rs569914227

Positions:

chr22-37735039-C-G

Variant summary

Our verdict is Benign. Variant got -9 ACMG points: 0P and 9B. BP4_StrongBP6BS2

The NM_001039141.3(TRIOBP):c.4703C>G(p.Ala1568Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000108 in 1,608,426 control chromosomes in the GnomAD database, including 3 homozygotes. In-silico tool predicts a benign outcome for this variant. 14/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00012 ( 3 hom. )

Consequence

TRIOBP
NM_001039141.3 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:1

Conservation

PhyloP100: -1.05

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 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -9 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.010054499).

BP6

Variant 22-37735039-C-G is Benign according to our data. Variant chr22-37735039-C-G is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 229356.We mark this variant Likely_benign, oryginal submissions are: {Uncertain_significance=1, Benign=1}.

BS2

High Homozygotes in GnomAdExome4 at 3 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
TRIOBP	NM_001039141.3 linkuse as main transcript	c.4703C>G	p.Ala1568Gly	missense_variant	9/24	ENST00000644935.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TRIOBP	ENST00000644935.1 linkuse as main transcript	c.4703C>G	p.Ala1568Gly	missense_variant	9/24		NM_001039141.3	A2	Q9H2D6-1
TRIOBP	ENST00000344404.10 linkuse as main transcript	c.*4186C>G		3_prime_UTR_variant, NMD_transcript_variant	7/22	2

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

152090

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000830

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000235

AC:

AN:

246980

Hom.:

AF XY:

0.000268

AC XY:

AN XY:

134468

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000558

Gnomad SAS exome

AF:

0.00180

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000896

Gnomad OTH exome

AF:

0.000167

GnomAD4 exome

AF:

0.000117

AC:

170

AN:

1456218

Hom.:

Cov.:

AF XY:

0.000153

AC XY:

111

AN XY:

723356

show subpopulations

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:

0.00183

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

9.02e-7

Gnomad4 OTH exome

AF:

0.000133

GnomAD4 genome

AF:

0.0000263

AC:

AN:

152208

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74432

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000831

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000936

Hom.:

Bravo

AF:

0.0000113

ExAC

AF:

0.000273

AC:

Asia WGS

AF:

0.00115

AC:

AN:

3478

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

May 28, 2015

Variant classified as Uncertain Significance - Favor Benign. The p.Ala1568Gly va riant in TRIOBP has not been previously reported in individuals with hearing los s, but has been identified in 0.2% (32/16342) of South Asian chromosomes by the Exome Aggregation Consortium (ExAC, http://exac.broadinstitute.org; dbSNP rs5699 14227). Alanine (Ala) at position 1568 is not conserved in mammals or evolutiona rily distant species and at least 1 mammal (elephant) carries a glycine (Gly), s upporting that this change may be tolerated. Additional computational prediction tools do not provide strong support for or against an impact to the protein. In summary, while the clinical significance of the p.Ala1568Gly variant is uncerta in, its frequency in the general population and lack of conservation suggest tha t it is more likely to be benign. -

not provided

Benign:1

Benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Oct 22, 2023

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

-0.65

BayesDel_noAF

Benign

-0.71

CADD

Benign

1.1

DANN

Benign

0.90

DEOGEN2

Benign

0.042

T;T

Eigen

Benign

-1.2

Eigen_PC

Benign

-1.3

FATHMM_MKL

Benign

0.033

LIST_S2

Benign

0.45

.;T

M_CAP

Benign

0.0078

MetaRNN

Benign

0.010

T;T

MetaSVM

Benign

-0.97

MutationAssessor

Benign

1.8

L;L

MutationTaster

Benign

1.0

PrimateAI

Benign

0.41

PROVEAN

Benign

-1.7

N;.

REVEL

Benign

0.0070

Sift

Uncertain

0.0050

D;.

Sift4G

Benign

0.21

T;.

Polyphen

0.0030

B;B

Vest4

0.097

MutPred

0.27

Gain of catalytic residue at A1568 (P = 0.0093);Gain of catalytic residue at A1568 (P = 0.0093);

MVP

0.14

MPC

0.31

ClinPred

0.037

GERP RS

-7.1

Varity_R

0.066

gMVP

0.030

Splicing

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