3-131469533-TACACACACACACAC-TACACACACACACACACAC

Variant names:

• chr3-131469533-T-TACAC
• rs3830301
• NM_007208.4:c.816+159_816+162dupGTGT

Variant summary

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

The NM_007208.4(MRPL3):​c.816+159_816+162dupGTGT variant causes a intron change involving the alteration of a non-conserved nucleotide. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.00049 (0 hom., cov: 0)
• Consequence: MRPL3 NM_007208.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.00
• Publications: 1 publications found

Genes affected

MRPL3 (HGNC:10379): (mitochondrial ribosomal protein L3) Mammalian mitochondrial ribosomal proteins are encoded by nuclear genes and help in protein synthesis within the mitochondrion. Mitochondrial ribosomes (mitoribosomes) consist of a small 28S subunit and a large 39S subunit. They have an estimated 75% protein to rRNA composition compared to prokaryotic ribosomes, where this ratio is reversed. Another difference between mammalian mitoribosomes and prokaryotic ribosomes is that the latter contain a 5S rRNA. Among different species, the proteins comprising the mitoribosome differ greatly in sequence, and sometimes in biochemical properties, which prevents easy recognition by sequence homology. This gene encodes a 39S subunit protein that belongs to the L3P ribosomal protein family. A pseudogene corresponding to this gene is found on chromosome 13q. [provided by RefSeq, Jul 2008]

MRPL3 Gene-Disease associations (from GenCC):

• combined oxidative phosphorylation defect type 9

  Inheritance: AR Classification: STRONG, LIMITED Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)
• mitochondrial disease

  Inheritance: AR Classification: MODERATE Submitted by: ClinGen

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_007208.4. 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
	MRPL3	NM_007208.4	MANE Select	c.816+159_816+162dupGTGT		intron	N/A	NP_009139.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MRPL3	ENST00000264995.8	TSL:1 MANE Select	c.816+162_816+163insGTGT		intron	N/A	ENSP00000264995.2
	MRPL3	ENST00000425847.6	TSL:2	c.897+162_897+163insGTGT		intron	N/A	ENSP00000398536.2
	MRPL3	ENST00000511168.5	TSL:2	c.858+162_858+163insGTGT		intron	N/A	ENSP00000424107.1

Frequencies

GnomAD3 genomes AF: 0.000483 AC: 71 AN: 146888 Hom.: 0 Cov.: 0

Gnomad AFR AF: 0.000225

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000681

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00271

Gnomad SAS AF: 0.00259

Gnomad FIN AF: 0.000302

Gnomad MID AF: 0.00333

Gnomad NFE AF: 0.000347

Gnomad OTH AF: 0.00

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

GnomAD4 genome AF: 0.000490 AC: 72 AN: 147000 Hom.: 0 Cov.: 0 AF XY: 0.000530 AC XY: 38 AN XY: 71702

African (AFR) AF: 0.000274 AC: 11 AN: 40104

American (AMR) AF: 0.000680 AC: 10 AN: 14710

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3402

East Asian (EAS) AF: 0.00272 AC: 13 AN: 4782

South Asian (SAS) AF: 0.00259 AC: 12 AN: 4628

European-Finnish (FIN) AF: 0.000302 AC: 3 AN: 9942

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 280

European-Non Finnish (NFE) AF: 0.000347 AC: 23 AN: 66262

Other (OTH) AF: 0.00 AC: 0 AN: 1998

Alfa AF: 0.000465 Hom.: 533

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		0.0

Splicing

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

Other links and lift over

dbSNP: rs3830301; hg19: chr3-131188377;