chr6-50835337-A-G

Variant names:

• chr6-50835337-A-G
• rs987237
• NM_003221.4:c.602-724A>G

Variant summary

Our verdict is Benign. The variant received -10 ACMG points: 0P and 10B. BP4_Moderate BA1

The NM_003221.4(TFAP2B):​c.602-724A>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.172 in 152,228 control chromosomes in the GnomAD database, including 2,544 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.17 (2544 hom., cov: 33)
• Consequence: TFAP2B NM_003221.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.12
• Publications: 218 publications found

Genes affected

TFAP2B (HGNC:11743): (transcription factor AP-2 beta) This gene encodes a member of the AP-2 family of transcription factors. AP-2 proteins form homo- or hetero-dimers with other AP-2 family members and bind specific DNA sequences. They are thought to stimulate cell proliferation and suppress terminal differentiation of specific cell types during embryonic development. Specific AP-2 family members differ in their expression patterns and binding affinity for different promoters. This protein functions as both a transcriptional activator and repressor. Mutations in this gene result in autosomal dominant Char syndrome, suggesting that this gene functions in the differentiation of neural crest cell derivatives. [provided by RefSeq, Jul 2008]

TFAP2B Gene-Disease associations (from GenCC):

• Char syndrome

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, Labcorp Genetics (formerly Invitae), Orphanet
• familial patent arterial duct

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Benign. The variant received -10 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.23).
• BA1: GnomAd4 highest subpopulation (AMR) allele frequency at 95% confidence interval = 0.273 is higher than 0.05.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_003221.4. 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
	TFAP2B	NM_003221.4	MANE Select	c.602-724A>G		intron	N/A	NP_003212.2

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TFAP2B	ENST00000393655.4	TSL:1 MANE Select	c.602-724A>G		intron	N/A	ENSP00000377265.2

Frequencies

GnomAD3 genomes AF: 0.172 AC: 26228 AN: 152112 Hom.: 2544 Cov.: 33

Gnomad AFR AF: 0.102

Gnomad AMI AF: 0.125

Gnomad AMR AF: 0.280

Gnomad ASJ AF: 0.156

Gnomad EAS AF: 0.164

Gnomad SAS AF: 0.218

Gnomad FIN AF: 0.194

Gnomad MID AF: 0.149

Gnomad NFE AF: 0.186

Gnomad OTH AF: 0.189

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

GnomAD4 genome AF: 0.172 AC: 26236 AN: 152228 Hom.: 2544 Cov.: 33 AF XY: 0.174 AC XY: 12967 AN XY: 74422

African (AFR) AF: 0.102 AC: 4230 AN: 41540

American (AMR) AF: 0.280 AC: 4285 AN: 15292

Ashkenazi Jewish (ASJ) AF: 0.156 AC: 543 AN: 3472

East Asian (EAS) AF: 0.164 AC: 851 AN: 5188

South Asian (SAS) AF: 0.218 AC: 1053 AN: 4822

European-Finnish (FIN) AF: 0.194 AC: 2057 AN: 10600

Middle Eastern (MID) AF: 0.153 AC: 45 AN: 294

European-Non Finnish (NFE) AF: 0.186 AC: 12662 AN: 67996

Other (OTH) AF: 0.188 AC: 396 AN: 2112

Alfa AF: 0.185 Hom.: 12068

Bravo AF: 0.178

Asia WGS AF: 0.228 AC: 793 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.23
CADD	Benign	18
DANN	Benign	0.74
PhyloP100		1.1
Mutation Taster		=100/0	polymorphism (auto)

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

Other links and lift over

dbSNP: rs987237; hg19: chr6-50803050;