Genetic Variant THAP9:p.Val448Ala (chr4-82917555-T-C) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_024672.6(THAP9):c.1343T>C(p.Val448Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000496 in 1,613,868 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000048 ( 0 hom. )

Consequence

THAP9
NM_024672.6 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.242

Variant links:

Genes affected

THAP9 (HGNC:23192): (THAP domain containing 9) Enables sequence-specific DNA binding activity and transposase activity. Involved in DNA integration and transposition, DNA-mediated. [provided by Alliance of Genome Resources, Apr 2022]

THAP9 links:

LIN54 (HGNC:25397): (lin-54 DREAM MuvB core complex component) LIN54 is a component of the LIN, or DREAM, complex, an essential regulator of cell cycle genes (Schmit et al., 2009 [PubMed 19725879]).[supplied by OMIM, Dec 2010]

LIN54 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.04946971).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
THAP9	NM_024672.6 link	c.1343T>C	p.Val448Ala	missense_variant	Exon 5 of 5	ENST00000302236.10	NP_078948.3	Q9H5L6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
THAP9	ENST00000302236.10 link	c.1343T>C	p.Val448Ala	missense_variant	Exon 5 of 5	1	NM_024672.6	ENSP00000305533.5	Q9H5L6
THAP9	ENST00000505901.1 link	n.*1100T>C		non_coding_transcript_exon_variant	Exon 6 of 6	2		ENSP00000425966.1	F2Z371
THAP9	ENST00000505901.1 link	n.*1100T>C		3_prime_UTR_variant	Exon 6 of 6	2		ENSP00000425966.1	F2Z371
LIN54	ENST00000505905.1 link	n.305-4114A>G		intron_variant	Intron 2 of 3	2

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152198

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000399

AC:

AN:

250634

Hom.:

AF XY:

0.00

AC XY:

AN XY:

135624

show subpopulations

Gnomad AFR exome

AF:

0.0000624

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS 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:

0.00000479

AC:

AN:

1461670

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

727104

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000540

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152198

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74362

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000113

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Feb 10, 2025

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1343T>C (p.V448A) alteration is located in exon 5 (coding exon 5) of the THAP9 gene. This alteration results from a T to C substitution at nucleotide position 1343, causing the valine (V) at amino acid position 448 to be replaced by an alanine (A). 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

0.063

BayesDel_addAF

Benign

-0.28

BayesDel_noAF

Benign

-0.45

CADD

Benign

0.39

DANN

Benign

0.40

DEOGEN2

Benign

0.0015

Eigen

Benign

-1.6

Eigen_PC

Benign

-1.7

FATHMM_MKL

Benign

0.014

LIST_S2

Benign

0.47

M_CAP

Uncertain

0.091

MetaRNN

Benign

0.049

MetaSVM

Benign

-0.59

MutationAssessor

Benign

0.54

PrimateAI

Benign

0.42

PROVEAN

Benign

-0.37

REVEL

Benign

0.26

Sift

Benign

0.57

Sift4G

Benign

0.23

Polyphen

0.0

Vest4

0.067

MVP

0.22

MPC

0.36

ClinPred

0.019

GERP RS

-5.3

Varity_R

0.012

gMVP

0.18

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over