2-128129099-T-C

Variant summary

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

The NM_020120.4(UGGT1):c.1297T>C(p.Ser433Pro) 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 1,461,798 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 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: 6.8e-7 (0 hom.)
• Consequence: UGGT1 NM_020120.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.94

Genes affected

UGGT1 (HGNC:15663): (UDP-glucose glycoprotein glucosyltransferase 1) UDP-glucose:glycoprotein glucosyltransferase (UGT) is a soluble protein of the endoplasmic reticulum (ER) that selectively reglucosylates unfolded glycoproteins, thus providing quality control for protein transport out of the ER.[supplied by OMIM, Oct 2009]

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=0.24116877).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
UGGT1	NM_020120.4	c.1297T>C	p.Ser433Pro	missense_variant	13/41	ENST00000259253.11

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
UGGT1	ENST00000259253.11	c.1297T>C	p.Ser433Pro	missense_variant	13/41	1	NM_020120.4	P1
UGGT1	ENST00000376723.7	c.*1337T>C		3_prime_UTR_variant, NMD_transcript_variant	13/41	1
UGGT1	ENST00000438277.5	c.*885T>C		3_prime_UTR_variant, NMD_transcript_variant	11/26	1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461798 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 727206

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.: 32

Bravo AF: 0.0000227

ESP6500AA AF: 0.00 AC: 0

ESP6500EA AF: 0.000116 AC: 1

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

Jun 02, 2023

The c.1297T>C (p.S433P) alteration is located in exon 13 (coding exon 13) of the UGGT1 gene. This alteration results from a T to C substitution at nucleotide position 1297, causing the serine (S) at amino acid position 433 to be replaced by a proline (P). 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	0.13
BayesDel_addAF	Benign	-0.099	T
BayesDel_noAF	Benign	-0.38
Cadd	Benign	18
Dann	Uncertain	0.99
DEOGEN2	Benign	0.040	T
Eigen	Benign	-0.26
Eigen_PC	Benign	-0.20
FATHMM_MKL	Uncertain	0.93	D
LIST_S2	Benign	0.80	T
M_CAP	Benign	0.011	T
MetaRNN	Benign	0.24	T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	1.5	L
MutationTaster	Benign	0.98	D;D
PrimateAI	Benign	0.42	T
PROVEAN	Benign	-1.7	N
REVEL	Benign	0.13
Sift	Benign	0.28	T
Sift4G	Benign	0.33	T
Polyphen		0.72	P
Vest4		0.26
MVP		0.69
MPC		0.16
ClinPred		0.48	T
GERP RS		1.6
Varity_R		0.18
gMVP		0.83

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: rs368032461; hg19: chr2-128886673;