4-152770209-C-T

Variant names:

• chr4-152770209-C-T
• NM_145720.4:c.796G>A

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_145720.4(TIGD4):​c.796G>A​(p.Glu266Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: TIGD4 NM_145720.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.98

Genes affected

TIGD4 (HGNC:18335): (tigger transposable element derived 4) The protein encoded by this gene belongs to the tigger subfamily of the pogo superfamily of DNA-mediated transposons in humans. These proteins are related to DNA transposons found in fungi and nematodes, and more distantly to the Tc1 and mariner transposases. They are also very similar to the major mammalian centromere protein B. The exact function of this gene is not known. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.24291807).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TIGD4	NM_145720.4	c.796G>A	p.Glu266Lys	missense_variant	Exon 2 of 2	ENST00000304337.3	NP_663772.1
TIGD4	XM_005262807.5	c.796G>A	p.Glu266Lys	missense_variant	Exon 3 of 3		XP_005262864.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TIGD4	ENST00000304337.3	c.796G>A	p.Glu266Lys	missense_variant	Exon 2 of 2	1	NM_145720.4	ENSP00000355162.2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 34

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Apr 19, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.796G>A (p.E266K) alteration is located in exon 2 (coding exon 1) of the TIGD4 gene. This alteration results from a G to A substitution at nucleotide position 796, causing the glutamic acid (E) at amino acid position 266 to be replaced by a lysine (K). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.12
BayesDel_addAF	Uncertain	0.019	T
BayesDel_noAF	Benign	-0.21
CADD	Benign	23
DANN	Uncertain	1.0
DEOGEN2	Benign	0.0075	T
Eigen	Benign	-0.040
Eigen_PC	Benign	0.12
FATHMM_MKL	Uncertain	0.90	D
LIST_S2	Benign	0.79	T
M_CAP	Benign	0.0076	T
MetaRNN	Benign	0.24	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	1.0	L
PrimateAI	Uncertain	0.52	T
PROVEAN	Benign	-1.2	N
REVEL	Benign	0.13
Sift	Benign	0.18	T
Sift4G	Benign	0.081	T
Polyphen		0.32	B
Vest4		0.42
MutPred		0.58		Gain of MoRF binding (P = 0.002);
MVP		0.30
MPC		0.045
ClinPred		0.71	D
GERP RS		5.2
Varity_R		0.34
gMVP		0.58

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr4-153691361;