Genetic Variant TGIF1:c.-357A>G (chr18-3449879-A-G) – ACMG Classification: Benign (-10 pts)

Variant summary

Our verdict is Benign. Variant got -10 ACMG points: 0P and 10B. BP4_StrongBP6_ModerateBS2

The NM_173208.3(TGIF1):c.-360A>G variant causes a 5 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000945 in 985,530 control chromosomes in the GnomAD database, including 7 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: 𝑓 0.0044 ( 5 hom., cov: 32)

Exomes 𝑓: 0.00032 ( 2 hom. )

Consequence

TGIF1
NM_173208.3 5_prime_UTR

Scores

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: 1.48

Variant links:

Genes affected

TGIF1 (HGNC:11776): (TGFB induced factor homeobox 1) The protein encoded by this gene is a member of the three-amino acid loop extension (TALE) superclass of atypical homeodomains. TALE homeobox proteins are highly conserved transcription regulators. This particular homeodomain binds to a previously characterized retinoid X receptor responsive element from the cellular retinol-binding protein II promoter. In addition to its role in inhibiting 9-cis-retinoic acid-dependent RXR alpha transcription activation of the retinoic acid responsive element, the protein is an active transcriptional co-repressor of SMAD2 and may participate in the transmission of nuclear signals during development and in the adult. Mutations in this gene are associated with holoprosencephaly type 4, which is a structural anomaly of the brain. Alternative splicing has been observed at this locus and multiple splice variants encoding distinct isoforms are described. [provided by RefSeq, Jul 2013]

TGIF1 links:

LOC124904237 (HGNC:):

LOC124904237 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -10 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.75).

BP6

Variant 18-3449879-A-G is Benign according to our data. Variant chr18-3449879-A-G is described in ClinVar as [Likely_benign]. Clinvar id is 1196618.Status of the report is criteria_provided_single_submitter, 1 stars.

BS2

High AC in GnomAd4 at 667 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	Effect	Exon rank	Protein	UniProt
TGIF1	NM_001278684.2 link	c.-357A>G	5_prime_UTR_variant	Exon 1 of 4	NP_001265613.1	Q15583-2
TGIF1	NM_173208.3 link	c.-360A>G	5_prime_UTR_variant	Exon 1 of 4	NP_775300.1	Q15583-2
TGIF1	NM_173209.3 link	c.-236A>G	5_prime_UTR_variant	Exon 1 of 3	NP_775301.1	Q15583-4

Ensembl

Gene	Transcript	HGVSc	Effect	Exon rank	TSL	Protein	UniProt
TGIF1	ENST00000405385 link	c.-236A>G	5_prime_UTR_variant	Exon 1 of 3	2	ENSP00000384970.2	Q15583-4
TGIF1	ENST00000618001.4 link	c.58+2082A>G	intron_variant	Intron 1 of 2	2	ENSP00000483499.1	Q15583-3
TGIF1	ENST00000401449.5 link	c.-44-6475A>G	intron_variant	Intron 2 of 3	2	ENSP00000385206.1	Q15583-4

Frequencies

GnomAD3 genomes

AF:

0.00440

AC:

670

AN:

152172

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0153

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00164

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000414

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00633

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00287

GnomAD4 exome

AF:

0.000317

AC:

264

AN:

833240

Hom.:

Cov.:

AF XY:

0.000314

AC XY:

121

AN XY:

384792

show subpopulations

Gnomad4 AFR exome

AF:

0.0148

Gnomad4 AMR exome

AF:

0.00101

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:

0.00000131

Gnomad4 OTH exome

AF:

0.000952

GnomAD4 genome

AF:

0.00438

AC:

667

AN:

152290

Hom.:

Cov.:

AF XY:

0.00406

AC XY:

302

AN XY:

74462

show subpopulations

Gnomad4 AFR

AF:

0.0152

Gnomad4 AMR

AF:

0.00163

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00284

Alfa

AF:

0.00229

Hom.:

Bravo

AF:

0.00526

Asia WGS

AF:

0.000578

AC:

AN:

3476

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Benign:1

Jun 26, 2018

GeneDx

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.75

CADD

Benign

DANN

Benign

0.59

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