chr22-37772625-T-C

Position:

chr22-37772625-T-C

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_001039141.3(TRIOBP):c.6961T>C(p.Tyr2321His) variant causes a missense change. The variant allele was found at a frequency of 0.0000155 in 1,613,954 control chromosomes in the GnomAD database, including 1 homozygotes. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000085 ( 1 hom., cov: 32)

Exomes 𝑓: 0.0000082 ( 0 hom. )

Consequence

TRIOBP
NM_001039141.3 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: 5.95

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 Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
TRIOBP	NM_001039141.3 linkuse as main transcript	c.6961T>C	p.Tyr2321His	missense_variant	23/24	ENST00000644935.1	NP_001034230.1
TRIOBP	NM_007032.5 linkuse as main transcript	c.1822T>C	p.Tyr608His	missense_variant	13/14		NP_008963.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
TRIOBP	ENST00000644935.1 linkuse as main transcript	c.6961T>C	p.Tyr2321His	missense_variant	23/24		NM_001039141.3	ENSP00000496394	A2	Q9H2D6-1
TRIOBP	ENST00000403663.6 linkuse as main transcript	c.1822T>C	p.Tyr608His	missense_variant	13/14	1		ENSP00000386026	P2	Q9H2D6-7
TRIOBP	ENST00000344404.10 linkuse as main transcript	c.*6444T>C		3_prime_UTR_variant, NMD_transcript_variant	21/22	2		ENSP00000340312

Frequencies

GnomAD3 genomes

AF:

0.0000855

AC:

AN:

152116

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000786

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:

0.00

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.00000401

AC:

AN:

249444

Hom.:

AF XY:

0.00

AC XY:

AN XY:

135380

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000165

GnomAD4 exome

AF:

0.00000821

AC:

AN:

1461838

Hom.:

Cov.:

AF XY:

0.00000413

AC XY:

AN XY:

727216

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000134

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:

0.00

Gnomad4 OTH exome

AF:

0.0000993

GnomAD4 genome

AF:

0.0000855

AC:

AN:

152116

Hom.:

Cov.:

AF XY:

0.0000807

AC XY:

AN XY:

74306

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000786

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.000478

Bravo

AF:

0.000219

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

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

Nov 22, 2013

The Tyr2321His variant in TRIOBP has not been previously reported in individuals with hearing loss or in large population studies. Computational analyses (amino acid biochemical properties, conservation, AlignGVGD, PolyPhen2, SIFT) do not p rovide strong evidence for or against an impact to the protein. In summary, add itional data is needed to assess the clinical significance of this variant. -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Oct 13, 2023

This sequence change replaces tyrosine, which is neutral and polar, with histidine, which is basic and polar, at codon 2321 of the TRIOBP protein (p.Tyr2321His). This variant is present in population databases (rs727503530, gnomAD no frequency). This variant has not been reported in the literature in individuals affected with TRIOBP-related conditions. ClinVar contains an entry for this variant (Variation ID: 165616). 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 disruptive. 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

Pathogenic

0.89

BayesDel_addAF

Uncertain

0.085

BayesDel_noAF

Benign

-0.12

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.44

T;T;.

Eigen

Uncertain

0.54

Eigen_PC

Uncertain

0.49

FATHMM_MKL

Uncertain

0.94

LIST_S2

Uncertain

0.89

.;D;D

M_CAP

Benign

0.046

MetaRNN

Uncertain

0.53

D;D;D

MetaSVM

Benign

-0.83

MutationAssessor

Uncertain

2.0

M;M;.

MutationTaster

Benign

1.0

D;D

PrimateAI

Uncertain

0.77

PROVEAN

Uncertain

-3.4

D;.;D

REVEL

Uncertain

0.32

Sift

Uncertain

0.028

D;.;T

Sift4G

Pathogenic

0.0

D;.;D

Polyphen

1.0

D;D;.

Vest4

0.69

MutPred

0.42

Gain of disorder (P = 0.0221);Gain of disorder (P = 0.0221);.;

MVP

0.52

MPC

0.63

ClinPred

0.98

GERP RS

3.9

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.17

gMVP

0.44

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