NM_012454.4:c.5095G>A

Variant names:

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_012454.4(TIAM2):c.5095G>A(p.Gly1699Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000155 in 1,610,266 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 31)

Exomes 𝑓: 0.000014 ( 0 hom. )

Consequence

TIAM2
NM_012454.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.96

Variant links:

Genes affected

TIAM2 (HGNC:11806): (TIAM Rac1 associated GEF 2) This gene encodes a guanine nucleotide exchange factor. A highly similar mouse protein specifically activates ras-related C3 botulinum substrate 1, converting this Rho-like guanosine triphosphatase (GTPase) from a guanosine diphosphate-bound inactive state to a guanosine triphosphate-bound active state. The encoded protein may play a role in neural cell development. Alternatively spliced transcript variants encoding different isoforms have been described. [provided by RefSeq, Jul 2008]

TIAM2 links:

TFB1M (HGNC:17037): (transcription factor B1, mitochondrial) The protein encoded by this gene is a dimethyltransferase that methylates the conserved stem loop of mitochondrial 12S rRNA. The encoded protein also is part of the basal mitochondrial transcription complex and is necessary for mitochondrial gene expression. The methylation and transcriptional activities of this protein are independent of one another. Variations in this gene may influence the severity of aminoglycoside-induced deafness (AID).[provided by RefSeq, Aug 2010]

TFB1M links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.06128466).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TIAM2	NM_012454.4 link	c.5095G>A	p.Gly1699Arg	missense_variant	Exon 27 of 27	ENST00000682666.1	NP_036586.3	Q8IVF5-1B3KW11
TFB1M	NM_016020.4 link	c.*726C>T		3_prime_UTR_variant	Exon 7 of 7	ENST00000367166.5	NP_057104.2	Q8WVM0E5KTM5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TIAM2	ENST00000682666.1 link	c.5095G>A	p.Gly1699Arg	missense_variant	Exon 27 of 27		NM_012454.4	ENSP00000507157.1		Q8IVF5-1
TFB1M	ENST00000367166 link	c.*726C>T		3_prime_UTR_variant	Exon 7 of 7	1	NM_016020.4	ENSP00000356134.4		Q8WVM0

Frequencies

GnomAD3 genomes

AF:

0.0000333

AC:

AN:

150276

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000246

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000663

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000589

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000398

AC:

AN:

251224

Hom.:

AF XY:

0.0000442

AC XY:

AN XY:

135866

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000578

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000381

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000880

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000137

AC:

AN:

1459876

Hom.:

Cov.:

AF XY:

0.0000138

AC XY:

AN XY:

726274

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000671

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000202

Gnomad4 SAS exome

AF:

0.0000232

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000630

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000332

AC:

AN:

150390

Hom.:

Cov.:

AF XY:

0.0000546

AC XY:

AN XY:

73316

show subpopulations

Gnomad4 AFR

AF:

0.0000245

Gnomad4 AMR

AF:

0.0000662

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000591

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

ExAC

AF:

0.0000330

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jan 08, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.5095G>A (p.G1699R) alteration is located in exon 26 (coding exon 24) of the TIAM2 gene. This alteration results from a G to A substitution at nucleotide position 5095, causing the glycine (G) at amino acid position 1699 to be replaced by an arginine (R). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.17

BayesDel_addAF

Benign

-0.23

BayesDel_noAF

Benign

-0.25

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.027

T;.;.;.;T;.

Eigen

Uncertain

0.26

Eigen_PC

Benign

0.21

FATHMM_MKL

Benign

0.71

LIST_S2

Benign

0.84

T;T;T;T;T;T

M_CAP

Benign

0.0064

MetaRNN

Benign

0.061

T;T;T;T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Uncertain

2.3

M;.;.;.;.;.

PrimateAI

Uncertain

0.51

PROVEAN

Benign

-2.0

N;N;N;N;N;N

REVEL

Benign

0.13

Sift

Uncertain

0.0010

D;D;D;D;D;D

Sift4G

Uncertain

0.023

D;D;D;D;D;D

Polyphen

1.0

D;D;D;.;D;.

Vest4

0.34

MutPred

0.19

Gain of methylation at K1700 (P = 0.0679);.;.;.;.;.;

MVP

0.34

MPC

0.29

ClinPred

0.22

GERP RS

4.1

Varity_R

0.12

gMVP

0.053

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