Genetic Variant NM_024756.3:c.2054G>A (chr10-86942730-C-T) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_024756.3(MMRN2):c.2054G>A(p.Gly685Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000335 in 1,432,102 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00018 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000016 ( 0 hom. )

Consequence

MMRN2
NM_024756.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.191

Variant links:

Genes affected

MMRN2 (HGNC:19888): (multimerin 2) This gene encodes a protein belonging to the member of elastin microfibril interface-located (EMILIN) protein family. This family member is an extracellular matrix glycoprotein that can interfere with tumor angiogenesis and growth. It serves as a transforming growth factor beta antagonist and can interfere with the VEGF-A/VEGFR2 pathway. A related pseudogene has been identified on chromosome 6. [provided by RefSeq, Aug 2012]

MMRN2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.016970038).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MMRN2	NM_024756.3 link	c.2054G>A	p.Gly685Asp	missense_variant	Exon 6 of 7	ENST00000372027.10	NP_079032.2	Q9H8L6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MMRN2	ENST00000372027.10 link	c.2054G>A	p.Gly685Asp	missense_variant	Exon 6 of 7	1	NM_024756.3	ENSP00000361097.4		Q9H8L6

Frequencies

GnomAD3 genomes

AF:

0.000184

AC:

AN:

152076

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000676

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000372

AC:

AN:

53756

Hom.:

AF XY:

0.0000332

AC XY:

AN XY:

30120

show subpopulations

Gnomad AFR exome

AF:

0.000392

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000168

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000156

AC:

AN:

1280026

Hom.:

Cov.:

AF XY:

0.0000160

AC XY:

AN XY:

624180

show subpopulations

Gnomad4 AFR exome

AF:

0.000424

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000160

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.000132

GnomAD4 genome

AF:

0.000184

AC:

AN:

152076

Hom.:

Cov.:

AF XY:

0.000188

AC XY:

AN XY:

74302

show subpopulations

Gnomad4 AFR

AF:

0.000676

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000142

Hom.:

Bravo

AF:

0.000170

ExAC

AF:

0.0000614

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Aug 25, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.2054G>A (p.G685D) alteration is located in exon 6 (coding exon 6) of the MMRN2 gene. This alteration results from a G to A substitution at nucleotide position 2054, causing the glycine (G) at amino acid position 685 to be replaced by an aspartic acid (D). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.083

BayesDel_addAF

Benign

-0.63

BayesDel_noAF

Benign

-0.75

CADD

Benign

4.9

DANN

Benign

0.76

DEOGEN2

Benign

0.0040

Eigen

Benign

-1.4

Eigen_PC

Benign

-1.5

FATHMM_MKL

Benign

0.028

LIST_S2

Benign

0.38

M_CAP

Benign

0.015

MetaRNN

Benign

0.017

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.4

PrimateAI

Uncertain

0.70

PROVEAN

Benign

-0.28

REVEL

Benign

0.058

Sift

Benign

0.45

Sift4G

Benign

0.062

Polyphen

0.061

Vest4

0.079

MutPred

0.13

Loss of catalytic residue at G685 (P = 0.0218);

MVP

0.10

MPC

1.6

ClinPred

0.019

GERP RS

-9.4

Varity_R

0.038

gMVP

0.21

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