6-24848117-C-T

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BP4_Strong

The NM_001286445.3(RIPOR2):c.1072G>A(p.Ala358Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000039 in 1,613,766 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 Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A358S) has been classified as Benign.

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000040 ( 0 hom. )

Consequence

RIPOR2
NM_001286445.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.994

Publications

2 publications found

Variant links:

Genes affected

RIPOR2 (HGNC:13872): (RHO family interacting cell polarization regulator 2) This gene encodes an atypical inhibitor of the small G protein RhoA. Inhibition of RhoA activity by the encoded protein mediates myoblast fusion and polarization of T cells and neutrophils. The encoded protein is a component of hair cell stereocilia that is essential for hearing. A splice site mutation in this gene results in hearing loss in human patients. [provided by RefSeq, Sep 2016]

RIPOR2 Gene-Disease associations (from GenCC):

autosomal recessive nonsyndromic hearing loss 104
Inheritance: AR Classification: MODERATE, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, PanelApp Australia
nonsyndromic genetic hearing loss
Inheritance: AR Classification: MODERATE Submitted by: ClinGen
hearing loss, autosomal recessive
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
autosomal dominant nonsyndromic hearing loss 21
Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics

RIPOR2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -4 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.017320186).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RIPOR2	NM_001286445.3 link	c.1072G>A	p.Ala358Thr	missense_variant	Exon 12 of 22	ENST00000643898.2	NP_001273374.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RIPOR2	ENST00000643898.2 link	c.1072G>A	p.Ala358Thr	missense_variant	Exon 12 of 22		NM_001286445.3	ENSP00000494268.2

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

152180

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000563

AC:

AN:

248672

AF XY:

0.0000667

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.000199

Gnomad EAS exome

AF:

0.000112

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000887

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000404

AC:

AN:

1461468

Hom.:

Cov.:

AF XY:

0.0000509

AC XY:

AN XY:

726992

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33476

American (AMR)

AF:

0.00

AC:

AN:

44704

Ashkenazi Jewish (ASJ)

AF:

0.000115

AC:

AN:

26126

East Asian (EAS)

AF:

0.0000504

AC:

AN:

39662

South Asian (SAS)

AF:

0.00

AC:

AN:

86200

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53392

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

0.0000459

AC:

AN:

1111778

Other (OTH)

AF:

0.0000497

AC:

AN:

60364

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.479

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.0000263

AC:

AN:

152298

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74482

show subpopulations

African (AFR)

AF:

0.0000241

AC:

AN:

41554

American (AMR)

AF:

0.00

AC:

AN:

15298

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5184

South Asian (SAS)

AF:

0.00

AC:

AN:

4824

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10616

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000441

AC:

AN:

68036

Other (OTH)

AF:

0.00

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.463

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00000310

Hom.:

Bravo

AF:

0.00000378

ExAC

AF:

0.0000744

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.000297

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Oct 19, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Tolerated"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0". The threonine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. This sequence change replaces alanine, which is neutral and non-polar, with threonine, which is neutral and polar, at codon 329 of the FAM65B protein (p.Ala329Thr). This variant is present in population databases (rs35254980, gnomAD 0.01%). This variant has not been reported in the literature in individuals affected with FAM65B-related conditions. 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

0.059

BayesDel_addAF

Benign

-0.54

BayesDel_noAF

Benign

-0.78

CADD

Benign

(source)

DANN

Benign

0.50

DEOGEN2

Benign

0.0010

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

Eigen

Benign

-1.2

Eigen_PC

Benign

-1.1

FATHMM_MKL

Benign

0.11

LIST_S2

Uncertain

0.86

.;D;.;D;D;.;D;D;.;D;D;.;D

M_CAP

Benign

0.0042

MetaRNN

Benign

0.017

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

MetaSVM

Benign

-1.0

PhyloP100

0.99

PrimateAI

Benign

0.26

PROVEAN

Benign

2.4

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

REVEL

Benign

0.068

Sift

Benign

1.0

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

Sift4G

Benign

1.0

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

Polyphen

0.0050

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

Vest4

0.080, 0.081, 0.13, 0.10, 0.13

MutPred

0.11

Gain of phosphorylation at A329 (P = 0.036);Gain of phosphorylation at A329 (P = 0.036);Gain of phosphorylation at A329 (P = 0.036);Gain of phosphorylation at A329 (P = 0.036);.;Gain of phosphorylation at A329 (P = 0.036);.;Gain of phosphorylation at A329 (P = 0.036);Gain of phosphorylation at A329 (P = 0.036);Gain of phosphorylation at A329 (P = 0.036);.;Gain of phosphorylation at A329 (P = 0.036);Gain of phosphorylation at A329 (P = 0.036);

MVP

0.082

MPC

0.29

ClinPred

0.037

GERP RS

-3.5

Varity_R

0.014

gMVP

0.30

Mutation Taster

=97/3

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over