chr6-166160974-G-C

Variant names:

• chr6-166160974-G-C
• NM_001366285.2:c.908-8C>G

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_001366285.2(TBXT):​c.908-8C>G variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 33)
• Consequence: TBXT NM_001366285.2 splice_region, intron
• Scores: Splicing: ADA: 0.0002460
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.409

Genes affected

TBXT (HGNC:11515): (T-box transcription factor T) The protein encoded by this gene is an embryonic nuclear transcription factor that binds to a specific DNA element, the palindromic T-site. It binds through a region in its N-terminus, called the T-box, and effects transcription of genes required for mesoderm formation and differentiation. The protein is localized to notochord-derived cells. Variation in this gene was associated with susceptibility to neural tube defects and chordoma. A mutation in this gene was found in a family with sacral agenesis with vertebral anomalies. [provided by RefSeq, Sep 2018]

ACMG classification

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 (BayesDel_noAF=-0.92).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TBXT	NM_001366285.2	c.908-8C>G		splice_region_variant, intron_variant	Intron 6 of 7	ENST00000366876.7	NP_001353214.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TBXT	ENST00000366876.7	c.908-8C>G		splice_region_variant, intron_variant	Intron 6 of 7	1	NM_001366285.2	ENSP00000355841.3
TBXT	ENST00000366871.7	c.731-8C>G		splice_region_variant, intron_variant	Intron 6 of 7	1		ENSP00000355836.3
TBXT	ENST00000296946.6	c.905-8C>G		splice_region_variant, intron_variant	Intron 7 of 8	5		ENSP00000296946.2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.92
CADD	Benign	0.30
DANN	Benign	0.24

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.00025
dbscSNV1_RF	Benign	0.056
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

No publications associated with this variant yet.

Other links and lift over

hg19: chr6-166574462;