Genetic Variant CYYR1:p.Asp34Val (chr21-26566341-T-A) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

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

The NM_001320768.2(CYYR1):c.101A>T(p.Asp34Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000725 in 1,613,706 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000073 ( 0 hom. )

Consequence

CYYR1
NM_001320768.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.42

Variant links:

Genes affected

CYYR1 (HGNC:16274): (cysteine and tyrosine rich 1) Predicted to be integral component of membrane. [provided by Alliance of Genome Resources, Apr 2022]

CYYR1 links:

CYYR1-AS1 (HGNC:39560): (CYYR1 antisense RNA 1)

CYYR1-AS1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

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 rank	MANE	Protein	UniProt
CYYR1	NM_001320768.2 link	c.101A>T	p.Asp34Val	missense_variant	Exon 2 of 4	ENST00000652641.2	NP_001307697.2	Q96J86-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
CYYR1	ENST00000652641.2 link	c.101A>T	p.Asp34Val	missense_variant	Exon 2 of 4		NM_001320768.2	ENSP00000498505.1	Q96J86-2
CYYR1	ENST00000299340.9 link	c.101A>T	p.Asp34Val	missense_variant	Exon 2 of 4	1		ENSP00000299340.4	Q96J86-1
CYYR1	ENST00000400043.3 link	c.101A>T	p.Asp34Val	missense_variant	Exon 2 of 4	1		ENSP00000382918.3	Q96J86-3
CYYR1-AS1	ENST00000357401.3 link	n.2117-1616T>A		intron_variant	Intron 3 of 3	2

Frequencies

GnomAD3 genomes

AF:

0.0000657

AC:

AN:

152222

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000482

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000118

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000438

AC:

AN:

250960

Hom.:

AF XY:

0.0000442

AC XY:

AN XY:

135626

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000881

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.0000732

AC:

107

AN:

1461484

Hom.:

Cov.:

AF XY:

0.0000743

AC XY:

AN XY:

727026

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000953

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.0000657

AC:

AN:

152222

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74376

show subpopulations

Gnomad4 AFR

AF:

0.0000482

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000118

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000901

Hom.:

Bravo

AF:

0.0000491

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000412

AC:

EpiCase

AF:

0.000164

EpiControl

AF:

0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Oct 28, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.101A>T (p.D34V) alteration is located in exon 2 (coding exon 2) of the CYYR1 gene. This alteration results from a A to T substitution at nucleotide position 101, causing the aspartic acid (D) at amino acid position 34 to be replaced by a valine (V). 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

Uncertain

0.35

BayesDel_addAF

Benign

-0.20

BayesDel_noAF

Benign

-0.34

CADD

Pathogenic

DANN

Uncertain

0.99

DEOGEN2

Benign

0.043

T;.

Eigen

Uncertain

0.46

Eigen_PC

Uncertain

0.48

FATHMM_MKL

Uncertain

0.83

LIST_S2

Uncertain

0.87

D;D

M_CAP

Benign

0.023

MetaRNN

Uncertain

0.55

D;D

MetaSVM

Benign

-0.92

MutationAssessor

Benign

0.90

L;L

PrimateAI

Benign

0.41

PROVEAN

Pathogenic

-5.4

D;D

REVEL

Benign

0.17

Sift

Uncertain

0.010

D;D

Sift4G

Uncertain

0.014

D;D

Polyphen

0.93

P;.

Vest4

0.68

MVP

0.49

MPC

0.30

ClinPred

0.65

GERP RS

5.0

Varity_R

0.32

gMVP

0.55

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