X-80014862-G-A

Variant summary

Our verdict is Benign. Variant got -9 ACMG points: 0P and 9B. BP4_Strong BP6 BS2

The NM_001109878.2(TBX22):c.-28G>A variant causes a 5 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000937 in 112,067 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 23 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

• Frequency:
  • Genomes: 𝑓 0.00094 (0 hom., 23 hem., cov: 23)
  • Exomes 𝑓: 0.0 (0 hom. 0 hem.)
  • Failed GnomAD Quality Control
• Consequence: TBX22 NM_001109878.2 5_prime_UTR
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1 B:1
• Conservation: PhyloP100: 0.351

Genes affected

TBX22 (HGNC:11600): (T-box transcription factor 22) This gene is a member of a phylogenetically conserved family of genes that share a common DNA-binding domain, the T-box. T-box genes encode transcription factors involved in the regulation of developmental processes. Mutations in this gene have been associated with the inherited X-linked disorder, Cleft palate with ankyloglossia, and it is believed to play a major role in human palatogenesis. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Benign. Variant got -9 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.87).
• BP6: Variant X-80014862-G-A is Benign according to our data. Variant chrX-80014862-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 368661.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=1, Uncertain_significance=1}.
• BS2: High Hemizygotes in GnomAd at 23 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
TBX22	NM_001109878.2	c.-28G>A		5_prime_UTR_variant	1/9	ENST00000373296.8
TBX22	NM_001109879.2	c.-384G>A		5_prime_UTR_variant	1/9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TBX22	ENST00000373296.8	c.-28G>A		5_prime_UTR_variant	1/9	5	NM_001109878.2	P1
TBX22	ENST00000476373.1	n.94G>A		non_coding_transcript_exon_variant	1/2	3
TBX22	ENST00000626498.2	c.-28G>A		5_prime_UTR_variant, NMD_transcript_variant	1/9	2

Frequencies

GnomAD3 genomes AF: 0.000937 AC: 105 AN: 112067 Hom.: 0 Cov.: 23 AF XY: 0.000672 AC XY: 23 AN XY: 34207

Gnomad AFR AF: 0.000259

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000473

Gnomad ASJ AF: 0.00189

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00156

Gnomad OTH AF: 0.00266

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 140 Hom.: 0 Cov.: 0 AF XY: 0.00 AC XY: 0 AN XY: 74

Gnomad4 AFR 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: 0.00

GnomAD4 genome AF: 0.000937 AC: 105 AN: 112067 Hom.: 0 Cov.: 23 AF XY: 0.000672 AC XY: 23 AN XY: 34207

Gnomad4 AFR AF: 0.000259

Gnomad4 AMR AF: 0.000473

Gnomad4 ASJ AF: 0.00189

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.00156

Gnomad4 OTH AF: 0.00266

Alfa AF: 0.00130 Hom.: 6

Bravo AF: 0.000865

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1 Benign:1

Revision: criteria provided, conflicting classifications

Submissions by phenotype

Cleft palate with or without ankyloglossia, X-linked Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 13, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -

not provided Benign:1

Likely benign, criteria provided, single submitter

clinical testing

CeGaT Center for Human Genetics Tuebingen

Dec 01, 2022

TBX22: BS2 -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.87
Cadd	Benign	4.2
Dann	Benign	0.44

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

Other links and lift over

dbSNP: rs746947861; hg19: chrX-79270361;