2-190056863-T-G

Position:

chr2-190056863-T-G

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_ModerateBP6_ModerateBA1

The NM_005259.3(MSTN):c.*395A>C variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0275 in 214,186 control chromosomes in the GnomAD database, including 382 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).

Frequency

Genomes: 𝑓 0.038 ( 374 hom., cov: 32)

Exomes 𝑓: 0.0027 ( 8 hom. )

Consequence

MSTN
NM_005259.3 3_prime_UTR

Scores

Clinical Significance

Benign criteria provided, single submitter B:1

Conservation

PhyloP100: 0.400

Variant links:

Genes affected

MSTN (HGNC:4223): (myostatin) This gene encodes a secreted ligand of the TGF-beta (transforming growth factor-beta) superfamily of proteins. Ligands of this family bind various TGF-beta receptors leading to recruitment and activation of SMAD family transcription factors that regulate gene expression. The encoded preproprotein is proteolytically processed to generate each subunit of the disulfide-linked homodimer. This protein negatively regulates skeletal muscle cell proliferation and differentiation. Mutations in this gene are associated with increased skeletal muscle mass in humans and other mammals. [provided by RefSeq, Jul 2016]

MSTN links:

C2orf88 (HGNC:28191): (chromosome 2 open reading frame 88) Predicted to enable protein kinase A regulatory subunit binding activity. Predicted to be located in plasma membrane. [provided by Alliance of Genome Resources, Apr 2022]

C2orf88 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -12 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.45).

BP6

Variant 2-190056863-T-G is Benign according to our data. Variant chr2-190056863-T-G is described in ClinVar as [Benign]. Clinvar id is 333227.Status of the report is criteria_provided_single_submitter, 1 stars.

BA1

GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.127 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	Effect	#exon/exons	MANE
MSTN	NM_005259.3 linkuse as main transcript	c.*395A>C	3_prime_UTR_variant	3/3	ENST00000260950.5
C2orf88	XM_047446008.1 linkuse as main transcript	c.-517-23091T>G	intron_variant
C2orf88	XM_047446009.1 linkuse as main transcript	c.-517-23091T>G	intron_variant

Ensembl

Gene	Transcript	HGVSc	Effect	#exon/exons	TSL	MANE	Appris
MSTN	ENST00000260950.5 linkuse as main transcript	c.*395A>C	3_prime_UTR_variant	3/3	1	NM_005259.3	P1
C2orf88	ENST00000478197.1 linkuse as main transcript	n.220-22360T>G	intron_variant, non_coding_transcript_variant		4
C2orf88	ENST00000495546.1 linkuse as main transcript	n.202-23091T>G	intron_variant, non_coding_transcript_variant		4

Frequencies

GnomAD3 genomes

AF:

0.0375

AC:

5705

AN:

152072

Hom.:

373

Cov.:

show subpopulations

Gnomad AFR

AF:

0.130

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0154

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000414

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.000309

Gnomad OTH

AF:

0.0259

GnomAD4 exome

AF:

0.00273

AC:

169

AN:

61996

Hom.:

Cov.:

AF XY:

0.00236

AC XY:

AN XY:

31748

show subpopulations

Gnomad4 AFR exome

AF:

0.102

Gnomad4 AMR exome

AF:

0.00726

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000376

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000107

Gnomad4 OTH exome

AF:

0.00658

GnomAD4 genome

AF:

0.0376

AC:

5721

AN:

152190

Hom.:

374

Cov.:

AF XY:

0.0364

AC XY:

2713

AN XY:

74436

show subpopulations

Gnomad4 AFR

AF:

0.130

Gnomad4 AMR

AF:

0.0154

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000414

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000309

Gnomad4 OTH

AF:

0.0256

Alfa

AF:

0.00784

Hom.:

Bravo

AF:

0.0428

Asia WGS

AF:

0.00808

AC:

AN:

3478

ClinVar

Significance: Benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Myostatin-related muscle hypertrophy

Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 13, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.45

CADD

Benign

DANN

Benign

0.82

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