2-101004238-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 1P and 0B. PP3

The NM_000993.5(RPL31):c.188G>A(p.Arg63His) variant causes a missense change. The variant allele was found at a frequency of 0.00000684 in 1,461,790 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: 0.0000068 (0 hom.)
• Consequence: RPL31 NM_000993.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 6.51

Genes affected

RPL31 (HGNC:10334): (ribosomal protein L31) Ribosomes, the organelles that catalyze protein synthesis, consist of a small 40S subunit and a large 60S subunit. Together these subunits are composed of 4 RNA species and approximately 80 structurally distinct proteins. This gene encodes a ribosomal protein that is a component of the 60S subunit. The protein belongs to the L31E family of ribosomal proteins. It is located in the cytoplasm. Higher levels of expression of this gene in familial adenomatous polyps compared to matched normal tissues have been observed. As is typical for genes encoding ribosomal proteins, there are multiple processed pseudogenes of this gene dispersed through the genome. Alternatively spliced transcript variants encoding distinct isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PP3: MetaRNN computational evidence supports a deleterious effect, 0.75

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
RPL31	NM_000993.5	c.188G>A	p.Arg63His	missense_variant	3/5	ENST00000264258.8
RPL31	NM_001098577.3	c.188G>A	p.Arg63His	missense_variant	3/5
RPL31	NM_001099693.2	c.188G>A	p.Arg63His	missense_variant	3/4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
RPL31	ENST00000264258.8	c.188G>A	p.Arg63His	missense_variant	3/5	1	NM_000993.5	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.00000399 AC: 1 AN: 250936 Hom.: 0 AF XY: 0.00 AC XY: 0 AN XY: 135804

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: 0.0000327

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000684 AC: 10 AN: 1461790 Hom.: 0 Cov.: 31 AF XY: 0.00000963 AC XY: 7 AN XY: 727208

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000116

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000809

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Jul 24, 2023

In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be tolerated. This variant has not been reported in the literature in individuals affected with RPL31-related conditions. This variant is present in population databases (no rsID available, gnomAD 0.003%). This sequence change replaces arginine, which is basic and polar, with histidine, which is basic and polar, at codon 63 of the RPL31 protein (p.Arg63His). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.99
BayesDel_addAF	Uncertain	0.090	D
BayesDel_noAF	Uncertain	-0.010
Cadd	Pathogenic	27
Dann	Uncertain	0.99
DEOGEN2	Benign	0.36	T;T;.;.;T;T;.;.;T
Eigen	Uncertain	0.25
Eigen_PC	Uncertain	0.33
FATHMM_MKL	Uncertain	0.97	D
M_CAP	Benign	0.045	D
MetaRNN	Pathogenic	0.75	D;D;D;D;D;D;D;D;D
MetaSVM	Uncertain	-0.19	T
MutationAssessor	Benign	1.1	L;.;L;L;L;.;.;.;.
MutationTaster	Benign	1.0	D;D;D;D;D;D;D;D
PrimateAI	Pathogenic	0.86	D
PROVEAN	Uncertain	-2.5	N;N;N;N;N;N;N;N;N
REVEL	Benign	0.20
Sift	Benign	0.28	T;T;T;T;T;T;T;T;T
Sift4G	Benign	0.30	T;T;T;T;T;T;T;T;T
Polyphen		0.0010	B;B;.;.;B;B;D;.;B
Vest4		0.48
MutPred		0.65		Loss of MoRF binding (P = 0.003);Loss of MoRF binding (P = 0.003);Loss of MoRF binding (P = 0.003);Loss of MoRF binding (P = 0.003);Loss of MoRF binding (P = 0.003);Loss of MoRF binding (P = 0.003);Loss of MoRF binding (P = 0.003);Loss of MoRF binding (P = 0.003);Loss of MoRF binding (P = 0.003);
MVP		0.75
MPC		1.4
ClinPred		0.96	D
GERP RS		4.2
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.22
gMVP		0.65

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

Other links and lift over

dbSNP: rs1230284558; hg19: chr2-101620700;