19-41861138-G-A

Position:

• chr19-41861138-G-A

Variant summary

Our verdict is Pathogenic. Variant got 18 ACMG points: 18P and 0B. PVS1 PM2 PP5_Very_Strong

The NM_001022.4(RPS19):​c.98G>A​(p.Trp33Ter) variant causes a stop gained change involving the alteration of a conserved nucleotide. 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 Pathogenic (★★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: RPS19 NM_001022.4 stop_gained
• Clinical Significance: Pathogenic criteria provided, multiple submitters, no conflicts P:3
• Conservation: PhyloP100: 9.28

Genes affected

RPS19 (HGNC:10402): (ribosomal protein S19) 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 40S subunit. The protein belongs to the S19E family of ribosomal proteins. It is located in the cytoplasm. Mutations in this gene cause Diamond-Blackfan anemia (DBA), a constitutional erythroblastopenia characterized by absent or decreased erythroid precursors, in a subset of patients. This suggests a possible extra-ribosomal function for this gene in erythropoietic differentiation and proliferation, in addition to its ribosomal function. Higher expression levels of this gene in some primary colon carcinomas compared to matched normal colon tissues has been observed. 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]

ACMG classification

Verdict is Pathogenic. Variant got 18 ACMG points.

• PVS1: Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant located near the start codon (<100nt), not predicted to undergo nonsense mediated mRNA decay. There are 108 pathogenic variants in the truncated region.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 19-41861138-G-A is Pathogenic according to our data. Variant chr19-41861138-G-A is described in ClinVar as [Pathogenic]. Clinvar id is 6315.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr19-41861138-G-A is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
RPS19	NM_001022.4	c.98G>A	p.Trp33Ter	stop_gained	3/6	ENST00000598742.6
RPS19	NM_001321485.2	c.98G>A	p.Trp33Ter	stop_gained	3/6
RPS19	NM_001321483.2	c.98G>A	p.Trp33Ter	stop_gained	3/6
RPS19	NM_001321484.2	c.98G>A	p.Trp33Ter	stop_gained	3/6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
RPS19	ENST00000598742.6	c.98G>A	p.Trp33Ter	stop_gained	3/6	1	NM_001022.4	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 32

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:3

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Diamond-Blackfan anemia 1 Pathogenic:2

Pathogenic, criteria provided, single submitter	clinical testing	Molecular Diagnostics Laboratory, M Health Fairview: University of Minnesota	May 12, 2021	- -
Pathogenic, no assertion criteria provided	literature only	OMIM	Nov 01, 1999	- -

Diamond-Blackfan anemia Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Invitae

Sep 09, 2019

For these reasons, this variant has been classified as Pathogenic. Loss-of-function variants in RPS19 are known to be pathogenic (PMID: 20960466). This variant has been reported to affect RPS19 protein function (PMID: 18768533). This variant has been observed in individuals with clinical features of Diamond-Blackfan anemia (PMID: 18768533, 10598818). This variant is also described as G120A in the literature. ClinVar contains an entry for this variant (Variation ID: 6315). This variant is not present in population databases (ExAC no frequency). This sequence change creates a premature translational stop signal (p.Trp33*) in the RPS19 gene. It is expected to result in an absent or disrupted protein product. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.59	D
BayesDel_noAF	Pathogenic	0.58
CADD	Pathogenic	44
DANN	Uncertain	1.0
Eigen	Pathogenic	0.76
Eigen_PC	Uncertain	0.58
FATHMM_MKL	Uncertain	0.93	D
MutationTaster	Benign	1.0	A
Vest4		0.85
GERP RS		3.5
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7

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: rs104894716; hg19: chr19-42365207;