22-37734435-C-T

Variant names:

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_001039141.3(TRIOBP):c.4099C>T(p.Arg1367Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000332 in 1,613,240 control chromosomes in the GnomAD database, including 4 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 Likely benign (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R1367Q) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0011 ( 1 hom., cov: 32)

Exomes 𝑓: 0.00026 ( 3 hom. )

Consequence

TRIOBP
NM_001039141.3 missense

Scores

Clinical Significance

Likely benign criteria provided, multiple submitters, no conflicts B:6

Conservation

PhyloP100: -2.49

Publications

3 publications found

Variant links:

Genes affected

TRIOBP (HGNC:17009): (TRIO and F-actin binding protein) This gene encodes a protein with an N-terminal pleckstrin homology domain and a C-terminal coiled-coil region. The protein interacts with trio, which is involved with neural tissue development and controlling actin cytoskeleton organization, cell motility and cell growth. The protein also associates with F-actin and stabilizes F-actin structures. Mutations in this gene have been associated with a form of autosomal recessive nonsyndromic deafness. Multiple alternatively spliced transcript variants that would encode different isoforms have been found for this gene, however some transcripts may be subject to nonsense-mediated decay (NMD). [provided by RefSeq, Nov 2008]

TRIOBP Gene-Disease associations (from GenCC):

autosomal recessive nonsyndromic hearing loss 28
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Laboratory for Molecular Medicine, Labcorp Genetics (formerly Invitae), PanelApp Australia
hearing loss, autosomal recessive
Inheritance: AR Classification: DEFINITIVE, SUPPORTIVE Submitted by: ClinGen, Orphanet

TRIOBP links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.004133284).

BP6

Variant 22-37734435-C-T is Benign according to our data. Variant chr22-37734435-C-T is described in ClinVar as Likely_benign. ClinVar VariationId is 43853.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population sas. GnomAd4 allele frequency = 0.00106 (161/152288) while in subpopulation SAS AF = 0.00414 (20/4826). AF 95% confidence interval is 0.00275. There are 1 homozygotes in GnomAd4. There are 86 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAdExome4 at 3 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TRIOBP	NM_001039141.3 link	c.4099C>T	p.Arg1367Trp	missense_variant	Exon 9 of 24	ENST00000644935.1	NP_001034230.1	Q9H2D6-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
TRIOBP	ENST00000644935.1 link	c.4099C>T	p.Arg1367Trp	missense_variant	Exon 9 of 24		NM_001039141.3	ENSP00000496394.1	Q9H2D6-1
TRIOBP	ENST00000344404.10 link	n.*3582C>T		non_coding_transcript_exon_variant	Exon 7 of 22	2		ENSP00000340312.6	H7BXW4
TRIOBP	ENST00000344404.10 link	n.*3582C>T		3_prime_UTR_variant	Exon 7 of 22	2		ENSP00000340312.6	H7BXW4

Frequencies

GnomAD3 genomes

AF:

0.00106

AC:

161

AN:

152170

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00304

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000327

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00414

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000118

Gnomad OTH

AF:

0.000959

GnomAD2 exomes

AF:

0.000554

AC:

137

AN:

247144

AF XY:

0.000631

show subpopulations

Gnomad AFR exome

AF:

0.00280

Gnomad AMR exome

AF:

0.000145

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000111

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000360

Gnomad OTH exome

AF:

0.000827

GnomAD4 exome

AF:

0.000256

AC:

374

AN:

1460952

Hom.:

Cov.:

AF XY:

0.000305

AC XY:

222

AN XY:

726758

show subpopulations

African (AFR)

AF:

0.00287

AC:

AN:

33480

American (AMR)

AF:

0.000179

AC:

AN:

44702

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26128

East Asian (EAS)

AF:

0.0000756

AC:

AN:

39692

South Asian (SAS)

AF:

0.00250

AC:

216

AN:

86228

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52652

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000153

AC:

AN:

1111924

Other (OTH)

AF:

0.000563

AC:

AN:

60378

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.460

Heterozygous variant carriers

108

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

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:

0.00106

AC:

161

AN:

152288

Hom.:

Cov.:

AF XY:

0.00115

AC XY:

AN XY:

74462

show subpopulations

African (AFR)

AF:

0.00303

AC:

126

AN:

41560

American (AMR)

AF:

0.000327

AC:

AN:

15298

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5174

South Asian (SAS)

AF:

0.00414

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10622

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000118

AC:

AN:

68024

Other (OTH)

AF:

0.000949

AC:

AN:

2108

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.514

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:

0.000275

Hom.:

Bravo

AF:

0.00103

ESP6500AA

AF:

0.00332

AC:

ESP6500EA

AF:

0.000121

AC:

ExAC

AF:

0.000753

AC:

Asia WGS

AF:

0.000577

AC:

AN:

3478

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

Significance: Likely benign

Submissions summary: Benign:6

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:3

Nov 04, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Feb 01, 2025

CeGaT Center for Human Genetics Tuebingen

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

TRIOBP: BP4 -

Jan 09, 2021

GeneDx

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not specified

Benign:2

Jun 21, 2016

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

p.Arg1367Trp in exon 09 of TRIOBP: This variant is not expected to have clinical significance because it has been identified in 0.4% (33/9248) of African chromo somes and in 0.3% (53/16284) of South Asian chromosomes by the Exome Aggregation Consortium (ExAC, http://exac.broadinstitute.org; dbSNP rs191589773). -

Mar 16, 2016

Eurofins Ntd Llc (ga)

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

TRIOBP-related disorder

Benign:1

Jul 12, 2023

PreventionGenetics, part of Exact Sciences

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.077

BayesDel_addAF

Benign

-0.65

BayesDel_noAF

Benign

-0.72

CADD

Benign

0.71

(source)

DANN

Benign

0.83

DEOGEN2

Benign

0.11

T;T

Eigen

Benign

-1.8

Eigen_PC

Benign

-1.8

FATHMM_MKL

Benign

0.024

LIST_S2

Benign

0.48

.;T

M_CAP

Benign

0.0052

MetaRNN

Benign

0.0041

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.0

L;L

PhyloP100

-2.5

PrimateAI

Benign

0.27

PROVEAN

Uncertain

-2.4

N;.

REVEL

Benign

0.010

Sift

Benign

0.054

T;.

Sift4G

Uncertain

0.016

D;.

Polyphen

0.0040

B;B

Vest4

0.11

MVP

0.12

MPC

0.12

ClinPred

0.0054

GERP RS

-5.3

Varity_R

0.033

gMVP

0.12

Mutation Taster

=98/2

polymorphism

(source)

Splicing

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