rs200042243

Variant names:

• chr3-25764170-C-G
• rs200042243
• NM_018297.4:c.388G>C

Your query was ambiguous. Multiple possible variants found:

• chr3-25764170-C-G
• chr3-25764170-C-T

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_018297.4(NGLY1):​c.388G>C​(p.Ala130Pro) 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 1,461,882 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A130T) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: NGLY1 NM_018297.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -2.89
• Publications: 1 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, Labcorp Genetics (formerly Invitae), G2P
• NGLY1-deficiency

  Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Orphanet, PanelApp Australia

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.07415852).

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

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NGLY1	NM_018297.4	MANE Select	c.388G>C	p.Ala130Pro	missense	Exon 3 of 12	NP_060767.2
	NGLY1	NM_001145293.2		c.388G>C	p.Ala130Pro	missense	Exon 3 of 12	NP_001138765.1
	NGLY1	NM_001145294.2		c.262G>C	p.Ala88Pro	missense	Exon 3 of 12	NP_001138766.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NGLY1	ENST00000280700.10	TSL:1 MANE Select	c.388G>C	p.Ala130Pro	missense	Exon 3 of 12	ENSP00000280700.5
	NGLY1	ENST00000428257.5	TSL:1	c.388G>C	p.Ala130Pro	missense	Exon 3 of 12	ENSP00000387430.1
	NGLY1	ENST00000308710.9	TSL:1	c.379G>C	p.Ala127Pro	missense	Exon 3 of 12	ENSP00000307980.5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.00000398 AC: 1 AN: 251366 AF XY: 0.00000736

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000880

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461882 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 727240

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26134

East Asian (EAS) AF: 0.00 AC: 0 AN: 39698

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53420

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 8.99e-7 AC: 1 AN: 1112004

Other (OTH) AF: 0.00 AC: 0 AN: 60396

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.079
BayesDel_addAF	Benign	-0.23	T
BayesDel_noAF	Benign	-0.56
CADD	Benign	0.017
DANN	Benign	0.96
DEOGEN2	Benign	0.12	T
Eigen	Benign	-1.7
Eigen_PC	Benign	-1.8
FATHMM_MKL	Benign	0.016	N
LIST_S2	Benign	0.70	T
M_CAP	Benign	0.0078	T
MetaRNN	Benign	0.074	T
MetaSVM	Benign	-0.96	T
MutationAssessor	Benign	1.6	L
PhyloP100		-2.9
PrimateAI	Benign	0.22	T
PROVEAN	Benign	-0.96	N
REVEL	Benign	0.080
Sift	Benign	0.20	T
Sift4G	Benign	0.12	T
Polyphen		0.026	B
Vest4		0.19
MutPred		0.14		Loss of glycosylation at P135 (P = 0.0163)
MVP		0.21
MPC		0.043
ClinPred		0.087	T
GERP RS		-11
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.068
gMVP		0.34
Mutation Taster		=79/21	polymorphism

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: rs200042243; hg19: chr3-25805661;