17-39201218-T-C

Position:

• chr17-39201218-T-C

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2 PP3_Moderate

The NM_000981.4(RPL19):​c.11T>C​(p.Leu4Pro) variant causes a missense change. The variant allele was found at a frequency of 0.000000686 in 1,458,512 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: 31)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: RPL19 NM_000981.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 6.01

Genes affected

RPL19 (HGNC:10312): (ribosomal protein L19) 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 L19E family of ribosomal proteins. It is located in the cytoplasm. As is typical for genes encoding ribosomal proteins, there are multiple processed pseudogenes of this gene dispersed through the genome. [provided by RefSeq, Jul 2008]

LOC124903996 (HGNC:):

ACMG classification

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, 0.935

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
RPL19	NM_000981.4	c.11T>C	p.Leu4Pro	missense_variant	2/6	ENST00000225430.9	NP_000972.1
RPL19	NM_001330200.1	c.5T>C	p.Leu2Pro	missense_variant	2/6		NP_001317129.1
LOC124903996	XR_007065745.1			upstream_gene_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
RPL19	ENST00000225430.9	c.11T>C	p.Leu4Pro	missense_variant	2/6	1	NM_000981.4	ENSP00000225430	P4

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome AF: 6.86e-7 AC: 1 AN: 1458512 Hom.: 0 Cov.: 29 AF XY: 0.00 AC XY: 0 AN XY: 725802

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: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 9.01e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 31

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

Labcorp Genetics (formerly Invitae), Labcorp

Feb 27, 2023

This sequence change replaces leucine, which is neutral and non-polar, with proline, which is neutral and non-polar, at codon 4 of the RPL19 protein (p.Leu4Pro). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with RPL19-related conditions. 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. 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. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.99
BayesDel_addAF	Pathogenic	0.23	D
BayesDel_noAF	Uncertain	0.090
CADD	Pathogenic	28
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.64	D;.;.
Eigen	Uncertain	0.40
Eigen_PC	Uncertain	0.40
FATHMM_MKL	Uncertain	0.92	D
LIST_S2	Uncertain	0.96	D;.;D
M_CAP	Uncertain	0.18	D
MetaRNN	Pathogenic	0.94	D;D;D
MetaSVM	Uncertain	0.072	D
MutationAssessor	Uncertain	2.8	M;.;.
MutationTaster	Benign	1.0	D;D;D;D
PrimateAI	Pathogenic	0.92	D
PROVEAN	Pathogenic	-5.8	D;.;.
REVEL	Uncertain	0.50
Sift	Pathogenic	0.0	D;.;.
Sift4G	Uncertain	0.016	D;D;D
Polyphen		0.40	B;.;.
Vest4		0.85
MutPred		0.87		Loss of stability (P = 0.0315);.;.;
MVP		0.55
MPC		2.1
ClinPred		0.99	D
GERP RS		4.7
Varity_R		0.93
gMVP		0.99

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: rs1394096367; hg19: chr17-37357471;