chr4-11399366-T-C

Position:

• chr4-11399366-T-C

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_005114.4(HS3ST1):​c.640A>G​(p.Ile214Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,788 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: 33)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: HS3ST1 NM_005114.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.03

Genes affected

HS3ST1 (HGNC:5194): (heparan sulfate-glucosamine 3-sulfotransferase 1) Heparan sulfate biosynthetic enzymes are key components in generating a myriad of distinct heparan sulfate fine structures that carry out multiple biologic activities. The enzyme encoded by this gene is a member of the heparan sulfate biosynthetic enzyme family. It possesses both heparan sulfate glucosaminyl 3-O-sulfotransferase activity, anticoagulant heparan sulfate conversion activity, and is a rate limiting enzyme for synthesis of anticoagulant heparan. This enzyme is an intraluminal Golgi resident protein. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.1988062).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
HS3ST1	NM_005114.4	c.640A>G	p.Ile214Val	missense_variant	2/2	ENST00000002596.6	NP_005105.1
HS3ST1	XM_011513913.4	c.640A>G	p.Ile214Val	missense_variant	2/2		XP_011512215.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
HS3ST1	ENST00000002596.6	c.640A>G	p.Ile214Val	missense_variant	2/2	1	NM_005114.4	ENSP00000002596.5

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461788 Hom.: 0 Cov.: 30 AF XY: 0.00 AC XY: 0 AN XY: 727184

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: 0.00

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Aug 01, 2024

The c.640A>G (p.I214V) alteration is located in exon 2 (coding exon 1) of the HS3ST1 gene. This alteration results from a A to G substitution at nucleotide position 640, causing the isoleucine (I) at amino acid position 214 to be replaced by a valine (V). 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	0.069
BayesDel_addAF	Benign	-0.14	T
BayesDel_noAF	Benign	-0.44
CADD	Benign	4.3
DANN	Benign	0.94
DEOGEN2	Benign	0.18	T
Eigen	Benign	-0.48
Eigen_PC	Benign	-0.31
FATHMM_MKL	Benign	0.74	D
LIST_S2	Benign	0.77	T
M_CAP	Benign	0.011	T
MetaRNN	Benign	0.20	T
MetaSVM	Benign	-0.88	T
MutationAssessor	Benign	0.66	N
PrimateAI	Benign	0.32	T
PROVEAN	Benign	-0.32	N
REVEL	Benign	0.15
Sift	Benign	0.37	T
Sift4G	Benign	0.54	T
Polyphen		0.0030	B
Vest4		0.060
MutPred		0.66		Loss of catalytic residue at I214 (P = 0.096);
MVP		0.72
MPC		0.38
ClinPred		0.14	T
GERP RS		1.6
Varity_R		0.066
gMVP		0.24

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr4-11400990;