NM_001109878.2:c.641T>C

Variant names:

• chrX-80026711-T-C
• rs104894946
• NM_001109878.2:c.641T>C

Variant summary

Our verdict is Likely pathogenic. The variant received 7 ACMG points: 7P and 0B. PM2 PP3_Strong PP5

The NM_001109878.2(TBX22):​c.641T>C​(p.Leu214Pro) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. 12/21 in silico tools predict a damaging outcome for this variant. Variant has been reported in ClinVar as Pathogenic (no stars).

• Frequency: Genomes: not found (cov: 23)
• Consequence: TBX22 NM_001109878.2 missense
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 7.24
• Publications: 4 publications found

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]

TBX22 Gene-Disease associations (from GenCC):

• cleft palate with or without ankyloglossia, X-linked

  Inheritance: XL Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, ClinGen, G2P, PanelApp Australia, Labcorp Genetics (formerly Invitae)
• Abruzzo-Erickson syndrome

  Inheritance: XL Classification: SUPPORTIVE, LIMITED Submitted by: Orphanet, G2P

ACMG classification

Our verdict: Likely_pathogenic. The variant received 7 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.993
• PP5: Variant X-80026711-T-C is Pathogenic according to our data. Variant chrX-80026711-T-C is described in ClinVar as Pathogenic. ClinVar VariationId is 11334.Status of the report is no_assertion_criteria_provided, 0 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001109878.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TBX22	NM_001109878.2	MANE Select	c.641T>C	p.Leu214Pro	missense	Exon 6 of 9	NP_001103348.1	Q9Y458-1
	TBX22	NM_016954.2		c.641T>C	p.Leu214Pro	missense	Exon 5 of 8	NP_058650.1	Q9Y458-1
	TBX22	NM_001109879.2		c.281T>C	p.Leu94Pro	missense	Exon 6 of 9	NP_001103349.1	Q9Y458-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TBX22	ENST00000373296.8	TSL:5 MANE Select	c.641T>C	p.Leu214Pro	missense	Exon 6 of 9	ENSP00000362393.3	Q9Y458-1
	TBX22	ENST00000373294.8	TSL:1	c.641T>C	p.Leu214Pro	missense	Exon 5 of 8	ENSP00000362390.5	Q9Y458-1
	TBX22	ENST00000626877.1	TSL:1	n.520T>C		non_coding_transcript_exon	Exon 4 of 7

Frequencies

GnomAD3 genomes Cov.: 23

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 23

Alfa AF: 0.00 Hom.: 0

ClinVar

ClinVar submissions

Significance: Pathogenic

Revision: no assertion criteria provided

Pathogenic	VUS	Benign	Condition
1	-	-	Cleft palate with ankyloglossia (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.99
BayesDel_addAF	Pathogenic	0.68	D
BayesDel_noAF	Pathogenic	0.74
CADD	Pathogenic	27
DANN	Pathogenic	1.0
DEOGEN2	Pathogenic	0.93	D
FATHMM_MKL	Pathogenic	0.98	D
M_CAP	Pathogenic	0.78	D
MetaRNN	Pathogenic	0.99	D
MetaSVM	Pathogenic	1.0	D
MutationAssessor	Pathogenic	4.3	H
PhyloP100		7.2
PrimateAI	Pathogenic	0.80	T
PROVEAN	Pathogenic	-5.9	D
REVEL	Pathogenic	0.95
Sift	Pathogenic	0.0	D
Sift4G	Pathogenic	0.0	D
Polyphen		1.0	D
Vest4		0.99
MutPred		0.93		Gain of disorder (P = 0.0067)
MVP		0.99
MPC		0.85
ClinPred		1.0	D
GERP RS		3.9
Varity_R		0.99
gMVP		0.95
Mutation Taster		=8/92	disease causing (ClinVar)

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: rs104894946; hg19: chrX-79282210;