration results from a G to A substitution at nucleotide position 569, causing the arginine (R) at amino acid position 190 to be replaced by a glutamine (Q). 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	0.57
BayesDel_addAF	Pathogenic	0.40	D
BayesDel_noAF	Pathogenic	0.33
CADD	Pathogenic	27
DANN	Pathogenic	1.0
DEOGEN2	Benign	0.0087	.;T;.
Eigen	Uncertain	0.62
Eigen_PC	Uncertain	0.57
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.89	D;D;D
M_CAP	Benign	0.0080	T
MetaRNN	Uncertain	0.72	D;D;D
MetaSVM	Benign	-0.43	T
MutationAssessor	Uncertain	2.0	.;M;.
PrimateAI	Benign	0.42	T
PROVEAN	Benign	-2.1	N;N;N
REVEL	Uncertain	0.47
Sift	Benign	0.23	T;T;T
Sift4G	Uncertain	0.014	D;D;T
Vest4		0.87
MVP		0.24
MPC		0.12
ClinPred		0.94	D
GERP RS		4.8
Varity_R		0.68
gMVP		0.63

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		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: rs1299356035; hg19: chr7-37989892;