dbSNP rs986737217: TAF4B:p.Pro107Ala (chr18-26227252-C-G) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_005640.3(TAF4B):c.319C>G(p.Pro107Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000685 in 1,460,892 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

TAF4B
NM_005640.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.27

Variant links:

Genes affected

TAF4B (HGNC:11538): (TATA-box binding protein associated factor 4b) TATA binding protein (TBP) and TBP-associated factors (TAFs) participate in the formation of the TFIID protein complex, which is involved in initiation of transcription of genes by RNA polymerase II. This gene encodes a cell type-specific TAF that may be responsible for mediating transcription by a subset of activators in B cells. Three transcript variants encoding two different isoforms have been found for this gene. [provided by RefSeq, Jun 2014]

TAF4B links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.21206409).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TAF4B	NM_005640.3 link	c.319C>G	p.Pro107Ala	missense_variant	Exon 1 of 15	ENST00000269142.10	NP_005631.1	Q92750-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
TAF4B	ENST00000269142.10 link	c.319C>G	p.Pro107Ala	missense_variant	Exon 1 of 15	1	NM_005640.3	ENSP00000269142.6	Q92750-1
TAF4B	ENST00000578121.5 link	c.319C>G	p.Pro107Ala	missense_variant	Exon 1 of 15	2		ENSP00000462980.1	J3KTH2
TAF4B	ENST00000418698.3 link	n.319C>G		non_coding_transcript_exon_variant	Exon 1 of 16	5		ENSP00000389365.3	Q92750-2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.85e-7

AC:

AN:

1460892

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726750

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:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

Cov.:

Bravo

AF:

0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Mar 06, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.319C>G (p.P107A) alteration is located in exon 1 (coding exon 1) of the TAF4B gene. This alteration results from a C to G substitution at nucleotide position 319, causing the proline (P) at amino acid position 107 to be replaced by an alanine (A). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.15

BayesDel_addAF

Benign

-0.052

BayesDel_noAF

Benign

-0.31

CADD

Uncertain

DANN

Benign

0.89

DEOGEN2

Benign

0.23

T;T

Eigen

Uncertain

0.20

Eigen_PC

Uncertain

0.22

FATHMM_MKL

Benign

0.72

LIST_S2

Benign

0.81

T;T

M_CAP

Benign

0.018

MetaRNN

Benign

0.21

T;T

MetaSVM

Benign

-0.81

MutationAssessor

Uncertain

2.1

M;.

PrimateAI

Uncertain

0.62

PROVEAN

Uncertain

-2.8

D;.

REVEL

Benign

0.11

Sift

Pathogenic

0.0

D;.

Sift4G

Pathogenic

0.0

D;D

Polyphen

0.20

B;.

Vest4

0.27

MutPred

0.34

Loss of loop (P = 0.0203);Loss of loop (P = 0.0203);

MVP

0.17

MPC

1.8

ClinPred

0.96

GERP RS

4.7

Varity_R

0.39

gMVP

0.32

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