X-71516236-CTTT-CTT

Position:

• chrX-71516236-CTTT-CTT

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 0P and 8B. BS1 BS2

The NR_104387.2(TAF1):​n.5520-12290del variant causes a intron, non coding transcript change involving the alteration of a non-conserved nucleotide. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.0025 (1 hom., 24 hem., cov: 19)
• Consequence: TAF1 NR_104387.2 intron, non_coding_transcript
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.106

Genes affected

TAF1 (HGNC:11535): (TATA-box binding protein associated factor 1) Initiation of transcription by RNA polymerase II requires the activities of more than 70 polypeptides. The protein that coordinates these activities is the basal transcription factor TFIID, which binds to the core promoter to position the polymerase properly, serves as the scaffold for assembly of the remainder of the transcription complex, and acts as a channel for regulatory signals. TFIID is composed of the TATA-binding protein (TBP) and a group of evolutionarily conserved proteins known as TBP-associated factors or TAFs. TAFs may participate in basal transcription, serve as coactivators, function in promoter recognition or modify general transcription factors (GTFs) to facilitate complex assembly and transcription initiation. This gene encodes the largest subunit of TFIID. This subunit binds to core promoter sequences encompassing the transcription start site. It also binds to activators and other transcriptional regulators, and these interactions affect the rate of transcription initiation. This subunit contains two independent protein kinase domains at the N- and C-terminals, but also possesses acetyltransferase activity and can act as a ubiquitin-activating/conjugating enzyme. Mutations in this gene result in Dystonia 3, torsion, X-linked, a dystonia-parkinsonism disorder. Alternative splicing of this gene results in multiple transcript variants. This gene is part of a complex transcription unit (TAF1/DYT3), wherein some transcript variants share exons with TAF1 as well as additional downstream DYT3 exons. [provided by RefSeq, Oct 2013]

ACMG classification

Verdict is Benign. Variant got -8 ACMG points.

• BS1: Variant frequency is greater than expected in population eas. gnomad4 allele frequency = 0.00251 (224/89315) while in subpopulation EAS AF= 0.0297 (87/2933). AF 95% confidence interval is 0.0246. There are 1 homozygotes in gnomad4. There are 24 alleles in male gnomad4 subpopulation. Median coverage is 19. This position pass quality control queck.
• BS2: High Hemizygotes in GnomAd4 at 24 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
TAF1	NR_104387.2	n.5520-12290del		intron_variant, non_coding_transcript_variant
TAF1	NR_104388.2	n.5511-12290del		intron_variant, non_coding_transcript_variant
TAF1	NR_104389.2	n.5418-12290del		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
TAF1	ENST00000437147.8	c.1361-12290del		intron_variant, NMD_transcript_variant		1		ENSP00000406517
TAF1	ENST00000462588.5	c.1000-12290del		intron_variant, NMD_transcript_variant		1		ENSP00000508350
TAF1	ENST00000467309.5	c.*107-12290del		intron_variant, NMD_transcript_variant		1		ENSP00000507353

Frequencies

GnomAD3 genomes AF: 0.00250 AC: 223 AN: 89324 Hom.: 1 Cov.: 19 AF XY: 0.00111 AC XY: 24 AN XY: 21696

Gnomad AFR AF: 0.00237

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00215

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.0295

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00311

Gnomad MID AF: 0.0100

Gnomad NFE AF: 0.00105

Gnomad OTH AF: 0.00177

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.00251 AC: 224 AN: 89315 Hom.: 1 Cov.: 19 AF XY: 0.00111 AC XY: 24 AN XY: 21709

Gnomad4 AFR AF: 0.00241

Gnomad4 AMR AF: 0.00215

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.0297

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00311

Gnomad4 NFE AF: 0.00105

Gnomad4 OTH AF: 0.00175

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs41469947; hg19: chrX-70736086;