chr20-46014194-A-T

Variant names:

• chr20-46014194-A-T
• rs13969
• NM_004994.3:c.1821A>T

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2 BP4_Strong BP7

The NM_004994.3(MMP9):​c.1821A>T​(p.Gly607Gly) variant causes a synonymous 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. Synonymous variant affecting the same amino acid position (i.e. G607G) has been classified as Benign.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: MMP9 NM_004994.3 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -2.24
• Publications: 32 publications found

Genes affected

MMP9 (HGNC:7176): (matrix metallopeptidase 9) Proteins of the matrix metalloproteinase (MMP) family are involved in the breakdown of extracellular matrix in normal physiological processes, such as embryonic development, reproduction, and tissue remodeling, as well as in disease processes, such as arthritis and metastasis. Most MMP's are secreted as inactive proproteins which are activated when cleaved by extracellular proteinases. The enzyme encoded by this gene degrades type IV and V collagens. Studies in rhesus monkeys suggest that the enzyme is involved in IL-8-induced mobilization of hematopoietic progenitor cells from bone marrow, and murine studies suggest a role in tumor-associated tissue remodeling. [provided by RefSeq, Jul 2008]

SLC12A5-AS1 (HGNC:53143): (SLC12A5 and MMP9 antisense RNA 1)

ACMG classification

Our verdict: Likely_benign. The variant received -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.69).
• BP7: Synonymous conserved (PhyloP=-2.24 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_004994.3. 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
	MMP9	NM_004994.3	MANE Select	c.1821A>T	p.Gly607Gly	synonymous	Exon 11 of 13	NP_004985.2	P14780
	SLC12A5-AS1	NR_147699.1		n.1263T>A		non_coding_transcript_exon	Exon 3 of 3

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MMP9	ENST00000372330.3	TSL:1 MANE Select	c.1821A>T	p.Gly607Gly	synonymous	Exon 11 of 13	ENSP00000361405.3	P14780
	MMP9	ENST00000898203.1		c.1758A>T	p.Gly586Gly	synonymous	Exon 11 of 13	ENSP00000568262.1
	MMP9	ENST00000898204.1		c.1692A>T	p.Gly564Gly	synonymous	Exon 10 of 12	ENSP00000568263.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1385548 Hom.: 0 Cov.: 63 AF XY: 0.00 AC XY: 0 AN XY: 683366

African (AFR) AF: 0.00 AC: 0 AN: 31464

American (AMR) AF: 0.00 AC: 0 AN: 35444

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25066

East Asian (EAS) AF: 0.00 AC: 0 AN: 35678

South Asian (SAS) AF: 0.00 AC: 0 AN: 79032

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 39558

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 4884

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1076772

Other (OTH) AF: 0.00 AC: 0 AN: 57650

GnomAD4 genome Cov.: 33

Alfa AF: 0.00 Hom.: 4186

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.69
CADD	Benign	12
DANN	Benign	0.78
PhyloP100		-2.2

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: rs13969; hg19: chr20-44642833;