NM_003549.4:c.679C>A

Variant names:

• chr3-50294924-G-T
• NM_003549.4:c.679C>A

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_003549.4(HYAL3):​c.679C>A​(p.Arg227Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000691 in 1,446,218 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: HYAL3 NM_003549.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.774

Genes affected

HYAL3 (HGNC:5322): (hyaluronidase 3) This gene encodes a member of the hyaluronidase family. Hyaluronidases are endoglycosidase enzymes that degrade hyaluronan, one of the major glycosaminoglycans of the extracellular matrix. The regulated turnover of hyaluronan plays a critical role in many biological processes including cell proliferation, migration and differentiation. The encoded protein may also play an important role in sperm function. This gene is one of several related genes in a region of chromosome 3p21.3 associated with tumor suppression, and the expression of specific transcript variants may be indicative of tumor status. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene, and some isoforms may lack hyaluronidase activity. This gene overlaps and is on the same strand as N-acetyltransferase 6 (GCN5-related), and some transcripts of each gene share a portion of the first exon. [provided by RefSeq, Jan 2011]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
HYAL3	NM_003549.4	c.679C>A	p.Arg227Ser	missense_variant	Exon 2 of 4	ENST00000336307.6	NP_003540.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
HYAL3	ENST00000336307.6	c.679C>A	p.Arg227Ser	missense_variant	Exon 2 of 4	1	NM_003549.4	ENSP00000337425.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 6.91e-7 AC: 1 AN: 1446218 Hom.: 0 Cov.: 30 AF XY: 0.00 AC XY: 0 AN XY: 716532

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: 0.0000168

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.25
BayesDel_addAF	Uncertain	0.051	T
BayesDel_noAF	Benign	-0.16
CADD	Benign	21
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.50	.;T;T;.
Eigen	Uncertain	0.28
Eigen_PC	Benign	0.18
FATHMM_MKL	Benign	0.17	N
LIST_S2	Benign	0.76	.;.;T;T
M_CAP	Benign	0.029	D
MetaRNN	Uncertain	0.63	D;D;D;D
MetaSVM	Benign	-0.86	T
MutationAssessor	Pathogenic	3.6	H;H;H;H
PrimateAI	Benign	0.29	T
PROVEAN	Uncertain	-3.8	D;D;.;D
REVEL	Benign	0.18
Sift	Uncertain	0.0060	D;D;.;D
Sift4G	Benign	0.28	T;D;D;T
Polyphen		0.95	P;P;P;P
Vest4		0.51
MutPred		0.77		Gain of glycosylation at R227 (P = 0.0127);Gain of glycosylation at R227 (P = 0.0127);Gain of glycosylation at R227 (P = 0.0127);Gain of glycosylation at R227 (P = 0.0127);
MVP		0.27
MPC		0.82
ClinPred		0.98	D
GERP RS		4.2
Varity_R		0.81
gMVP		0.85

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr3-50332355; COSMIC: COSV99807488; COSMIC: COSV99807488;