6-43675247-C-T

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BP4_Strong

The NM_018135.4(MRPS18A):c.401G>A(p.Arg134Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000282 in 1,525,248 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000028 ( 0 hom. )

Consequence

MRPS18A
NM_018135.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -2.35

Publications

1 publications found

Variant links:

Genes affected

MRPS18A (HGNC:14515): (mitochondrial ribosomal protein S18A) 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 28S subunit protein that belongs to the ribosomal protein S18P family. The encoded protein is one of three that has significant sequence similarity to bacterial S18 proteins. The primary sequences of the three human mitochondrial S18 proteins are no more closely related to each other than they are to the prokaryotic S18 proteins. A pseudogene corresponding to this gene is found on chromosome 3p. Alternative splicing results in multiple transcript variants.[provided by RefSeq, Jul 2010]

MRPS18A links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -4 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.019961119).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_018135.4. 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
	MRPS18A	NM_018135.4	MANE Select	c.401G>A	p.Arg134Gln	missense	Exon 5 of 6	NP_060605.1	Q9NVS2-1
	MRPS18A	NM_001193343.2		c.376+247G>A		intron	N/A	NP_001180272.1	Q9NVS2-3

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
MRPS18A	ENST00000372133.8	TSL:1 MANE Select	c.401G>A	p.Arg134Gln	missense	Exon 5 of 6	ENSP00000361206.3	Q9NVS2-1
MRPS18A	ENST00000427312.1	TSL:1	c.623G>A	p.Arg208Gln	missense	Exon 4 of 5	ENSP00000398679.1	Q5QPA5
MRPS18A	ENST00000924155.1		c.515G>A	p.Arg172Gln	missense	Exon 3 of 4	ENSP00000594214.1

Frequencies

GnomAD3 genomes

AF:

0.0000329

AC:

AN:

152168

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000483

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.000478

GnomAD2 exomes

AF:

0.000110

AC:

AN:

182064

AF XY:

0.000146

show subpopulations

Gnomad AFR exome

AF:

0.000130

Gnomad AMR exome

AF:

0.000588

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.0000574

Gnomad NFE exome

AF:

0.0000341

Gnomad OTH exome

AF:

0.000240

GnomAD4 exome

AF:

0.0000277

AC:

AN:

1372962

Hom.:

Cov.:

AF XY:

0.0000312

AC XY:

AN XY:

673588

show subpopulations

African (AFR)

AF:

0.000164

AC:

AN:

30456

American (AMR)

AF:

0.000489

AC:

AN:

30698

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

20254

East Asian (EAS)

AF:

0.00

AC:

AN:

38788

South Asian (SAS)

AF:

0.00

AC:

AN:

71116

European-Finnish (FIN)

AF:

0.0000199

AC:

AN:

50224

Middle Eastern (MID)

AF:

0.000752

AC:

AN:

5320

European-Non Finnish (NFE)

AF:

0.00000841

AC:

AN:

1069602

Other (OTH)

AF:

0.0000708

AC:

AN:

56504

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.454

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.0000328

AC:

AN:

152286

Hom.:

Cov.:

AF XY:

0.0000537

AC XY:

AN XY:

74460

show subpopulations

African (AFR)

AF:

0.0000481

AC:

AN:

41548

American (AMR)

AF:

0.000131

AC:

AN:

15308

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5170

South Asian (SAS)

AF:

0.00

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10618

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68024

Other (OTH)

AF:

0.000473

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.465

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.0000277

Hom.:

Bravo

AF:

0.0000340

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000108

AC:

ClinVar

ClinVar submissions

Significance:Uncertain significance

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

not specified (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.067

BayesDel_addAF

Benign

-0.47

BayesDel_noAF

Benign

-0.56

CADD

Benign

7.3

(source)

DANN

Benign

0.97

DEOGEN2

Benign

0.015

Eigen

Benign

-1.1

Eigen_PC

Benign

-1.0

FATHMM_MKL

Benign

0.067

LIST_S2

Benign

0.73

M_CAP

Benign

0.0036

MetaRNN

Benign

0.020

MetaSVM

Benign

-0.98

MutationAssessor

Benign

1.3

PhyloP100

-2.4

PrimateAI

Benign

0.22

PROVEAN

Benign

-0.34

REVEL

Benign

0.013

Sift

Benign

0.74

Sift4G

Benign

0.74

Polyphen

0.0050

Vest4

0.066

MVP

0.32

MPC

0.14

ClinPred

0.027

GERP RS

-4.2

Varity_R

0.028

gMVP

0.30

Mutation Taster

=97/3

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.030

Details are displayed if max score is > 0.2

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

Publications

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over