17-39200346-T-G

Variant names:

• chr17-39200346-T-G
• rs1170075353
• NM_000981.4:c.2T>G

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PVS1_Supporting PM2

The NM_000981.4(RPL19):​c.2T>G​(p.Met1?) variant causes a start lost change. The variant was absent in control chromosomes in GnomAD project. 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: 0.0000050 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: RPL19 NM_000981.4 start_lost
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 6.04

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 3 ACMG points.

• PVS1: Start lost variant, no pathogenic variants between lost start and next in-frame start position. Next in-frame start position is after 3 codons. Genomic position: 39201214. Lost 0.012 part of the original CDS.
• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RPL19	NM_000981.4	c.2T>G	p.Met1?	start_lost	Exon 1 of 6	ENST00000225430.9	NP_000972.1
RPL19	NM_001330200.1	c.-399T>G		5_prime_UTR_variant	Exon 1 of 6		NP_001317129.1
LOC124903996	XR_007065745.1	n.763A>C		non_coding_transcript_exon_variant	Exon 2 of 2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RPL19	ENST00000225430.9	c.2T>G	p.Met1?	start_lost	Exon 1 of 6	1	NM_000981.4	ENSP00000225430.4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Data not reliable, filtered out with message: AS_VQSR AF: 0.00000496 AC: 7 AN: 1412562 Hom.: 0 Cov.: 31 AF XY: 0.00000572 AC XY: 4 AN XY: 699720

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.0000270

Gnomad4 SAS exome AF: 0.0000125

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000367

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

Dec 04, 2023

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change affects the initiator methionine of the RPL19 mRNA. The next in-frame methionine is located at codon 3. 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. ClinVar contains an entry for this variant (Variation ID: 964835). 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
BayesDel_addAF	Pathogenic	0.47	D
BayesDel_noAF	Pathogenic	0.44
CADD	Uncertain	24
DANN	Uncertain	0.98
DEOGEN2	Uncertain	0.49	T;.
Eigen	Uncertain	0.58
Eigen_PC	Uncertain	0.62
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.90	D;D
M_CAP	Pathogenic	0.62	D
MetaRNN	Pathogenic	0.97	D;D
MetaSVM	Benign	-0.73	T
PROVEAN	Uncertain	-4.2	D;.
REVEL	Uncertain	0.52
Sift	Pathogenic	0.0	D;.
Sift4G	Pathogenic	0.0	D;D
Polyphen		0.82	P;.
Vest4		0.92
MutPred		0.80		Gain of methylation at M1 (P = 0.0221);Gain of methylation at M1 (P = 0.0221);
MVP		0.72
ClinPred		1.0	D
GERP RS		5.8
Varity_R		0.98
gMVP		0.83

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

Other links and lift over

dbSNP: rs1170075353; hg19: chr17-37356599;