Genetic Variant TGIF1:c.-14_-10dupGCGCC (chr18-3449607-T-TGCGCC) – ACMG Classification: Likely_benign (-5 pts)

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 0P and 5B. BP6BS2

The NM_001278682.2(TGIF1):c.-14_-10dupGCGCC variant causes a 5 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000243 in 945,834 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Likely benign (no stars).

Frequency

Genomes: 𝑓 0.000035 ( 0 hom., cov: 31)

Exomes 𝑓: 0.000023 ( 0 hom. )

Consequence

TGIF1
NM_001278682.2 5_prime_UTR

Scores

Not classified

Clinical Significance

Likely benign no assertion criteria provided B:1

Conservation

PhyloP100: 2.56

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:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -5 ACMG points.

BP6

Variant 18-3449607-T-TGCGCC is Benign according to our data. Variant chr18-3449607-T-TGCGCC is described in ClinVar as [Likely_benign]. Clinvar id is 3032359.Status of the report is no_assertion_criteria_provided, 0 stars.

BS2

High AC in GnomAdExome4 at 19 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	Effect	Exon rank	Protein	UniProt
TGIF1	NM_001278682.2 link	c.-14_-10dupGCGCC	5_prime_UTR_variant	Exon 1 of 3	NP_001265611.1	Q15583
TGIF1	NM_173207.4 link	c.58+1821_58+1825dupGCGCC	intron_variant	Intron 1 of 2	NP_775299.1	Q15583-3
TGIF1	NM_001278686.3 link	c.-44-6736_-44-6732dupGCGCC	intron_variant	Intron 2 of 3	NP_001265615.1	Q15583-4

Ensembl

Gene	Transcript	HGVSc	Effect	Exon rank	TSL	Protein	UniProt
TGIF1	ENST00000549253.5 link	c.-83_-79dupGCGCC	5_prime_UTR_variant	Exon 1 of 3	3	ENSP00000449973.1	F8VXG3
TGIF1	ENST00000618001.4 link	c.58+1821_58+1825dupGCGCC	intron_variant	Intron 1 of 2	2	ENSP00000483499.1	Q15583-3
TGIF1	ENST00000401449.5 link	c.-44-6736_-44-6732dupGCGCC	intron_variant	Intron 2 of 3	2	ENSP00000385206.1	Q15583-4

Frequencies

GnomAD3 genomes

AF:

0.0000355

AC:

AN:

112686

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:

0.000313

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000497

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.0000228

AC:

AN:

833148

Hom.:

Cov.:

AF XY:

0.0000234

AC XY:

AN XY:

384746

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:

0.0000607

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000223

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000355

AC:

AN:

112686

Hom.:

Cov.:

AF XY:

0.0000586

AC XY:

AN XY:

51234

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:

0.000313

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000497

Gnomad4 OTH

AF:

0.00

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: no assertion criteria provided

LINK: link

Submissions by phenotype

TGIF1-related disorder

Benign:1

Oct 15, 2020

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

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