Variant 2-99195587-A-G details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_145212.4(MRPL30):c.368A>G(p.Lys123Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000207 in 1,452,592 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000021 ( 0 hom. )

Consequence

MRPL30
NM_145212.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.70

Variant links:

Genes affected

MRPL30 (HGNC:14036): (mitochondrial ribosomal protein L30) 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. Alternative splicing results in multiple transcript variants. Pseudogenes corresponding to this gene are found on chromosomes 6p and 12p. Read-through transcription also exists between this gene and the neighboring upstream lipoyltransferase 1 (LIPT1) gene. [provided by RefSeq, Mar 2011]

MRPL30 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.10892406).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MRPL30	NM_145212.4 linkuse as main transcript	c.368A>G	p.Lys123Arg	missense_variant	6/6	ENST00000338148.8	NP_660213.1
MRPL30	NR_028356.2 linkuse as main transcript	n.461A>G		non_coding_transcript_exon_variant	6/7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MRPL30	ENST00000338148.8 linkuse as main transcript	c.368A>G	p.Lys123Arg	missense_variant	6/6	1	NM_145212.4	ENSP00000338057	P1	Q8TCC3-1
MRPL30	ENST00000465432.1 linkuse as main transcript	n.275A>G		non_coding_transcript_exon_variant	4/5	5
MRPL30	ENST00000409841.1 linkuse as main transcript	c.368A>G	p.Lys123Arg	missense_variant, NMD_transcript_variant	5/6	5		ENSP00000386752		Q8TCC3-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000415

AC:

AN:

241220

Hom.:

AF XY:

0.00

AC XY:

AN XY:

130594

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000564

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000207

AC:

AN:

1452592

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

722604

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000253

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000180

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Bravo

AF:

0.00000378

ExAC

AF:

0.00000824

AC:

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

Oct 20, 2023

The c.368A>G (p.K123R) alteration is located in exon 6 (coding exon 5) of the MRPL30 gene. This alteration results from a A to G substitution at nucleotide position 368, causing the lysine (K) at amino acid position 123 to be replaced by an arginine (R). 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

0.089

BayesDel_addAF

Benign

-0.17

BayesDel_noAF

Benign

-0.48

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.023

Eigen

Benign

-0.31

Eigen_PC

Benign

-0.22

FATHMM_MKL

Uncertain

0.85

M_CAP

Benign

0.010

MetaRNN

Benign

0.11

MetaSVM

Benign

-0.99

MutationAssessor

Benign

1.8

MutationTaster

Benign

0.78

D;D;D

PrimateAI

Benign

0.39

PROVEAN

Benign

-1.4

REVEL

Benign

0.033

Sift

Benign

0.073

Sift4G

Benign

0.13

Polyphen

0.011

Vest4

0.14

MutPred

0.27

Loss of methylation at K123 (P = 0.0253);

MVP

0.22

MPC

0.069

ClinPred

0.20

GERP RS

2.1

Varity_R

0.046

gMVP

0.19

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.14

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