16-55475988-A-G

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BA1

The ENST00000570308.5(MMP2):c.-75-6921A>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.334 in 152,120 control chromosomes in the GnomAD database, including 8,850 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.33 (8850 hom., cov: 33)
• Consequence: MMP2 ENST00000570308.5 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -3.70

Genes affected

MMP2 (HGNC:7166): (matrix metallopeptidase 2) This gene is a member of the matrix metalloproteinase (MMP) gene family, that are zinc-dependent enzymes capable of cleaving components of the extracellular matrix and molecules involved in signal transduction. The protein encoded by this gene is a gelatinase A, type IV collagenase, that contains three fibronectin type II repeats in its catalytic site that allow binding of denatured type IV and V collagen and elastin. Unlike most MMP family members, activation of this protein can occur on the cell membrane. This enzyme can be activated extracellularly by proteases, or, intracellulary by its S-glutathiolation with no requirement for proteolytical removal of the pro-domain. This protein is thought to be involved in multiple pathways including roles in the nervous system, endometrial menstrual breakdown, regulation of vascularization, and metastasis. Mutations in this gene have been associated with Winchester syndrome and Nodulosis-Arthropathy-Osteolysis (NAO) syndrome. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Oct 2014]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.71).
• BA1: GnomAd4 highest subpopulation (SAS) allele frequency at 95% confidence interval = 0.492 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MMP2	ENST00000570308.5	c.-75-6921A>G		intron_variant		1

Frequencies

GnomAD3 genomes AF: 0.334 AC: 50786 AN: 152002 Hom.: 8846 Cov.: 33

Gnomad AFR AF: 0.232

Gnomad AMI AF: 0.273

Gnomad AMR AF: 0.366

Gnomad ASJ AF: 0.311

Gnomad EAS AF: 0.416

Gnomad SAS AF: 0.509

Gnomad FIN AF: 0.409

Gnomad MID AF: 0.250

Gnomad NFE AF: 0.361

Gnomad OTH AF: 0.326

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.334 AC: 50818 AN: 152120 Hom.: 8850 Cov.: 33 AF XY: 0.339 AC XY: 25209 AN XY: 74352

Gnomad4 AFR AF: 0.232

Gnomad4 AMR AF: 0.366

Gnomad4 ASJ AF: 0.311

Gnomad4 EAS AF: 0.415

Gnomad4 SAS AF: 0.509

Gnomad4 FIN AF: 0.409

Gnomad4 NFE AF: 0.361

Gnomad4 OTH AF: 0.326

Alfa AF: 0.358 Hom.: 8623

Bravo AF: 0.323

Asia WGS AF: 0.426 AC: 1487 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.71
Cadd	Benign	0.045
Dann	Benign	0.83

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs243867; hg19: chr16-55509900;