Genetic Variant TFAP2A:p.Arg256Arg (chr6-10404510-C-T) – ACMG Classification: Benign (-7 pts)

Variant summary

Our verdict is Benign. The variant received -7 ACMG points: 0P and 7B. BP4BP6BP7BS2

The NM_001372066.1(TFAP2A):c.768G>A(p.Arg256Arg) variant causes a splice region, synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000689 in 1,597,378 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000069 ( 0 hom. )

Consequence

TFAP2A
NM_001372066.1 splice_region, synonymous

Scores

Splicing: ADA: 0.002131

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:1

Conservation

PhyloP100: 0.0410

Publications

0 publications found

Variant links:

Genes affected

TFAP2A (HGNC:11742): (transcription factor AP-2 alpha) The protein encoded by this gene is a transcription factor that binds the consensus sequence 5'-GCCNNNGGC-3'. The encoded protein functions as either a homodimer or as a heterodimer with similar family members. This protein activates the transcription of some genes while inhibiting the transcription of others. Defects in this gene are a cause of branchiooculofacial syndrome (BOFS). Three transcript variants encoding different isoforms have been found for this gene.[provided by RefSeq, Dec 2009]

TFAP2A links:

TFAP2A-AS2 (HGNC:52289): (TFAP2A antisense RNA 2) The product of this intronless gene is a capped lncRNA that is nuclear-enriched and associated with chromatin. The encoded transcript may be involved in the regulation of developmental gene expression in a context-dependent manner, functioning as a repressor in non-pluripotent cells and an activator in pluripotent cells. Transcription of this gene is activated in 8-cell human embryos during the major wave of zygotic genome activation, independently of and prior to the activation of TFAP2A, an overlapping gene found on the opposite strand. Expression of this gene is characterized by high cell-to-cell variability in the cells of totipotent human embryos and in stable cell lines. [provided by RefSeq, Mar 2017]

TFAP2A-AS2 links:

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ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -7 ACMG points.

BP4

Computational evidence support a benign effect (REVEL=0.205).

BP6

Variant 6-10404510-C-T is Benign according to our data. Variant chr6-10404510-C-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 2801415.

BP7

Synonymous conserved (PhyloP=0.041 with no splicing effect.

BS2

High AC in GnomAdExome4 at 10 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001372066.1. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
TFAP2A	NM_001372066.1	MANE Select	c.768G>A	p.Arg256Arg	splice_region synonymous	Exon 4 of 7	NP_001358995.1	A0A6E1XE14
TFAP2A	NM_001042425.3		c.750G>A	p.Arg250Arg	splice_region synonymous	Exon 4 of 7	NP_001035890.1	P05549-6
TFAP2A	NM_001032280.3		c.744G>A	p.Arg248Arg	splice_region synonymous	Exon 4 of 7	NP_001027451.1	P05549-5

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
TFAP2A	ENST00000379613.10	TSL:1 MANE Select	c.768G>A	p.Arg256Arg	splice_region synonymous	Exon 4 of 7	ENSP00000368933.5	A0A6E1XE14
TFAP2A	ENST00000379608.9	TSL:1	c.744G>A	p.Arg248Arg	splice_region synonymous	Exon 4 of 7	ENSP00000368928.3	P05549-5
TFAP2A	ENST00000466073.5	TSL:1	c.762G>A	p.Arg254Arg	splice_region synonymous	Exon 4 of 6	ENSP00000417495.1	C1K3N0

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152136

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.00000459

AC:

AN:

217936

AF XY:

0.00000837

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000612

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000692

AC:

AN:

1445242

Hom.:

Cov.:

AF XY:

0.00000975

AC XY:

AN XY:

717754

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33154

American (AMR)

AF:

0.00

AC:

AN:

42270

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25818

East Asian (EAS)

AF:

0.000129

AC:

AN:

38696

South Asian (SAS)

AF:

0.0000119

AC:

AN:

84322

European-Finnish (FIN)

AF:

0.0000197

AC:

AN:

50672

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5654

European-Non Finnish (NFE)

AF:

0.00000272

AC:

AN:

1104922

Other (OTH)

AF:

0.00

AC:

AN:

59734

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152136

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74318

show subpopulations

African (AFR)

AF:

0.0000241

AC:

AN:

41444

American (AMR)

AF:

0.00

AC:

AN:

15286

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5178

South Asian (SAS)

AF:

0.00

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10618

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

67990

Other (OTH)

AF:

0.00

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.625

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000378

ClinVar

ClinVar submissions

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (2)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.48

CADD

Benign

(source)

DANN

Benign

0.96

PhyloP100

0.041

PromoterAI

-0.042

Neutral

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.0021

dbscSNV1_RF

Benign

0.14

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over