chr16-69114950-G-A
Variant summary
Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2PP2
The NM_001199280.2(HAS3):c.1346G>A(p.Ser449Asn) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★).
Frequency
Genomes: not found (cov: 32)
Consequence
HAS3
NM_001199280.2 missense
NM_001199280.2 missense
Scores
5
3
9
Clinical Significance
Conservation
PhyloP100: 10.0
Genes affected
HAS3 (HGNC:4820): (hyaluronan synthase 3) The protein encoded by this gene is involved in the synthesis of the unbranched glycosaminoglycan hyaluronan, or hyaluronic acid, which is a major constituent of the extracellular matrix. This gene is a member of the NODC/HAS gene family. Compared to the proteins encoded by other members of this gene family, this protein appears to be more of a regulator of hyaluronan synthesis. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Dec 2010]
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ACMG classification
Classification made for transcript
Verdict is Uncertain_significance. Variant got 3 ACMG points.
PM2
?
Very rare variant in population databases, with high coverage;
PP2
?
Missense variant where missense usually causes diseases, HAS3
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
HAS3 | NM_001199280.2 | c.1346G>A | p.Ser449Asn | missense_variant | 4/4 | ENST00000569188.6 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
HAS3 | ENST00000569188.6 | c.1346G>A | p.Ser449Asn | missense_variant | 4/4 | 2 | NM_001199280.2 | P1 | |
HAS3 | ENST00000306560.1 | c.1346G>A | p.Ser449Asn | missense_variant | 4/4 | 1 | P1 | ||
HAS3 | ENST00000219322.7 | c.738+1408G>A | intron_variant | 1 |
Frequencies
GnomAD3 genomes ? Cov.: 32
GnomAD3 genomes
?
Cov.:
32
GnomAD4 exome Cov.: 34
GnomAD4 exome
Cov.:
34
GnomAD4 genome ? Cov.: 32
GnomAD4 genome
?
Cov.:
32
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 | Dec 20, 2021 | The c.1346G>A (p.S449N) alteration is located in exon 4 (coding exon 3) of the HAS3 gene. This alteration results from a G to A substitution at nucleotide position 1346, causing the serine (S) at amino acid position 449 to be replaced by an asparagine (N). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
BayesDel_addAF
Benign
T
BayesDel_noAF
Benign
Cadd
Pathogenic
Dann
Uncertain
DEOGEN2
Benign
T;T
Eigen
Pathogenic
Eigen_PC
Pathogenic
FATHMM_MKL
Pathogenic
D
M_CAP
Benign
D
MetaRNN
Uncertain
D;D
MetaSVM
Benign
T
MutationAssessor
Uncertain
M;M
MutationTaster
Benign
D;D;D
PrimateAI
Pathogenic
D
PROVEAN
Benign
N;N
Sift
Benign
T;T
Sift4G
Benign
T;T
Polyphen
D;D
Vest4
MutPred
Loss of glycosylation at S449 (P = 0.0665);Loss of glycosylation at S449 (P = 0.0665);
MVP
MPC
1.6
ClinPred
D
GERP RS
Varity_R
gMVP
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at
Publications
No publications associated with this variant yet.