Genetic Variant MSGN1:p.Arg5Cys (chr2-17816531-C-T) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001105569.3(MSGN1):c.13C>T(p.Arg5Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000696 in 1,436,906 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 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. R5S) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 7.0e-7 ( 0 hom. )

Consequence

MSGN1
NM_001105569.3 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 2.76

Publications

0 publications found

Variant links:

Genes affected

MSGN1 (HGNC:14907): (mesogenin 1) Enables sequence-specific double-stranded DNA binding activity. Predicted to be involved in mesoderm formation and regulation of transcription by RNA polymerase II. Predicted to act upstream of or within segment specification and somitogenesis. Predicted to be part of chromatin. Predicted to be active in nucleus. [provided by Alliance of Genome Resources, Apr 2022]

MSGN1 Gene-Disease associations (from GenCC):

skeletal dysplasia
Inheritance: AR Classification: LIMITED Submitted by: Ambry Genetics

MSGN1 links:

ENSG00000297720 (HGNC:):

ENSG00000297720 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.1121178).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001105569.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MSGN1	NM_001105569.3	MANE Select	c.13C>T	p.Arg5Cys	missense	Exon 1 of 1	NP_001099039.1	A6NI15

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
MSGN1	ENST00000281047.4	TSL:6 MANE Select	c.13C>T	p.Arg5Cys	missense	Exon 1 of 1	ENSP00000281047.3	A6NI15
ENSG00000297720	ENST00000750479.1		n.454-11577G>A		intron	N/A
ENSG00000297720	ENST00000750480.1		n.416-7798G>A		intron	N/A

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.96e-7

AC:

AN:

1436906

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

710946

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

32740

American (AMR)

AF:

0.00

AC:

AN:

41808

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25004

East Asian (EAS)

AF:

0.00

AC:

AN:

39198

South Asian (SAS)

AF:

0.00

AC:

AN:

84732

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52848

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5660

European-Non Finnish (NFE)

AF:

9.13e-7

AC:

AN:

1095884

Other (OTH)

AF:

0.00

AC:

AN:

59032

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.325

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.10

BayesDel_addAF

Benign

-0.30

BayesDel_noAF

Benign

-0.68

CADD

Benign

(source)

DANN

Uncertain

0.98

DEOGEN2

Benign

0.12

Eigen

Benign

-0.72

Eigen_PC

Benign

-0.67

FATHMM_MKL

Uncertain

0.92

LIST_S2

Benign

0.75

M_CAP

Benign

0.010

MetaRNN

Benign

0.11

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.5

PhyloP100

2.8

PrimateAI

Benign

0.23

PROVEAN

Benign

-1.6

REVEL

Benign

0.054

Sift

Uncertain

0.012

Sift4G

Uncertain

0.019

Polyphen

0.0

Vest4

0.38

MutPred

0.32

Loss of disorder (P = 0.0507)

MVP

0.10

MPC

0.26

ClinPred

0.26

GERP RS

2.5

PromoterAI

-0.015

Neutral

(source)

Varity_R

0.086

gMVP

0.40

Mutation Taster

=90/10

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over