Variant 20-63559331-C-G details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_001037335.2(HELZ2):c.7865G>C(p.Ser2622Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000069 in 1,449,716 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.9e-7 ( 0 hom. )

Consequence

HELZ2
NM_001037335.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.579

Variant links:

Genes affected

HELZ2 (HGNC:30021): (helicase with zinc finger 2) The protein encoded by this gene is a nuclear transcriptional co-activator for peroxisome proliferator activated receptor alpha. The encoded protein contains a zinc finger and is a helicase that appears to be part of the peroxisome proliferator activated receptor alpha interacting complex. This gene is a member of the DNA2/NAM7 helicase gene family. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

HELZ2 links:

HELZ2 (HGNC:):

HELZ2 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.31319463).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
HELZ2	NM_001037335.2 linkuse as main transcript	c.7865G>C	p.Ser2622Thr	missense_variant	20/20	ENST00000467148.2	NP_001032412.2	Q9BYK8-1
HELZ2	NM_033405.3 linkuse as main transcript	c.6158G>C	p.Ser2053Thr	missense_variant	14/14		NP_208384.3	Q9BYK8-2
HELZ2	XM_024452006.2 linkuse as main transcript	c.7949G>C	p.Ser2650Thr	missense_variant	18/18		XP_024307774.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
HELZ2	ENST00000467148.2 linkuse as main transcript	c.7865G>C	p.Ser2622Thr	missense_variant	20/20	1	NM_001037335.2	ENSP00000417401.1	Q9BYK8-1
HELZ2	ENST00000427522.6 linkuse as main transcript	c.6158G>C	p.Ser2053Thr	missense_variant	14/14	1		ENSP00000393257.2	Q9BYK8-2
HELZ2	ENST00000478861.1 linkuse as main transcript	n.560-396G>C		intron_variant		5

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000427

AC:

AN:

234058

Hom.:

AF XY:

0.00000784

AC XY:

AN XY:

127524

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000303

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:

6.90e-7

AC:

AN:

1449716

Hom.:

Cov.:

AF XY:

0.00000139

AC XY:

AN XY:

719564

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000229

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Sep 27, 2024

The c.7865G>C (p.S2622T) alteration is located in exon 20 (coding exon 19) of the HELZ2 gene. This alteration results from a G to C substitution at nucleotide position 7865, causing the serine (S) at amino acid position 2622 to be replaced by a threonine (T). 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

0.091

BayesDel_addAF

Benign

-0.18

BayesDel_noAF

Benign

-0.41

CADD

Benign

DANN

Benign

0.96

DEOGEN2

Benign

0.021

.;T

Eigen

Benign

-0.68

Eigen_PC

Benign

-0.69

FATHMM_MKL

Benign

0.14

LIST_S2

Benign

0.57

T;T

M_CAP

Benign

0.026

MetaRNN

Benign

0.31

T;T

MetaSVM

Benign

-0.60

MutationAssessor

Benign

0.34

.;N

PrimateAI

Benign

0.43

PROVEAN

Benign

-0.63

N;N

REVEL

Benign

0.14

Sift

Benign

0.047

D;D

Sift4G

Uncertain

0.014

D;D

Polyphen

0.11

B;B

Vest4

0.13

MutPred

0.40

.;Loss of stability (P = 0.0141);

MVP

0.45

MPC

0.21

ClinPred

0.094

GERP RS

3.5

Varity_R

0.048

gMVP

0.23

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