NM_015629.4:c.3G>C

Variant names:

• chr19-54118281-G-C
• NM_015629.4:c.3G>C

Variant summary

Our verdict is Pathogenic. Variant got 14 ACMG points: 14P and 0B. PVS1 PS1_Moderate PM2 PP5_Moderate

The NM_015629.4(PRPF31):​c.3G>C​(p.Met1?) variant causes a start lost 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: PRPF31 NM_015629.4 start_lost
• Clinical Significance: Pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: 8.59

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 14 ACMG points.

• PVS1: Start lost variant, next in-frame start position is after 11 pathogenic variants. Next in-frame start position is after 59 codons. Genomic position: 54118453. Lost 0.117 part of the original CDS.
• PS1: Another start lost variant in NM_015629.4 (PRPF31) was described as [Likely_pathogenic] in Lovd
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 19-54118281-G-C is Pathogenic according to our data. Variant chr19-54118281-G-C is described in ClinVar as [Pathogenic]. Clinvar id is 2818311.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PRPF31	NM_015629.4	c.3G>C	p.Met1?	start_lost	Exon 2 of 14	ENST00000321030.9	NP_056444.3
PRPF31	XM_006723137.5	c.3G>C	p.Met1?	start_lost	Exon 2 of 14		XP_006723200.1
PRPF31	XM_047438587.1	c.3G>C	p.Met1?	start_lost	Exon 2 of 10		XP_047294543.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PRPF31	ENST00000321030.9	c.3G>C	p.Met1?	start_lost	Exon 2 of 14	1	NM_015629.4	ENSP00000324122.4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 32

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Pathogenic:1

Dec 03, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change affects the initiator methionine of the PRPF31 mRNA. The next in-frame methionine is located at codon 59. This variant is not present in population databases (gnomAD no frequency). Disruption of the initiator codon has been observed in individuals with retinitis pigmentosa (PMID: 28041643; Invitae). Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may create or strengthen a splice site. For these reasons, this variant has been classified as Pathogenic. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.62	D
BayesDel_noAF	Pathogenic	0.40
CADD	Pathogenic	27
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.65	.;D;T;.;T;.
Eigen	Benign	0.026
Eigen_PC	Benign	0.16
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.90	.;.;D;D;D;D
M_CAP	Pathogenic	0.93	D
MetaRNN	Pathogenic	0.99	D;D;D;D;D;D
MetaSVM	Uncertain	0.14	D
PROVEAN	Uncertain	-3.4	D;D;D;D;D;D
REVEL	Pathogenic	0.76
Sift	Pathogenic	0.0	D;D;D;D;D;D
Sift4G	Pathogenic	0.0	D;D;D;D;D;D
Polyphen		0.0	.;B;.;.;.;.
Vest4		0.92
MutPred		0.96		Gain of catalytic residue at M1 (P = 0.0276);Gain of catalytic residue at M1 (P = 0.0276);Gain of catalytic residue at M1 (P = 0.0276);Gain of catalytic residue at M1 (P = 0.0276);Gain of catalytic residue at M1 (P = 0.0276);Gain of catalytic residue at M1 (P = 0.0276);
MVP		0.97
ClinPred		0.99	D
GERP RS		3.7
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.82
gMVP		0.31

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.27		Details are displayed if max score is > 0.2
DS_AG_spliceai		0.27		Position offset: 11

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr19-54621661;