NM_003221.4:c.540+24_540+31dupCAAACAAA

Variant names:

• chr6-50823871-C-CACAAACAA
• rs368226832
• NM_003221.4:c.540+24_540+31dupCAAACAAA

Variant summary

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

The NM_003221.4(TFAP2B):​c.540+24_540+31dupCAAACAAA variant causes a intron 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: not found (cov: 0)
  • Exomes 𝑓: 7.2e-7 (0 hom.)
• Consequence: TFAP2B NM_003221.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.0710
• Publications: 0 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: Uncertain_significance. The variant received 0 ACMG points.

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.540+24_540+31dupCAAACAAA		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.540+6_540+7insACAAACAA		splice_region intron	N/A	ENSP00000377265.2
	TFAP2B	ENST00000344788.7	TSL:3	c.534+6_534+7insACAAACAA		splice_region intron	N/A	ENSP00000342252.3
	TFAP2B	ENST00000489228.1	TSL:2	n.*6_*7insACAAACAA		downstream_gene	N/A

Frequencies

GnomAD3 genomes Cov.: 0

GnomAD4 exome AF: 7.21e-7 AC: 1 AN: 1387016 Hom.: 0 Cov.: 0 AF XY: 0.00000146 AC XY: 1 AN XY: 684852

African (AFR) AF: 0.00 AC: 0 AN: 31270

American (AMR) AF: 0.00 AC: 0 AN: 35926

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25154

East Asian (EAS) AF: 0.00 AC: 0 AN: 35816

South Asian (SAS) AF: 0.00 AC: 0 AN: 79280

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 38342

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5686

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1077624

Other (OTH) AF: 0.0000173 AC: 1 AN: 57918

GnomAD4 genome Cov.: 0

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		0.071

Splicing

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

Other links and lift over

dbSNP: rs368226832; hg19: chr6-50791584;