Genetic Variant CYYR1:p.Met123Lys (chr21-26468601-A-T) – 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.368T>A(p.Met123Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000155 in 1,612,380 control chromosomes in the GnomAD database, with no homozygous occurrence. 12/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. M123T) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000016 ( 0 hom. )

Consequence

CYYR1
NM_001320768.2 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 3.55

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:

ENSG00000232692 (HGNC:):

ENSG00000232692 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.368T>A	p.Met123Lys	missense_variant	Exon 4 of 4	ENST00000652641.2	NP_001307697.2	Q96J86-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CYYR1	ENST00000652641.2 link	c.368T>A	p.Met123Lys	missense_variant	Exon 4 of 4		NM_001320768.2	ENSP00000498505.1		Q96J86-2

Frequencies

GnomAD3 genomes

AF:

0.00000658

AC:

AN:

151904

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000657

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000241

AC:

AN:

249262

Hom.:

AF XY:

0.0000223

AC XY:

AN XY:

134586

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000174

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000164

AC:

AN:

1460476

Hom.:

Cov.:

AF XY:

0.0000165

AC XY:

AN XY:

726398

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000224

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:

0.0000126

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000658

AC:

AN:

151904

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74174

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.0000657

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000227

ExAC

AF:

0.00000824

AC:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.22

BayesDel_addAF

Benign

-0.10

BayesDel_noAF

Benign

-0.12

CADD

Benign

DANN

Benign

0.94

DEOGEN2

Benign

0.084

Eigen

Benign

-0.26

Eigen_PC

Benign

-0.21

FATHMM_MKL

Uncertain

0.79

LIST_S2

Benign

0.63

M_CAP

Benign

0.015

MetaRNN

Uncertain

0.50

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.90

PrimateAI

Uncertain

0.58

PROVEAN

Pathogenic

-4.5

REVEL

Benign

0.19

Sift

Uncertain

0.0020

Sift4G

Uncertain

0.017

Polyphen

0.033

Vest4

0.73

MutPred

0.40

Gain of ubiquitination at M122 (P = 0.0075);

MVP

0.24

MPC

0.085

ClinPred

0.46

GERP RS

2.9

Varity_R

0.76

gMVP

0.66

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

Computational scores

Splicing

Publications

LitVar

Other links and lift over