2-42644174-A-C

Variant names:

• chr2-42644174-A-C
• NM_001330442.2:c.429A>C
• MTA3 p.Leu143Leu

Variant summary

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

The NM_001330442.2(MTA3):​c.429A>C​(p.Leu143Leu) 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.

• Frequency: Genomes: not found (cov: 32)
• Consequence: MTA3 NM_001330442.2 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.508
• Publications: 0 publications found

Genes affected

MTA3 (HGNC:23784): (metastasis associated 1 family member 3) Predicted to enable histone deacetylase binding activity; transcription coactivator activity; and transcription corepressor activity. Involved in negative regulation of transcription, DNA-templated. Located in nucleoplasm. Part of NuRD complex. [provided by Alliance of Genome Resources, Apr 2022]

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=-0.8).
• BP7: Synonymous conserved (PhyloP=-0.508 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001330442.2. 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
	MTA3	NM_001330442.2	MANE Select	c.429A>C	p.Leu143Leu	synonymous	Exon 6 of 17	NP_001317371.1	Q9BTC8-1
	MTA3	NM_001330443.2		c.429A>C	p.Leu143Leu	synonymous	Exon 6 of 17	NP_001317372.1
	MTA3	NM_001282755.2		c.261A>C	p.Leu87Leu	synonymous	Exon 7 of 18	NP_001269684.1	F6RRE2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MTA3	ENST00000405094.2	TSL:5 MANE Select	c.429A>C	p.Leu143Leu	synonymous	Exon 6 of 17	ENSP00000385823.1	Q9BTC8-1
	MTA3	ENST00000406652.5	TSL:1	c.261A>C	p.Leu87Leu	synonymous	Exon 6 of 17	ENSP00000384249.1	F6RRE2
	MTA3	ENST00000407270.7	TSL:1	c.429A>C	p.Leu143Leu	synonymous	Exon 6 of 14	ENSP00000385045.3	Q9BTC8-2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 29

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.80
CADD	Benign	1.7
DANN	Benign	0.69
PhyloP100		-0.51
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Mutation Taster		=100/0	polymorphism

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

hg19: chr2-42871314;