Genetic Variant HELZ2:p.Ser2547Pro (chr20-63560189-A-G) – ACMG Classification: Uncertain_significance (4 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_001037335.2(HELZ2):c.7639T>C(p.Ser2547Pro) variant causes a missense change. The variant allele was found at a frequency of 0.0000141 in 141,612 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000014 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

HELZ2
NM_001037335.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.51

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:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.865

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
HELZ2	NM_001037335.2 link	c.7639T>C	p.Ser2547Pro	missense_variant	Exon 18 of 20	ENST00000467148.2	NP_001032412.2	Q9BYK8-1
HELZ2	NM_033405.3 link	c.5932T>C	p.Ser1978Pro	missense_variant	Exon 12 of 14		NP_208384.3	Q9BYK8-2
HELZ2	XM_024452006.2 link	c.7723T>C	p.Ser2575Pro	missense_variant	Exon 16 of 18		XP_024307774.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
HELZ2	ENST00000467148.2 link	c.7639T>C	p.Ser2547Pro	missense_variant	Exon 18 of 20	1	NM_001037335.2	ENSP00000417401.1	Q9BYK8-1
HELZ2	ENST00000427522.6 link	c.5932T>C	p.Ser1978Pro	missense_variant	Exon 12 of 14	1		ENSP00000393257.2	Q9BYK8-2
HELZ2	ENST00000478861.1 link	n.559+400T>C		intron_variant	Intron 5 of 5	5

Frequencies

GnomAD3 genomes

AF:

0.0000141

AC:

AN:

141612

Hom.:

Cov.:

show subpopulations

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:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000308

Gnomad OTH

AF:

0.00

GnomAD4 exome

Data not reliable, filtered out with message: AC0

AF:

0.00

AC:

AN:

1296400

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

640236

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:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000141

AC:

AN:

141612

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

68802

show subpopulations

Gnomad4 AFR

AF:

0.00

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:

0.0000308

Gnomad4 OTH

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Dec 09, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.7639T>C (p.S2547P) alteration is located in exon 18 (coding exon 17) of the HELZ2 gene. This alteration results from a T to C substitution at nucleotide position 7639, causing the serine (S) at amino acid position 2547 to be replaced by a proline (P). 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

Pathogenic

0.67

BayesDel_addAF

Pathogenic

0.23

BayesDel_noAF

Uncertain

0.090

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.74

.;D

Eigen

Uncertain

0.58

Eigen_PC

Uncertain

0.46

FATHMM_MKL

Uncertain

0.93

LIST_S2

Benign

0.77

T;T

M_CAP

Pathogenic

0.54

MetaRNN

Pathogenic

0.87

D;D

MetaSVM

Pathogenic

0.92

MutationAssessor

Pathogenic

3.9

.;H

PrimateAI

Uncertain

0.66

PROVEAN

Uncertain

-3.7

D;D

REVEL

Pathogenic

0.74

Sift

Uncertain

0.0050

D;D

Sift4G

Uncertain

0.0060

D;D

Polyphen

1.0

D;D

Vest4

0.65

MutPred

0.65

.;Gain of methylation at K2550 (P = 0.0449);

MVP

0.67

MPC

0.81

ClinPred

1.0

GERP RS

4.0

Varity_R

0.73

gMVP

0.88

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