5-174724708-G-T

Variant names:

• chr5-174724708-G-T
• rs754789827
• NM_002449.5:c.49G>T

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2 BP4

The NM_002449.5(MSX2):​c.49G>T​(p.Gly17Cys) 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. 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. G17V) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: MSX2 NM_002449.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.819
• Publications: 0 publications found

Genes affected

MSX2 (HGNC:7392): (msh homeobox 2) This gene encodes a member of the muscle segment homeobox gene family. The encoded protein is a transcriptional repressor whose normal activity may establish a balance between survival and apoptosis of neural crest-derived cells required for proper craniofacial morphogenesis. The encoded protein may also have a role in promoting cell growth under certain conditions and may be an important target for the RAS signaling pathways. Mutations in this gene are associated with parietal foramina 1 and craniosynostosis type 2. [provided by RefSeq, Jul 2008]

MSX2 Gene-Disease associations (from GenCC):

• craniosynostosis 2

  Inheritance: AD Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE Submitted by: G2P, Labcorp Genetics (formerly Invitae), Ambry Genetics, ClinGen, Orphanet
• parietal foramina

  Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: ClinGen, Orphanet
• parietal foramina with cleidocranial dysplasia

  Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE, LIMITED Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), G2P
• parietal foramina 1

  Inheritance: AD Classification: STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics

ACMG classification

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.3722459).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_002449.5. 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
	MSX2	NM_002449.5	MANE Select	c.49G>T	p.Gly17Cys	missense	Exon 1 of 2	NP_002440.2
	MSX2	NM_001363626.2		c.49G>T	p.Gly17Cys	missense	Exon 1 of 2	NP_001350555.1	D6RIS4

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MSX2	ENST00000239243.7	TSL:1 MANE Select	c.49G>T	p.Gly17Cys	missense	Exon 1 of 2	ENSP00000239243.5	P35548
	MSX2	ENST00000507785.2	TSL:2	c.49G>T	p.Gly17Cys	missense	Exon 1 of 2	ENSP00000427425.1	D6RIS4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.00 AC: 0 AN: 211336 AF XY: 0.00

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1439058 Hom.: 0 Cov.: 35 AF XY: 0.00 AC XY: 0 AN XY: 714274

African (AFR) AF: 0.00 AC: 0 AN: 33066

American (AMR) AF: 0.00 AC: 0 AN: 42280

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25734

East Asian (EAS) AF: 0.00 AC: 0 AN: 38978

South Asian (SAS) AF: 0.00 AC: 0 AN: 83500

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 50902

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 4772

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1100414

Other (OTH) AF: 0.00 AC: 0 AN: 59412

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.16
BayesDel_addAF	Uncertain	0.076	D
BayesDel_noAF	Benign	-0.13
CADD	Uncertain	23
DANN	Uncertain	1.0
DEOGEN2	Benign	0.41	T
Eigen	Uncertain	0.20
Eigen_PC	Benign	0.19
FATHMM_MKL	Uncertain	0.94	D
LIST_S2	Benign	0.69	T
M_CAP	Pathogenic	0.41	D
MetaRNN	Benign	0.37	T
MetaSVM	Uncertain	0.36	D
MutationAssessor	Benign	1.7	L
PhyloP100		0.82
PrimateAI	Uncertain	0.75	T
PROVEAN	Benign	-1.5	N
REVEL	Uncertain	0.35
Sift	Uncertain	0.019	D
Sift4G	Benign	0.17	T
Polyphen		0.98	D
Vest4		0.21
MutPred		0.18		Loss of catalytic residue at G17 (P = 0.0905)
MVP		0.97
MPC		0.73
ClinPred		0.87	D
GERP RS		4.4
PromoterAI		-0.11	Neutral
Varity_R		0.20
gMVP		0.62
Mutation Taster		=53/47	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: rs754789827; hg19: chr5-174151711;