chr14-21328625-G-A

Position:

• chr14-21328625-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_020366.4(RPGRIP1):​c.3097G>A​(p.Glu1033Lys) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000688 in 1,453,690 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 18/23 in silico tools predict a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. E1033Q) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 31)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: RPGRIP1 NM_020366.4 missense, splice_region
• Scores: Splicing: ADA: 0.00007319
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.30

Genes affected

RPGRIP1 (HGNC:13436): (RPGR interacting protein 1) This gene encodes a photoreceptor protein that interacts with retinitis pigmentosa GTPase regulator protein and is a key component of cone and rod photoreceptor cells. Mutations in this gene lead to autosomal recessive congenital blindness. [provided by RefSeq, Oct 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.17433569).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
RPGRIP1	NM_020366.4	c.3097G>A	p.Glu1033Lys	missense_variant, splice_region_variant	19/25	ENST00000400017.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
RPGRIP1	ENST00000400017.7	c.3097G>A	p.Glu1033Lys	missense_variant, splice_region_variant	19/25	1	NM_020366.4	P2

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome AF: 6.88e-7 AC: 1 AN: 1453690 Hom.: 0 Cov.: 28 AF XY: 0.00000138 AC XY: 1 AN XY: 723666

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.0000252

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.: 31

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.067
BayesDel_addAF	Benign	-0.11	T
BayesDel_noAF	Benign	-0.39
CADD	Benign	20
DANN	Benign	0.86
DEOGEN2	Benign	0.015	T;T;T;.;T
Eigen	Benign	-0.85
Eigen_PC	Benign	-0.75
FATHMM_MKL	Benign	0.17	N
LIST_S2	Benign	0.81	T;T;T;T;T
M_CAP	Benign	0.040	D
MetaRNN	Benign	0.17	T;T;T;T;T
MetaSVM	Benign	-0.82	T
MutationAssessor	Benign	0.69	.;.;N;.;.
MutationTaster	Benign	1.0	P;P;P;P;P;P;P
PrimateAI	Benign	0.37	T
PROVEAN	Benign	-0.71	N;N;N;N;N
REVEL	Benign	0.088
Sift	Benign	0.31	T;T;T;T;T
Sift4G	Uncertain	0.026	D;D;D;D;D
Polyphen		0.0050, 0.047, 0.015	.;.;B;B;B
Vest4		0.24
MutPred		0.34		.;.;Gain of ubiquitination at E1033 (P = 0.0082);.;.;
MVP		0.69
MPC		0.077
ClinPred		0.074	T
GERP RS		1.8
Varity_R		0.065
gMVP		0.31

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.000073
dbscSNV1_RF	Benign	0.0
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: rs3748361; hg19: chr14-21796784;