rs1555965712

Variant names:

• chrX-38304793-G-T
• rs1555965712
• NM_001034853.2:c.779-3C>A

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 3P and 1B. PM2 PP5 BP4

The NM_001034853.2(RPGR):​c.779-3C>A variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 2/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely pathogenic (no stars). The gene RPGR is included in the ClinGen Criteria Specification Registry.

• Frequency: Genomes: not found (cov: 23)
• Consequence: RPGR NM_001034853.2 splice_region, intron
• Scores: Splicing: ADA: 0.8410
• Clinical Significance: Likely pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 2.06
• Publications: 0 publications found

Genes affected

RPGR (HGNC:10295): (retinitis pigmentosa GTPase regulator) This gene encodes a protein with a series of six RCC1-like domains (RLDs), characteristic of the highly conserved guanine nucleotide exchange factors. The encoded protein is found in the Golgi body and interacts with RPGRIP1. This protein localizes to the outer segment of rod photoreceptors and is essential for their viability. Mutations in this gene have been associated with X-linked retinitis pigmentosa (XLRP). Multiple alternatively spliced transcript variants that encode different isoforms of this gene have been reported, but the full-length natures of only some have been determined. [provided by RefSeq, Dec 2008]

RPGR Gene-Disease associations (from GenCC):

• retinitis pigmentosa 3

  Inheritance: XL Classification: DEFINITIVE, STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae), Ambry Genetics, PanelApp Australia
• RPGR-related retinopathy

  Inheritance: XL Classification: DEFINITIVE Submitted by: ClinGen
• primary ciliary dyskinesia-retinitis pigmentosa syndrome

  Inheritance: XL Classification: STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet
• cone-rod dystrophy

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• primary ciliary dyskinesia

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• retinitis pigmentosa

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• macular degeneration, X-linked atrophic

  Inheritance: XL Classification: LIMITED Submitted by: G2P

ENSG00000250349 (HGNC:):

ACMG classification

Specifications for RPGR are available in the ClinGen Criteria Specification Registry and recommended for reference when assigning criteria.

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant X-38304793-G-T is Pathogenic according to our data. Variant chrX-38304793-G-T is described in ClinVar as Likely_pathogenic. ClinVar VariationId is 438147.Status of the report is no_assertion_criteria_provided, 0 stars.
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.48). . Strength limited to SUPPORTING due to the PP5.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001034853.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	RPGR	NM_001034853.2	MANE Select	c.779-3C>A		splice_region intron	N/A	NP_001030025.1	Q92834-6
	RPGR	NM_000328.3		c.779-3C>A		splice_region intron	N/A	NP_000319.1	Q92834-2
	RPGR	NM_001367245.1		c.776-3C>A		splice_region intron	N/A	NP_001354174.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	RPGR	ENST00000645032.1	MANE Select	c.779-3C>A		splice_region intron	N/A	ENSP00000495537.1	Q92834-6
	ENSG00000250349	ENST00000465127.1	TSL:5	c.172-361328G>T		intron	N/A	ENSP00000417050.1	B4E171
	RPGR	ENST00000494841.1	TSL:1	n.39C>A		non_coding_transcript_exon	Exon 1 of 4

Frequencies

GnomAD3 genomes Cov.: 23

GnomAD4 exome Cov.: 29

GnomAD4 genome Cov.: 23

ClinVar

ClinVar submissions

Significance: Likely pathogenic

Revision: no assertion criteria provided

Pathogenic	VUS	Benign	Condition
1	-	-	Retinitis pigmentosa (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.48
CADD	Benign	15
DANN	Benign	0.55
PhyloP100		2.1
PromoterAI		-0.025	Neutral
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		2.1
Mutation Taster		=0/100	disease causing (ClinVar)

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.84
dbscSNV1_RF	Benign	0.57
SpliceAI score (max)		0.85		Details are displayed if max score is > 0.2
DS_AL_spliceai		0.85		Position offset: -3

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

dbSNP: rs1555965712;

hg19: chrX-38164046;