3-25729274-A-G

Variant names:

• chr3-25729274-A-G
• rs760580010
• NM_018297.4:c.1470T>C

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 2P and 7B. PM2 BP4_Strong BP6_Moderate BP7

The NM_018297.4(NGLY1):​c.1470T>C​(p.Ser490Ser) variant causes a synonymous 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. Variant has been reported in ClinVar as Likely benign (★). Synonymous variant affecting the same amino acid position (i.e. S490S) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: NGLY1 NM_018297.4 synonymous
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -0.359
• Publications: 0 publications found

Genes affected

NGLY1 (HGNC:17646): (N-glycanase 1) This gene encodes an enzyme that catalyzes hydrolysis of an N(4)-(acetyl-beta-D-glucosaminyl) asparagine residue to N-acetyl-beta-D-glucosaminylamine and a peptide containing an aspartate residue. The encoded enzyme may play a role in the proteasome-mediated degradation of misfolded glycoproteins. Multiple transcript variants encoding different isoforms have been found for this gene.[provided by RefSeq, Feb 2009]

NGLY1 Gene-Disease associations (from GenCC):

• congenital disorder of deglycosylation 1

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: ClinGen, G2P, Labcorp Genetics (formerly Invitae)
• NGLY1-deficiency

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_benign. The variant received -5 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.76).
• BP6: Variant 3-25729274-A-G is Benign according to our data. Variant chr3-25729274-A-G is described in ClinVar as Likely_benign. ClinVar VariationId is 2770038.Status of the report is criteria_provided_single_submitter, 1 stars.
• BP7: Synonymous conserved (PhyloP=-0.359 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_018297.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NGLY1	NM_018297.4	MANE Select	c.1470T>C	p.Ser490Ser	synonymous	Exon 10 of 12	NP_060767.2
	NGLY1	NM_001145293.2		c.1416T>C	p.Ser472Ser	synonymous	Exon 10 of 12	NP_001138765.1	Q96IV0-2
	NGLY1	NM_001145294.2		c.1344T>C	p.Ser448Ser	synonymous	Exon 10 of 12	NP_001138766.1	Q96IV0-5

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NGLY1	ENST00000280700.10	TSL:1 MANE Select	c.1470T>C	p.Ser490Ser	synonymous	Exon 10 of 12	ENSP00000280700.5	Q96IV0-1
	NGLY1	ENST00000428257.5	TSL:1	c.1416T>C	p.Ser472Ser	synonymous	Exon 10 of 12	ENSP00000387430.1	Q96IV0-2
	NGLY1	ENST00000308710.9	TSL:1	c.1407T>C	p.Ser469Ser	synonymous	Exon 10 of 12	ENSP00000307980.5	A0A0C4DFP4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1341632 Hom.: 0 Cov.: 29 AF XY: 0.00 AC XY: 0 AN XY: 662680

African (AFR) AF: 0.00 AC: 0 AN: 29420

American (AMR) AF: 0.00 AC: 0 AN: 35088

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 23048

East Asian (EAS) AF: 0.00 AC: 0 AN: 35116

South Asian (SAS) AF: 0.00 AC: 0 AN: 65266

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 49000

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5314

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1045106

Other (OTH) AF: 0.00 AC: 0 AN: 54274

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions

Significance: Likely benign

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	-	1	Congenital disorder of deglycosylation (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.76
CADD	Benign	6.1
DANN	Benign	0.70
PhyloP100		-0.36

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

Other links and lift over

dbSNP: rs760580010; hg19: chr3-25770765;