16-1941361-G-A

Position:

chr16-1941361-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_016332.4(MSRB1):c.100C>T(p.Arg34Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000113 in 1,613,748 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 11/19 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.00012 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00011 ( 0 hom. )

Consequence

MSRB1
NM_016332.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.750

Variant links:

Genes affected

MSRB1 (HGNC:14133): (methionine sulfoxide reductase B1) The protein encoded by this gene belongs to the methionine-R-sulfoxide reductase B (MsrB) family. Members of this family function as repair enzymes that protect proteins from oxidative stress by catalyzing the reduction of methionine-R-sulfoxides to methionines. This protein is highly expressed in liver and kidney, and is localized to the nucleus and cytosol. It is the only member of the MsrB family that is a selenoprotein, containing a selenocysteine (Sec) residue at its active site. It also has the highest methionine-R-sulfoxide reductase activity compared to other members containing cysteine in place of Sec. Sec is encoded by the UGA codon, which normally signals translation termination. The 3' UTRs of selenoprotein mRNAs contain a conserved stem-loop structure, designated the Sec insertion sequence (SECIS) element, that is necessary for the recognition of UGA as a Sec codon, rather than as a stop signal. A pseudogene of this locus has been identified on chromosome 19. [provided by RefSeq, Aug 2017]

MSRB1 links:

MSRB1 (HGNC:):

MSRB1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.25570852).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MSRB1	NM_016332.4 linkuse as main transcript	c.100C>T	p.Arg34Cys	missense_variant	2/4	ENST00000361871.8	NP_057416.1	Q9NZV6
MSRB1	NM_001382264.1 linkuse as main transcript	c.100C>T	p.Arg34Cys	missense_variant	2/4		NP_001369193.1
MSRB1	NM_001382265.1 linkuse as main transcript	c.100C>T	p.Arg34Cys	missense_variant	2/3		NP_001369194.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MSRB1	ENST00000361871.8 linkuse as main transcript	c.100C>T	p.Arg34Cys	missense_variant	2/4	1	NM_016332.4	ENSP00000355084.3		Q9NZV6

Frequencies

GnomAD3 genomes

AF:

0.000125

AC:

AN:

152112

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000483

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000393

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:

0.000103

Gnomad OTH

AF:

0.00192

GnomAD3 exomes

AF:

0.0000967

AC:

AN:

248304

Hom.:

AF XY:

0.0000963

AC XY:

AN XY:

134990

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000232

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000125

Gnomad OTH exome

AF:

0.000166

GnomAD4 exome

AF:

0.000112

AC:

164

AN:

1461636

Hom.:

Cov.:

AF XY:

0.000109

AC XY:

AN XY:

727092

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000313

Gnomad4 ASJ exome

AF:

0.0000383

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.0000232

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000123

Gnomad4 OTH exome

AF:

0.000149

GnomAD4 genome

AF:

0.000125

AC:

AN:

152112

Hom.:

Cov.:

AF XY:

0.000121

AC XY:

AN XY:

74292

show subpopulations

Gnomad4 AFR

AF:

0.0000483

Gnomad4 AMR

AF:

0.000393

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000103

Gnomad4 OTH

AF:

0.00192

Alfa

AF:

0.0000823

Hom.:

Bravo

AF:

0.000128

ExAC

AF:

0.0000744

AC:

EpiCase

AF:

0.000164

EpiControl

AF:

0.000237

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Nov 13, 2024

The c.100C>T (p.R34C) alteration is located in exon 2 (coding exon 2) of the MSRB1 gene. This alteration results from a C to T substitution at nucleotide position 100, causing the arginine (R) at amino acid position 34 to be replaced by a cysteine (C). 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

BayesDel_addAF

Benign

-0.22

BayesDel_noAF

Benign

-0.28

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.69

D;T;.;.

Eigen

Benign

-0.19

Eigen_PC

Benign

-0.34

FATHMM_MKL

Uncertain

0.95

LIST_S2

Benign

0.73

T;T;T;T

M_CAP

Benign

0.041

MetaRNN

Benign

0.26

T;T;T;T

MetaSVM

Uncertain

-0.16

MutationAssessor

Pathogenic

3.0

M;.;.;.

PrimateAI

Benign

0.31

PROVEAN

Uncertain

-4.0

D;.;D;D

REVEL

Uncertain

0.31

Sift

Benign

0.051

T;.;D;D

Sift4G

Uncertain

0.026

D;D;D;D

Polyphen

0.99

D;.;.;.

Vest4

0.34

MVP

0.58

MPC

0.19

ClinPred

0.85

GERP RS

0.55

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.0

Varity_R

0.32

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