chr6-10409973-G-GCCGTGCA

Position:

• chr6-10409973-G-GCCGTGCA

Variant summary

Our verdict is Pathogenic. Variant got 12 ACMG points: 12P and 0B. PVS1 PM2 PP5_Moderate

The NM_001372066.1(TFAP2A):​c.413_414insTGCACGG​(p.Pro139AlafsTer34) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Likely pathogenic (★). Variant results in nonsense mediated mRNA decay.

• Frequency: Genomes: not found (cov: 32)
• Consequence: TFAP2A NM_001372066.1 frameshift
• Clinical Significance: Likely pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: 3.44

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-AS1 (HGNC:40579): (TFAP2A antisense RNA 1)

ACMG classification

Verdict is Pathogenic. Variant got 12 ACMG points.

• PVS1: Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 6-10409973-G-GCCGTGCA is Pathogenic according to our data. Variant chr6-10409973-G-GCCGTGCA is described in ClinVar as [Likely_pathogenic]. Clinvar id is 547796.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
TFAP2A	NM_001372066.1	c.413_414insTGCACGG	p.Pro139AlafsTer34	frameshift_variant	2/7	ENST00000379613.10	NP_001358995.1
TFAP2A	NM_001032280.3	c.389_390insTGCACGG	p.Pro131AlafsTer34	frameshift_variant	2/7		NP_001027451.1
TFAP2A	NM_001042425.3	c.395_396insTGCACGG	p.Pro133AlafsTer34	frameshift_variant	2/7		NP_001035890.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
TFAP2A	ENST00000379613.10	c.413_414insTGCACGG	p.Pro139AlafsTer34	frameshift_variant	2/7	1	NM_001372066.1	ENSP00000368933	A1
TFAP2A-AS1	ENST00000420777.1	n.58+577_58+583dup		intron_variant, non_coding_transcript_variant		5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:1

Revision: criteria provided, single submitter

Submissions by phenotype

Branchiooculofacial syndrome Pathogenic:1

Likely pathogenic, criteria provided, single submitter

clinical testing

Center for Human Genetics, Inc, Center for Human Genetics, Inc

Nov 01, 2016

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Computational scores

Source: dbNSFP v4.3

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs1554112492; hg19: chr6-10410206;