2-27848037-T-G

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_022128.3(RBKS):c.283A>C(p.Thr95Pro) variant causes a missense change. The variant allele was found at a frequency of 0.0000038 in 1,315,270 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000038 ( 0 hom. )

Consequence

RBKS
NM_022128.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.92

Variant links:

Genes affected

RBKS (HGNC:30325): (ribokinase) This gene encodes a member of the carbohydrate kinase PfkB family. The encoded protein phosphorylates ribose to form ribose-5-phosphate in the presence of ATP and magnesium as a first step in ribose metabolism. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Dec 2013]

RBKS links:

MRPL33 (HGNC:14487): (mitochondrial ribosomal protein L33) 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. Alternatively spliced transcript variants encoding different isoforms have been described. [provided by RefSeq, Jul 2008]

MRPL33 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.92

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
RBKS	NM_022128.3 linkuse as main transcript	c.283A>C	p.Thr95Pro	missense_variant	3/8	ENST00000302188.8
RBKS	NM_001287580.2 linkuse as main transcript	c.82A>C	p.Thr28Pro	missense_variant	4/9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
RBKS	ENST00000302188.8 linkuse as main transcript	c.283A>C	p.Thr95Pro	missense_variant	3/8	1	NM_022128.3	P1	Q9H477-1
RBKS	ENST00000449378.1 linkuse as main transcript	c.*1210A>C		3_prime_UTR_variant, NMD_transcript_variant	4/9	1
MRPL33	ENST00000448427.1 linkuse as main transcript	c.165-46496T>G		intron_variant, NMD_transcript_variant		4

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000249

AC:

AN:

201170

Hom.:

AF XY:

0.00

AC XY:

AN XY:

107736

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000176

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000380

AC:

AN:

1315270

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

657254

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000127

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:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Alfa

AF:

0.0000936

Hom.:

Bravo

AF:

0.00000378

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 19, 2024

The c.283A>C (p.T95P) alteration is located in exon 3 (coding exon 3) of the RBKS gene. This alteration results from a A to C substitution at nucleotide position 283, causing the threonine (T) at amino acid position 95 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

0.17

BayesDel_addAF

Pathogenic

0.19

BayesDel_noAF

Pathogenic

0.31

Cadd

Pathogenic

Dann

Uncertain

1.0

DEOGEN2

Uncertain

0.74

Eigen

Pathogenic

0.76

Eigen_PC

Pathogenic

0.71

FATHMM_MKL

Uncertain

0.95

LIST_S2

Benign

0.69

M_CAP

Uncertain

0.21

MetaRNN

Pathogenic

0.92

MetaSVM

Uncertain

0.49

MutationAssessor

Uncertain

2.7

MutationTaster

Benign

1.0

D;D

PrimateAI

Uncertain

0.52

PROVEAN

Pathogenic

-4.7

REVEL

Pathogenic

0.91

Sift

Uncertain

0.0080

Sift4G

Uncertain

0.0070

Polyphen

1.0

Vest4

0.76

MutPred

0.71

Gain of sheet (P = 0.0827);

MVP

0.89

MPC

0.28

ClinPred

0.95

GERP RS

5.2

Varity_R

0.95

gMVP

0.93

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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