11-102578736-AAAAAAAC-A

Position:

• chr11-102578736-AAAAAAAC-A

Variant summary

Our verdict is Benign. Variant got -10 ACMG points: 0P and 10B. BP6_Moderate BA1

The NM_004771.4(MMP20):​c.1351+296_1351+302delGTTTTTT variant causes a intron change involving the alteration of a non-conserved nucleotide. Variant has been reported in ClinVar as Benign (★).

• Frequency: Genomes: 𝑓 0.63 (30116 hom., cov: 0)
• Consequence: MMP20 NM_004771.4 intron
• Clinical Significance: Benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 0.591

Genes affected

MMP20 (HGNC:7167): (matrix metallopeptidase 20) 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 protein encoded by this gene degrades amelogenin, the major protein component of dental enamel matrix, and thus thought to play a role in tooth enamel formation. A mutation in this gene, which alters the normal splice pattern and results in premature termination of the encoded protein, has been associated with amelogenesis imperfecta. This gene is part of a cluster of MMP genes located on chromosome 11q22.3. [provided by RefSeq, Aug 2011]

MMP20 (HGNC:):

ACMG classification

Verdict is Benign. Variant got -10 ACMG points.

• BP6: Variant 11-102578736-AAAAAAAC-A is Benign according to our data. Variant chr11-102578736-AAAAAAAC-A is described in ClinVar as [Benign]. Clinvar id is 1250384.Status of the report is criteria_provided_single_submitter, 1 stars.
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.748 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MMP20	NM_004771.4	c.1351+296_1351+302delGTTTTTT		intron_variant		ENST00000260228.3	NP_004762.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MMP20	ENST00000260228.3	c.1351+296_1351+302delGTTTTTT		intron_variant		1	NM_004771.4	ENSP00000260228.2
MMP20	ENST00000542305.1	n.249+296_249+302delGTTTTTT		intron_variant		2

Frequencies

GnomAD3 genomes AF: 0.625 AC: 94046 AN: 150454 Hom.: 30073 Cov.: 0

Gnomad AFR AF: 0.755

Gnomad AMI AF: 0.423

Gnomad AMR AF: 0.600

Gnomad ASJ AF: 0.533

Gnomad EAS AF: 0.754

Gnomad SAS AF: 0.491

Gnomad FIN AF: 0.636

Gnomad MID AF: 0.545

Gnomad NFE AF: 0.559

Gnomad OTH AF: 0.596

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

GnomAD4 genome AF: 0.625 AC: 94140 AN: 150572 Hom.: 30116 Cov.: 0 AF XY: 0.627 AC XY: 46059 AN XY: 73458

Gnomad4 AFR AF: 0.755

Gnomad4 AMR AF: 0.600

Gnomad4 ASJ AF: 0.533

Gnomad4 EAS AF: 0.754

Gnomad4 SAS AF: 0.491

Gnomad4 FIN AF: 0.636

Gnomad4 NFE AF: 0.559

Gnomad4 OTH AF: 0.598

ClinVar

Significance: Benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Benign:1

Benign, criteria provided, single submitter

clinical testing

GeneDx

Jun 19, 2021

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Computational scores

Source: dbNSFP v4.3

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs147058509; hg19: chr11-102449467;