19-54128351-C-T

Variant names:

• chr19-54128351-C-T
• rs869312187
• NM_015629.4:c.1120C>T

Variant summary

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

The NM_015629.4(PRPF31):​c.1120C>T​(p.Gln374*) variant causes a stop gained 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 Pathogenic (★★). Synonymous variant affecting the same amino acid position (i.e. Q374Q) has been classified as Benign. Variant results in nonsense mediated mRNA decay.

• Frequency:
  • Genomes: not found (cov: 28)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: PRPF31 NM_015629.4 stop_gained
• Clinical Significance: Pathogenic criteria provided, multiple submitters, no conflicts P:4
• Conservation: PhyloP100: 4.50

Genes affected

PRPF31 (HGNC:15446): (pre-mRNA processing factor 31) This gene encodes a component of the spliceosome complex and is one of several retinitis pigmentosa-causing genes. When the gene product is added to the spliceosome complex, activation occurs.[provided by RefSeq, Jan 2009]

ACMG classification

Verdict is Pathogenic. Variant got 18 ACMG points.

• PVS1: Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 19-54128351-C-T is Pathogenic according to our data. Variant chr19-54128351-C-T is described in ClinVar as [Pathogenic]. Clinvar id is 224758.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr19-54128351-C-T is described in Lovd as [Pathogenic]. Variant chr19-54128351-C-T is described in Lovd as [Likely_pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PRPF31	NM_015629.4	c.1120C>T	p.Gln374*	stop_gained	Exon 11 of 14	ENST00000321030.9	NP_056444.3
PRPF31	XM_006723137.5	c.1120C>T	p.Gln374*	stop_gained	Exon 11 of 14		XP_006723200.1
PRPF31	XM_047438587.1	c.*256C>T		downstream_gene_variant			XP_047294543.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PRPF31	ENST00000321030.9	c.1120C>T	p.Gln374*	stop_gained	Exon 11 of 14	1	NM_015629.4	ENSP00000324122.4

Frequencies

GnomAD3 genomes Cov.: 28

GnomAD4 exome Data not reliable, filtered out with message: AC0;AS_VQSR AF: 0.00 AC: 0 AN: 1396210 Hom.: 0 Cov.: 43 AF XY: 0.00 AC XY: 0 AN XY: 688670

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: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 28

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:4

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not provided Pathogenic:2

Jan 02, 2019

GeneDx

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The Q374X variant in the PRPF31 gene has been reported previously in an individual with retinal dystrophy (Ellingford et al., 2016). This variant is predicted to cause loss of normal protein function either through protein truncation or nonsense-mediated mRNA decay. The Q374X variant is not observed in large population cohorts (Lek et al., 2016). We interpret Q374X as a pathogenic variant. -

Apr 13, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

For these reasons, this variant has been classified as Pathogenic. ClinVar contains an entry for this variant (Variation ID: 224758). This premature translational stop signal has been observed in individual(s) with retinitis pigmentosa (PMID: 26872967, 33946315). This variant is not present in population databases (gnomAD no frequency). This sequence change creates a premature translational stop signal (p.Gln374*) in the PRPF31 gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in PRPF31 are known to be pathogenic (PMID: 18317597, 23950152). -

Retinitis pigmentosa 11 Pathogenic:1

-

Genomics England Pilot Project, Genomics England

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Retinal dystrophy Pathogenic:1

Jan 30, 2015

Centre for Genomic Medicine, Manchester, Central Manchester University Hospitals

Significance: Likely pathogenic

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.62	D
BayesDel_noAF	Pathogenic	0.65
CADD	Pathogenic	51
DANN	Uncertain	1.0
Eigen	Pathogenic	0.94
Eigen_PC	Pathogenic	0.78
FATHMM_MKL	Pathogenic	0.97	D
Vest4		0.86
GERP RS		4.5
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.14		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: rs869312187; hg19: chr19-54631726;