20-17615475-C-T

Position:

chr20-17615475-C-T

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 2P and 6B. PM2BP4_StrongBP6_Moderate

The NM_001365613.2(RRBP1):c.4006G>A(p.Gly1336Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000498 in 1,608,040 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: 𝑓 0.00013 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000041 ( 0 hom. )

Consequence

RRBP1
NM_001365613.2 missense

Scores

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: -0.150

Variant links:

Genes affected

RRBP1 (HGNC:10448): (ribosome binding protein 1) This gene encodes a ribosome-binding protein of the endoplasmic reticulum (ER) membrane. Studies suggest that this gene plays a role in ER proliferation, secretory pathways and secretory cell differentiation, and mediation of ER-microtubule interactions. Alternative splicing has been observed and protein isoforms are characterized by regions of N-terminal decapeptide and C-terminal heptad repeats. Splicing of the tandem repeats results in variations in ribosome-binding affinity and secretory function. The full-length nature of variants which differ in repeat length has not been determined. Pseudogenes of this gene have been identified on chromosomes 3 and 7, and RRBP1 has been excluded as a candidate gene in the cause of Alagille syndrome, the result of a mutation in a nearby gene on chromosome 20p12. [provided by RefSeq, Apr 2012]

RRBP1 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.036372453).

BP6

Variant 20-17615475-C-T is Benign according to our data. Variant chr20-17615475-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 3315394.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
RRBP1	NM_001365613.2 linkuse as main transcript	c.4006G>A	p.Gly1336Ser	missense_variant	23/25	ENST00000377813.6	NP_001352542.1
RRBP1	NM_001042576.2 linkuse as main transcript	c.2707G>A	p.Gly903Ser	missense_variant	24/26		NP_001036041.2
RRBP1	NM_004587.3 linkuse as main transcript	c.2707G>A	p.Gly903Ser	missense_variant	23/25		NP_004578.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
RRBP1	ENST00000377813.6 linkuse as main transcript	c.4006G>A	p.Gly1336Ser	missense_variant	23/25	1	NM_001365613.2	ENSP00000367044	A2	Q9P2E9-1

Frequencies

GnomAD3 genomes

AF:

0.000131

AC:

AN:

152198

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000850

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000735

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.0000780

AC:

AN:

243632

Hom.:

AF XY:

0.0000756

AC XY:

AN XY:

132194

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000428

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000451

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000412

AC:

AN:

1455842

Hom.:

Cov.:

AF XY:

0.0000428

AC XY:

AN XY:

724240

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000277

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:

0.0000387

Gnomad4 OTH exome

AF:

0.0000831

GnomAD4 genome

AF:

0.000131

AC:

AN:

152198

Hom.:

Cov.:

AF XY:

0.000188

AC XY:

AN XY:

74362

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.000850

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000735

Gnomad4 OTH

AF:

0.000478

Alfa

AF:

0.000108

Hom.:

Bravo

AF:

0.0000945

ExAC

AF:

0.0000247

AC:

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Mar 31, 2024

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.075

BayesDel_addAF

Benign

-0.58

BayesDel_noAF

Benign

-0.75

CADD

Benign

1.6

DANN

Benign

0.62

DEOGEN2

Benign

0.063

.;.;T;T;.;.;T

Eigen

Benign

-1.3

Eigen_PC

Benign

-1.3

FATHMM_MKL

Benign

0.049

LIST_S2

Benign

0.66

T;T;T;.;T;.;T

M_CAP

Benign

0.044

MetaRNN

Benign

0.036

T;T;T;T;T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.74

.;.;N;N;.;.;.

MutationTaster

Benign

1.0

N;N;N;N;N

PrimateAI

Benign

0.39

PROVEAN

Benign

-0.61

.;.;N;N;N;N;N

REVEL

Benign

0.012

Sift

Benign

0.22

.;.;T;T;T;T;T

Sift4G

Benign

0.70

T;T;T;T;T;T;T

Polyphen

0.012, 0.093

.;.;B;B;B;B;.

Vest4

0.056

MutPred

0.12

.;.;Gain of phosphorylation at G1336 (P = 0.0014);Gain of phosphorylation at G1336 (P = 0.0014);.;.;.;

MVP

0.35

MPC

0.48

ClinPred

0.040

GERP RS

-1.2

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.018

gMVP

0.050

Splicing

Name

Calibrated prediction

Score

Prediction

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over