7-108564988-C-T

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 0P and 8B. BP4_Strong BS2

The NM_001130475.3(THAP5):c.391G>A(p.Val131Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000232 in 1,552,674 control chromosomes in the GnomAD database, including 2 homozygotes. 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 (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V131D) has been classified as Uncertain significance.

• Frequency:
  • Genomes: 𝑓 0.0000066 (0 hom., cov: 33)
  • Exomes 𝑓: 0.000025 (2 hom.)
• Consequence: THAP5 NM_001130475.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.286

Genes affected

THAP5 (HGNC:23188): (THAP domain containing 5) Enables protease binding activity. Involved in negative regulation of cell cycle and negative regulation of transcription by RNA polymerase II. Located in chromatin and nucleoplasm. [provided by Alliance of Genome Resources, Apr 2022]

PNPLA8 (HGNC:28900): (patatin like phospholipase domain containing 8) This gene encodes a member of the patatin-like phospholipase domain containing protein family. Members of this family are phospholipases which catalyze the cleavage of fatty acids from membrane phospholipids. The product of this gene is a calcium-independent phospholipase. Mutations in this gene have been associated with mitochondrial myopathy with lactic acidosis. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, May 2015]

ACMG classification

Verdict is Benign. Variant got -8 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.025787532).
• BS2: High Homozygotes in GnomAdExome at 2 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
THAP5	NM_001130475.3	c.391G>A	p.Val131Ile	missense_variant	3/3	ENST00000415914.4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
THAP5	ENST00000415914.4	c.391G>A	p.Val131Ile	missense_variant	3/3	1	NM_001130475.3	P1

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152164 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000207

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD3 exomes AF: 0.0000932 AC: 15 AN: 160946 Hom.: 2 AF XY: 0.000106 AC XY: 9 AN XY: 85038

Gnomad AFR exome AF: 0.000118

Gnomad AMR exome AF: 0.0000402

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.000563

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000250 AC: 35 AN: 1400392 Hom.: 2 Cov.: 31 AF XY: 0.0000347 AC XY: 24 AN XY: 690902

Gnomad4 AFR exome AF: 0.0000316

Gnomad4 AMR exome AF: 0.0000839

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.000339

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000185

Gnomad4 OTH exome AF: 0.0000345

GnomAD4 genome AF: 0.00000657 AC: 1 AN: 152282 Hom.: 0 Cov.: 33 AF XY: 0.0000134 AC XY: 1 AN XY: 74464

Gnomad4 AFR AF: 0.00

Gnomad4 AMR AF: 0.00

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.000207

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.00

Gnomad4 OTH AF: 0.00

Bravo AF: 0.00000378

ExAC AF: 0.0000815 AC: 7

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 05, 2023

The c.391G>A (p.V131I) alteration is located in exon 3 (coding exon 3) of the THAP5 gene. This alteration results from a G to A substitution at nucleotide position 391, causing the valine (V) at amino acid position 131 to be replaced by an isoleucine (I). 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	0.070
BayesDel_addAF	Benign	-0.31	T
BayesDel_noAF	Benign	-0.34
Cadd	Benign	2.0
Dann	Benign	0.74
DEOGEN2	Benign	0.036	T;.
Eigen	Benign	-0.96
Eigen_PC	Benign	-0.98
FATHMM_MKL	Benign	0.11	N
LIST_S2	Benign	0.46	T;T
M_CAP	Benign	0.059	D
MetaRNN	Benign	0.026	T;T
MetaSVM	Uncertain	-0.16	T
MutationAssessor	Uncertain	2.2	M;.
MutationTaster	Benign	1.0	N;N;N
PrimateAI	Benign	0.32	T
PROVEAN	Benign	-0.22	N;N
REVEL	Benign	0.11
Sift	Benign	0.16	T;T
Sift4G	Benign	0.40	T;T
Polyphen		0.0010	B;.
Vest4		0.034
MutPred		0.16		Loss of sheet (P = 0.0817);.;
MVP		0.048
MPC		0.070
ClinPred		0.028	T
GERP RS		1.4
Varity_R		0.021
gMVP		0.15

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: rs532108625; hg19: chr7-108205432;