Variant 16-368574-C-T details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_006428.5(MRPL28):c.503G>A(p.Arg168Gln) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000876 in 1,598,876 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R168W) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 34)

Exomes 𝑓: 0.0000076 ( 0 hom. )

Consequence

MRPL28
NM_006428.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.58

Variant links:

Genes affected

MRPL28 (HGNC:14484): (mitochondrial ribosomal protein L28) 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, a part of which was originally isolated by its ability to recognize tyrosinase in an HLA-A24-restricted fashion. [provided by RefSeq, Jul 2008]

MRPL28 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
MRPL28	NM_006428.5 linkuse as main transcript	c.503G>A	p.Arg168Gln	missense_variant	4/6	ENST00000199706.13
MRPL28	XM_005255041.3 linkuse as main transcript	c.503G>A	p.Arg168Gln	missense_variant	4/6
MRPL28	XM_011522351.3 linkuse as main transcript	c.503G>A	p.Arg168Gln	missense_variant	4/6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MRPL28	ENST00000199706.13 linkuse as main transcript	c.503G>A	p.Arg168Gln	missense_variant	4/6	1	NM_006428.5	P1

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152224

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000482

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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

GnomAD3 exomes

AF:

0.0000165

AC:

AN:

241778

Hom.:

AF XY:

0.00

AC XY:

AN XY:

130578

show subpopulations

Gnomad AFR exome

AF:

0.0000623

Gnomad AMR exome

AF:

0.0000298

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000346

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000917

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000760

AC:

AN:

1446652

Hom.:

Cov.:

AF XY:

0.00000697

AC XY:

AN XY:

717702

show subpopulations

Gnomad4 AFR exome

AF:

0.0000904

Gnomad4 AMR exome

AF:

0.0000229

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000236

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000363

Gnomad4 OTH exome

AF:

0.0000168

GnomAD4 genome

AF:

0.0000197

AC:

AN:

152224

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74356

show subpopulations

Gnomad4 AFR

AF:

0.0000482

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.000478

Alfa

AF:

0.0000348

Hom.:

Bravo

AF:

0.0000227

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000247

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jan 04, 2024

The c.503G>A (p.R168Q) alteration is located in exon 4 (coding exon 3) of the MRPL28 gene. This alteration results from a G to A substitution at nucleotide position 503, causing the arginine (R) at amino acid position 168 to be replaced by a glutamine (Q). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.16

BayesDel_addAF

Benign

0.0013

BayesDel_noAF

Benign

-0.13

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.012

T;T;T;T;T;T

Eigen

Uncertain

0.52

Eigen_PC

Uncertain

0.37

FATHMM_MKL

Pathogenic

0.99

M_CAP

Benign

0.076

MetaRNN

Uncertain

0.54

D;D;D;D;D;D

MetaSVM

Benign

-0.66

MutationAssessor

Uncertain

2.4

M;M;M;.;.;.

MutationTaster

Benign

1.0

D;D;D;D;D

PrimateAI

Uncertain

0.52

Polyphen

1.0

D;D;D;D;.;.

Vest4

0.78, 0.78

MVP

0.67

ClinPred

0.91

GERP RS

3.6

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

2.2

Varity_R

0.38

gMVP

0.67

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.12

Details are displayed if max score is > 0.2

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

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over