NM_003773.5:c.443A>G

Variant names:

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2PP3PP5

The NM_003773.5(HYAL2):c.443A>G(p.Lys148Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000496 in 1,613,296 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 Pathogenic (no stars).

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000021 ( 0 hom. )

Consequence

HYAL2
NM_003773.5 missense

Scores

Clinical Significance

Pathogenic no assertion criteria provided P:2

Conservation

PhyloP100: 8.02

Variant links:

Genes affected

HYAL2 (HGNC:5321): (hyaluronidase 2) This gene encodes a weak acid-active hyaluronidase. The encoded protein is similar in structure to other more active hyaluronidases. Hyaluronidases degrade hyaluronan, one of the major glycosaminoglycans of the extracellular matrix. Hyaluronan and fragments of hyaluronan are thought to be involved in cell proliferation, migration and differentiation. Although it was previously thought to be a lysosomal hyaluronidase that is active at a pH below 4, the encoded protein is likely a GPI-anchored cell surface protein. This hyaluronidase serves as a receptor for the oncogenic virus Jaagsiekte sheep retrovirus. The gene is one of several related genes in a region of chromosome 3p21.3 associated with tumor suppression. This gene encodes two alternatively spliced transcript variants which differ only in the 5' UTR.[provided by RefSeq, Mar 2010]

HYAL2 links:

TUSC2 (HGNC:17034): (tumor suppressor 2, mitochondrial calcium regulator) Predicted to be involved in inflammatory response and regulation of mitochondrial membrane potential. Predicted to act upstream of or within several processes, including natural killer cell differentiation; neutrophil-mediated killing of gram-negative bacterium; and regulation of cytokine production. Predicted to be active in mitochondrion. [provided by Alliance of Genome Resources, Apr 2022]

TUSC2 links:

Genome browser will be placed here

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, 0.766

PP5

Variant 3-50320047-T-C is Pathogenic according to our data. Variant chr3-50320047-T-C is described in ClinVar as [Pathogenic]. Clinvar id is 1065389.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
HYAL2	NM_003773.5 link	c.443A>G	p.Lys148Arg	missense_variant	Exon 2 of 4	ENST00000357750.9	NP_003764.3	Q12891
HYAL2	NM_033158.5 link	c.443A>G	p.Lys148Arg	missense_variant	Exon 3 of 5		NP_149348.2	Q12891
HYAL2	XM_005265524.3 link	c.443A>G	p.Lys148Arg	missense_variant	Exon 3 of 5		XP_005265581.1	Q12891
HYAL2	XM_005265525.3 link	c.443A>G	p.Lys148Arg	missense_variant	Exon 2 of 4		XP_005265582.1	Q12891

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
HYAL2	ENST00000357750.9 link	c.443A>G	p.Lys148Arg	missense_variant	Exon 2 of 4	1	NM_003773.5	ENSP00000350387.4		Q12891

Frequencies

GnomAD3 genomes

AF:

0.0000329

AC:

AN:

152200

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00330

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:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000205

AC:

AN:

1461096

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726850

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:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

8.99e-7

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

AF:

0.0000329

AC:

AN:

152200

Hom.:

Cov.:

AF XY:

0.0000404

AC XY:

AN XY:

74346

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:

0.0000294

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000453

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:2

Revision: no assertion criteria provided

LINK: link

Submissions by phenotype

Muggenthaler-Chowdhury-Chioza syndrome

Pathogenic:1

Jan 15, 2025

OMIM

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

- -

HYAL2 deficiency

Pathogenic:1

Dec 14, 2021

New Leaf Center

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: research

From Fasham et al 2021: Functional assays demonstrating a variant has abnormal protein function Cosegregation with disease in multiple affected family members (≤1/32) At extremely low frequency in gnomAD databases A strong consensus supporting a clinical diagnosis with a specific phenotype -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.21

BayesDel_addAF

Benign

-0.033

BayesDel_noAF

Benign

-0.28

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.55

D;D;D;D

Eigen

Uncertain

0.61

Eigen_PC

Uncertain

0.58

FATHMM_MKL

Uncertain

0.96

LIST_S2

Uncertain

0.88

.;.;.;D

M_CAP

Benign

0.028

MetaRNN

Pathogenic

0.77

D;D;D;D

MetaSVM

Benign

-0.99

MutationAssessor

Benign

2.0

M;M;M;M

PrimateAI

Uncertain

0.61

PROVEAN

Benign

-2.2

N;N;N;N

REVEL

Uncertain

0.34

Sift

Benign

0.25

T;T;T;T

Sift4G

Benign

0.17

T;T;T;T

Polyphen

1.0

D;D;D;D

Vest4

0.85

MutPred

0.72

Loss of methylation at K148 (P = 0.052);Loss of methylation at K148 (P = 0.052);Loss of methylation at K148 (P = 0.052);Loss of methylation at K148 (P = 0.052);

MVP

0.83

MPC

1.3

ClinPred

0.97

GERP RS

5.8

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.22

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