Genetic Variant YJU2:p.Arg227Trp (chr19-4262085-C-T) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_018074.6(YJU2):c.679C>T(p.Arg227Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000813 in 1,611,512 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 12/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R227Q) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00017 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000072 ( 1 hom. )

Consequence

YJU2
NM_018074.6 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.406

Variant links:

Genes affected

YJU2 (HGNC:25518): (YJU2 splicing factor homolog) Predicted to enable metal ion binding activity. Predicted to be involved in RNA splicing and negative regulation of DNA damage response, signal transduction by p53 class mediator. Part of U2-type catalytic step 1 spliceosome. [provided by Alliance of Genome Resources, Apr 2022]

YJU2 links:

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ACMG classification

Classification made for transcript

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=0.014117688).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
YJU2	NM_018074.6 link	c.679C>T	p.Arg227Trp	missense_variant	Exon 6 of 8	ENST00000262962.12	NP_060544.2	Q9BW85

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
YJU2	ENST00000262962.12 link	c.679C>T	p.Arg227Trp	missense_variant	Exon 6 of 8	1	NM_018074.6	ENSP00000262962.6		Q9BW85

Frequencies

GnomAD3 genomes

AF:

0.000171

AC:

AN:

152216

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000169

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00115

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.000941

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000178

AC:

AN:

247442

Hom.:

AF XY:

0.000149

AC XY:

AN XY:

134194

show subpopulations

Gnomad AFR exome

AF:

0.000187

Gnomad AMR exome

AF:

0.000116

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000875

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.000976

Gnomad NFE exome

AF:

0.0000178

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000720

AC:

105

AN:

1459178

Hom.:

Cov.:

AF XY:

0.0000634

AC XY:

AN XY:

726032

show subpopulations

Gnomad4 AFR exome

AF:

0.0000597

Gnomad4 AMR exome

AF:

0.000112

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00111

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.000766

Gnomad4 NFE exome

AF:

0.0000126

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.000171

AC:

AN:

152334

Hom.:

Cov.:

AF XY:

0.000161

AC XY:

AN XY:

74484

show subpopulations

Gnomad4 AFR

AF:

0.000168

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00116

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.000941

Gnomad4 NFE

AF:

0.0000441

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.00000635

Hom.:

Bravo

AF:

0.0000793

ExAC

AF:

0.000206

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Apr 20, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.679C>T (p.R227W) alteration is located in exon 6 (coding exon 6) of the CCDC94 gene. This alteration results from a C to T substitution at nucleotide position 679, causing the arginine (R) at amino acid position 227 to be replaced by a tryptophan (W). 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

0.11

BayesDel_addAF

Benign

-0.51

BayesDel_noAF

Benign

-0.58

CADD

Benign

DANN

Uncertain

0.98

DEOGEN2

Benign

0.14

Eigen

Benign

-0.98

Eigen_PC

Benign

-1.0

FATHMM_MKL

Benign

0.038

LIST_S2

Benign

0.70

M_CAP

Benign

0.018

MetaRNN

Benign

0.014

MetaSVM

Benign

-1.0

PrimateAI

Uncertain

0.52

PROVEAN

Benign

-2.3

REVEL

Benign

0.025

Sift

Benign

0.054

Sift4G

Uncertain

0.013

Polyphen

0.022

Vest4

0.15

MVP

0.46

MPC

0.094

ClinPred

0.030

GERP RS

0.85

Varity_R

0.16

gMVP

0.25

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over