rs1057519316

Positions:

• chr19-1496340-T-C

Variant summary

Our verdict is Likely pathogenic. Variant got 8 ACMG points: 8P and 0B. PM2 PP3_Strong PP5_Moderate

The NM_138393.4(REEP6):​c.404T>C​(p.Leu135Pro) variant causes a missense change. The variant allele was found at a frequency of 0.000000685 in 1,460,520 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★).

• Frequency:
  • Genomes: not found (cov: 34)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: REEP6 NM_138393.4 missense
• Clinical Significance: Likely pathogenic criteria provided, single submitter P:2
• Conservation: PhyloP100: 5.86

Genes affected

REEP6 (HGNC:30078): (receptor accessory protein 6) The protein encoded by this gene may be involved in the transport of receptors from the endoplasmic reticulum (ER) to the cell surface. The encoded protein may also play a role in regulating ER membrane structure. This gene is required for the proper development of retinal rods and photoreceptors, with defects in this gene being associated with retinitis pigmentosa 77. [provided by RefSeq, May 2017]

ACMG classification

Verdict is Likely_pathogenic. Variant got 8 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.986
• PP5: Variant 19-1496340-T-C is Pathogenic according to our data. Variant chr19-1496340-T-C is described in ClinVar as [Likely_pathogenic]. Clinvar id is 374989.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr19-1496340-T-C is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
REEP6	NM_001329556.3	c.404T>C	p.Leu135Pro	missense_variant	4/6	ENST00000395479.10	NP_001316485.1
REEP6	NM_138393.4	c.404T>C	p.Leu135Pro	missense_variant	4/5	ENST00000233596.8	NP_612402.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
REEP6	ENST00000395479.10	c.404T>C	p.Leu135Pro	missense_variant	4/6	3	NM_001329556.3	ENSP00000378861.5
REEP6	ENST00000233596.8	c.404T>C	p.Leu135Pro	missense_variant	4/5	1	NM_138393.4	ENSP00000233596.2
REEP6	ENST00000395484.4	n.188T>C		non_coding_transcript_exon_variant	2/5	5		ENSP00000378865.4

Frequencies

GnomAD3 genomes Cov.: 34

GnomAD4 exome AF: 6.85e-7 AC: 1 AN: 1460520 Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0 AN XY: 726488

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: 8.99e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 34

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:2

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Pathogenic:1

Likely pathogenic, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

May 15, 2023

In summary, the currently available evidence indicates that the variant is pathogenic, but additional data are needed to prove that conclusively. Therefore, this variant has been classified as Likely Pathogenic. Experimental studies have shown that this missense change affects REEP6 function (PMID: 27889058, 28475715). Algorithms developed to predict the effect of variants on protein structure and function are not available or were not evaluated for this variant. ClinVar contains an entry for this variant (Variation ID: 374989). This missense change has been observed in individual(s) with retinitis pigmentosa (PMID: 27889058). In at least one individual the data is consistent with being in trans (on the opposite chromosome) from a pathogenic variant. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces leucine, which is neutral and non-polar, with proline, which is neutral and non-polar, at codon 135 of the REEP6 protein (p.Leu135Pro). -

Retinitis pigmentosa 77 Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

Jan 19, 2017

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.76
BayesDel_addAF	Pathogenic	0.50	D
BayesDel_noAF	Pathogenic	0.48
CADD	Pathogenic	29
DANN	Uncertain	1.0
Eigen	Uncertain	0.55
Eigen_PC	Uncertain	0.34
FATHMM_MKL	Uncertain	0.97	D
LIST_S2	Benign	0.81	T
M_CAP	Pathogenic	0.65	D
MetaRNN	Pathogenic	0.99	D
MetaSVM	Pathogenic	1.1	D
MutationAssessor	Pathogenic	4.2	H
PrimateAI	Uncertain	0.66	T
PROVEAN	Pathogenic	-5.8	D
REVEL	Pathogenic	0.80
Sift	Uncertain	0.0010	D
Sift4G	Pathogenic	0.0010	D
Vest4		0.96
MutPred		0.78		Loss of MoRF binding (P = 0.0663);
MVP		0.93
MPC		1.1
ClinPred		0.99	D
GERP RS		5.0
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
gMVP		0.85

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		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: rs1057519316; hg19: chr19-1496339;