Variant 3-139019904-C-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_001013650.2(PRR23B):c.758G>C(p.Arg253Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000686 in 1,457,902 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 13/20 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: 0.0000069 ( 1 hom. )

Consequence

PRR23B
NM_001013650.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.394

Variant links:

Genes affected

PRR23B (HGNC:33764): (proline rich 23B)

PRR23B links:

MRPS22 (HGNC:14508): (mitochondrial ribosomal protein S22) 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 does not seem to have a counterpart in prokaryotic and fungal-mitochondrial ribosomes. This gene lies telomeric of and is transcribed in the opposite direction from the forkhead box L2 gene. A pseudogene corresponding to this gene is found on chromosome Xq. [provided by RefSeq, Jul 2008]

MRPS22 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=0.20659977).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PRR23B	NM_001013650.2 linkuse as main transcript	c.758G>C	p.Arg253Pro	missense_variant	1/1	ENST00000329447.5	NP_001013672.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PRR23B	ENST00000329447.5 linkuse as main transcript	c.758G>C	p.Arg253Pro	missense_variant	1/1		NM_001013650.2	ENSP00000328768	P1
MRPS22	ENST00000495075.5 linkuse as main transcript	c.-143+13809C>G		intron_variant		1		ENSP00000418008	P4	P82650-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000410

AC:

AN:

243982

Hom.:

AF XY:

0.00000755

AC XY:

AN XY:

132532

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000907

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000686

AC:

AN:

1457902

Hom.:

Cov.:

AF XY:

0.00000552

AC XY:

AN XY:

725222

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000227

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000540

Gnomad4 OTH exome

AF:

0.0000498

GnomAD4 genome

Cov.:

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

Dec 19, 2022

The c.758G>C (p.R253P) alteration is located in exon 1 (coding exon 1) of the PRR23B gene. This alteration results from a G to C substitution at nucleotide position 758, causing the arginine (R) at amino acid position 253 to be replaced by a proline (P). 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

-0.20

BayesDel_noAF

Benign

-0.52

CADD

Benign

DANN

Benign

0.94

DEOGEN2

Benign

0.075

Eigen

Benign

-0.47

Eigen_PC

Benign

-0.72

FATHMM_MKL

Benign

0.075

LIST_S2

Benign

0.39

M_CAP

Benign

0.0024

MetaRNN

Benign

0.21

MetaSVM

Benign

-0.99

MutationAssessor

Benign

1.9

MutationTaster

Benign

1.0

N;N

PrimateAI

Uncertain

0.54

PROVEAN

Uncertain

-2.7

REVEL

Benign

0.070

Sift

Benign

0.30

Sift4G

Benign

0.25

Polyphen

1.0

Vest4

0.21

MutPred

0.60

Gain of glycosylation at R253 (P = 0.0046);

MVP

0.030

MPC

1.7

ClinPred

0.56

GERP RS

0.86

Varity_R

0.34

gMVP

0.22

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

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