2-17816771-G-C

Variant names:

• chr2-17816771-G-C
• rs1040261976
• NM_001105569.3:c.253G>C

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_001105569.3(MSGN1):​c.253G>C​(p.Gly85Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 16/22 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. G85S) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 34)
• Consequence: MSGN1 NM_001105569.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.13
• Publications: 0 publications found

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

ENSG00000297720 (HGNC:):

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.04152319).

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.253G>C	p.Gly85Arg	missense	Exon 1 of 1	NP_001099039.1	A6NI15

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MSGN1	ENST00000281047.4	TSL:6 MANE Select	c.253G>C	p.Gly85Arg	missense	Exon 1 of 1	ENSP00000281047.3	A6NI15
	ENSG00000297720	ENST00000750479.1		n.454-11817C>G		intron	N/A
	ENSG00000297720	ENST00000750480.1		n.416-8038C>G		intron	N/A

Frequencies

GnomAD3 genomes Cov.: 34

GnomAD4 exome Cov.: 76

GnomAD4 genome Cov.: 34

Alfa AF: 0.00 Hom.: 0

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.078
BayesDel_addAF	Benign	-0.36	T
BayesDel_noAF	Benign	-0.75
CADD	Benign	8.1
DANN	Benign	0.099
DEOGEN2	Benign	0.030	T
Eigen	Benign	-1.2
Eigen_PC	Benign	-1.1
FATHMM_MKL	Benign	0.00086	N
LIST_S2	Benign	0.43	T
M_CAP	Benign	0.0046	T
MetaRNN	Benign	0.042	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	-1.0	N
PhyloP100		1.1
PrimateAI	Benign	0.27	T
PROVEAN	Benign	0.22	N
REVEL	Benign	0.022
Sift	Benign	0.49	T
Sift4G	Benign	0.52	T
Polyphen		0.0	B
Vest4		0.097
MutPred		0.29		Gain of sheet (P = 0.0477)
MVP		0.048
MPC		0.17
ClinPred		0.076	T
GERP RS		1.9
PromoterAI		-0.026	Neutral
Varity_R		0.026
gMVP		0.21
Mutation Taster		=100/0	polymorphism

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

Other links and lift over

dbSNP: rs1040261976; hg19: chr2-17998038;