6-148941370-A-G

Position:

• chr6-148941370-A-G

Variant summary

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

The NM_005715.3(UST):​c.383A>G​(p.Lys128Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: UST NM_005715.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.58

Genes affected

UST (HGNC:17223): (uronyl 2-sulfotransferase) Uronyl 2-sulfotransferase transfers sulfate to the 2-position of uronyl residues, such as iduronyl residues in dermatan sulfate and glucuronyl residues in chondroitin sulfate (Kobayashi et al., 1999 [PubMed 10187838]).[supplied by OMIM, Mar 2008]

UST (HGNC:):

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=0.18531233).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
UST	NM_005715.3	c.383A>G	p.Lys128Arg	missense_variant	3/8	ENST00000367463.5	NP_005706.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
UST	ENST00000367463.5	c.383A>G	p.Lys128Arg	missense_variant	3/8	1	NM_005715.3	ENSP00000356433.4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1460498 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 726540

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 Cov.: 32

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

Jul 13, 2022

The c.383A>G (p.K128R) alteration is located in exon 3 (coding exon 3) of the UST gene. This alteration results from a A to G substitution at nucleotide position 383, causing the lysine (K) at amino acid position 128 to be replaced by an arginine (R). 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	0.068
BayesDel_addAF	Benign	-0.23	T
BayesDel_noAF	Benign	-0.57
CADD	Benign	18
DANN	Uncertain	1.0
DEOGEN2	Benign	0.12	T
Eigen	Benign	-0.33
Eigen_PC	Benign	-0.16
FATHMM_MKL	Uncertain	0.88	D
LIST_S2	Benign	0.83	T
M_CAP	Benign	0.0052	T
MetaRNN	Benign	0.19	T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	1.4	L
PrimateAI	Uncertain	0.77	T
PROVEAN	Benign	-1.0	N
REVEL	Benign	0.041
Sift	Benign	0.25	T
Sift4G	Benign	0.44	T
Polyphen		0.014	B
Vest4		0.33
MutPred		0.71		Loss of ubiquitination at K128 (P = 0.0297);
MVP		0.068
MPC		0.31
ClinPred		0.70	D
GERP RS		3.5
Varity_R		0.11
gMVP		0.41

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

Other links and lift over

dbSNP: rs1338332064; hg19: chr6-149262506;