NM_001099922.3:c.638G>C

Variant names:

• chrX-111708281-G-C
• rs374748006
• NM_001099922.3:c.638G>C

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2 BP4

The NM_001099922.3(ALG13):​c.638G>C​(p.Ser213Thr) variant causes a missense change. The variant allele was found at a frequency of 0.000000911 in 1,098,075 control chromosomes in the GnomAD database, with no homozygous occurrence. There are no hemizygote samples in GnomAD. In-silico tool predicts 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. S213N) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 23)
  • Exomes 𝑓: 9.1e-7 (0 hom. 0 hem.)
• Consequence: ALG13 NM_001099922.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 4.83
• Publications: 0 publications found

Genes affected

ALG13 (HGNC:30881): (ALG13 UDP-N-acetylglucosaminyltransferase subunit) The protein encoded by this gene is a subunit of a bipartite UDP-N-acetylglucosamine transferase. It heterodimerizes with asparagine-linked glycosylation 14 homolog to form a functional UDP-GlcNAc glycosyltransferase that catalyzes the second sugar addition of the highly conserved oligosaccharide precursor in endoplasmic reticulum N-linked glycosylation. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Dec 2009]

ALG13-AS1 (HGNC:41277): (ALG13 antisense RNA 1)

ACMG classification

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.27156594).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ALG13	NM_001099922.3	c.638G>C	p.Ser213Thr	missense_variant	Exon 4 of 27	ENST00000394780.8	NP_001093392.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ALG13	ENST00000394780.8	c.638G>C	p.Ser213Thr	missense_variant	Exon 4 of 27	2	NM_001099922.3	ENSP00000378260.3

Frequencies

GnomAD3 genomes Cov.: 23

GnomAD4 exome AF: 9.11e-7 AC: 1 AN: 1098075 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 363501

African (AFR) AF: 0.00 AC: 0 AN: 26402

American (AMR) AF: 0.00 AC: 0 AN: 35207

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 19385

East Asian (EAS) AF: 0.00 AC: 0 AN: 30204

South Asian (SAS) AF: 0.00 AC: 0 AN: 54147

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 40517

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 4136

European-Non Finnish (NFE) AF: 0.00000119 AC: 1 AN: 841996

Other (OTH) AF: 0.00 AC: 0 AN: 46081

GnomAD4 genome Cov.: 23

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.089
BayesDel_addAF	Benign	-0.26	T
BayesDel_noAF	Benign	-0.61
CADD	Benign	17
DANN	Uncertain	0.98
DEOGEN2	Benign	0.23	T;.;.;.;.
FATHMM_MKL	Uncertain	0.97	D
LIST_S2	Benign	0.63	T;T;.;T;.
M_CAP	Pathogenic	0.43	D
MetaRNN	Benign	0.27	T;T;T;T;T
MetaSVM	Benign	-0.77	T
MutationAssessor	Benign	0.34	N;.;.;.;.
PhyloP100		4.8
PrimateAI	Benign	0.33	T
PROVEAN	Benign	-1.0	N;.;N;.;.
REVEL	Benign	0.063
Sift	Uncertain	0.0090	D;.;D;.;.
Sift4G	Uncertain	0.0030	D;D;D;D;D
Polyphen		0.094	B;B;B;B;B
Vest4		0.15
MutPred		0.40		Loss of disorder (P = 0.0726);.;.;.;.;
MVP		0.49
MPC		0.18
ClinPred		0.40	T
GERP RS		5.7
Varity_R		0.14
gMVP		0.13
Mutation Taster		=96/4	polymorphism

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs374748006; hg19: chrX-110951509;