NM_002424.3:c.903-6C>A

Variant names:

• chr11-102715443-G-T
• rs34799325
• NM_002424.3:c.903-6C>A

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2 PP3

The NM_002424.3(MMP8):​c.903-6C>A variant causes a splice region, intron 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. 3/3 splice prediction tools predicting alterations to normal splicing. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 31)
• Consequence: MMP8 NM_002424.3 splice_region, intron
• Scores: Splicing: ADA: 0.9994
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.750
• Publications: 2 publications found

Genes affected

MMP8 (HGNC:7175): (matrix metallopeptidase 8) This gene encodes a member of the matrix metalloproteinase (MMP) family of proteins. These proteins are involved in the breakdown of extracellular matrix in embryonic development, reproduction, and tissue remodeling, as well as in disease processes, such as arthritis and metastasis. Proteolysis at different sites on this protein results in multiple active forms of the enzyme with distinct N-termini. This protein functions in the degradation of type I, II and III collagens. The gene is part of a cluster of MMP genes which localize to chromosome 11q22.3. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jan 2015]

ACMG classification

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: Splicing predictors support a deleterious effect. Scorers claiming Pathogenic: dbscSNV1_ADA, dbscSNV1_RF, max_spliceai. No scorers claiming Uncertain. No scorers claiming Benign.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_002424.3. 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
	MMP8	NM_002424.3	MANE Select	c.903-6C>A		splice_region intron	N/A	NP_002415.1	P22894
	MMP8	NM_001304441.2		c.834-6C>A		splice_region intron	N/A	NP_001291370.1
	MMP8	NM_001304442.2		c.834-6C>A		splice_region intron	N/A	NP_001291371.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MMP8	ENST00000236826.8	TSL:1 MANE Select	c.903-6C>A		splice_region intron	N/A	ENSP00000236826.3	P22894
	MMP8	ENST00000438475.2	TSL:5	c.828-6C>A		splice_region intron	N/A	ENSP00000401004.2	H7C1M3
	MMP8	ENST00000528662.6	TSL:5	n.*880-6C>A		splice_region intron	N/A	ENSP00000431431.2	E9PL87

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 31

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.83
CADD	Benign	19
DANN	Benign	0.36
PhyloP100		-0.75

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Pathogenic	1.0
dbscSNV1_RF	Pathogenic	0.93
SpliceAI score (max)		0.97		Details are displayed if max score is > 0.2
DS_AG_spliceai		0.97		Position offset: -2
DS_AL_spliceai		0.24		Position offset: -6

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

Other links and lift over

dbSNP: rs34799325; hg19: chr11-102586174;