Genetic Variant ENTREP2:p.Ser434Arg (chr15-29124688-G-C) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_015307.2(ENTREP2):c.1302C>G(p.Ser434Arg) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000286 in 1,398,060 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 18/24 in silico tools predict a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000029 ( 0 hom. )

Consequence

ENTREP2
NM_015307.2 missense, splice_region

Scores

Splicing: ADA: 0.001180

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -1.63

Publications

0 publications found

Variant links:

Genes affected

ENTREP2 (HGNC:29075): (endosomal transmembrane epsin interactor 2) Predicted to be integral component of membrane. [provided by Alliance of Genome Resources, Apr 2022]

ENTREP2 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.032803178).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ENTREP2	NM_015307.2 link	c.1302C>G	p.Ser434Arg	missense_variant, splice_region_variant	Exon 10 of 11	ENST00000261275.5	NP_056122.1	O60320-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ENTREP2	ENST00000261275.5 link	c.1302C>G	p.Ser434Arg	missense_variant, splice_region_variant	Exon 10 of 11	5	NM_015307.2	ENSP00000261275.4		O60320-1
ENTREP2	ENST00000560021.1 link	n.1038C>G		splice_region_variant, non_coding_transcript_exon_variant	Exon 7 of 8	1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000286

AC:

AN:

1398060

Hom.:

Cov.:

AF XY:

0.00000290

AC XY:

AN XY:

689490

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

31584

American (AMR)

AF:

0.00

AC:

AN:

35696

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25178

East Asian (EAS)

AF:

0.00

AC:

AN:

35730

South Asian (SAS)

AF:

0.00

AC:

AN:

79226

European-Finnish (FIN)

AF:

0.00

AC:

AN:

48152

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5698

European-Non Finnish (NFE)

AF:

0.00000371

AC:

AN:

1078814

Other (OTH)

AF:

0.00

AC:

AN:

57982

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.003026), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.387

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

May 30, 2023

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.1302C>G (p.S434R) alteration is located in exon 10 (coding exon 10) of the FAM189A1 gene. This alteration results from a C to G substitution at nucleotide position 1302, causing the serine (S) at amino acid position 434 to be replaced by an arginine (R). 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

0.15

BayesDel_addAF

Benign

-0.42

BayesDel_noAF

Benign

-0.84

CADD

Benign

0.047

(source)

DANN

Benign

0.65

DEOGEN2

Benign

0.0050

Eigen

Benign

-1.7

Eigen_PC

Benign

-1.8

FATHMM_MKL

Benign

0.044

LIST_S2

Benign

0.37

M_CAP

Benign

0.0032

MetaRNN

Benign

0.033

MetaSVM

Benign

-0.94

MutationAssessor

Benign

0.34

PhyloP100

-1.6

PrimateAI

Benign

0.35

PROVEAN

Benign

-1.2

REVEL

Benign

0.018

Sift

Benign

0.29

Sift4G

Benign

0.47

Polyphen

0.0010

Vest4

0.064

MutPred

0.18

Loss of glycosylation at S434 (P = 0.0084);

MVP

0.030

ClinPred

0.071

GERP RS

-9.1

Varity_R

0.060

gMVP

0.16

Mutation Taster

=85/15

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.0012

dbscSNV1_RF

Benign

0.10

SpliceAI score (max)

0.14

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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chr15-29124688-G-C

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over