2-74515815-C-T

Variant names:

• chr2-74515815-C-T
• rs140224606
• NM_016170.5:c.583C>T

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_016170.5(TLX2):​c.583C>T​(p.Arg195Cys) variant causes a missense change. The variant allele was found at a frequency of 0.000000685 in 1,460,314 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R195L) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: TLX2 NM_016170.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 4.32
• Publications: 1 publications found

Genes affected

TLX2 (HGNC:5057): (T cell leukemia homeobox 2) This gene is a member of an orphan homeobox-containing transcription factor family. Studies of the mouse ortholog have shown that the encoded protein is crucial for the development of the enteric nervous system; in humans, loss-of-function may play a role in tumorigenesis of gastrointestinal stromal tumors. [provided by RefSeq, May 2010]

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_016170.5. 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
	TLX2	NM_016170.5	MANE Select	c.583C>T	p.Arg195Cys	missense	Exon 2 of 3	NP_057254.1	O43763

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TLX2	ENST00000233638.8	TSL:1 MANE Select	c.583C>T	p.Arg195Cys	missense	Exon 2 of 3	ENSP00000233638.6	O43763
	TLX2	ENST00000621092.1	TSL:1	c.194C>T	p.Ala65Val	missense	Exon 3 of 4	ENSP00000482690.1	F1T0F2
	TLX2	ENST00000497238.1	TSL:5	n.*154C>T		downstream_gene	N/A

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD2 exomes AF: 0.00 AC: 0 AN: 246174 AF XY: 0.00

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 6.85e-7 AC: 1 AN: 1460314 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 726458

African (AFR) AF: 0.00 AC: 0 AN: 33468

American (AMR) AF: 0.00 AC: 0 AN: 44662

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26102

East Asian (EAS) AF: 0.00 AC: 0 AN: 39674

South Asian (SAS) AF: 0.00 AC: 0 AN: 86230

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 52354

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5766

European-Non Finnish (NFE) AF: 9.00e-7 AC: 1 AN: 1111714

Other (OTH) AF: 0.00 AC: 0 AN: 60344

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.33
BayesDel_addAF	Pathogenic	0.52	D
BayesDel_noAF	Uncertain	0.030
CADD	Pathogenic	32
DANN	Pathogenic	1.0
DEOGEN2	Benign	0.35	T
Eigen	Uncertain	0.51
Eigen_PC	Uncertain	0.50
FATHMM_MKL	Uncertain	0.95	D
M_CAP	Pathogenic	0.59	D
MetaRNN	Uncertain	0.65	D
PhyloP100		4.3
Sift4G	Benign	0.10	T
Polyphen		1.0	D
Vest4		0.31
MVP		0.73
ClinPred		1.0	D
GERP RS		4.2
Varity_R		0.78
Mutation Taster		=44/56	disease causing

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: rs140224606; hg19: chr2-74742942;