rs75990461

Variant names:

• chr12-65453722-T-C
• rs75990461
• NM_001031679.3:c.293-6T>C

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_Strong BP6_Very_Strong BA1

The NM_001031679.3(MSRB3):​c.293-6T>C variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00513 in 1,611,986 control chromosomes in the GnomAD database, including 394 homozygotes. In-silico tool predicts 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 Benign (★★).

• Frequency:
  • Genomes: 𝑓 0.028 (210 hom., cov: 32)
  • Exomes 𝑓: 0.0028 (184 hom.)
• Consequence: MSRB3 NM_001031679.3 splice_region, intron
• Scores: Splicing: ADA: 0.00005209
• Clinical Significance: Benign criteria provided, multiple submitters, no conflicts B:3
• Conservation: PhyloP100: -0.0700

Genes affected

MSRB3 (HGNC:27375): (methionine sulfoxide reductase B3) The protein encoded by this gene catalyzes the reduction of methionine sulfoxide to methionine. This enzyme acts as a monomer and requires zinc as a cofactor. Several transcript variants encoding two different isoforms have been found for this gene. One of the isoforms localizes to mitochondria while the other localizes to endoplasmic reticula. [provided by RefSeq, Jul 2010]

ACMG classification

Verdict is Benign. Variant got -20 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.84).
• BP6: Variant 12-65453722-T-C is Benign according to our data. Variant chr12-65453722-T-C is described in ClinVar as [Benign]. Clinvar id is 44117.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0942 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MSRB3	NM_001031679.3	c.293-6T>C		splice_region_variant, intron_variant	Intron 5 of 6	ENST00000308259.10	NP_001026849.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MSRB3	ENST00000308259.10	c.293-6T>C		splice_region_variant, intron_variant	Intron 5 of 6	1	NM_001031679.3	ENSP00000312274.6

Frequencies

GnomAD3 genomes AF: 0.0276 AC: 4196 AN: 152142 Hom.: 209 Cov.: 32

Gnomad AFR AF: 0.0969

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00917

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000414

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000191

Gnomad OTH AF: 0.0143

GnomAD3 exomes AF: 0.00733 AC: 1841 AN: 251004 Hom.: 97 AF XY: 0.00532 AC XY: 721 AN XY: 135632

Gnomad AFR exome AF: 0.103

Gnomad AMR exome AF: 0.00397

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.000163

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.000106

Gnomad OTH exome AF: 0.00261

GnomAD4 exome AF: 0.00279 AC: 4070 AN: 1459726 Hom.: 184 Cov.: 30 AF XY: 0.00242 AC XY: 1760 AN XY: 726334

Gnomad4 AFR exome AF: 0.103

Gnomad4 AMR exome AF: 0.00454

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.000244

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000568

Gnomad4 OTH exome AF: 0.00555

GnomAD4 genome AF: 0.0276 AC: 4202 AN: 152260 Hom.: 210 Cov.: 32 AF XY: 0.0260 AC XY: 1939 AN XY: 74442

Gnomad4 AFR AF: 0.0967

Gnomad4 AMR AF: 0.00916

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.000414

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000191

Gnomad4 OTH AF: 0.0142

Alfa AF: 0.0145 Hom.: 46

Bravo AF: 0.0318

Asia WGS AF: 0.00433 AC: 15 AN: 3478

EpiCase AF: 0.000218

EpiControl AF: 0.000119

ClinVar

Significance: Benign

Submissions summary: Benign:3

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not specified Benign:2

Oct 05, 2017

GeneDx

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

May 07, 2012

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

293-6T>C in Intron 06 of MSRB3: This variant is not expected to have clinical si gnificance because it has been identified in 9.4% (353/3738) of African American chromosomes from a broad population by the NHLBI Exome Sequencing Project (http ://evs.gs.washington.edu/EVS; dbSNP rs75990461). -

not provided Benign:1

Jan 30, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.84
CADD	Benign	3.1
DANN	Benign	0.58

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.000052
dbscSNV1_RF	Benign	0.0
SpliceAI score (max)		0.020		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

Other links and lift over

dbSNP: rs75990461; hg19: chr12-65847502;