chr10-93593863-C-A

Position:

chr10-93593863-C-A

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 2P and 7B. PM1BP4_ModerateBS1_SupportingBS2

The NM_006744.4(RBP4):c.528G>T(p.Glu176Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000373 in 1,612,592 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.00018 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00039 ( 2 hom. )

Consequence

RBP4
NM_006744.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 0.0250

Variant links:

Genes affected

RBP4 (HGNC:9922): (retinol binding protein 4) This protein belongs to the lipocalin family and is the specific carrier for retinol (vitamin A alcohol) in the blood. It delivers retinol from the liver stores to the peripheral tissues. In plasma, the RBP-retinol complex interacts with transthyretin which prevents its loss by filtration through the kidney glomeruli. A deficiency of vitamin A blocks secretion of the binding protein posttranslationally and results in defective delivery and supply to the epidermal cells. [provided by RefSeq, Jul 2008]

RBP4 links:

FFAR4 (HGNC:19061): (free fatty acid receptor 4) This gene encodes a G protein-coupled receptor (GPR) which belongs to the rhodopsin family of GPRs. The encoded protein functions as a receptor for free fatty acids, including omega-3, and participates in suppressing anti-inflammatory responses and insulin sensitizing. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Feb 2012]

FFAR4 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -5 ACMG points.

PM1

In a disulfide_bond (size 156) in uniprot entity RET4_HUMAN there are 11 pathogenic changes around while only 0 benign (100%) in NM_006744.4

BP4

Computational evidence support a benign effect (MetaRNN=0.10942677).

BS1

Variant frequency is greater than expected in population amr. gnomad4 allele frequency = 0.000184 (28/152200) while in subpopulation AMR AF= 0.000523 (8/15288). AF 95% confidence interval is 0.00026. There are 0 homozygotes in gnomad4. There are 15 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

BS2

High Homozygotes in GnomAdExome4 at 2 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
RBP4	NM_006744.4 linkuse as main transcript	c.528G>T	p.Glu176Asp	missense_variant	5/6	ENST00000371464.8
RBP4	NM_001323517.1 linkuse as main transcript	c.528G>T	p.Glu176Asp	missense_variant	5/6
RBP4	NM_001323518.2 linkuse as main transcript	c.522G>T	p.Glu174Asp	missense_variant	5/6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris
RBP4	ENST00000371464.8 linkuse as main transcript	c.528G>T	p.Glu176Asp	missense_variant	5/6	1	NM_006744.4	P1
RBP4	ENST00000371467.5 linkuse as main transcript	c.528G>T	p.Glu176Asp	missense_variant	5/6	5		P1
RBP4	ENST00000371469.2 linkuse as main transcript	c.522G>T	p.Glu174Asp	missense_variant	5/6	5
FFAR4	ENST00000604414.1 linkuse as main transcript	c.697-10211C>A		intron_variant		3

Frequencies

GnomAD3 genomes

AF:

0.000184

AC:

AN:

152200

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000724

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000523

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:

0.000221

Gnomad OTH

AF:

0.000955

GnomAD3 exomes

AF:

0.000287

AC:

AN:

251128

Hom.:

AF XY:

0.000302

AC XY:

AN XY:

135746

show subpopulations

Gnomad AFR exome

AF:

0.0000616

Gnomad AMR exome

AF:

0.000434

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.0000467

Gnomad NFE exome

AF:

0.000475

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.000392

AC:

573

AN:

1460392

Hom.:

Cov.:

AF XY:

0.000391

AC XY:

284

AN XY:

726504

show subpopulations

Gnomad4 AFR exome

AF:

0.0000598

Gnomad4 AMR exome

AF:

0.000649

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.0000188

Gnomad4 NFE exome

AF:

0.000478

Gnomad4 OTH exome

AF:

0.000166

GnomAD4 genome

AF:

0.000184

AC:

AN:

152200

Hom.:

Cov.:

AF XY:

0.000202

AC XY:

AN XY:

74354

show subpopulations

Gnomad4 AFR

AF:

0.0000724

Gnomad4 AMR

AF:

0.000523

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000221

Gnomad4 OTH

AF:

0.000955

Alfa

AF:

0.000303

Hom.:

Bravo

AF:

0.000283

TwinsUK

AF:

0.000539

AC:

ALSPAC

AF:

0.000519

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000349

AC:

ExAC

AF:

0.000264

AC:

EpiCase

AF:

0.000109

EpiControl

AF:

0.000474

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jan 18, 2022

The c.528G>T (p.E176D) alteration is located in exon 5 (coding exon 4) of the RBP4 gene. This alteration results from a G to T substitution at nucleotide position 528, causing the glutamic acid (E) at amino acid position 176 to be replaced by an aspartic acid (D). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Jan 15, 2024

This sequence change replaces glutamic acid, which is acidic and polar, with aspartic acid, which is acidic and polar, at codon 176 of the RBP4 protein (p.Glu176Asp). This variant is present in population databases (rs150540008, gnomAD 0.05%). This variant has not been reported in the literature in individuals affected with RBP4-related conditions. ClinVar contains an entry for this variant (Variation ID: 943659). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant¬†is likely to be tolerated. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.13

BayesDel_addAF

Benign

-0.32

BayesDel_noAF

Benign

-0.36

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.25

T;T;T;T

Eigen

Benign

-0.055

Eigen_PC

Benign

0.15

FATHMM_MKL

Uncertain

0.84

LIST_S2

Benign

0.83

.;T;T;.

M_CAP

Benign

0.0056

MetaRNN

Benign

0.11

T;T;T;T

MetaSVM

Benign

-0.32

MutationAssessor

Benign

0.79

N;N;.;.

MutationTaster

Benign

0.67

D;D;D

PrimateAI

Benign

0.37

PROVEAN

Benign

-1.3

N;N;.;N

REVEL

Uncertain

0.30

Sift

Benign

0.16

T;T;.;T

Sift4G

Benign

0.22

T;T;T;T

Polyphen

0.0080

B;B;.;.

Vest4

0.24

MutPred

0.46

Loss of disorder (P = 0.2157);Loss of disorder (P = 0.2157);.;.;

MVP

0.32

MPC

0.57

ClinPred

0.088

GERP RS

6.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.42

gMVP

0.33

Splicing

Name

Calibrated prediction

Score

Prediction

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

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