8-119791397-C-A

Variant names:

• chr8-119791397-C-A
• rs9297605
• NM_003184.4:c.1340G>T

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_003184.4(TAF2):​c.1340G>T​(p.Ser447Ile) variant causes a missense change. The variant allele was found at a frequency of 0.00000658 in 151,912 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. S447T) has been classified as Benign.

• Frequency: Genomes: 𝑓 0.0000066 (0 hom., cov: 32)
• Consequence: TAF2 NM_003184.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 4.80
• Publications: 37 publications found

Genes affected

TAF2 (HGNC:11536): (TATA-box binding protein associated factor 2) Initiation of transcription by RNA polymerase II requires the activities of more than 70 polypeptides. The protein that coordinates these activities is transcription factor IID (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 one of the larger subunits of TFIID that is stably associated with the TFIID complex. It contributes to interactions at and downstream of the transcription initiation site, interactions that help determine transcription complex response to activators. [provided by RefSeq, Jul 2008]

TAF2 Gene-Disease associations (from GenCC):

• microcephaly-thin corpus callosum-intellectual disability syndrome

  Inheritance: AR Classification: STRONG, MODERATE, SUPPORTIVE, LIMITED Submitted by: G2P, Orphanet, Labcorp Genetics (formerly Invitae), Ambry Genetics

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.17447665).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_003184.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TAF2	NM_003184.4	MANE Select	c.1340G>T	p.Ser447Ile	missense	Exon 11 of 26	NP_003175.2
	TAF2	NM_001437338.1		c.1340G>T	p.Ser447Ile	missense	Exon 11 of 27	NP_001424267.1
	TAF2	NM_001438084.1		c.1340G>T	p.Ser447Ile	missense	Exon 11 of 26	NP_001425013.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TAF2	ENST00000378164.7	TSL:1 MANE Select	c.1340G>T	p.Ser447Ile	missense	Exon 11 of 26	ENSP00000367406.2
	TAF2	ENST00000686879.1		c.1340G>T	p.Ser447Ile	missense	Exon 11 of 27	ENSP00000509206.1
	TAF2	ENST00000685235.1		c.1340G>T	p.Ser447Ile	missense	Exon 11 of 26	ENSP00000510174.1

Frequencies

GnomAD3 genomes AF: 0.00000658 AC: 1 AN: 151912 Hom.: 0 Cov.: 32

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: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000147

Gnomad OTH AF: 0.00

GnomAD4 exome Cov.: 43

GnomAD4 genome AF: 0.00000658 AC: 1 AN: 151912 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 74146

African (AFR) AF: 0.00 AC: 0 AN: 41338

American (AMR) AF: 0.00 AC: 0 AN: 15264

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5178

South Asian (SAS) AF: 0.00 AC: 0 AN: 4826

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10528

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000147 AC: 1 AN: 67988

Other (OTH) AF: 0.00 AC: 0 AN: 2092

Alfa AF: 0.00 Hom.: 25511

TwinsUK AF: 0.00 AC: 0

ALSPAC AF: 0.000259 AC: 1

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.12
BayesDel_addAF	Benign	-0.19	T
BayesDel_noAF	Benign	-0.52
CADD	Uncertain	24
DANN	Benign	0.97
DEOGEN2	Benign	0.043	T
Eigen	Benign	-0.20
Eigen_PC	Benign	-0.13
FATHMM_MKL	Uncertain	0.85	D
LIST_S2	Benign	0.74	T
M_CAP	Benign	0.011	T
MetaRNN	Benign	0.17	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.81	L
PhyloP100		4.8
PrimateAI	Uncertain	0.73	T
PROVEAN	Uncertain	-2.6	D
REVEL	Benign	0.10
Sift	Benign	0.042	D
Sift4G	Uncertain	0.031	D
Polyphen		0.0020	B
Vest4		0.25
MutPred		0.72		Loss of catalytic residue at S447 (P = 0.0946)
MVP		0.13
MPC		0.49
ClinPred		0.94	D
GERP RS		3.0
Varity_R		0.20
gMVP		0.65
Mutation Taster		=88/12	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.080		Details are displayed if max score is > 0.2

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

Other links and lift over

dbSNP: rs9297605; hg19: chr8-120803637;