chr19-54123563-A-G

Position:

• chr19-54123563-A-G

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 8P and 5B. PP5_Very_Strong BP4 BS2

The NM_015629.4(PRPF31):​c.527+3A>G variant causes a splice donor region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000411 in 1,461,394 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000041 (0 hom.)
• Consequence: PRPF31 NM_015629.4 splice_donor_region, intron
• Scores: Splicing: ADA: 0.8581
• Clinical Significance: Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:4
• Conservation: PhyloP100: 0.294

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]

PRPF31-AS1 (HGNC:40700): (PRPF31 antisense RNA 1)

ACMG classification

Verdict is Uncertain_significance. Variant got 3 ACMG points.

• PP5: Variant 19-54123563-A-G is Pathogenic according to our data. Variant chr19-54123563-A-G is described in ClinVar as [Likely_pathogenic]. Clinvar id is 4360.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr19-54123563-A-G is described in Lovd as [Likely_pathogenic]. Variant chr19-54123563-A-G is described in Lovd as [Pathogenic]. Variant chr19-54123563-A-G is described in Lovd as [Likely_pathogenic]. Variant chr19-54123563-A-G is described in Lovd as [Pathogenic].
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.64). . Strength limited to SUPPORTING due to the PP5.
• BS2: High AC in GnomAdExome4 at 6 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PRPF31	NM_015629.4	c.527+3A>G		splice_donor_region_variant, intron_variant		ENST00000321030.9	NP_056444.3
PRPF31-AS1	XR_007067340.1	n.115T>C		non_coding_transcript_exon_variant	2/3
PRPF31	XM_006723137.5	c.527+3A>G		splice_donor_region_variant, intron_variant			XP_006723200.1
PRPF31	XM_047438587.1	c.527+3A>G		splice_donor_region_variant, intron_variant			XP_047294543.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PRPF31	ENST00000321030.9	c.527+3A>G		splice_donor_region_variant, intron_variant		1	NM_015629.4	ENSP00000324122	P1
PRPF31-AS1	ENST00000452097.1	n.1781T>C		non_coding_transcript_exon_variant	1/4	2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000411 AC: 6 AN: 1461394 Hom.: 0 Cov.: 31 AF XY: 0.00000413 AC XY: 3 AN XY: 727030

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: 0.00000540

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:4

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Retinitis pigmentosa 11 Pathogenic:2

Likely pathogenic, criteria provided, single submitter	research	Ocular Genomics Institute, Massachusetts Eye and Ear	Apr 08, 2021	The PRPF31 c.527+3A>G variant was identified in an individual with retinitis pigmentosa with a presumed dominant inheritance pattern. Through a review of available evidence we were able to apply the following criteria: PM2, PP3, PP1-S. Based on this evidence we have classified this variant as Likely pathogenic. -
Pathogenic, no assertion criteria provided	literature only	OMIM	Mar 01, 2007	- -

not provided Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 23, 2024

This sequence change falls in intron 6 of the PRPF31 gene. It does not directly change the encoded amino acid sequence of the PRPF31 protein. It affects a nucleotide within the consensus splice site. This variant is not present in population databases (gnomAD no frequency). This variant has been observed in individuals with autosomal dominant retinitis pigmentosa (PMID: 11545739, 29957067, 30582903). It has also been observed to segregate with disease in related individuals. This variant is also known as IVS6+3A>G. ClinVar contains an entry for this variant (Variation ID: 4360). Variants that disrupt the consensus splice site are a relatively common cause of aberrant splicing (PMID: 17576681, 9536098). Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may disrupt the consensus splice site. For these reasons, this variant has been classified as Pathogenic. -

Retinal dystrophy Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Blueprint Genetics

Jan 13, 2019

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.64
CADD	Benign	11
DANN	Benign	0.77

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.86
dbscSNV1_RF	Pathogenic	0.74
SpliceAI score (max)		0.060		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: rs587776590; hg19: chr19-54626942;