rs77505745

Variant names:

• chr13-52012786-T-C
• rs77505745
• NM_001004127.3:c.44+324T>C

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_Strong BP6_Very_Strong BA1

The NM_001004127.3(ALG11):​c.44+324T>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0433 in 152,240 control chromosomes in the GnomAD database, including 190 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency: Genomes: 𝑓 0.043 (190 hom., cov: 32)
• Consequence: ALG11 NM_001004127.3 intron
• Clinical Significance: Likely benign criteria provided, multiple submitters, no conflicts B:2
• Conservation: PhyloP100: 0.340
• Publications: 1 publications found

Genes affected

ALG11 (HGNC:32456): (ALG11 alpha-1,2-mannosyltransferase) This gene encodes a GDP-Man:Man3GlcNAc2-PP-dolichol-alpha1,2-mannosyltransferase which is localized to the cytosolic side of the endoplasmic reticulum (ER) and catalyzes the transfer of the fourth and fifth mannose residue from GDP-mannose (GDP-Man) to Man3GlcNAc2-PP-dolichol and Man4GlcNAc2-PP-dolichol resulting in the production of Man5GlcNAc2-PP-dolichol. Mutations in this gene are associated with congenital disorder of glycosylation type Ip (CDGIP). This gene overlaps but is distinct from the UTP14, U3 small nucleolar ribonucleoprotein, homolog C (yeast) gene. A pseudogene of the GDP-Man:Man3GlcNAc2-PP-dolichol-alpha1,2-mannosyltransferase has been identified on chromosome 19. [provided by RefSeq, Aug 2010]

ALG11 Gene-Disease associations (from GenCC):

• ALG11-congenital disorder of glycosylation

  Inheritance: AR Classification: STRONG, MODERATE, SUPPORTIVE Submitted by: G2P, ClinGen, Ambry Genetics, Orphanet, PanelApp Australia, Labcorp Genetics (formerly Invitae)

ACMG classification

Our verdict: Benign. The variant received -20 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.8).
• BP6: Variant 13-52012786-T-C is Benign according to our data. Variant chr13-52012786-T-C is described in ClinVar as [Likely_benign]. Clinvar id is 487323.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BA1: GnomAd4 highest subpopulation (NFE) allele frequency at 95% confidence interval = 0.0676 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ALG11	NM_001004127.3	c.44+324T>C		intron_variant	Intron 1 of 3	ENST00000521508.2	NP_001004127.2
ALG11	NR_036571.3	n.65+324T>C		intron_variant	Intron 1 of 1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ALG11	ENST00000521508.2	c.44+324T>C		intron_variant	Intron 1 of 3	1	NM_001004127.3	ENSP00000430236.1

Frequencies

GnomAD3 genomes AF: 0.0433 AC: 6593 AN: 152122 Hom.: 190 Cov.: 32

Gnomad AFR AF: 0.0116

Gnomad AMI AF: 0.0615

Gnomad AMR AF: 0.0266

Gnomad ASJ AF: 0.0640

Gnomad EAS AF: 0.000579

Gnomad SAS AF: 0.0516

Gnomad FIN AF: 0.0348

Gnomad MID AF: 0.0253

Gnomad NFE AF: 0.0692

Gnomad OTH AF: 0.0420

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.0433 AC: 6592 AN: 152240 Hom.: 190 Cov.: 32 AF XY: 0.0410 AC XY: 3050 AN XY: 74438

African (AFR) AF: 0.0116 AC: 482 AN: 41550

American (AMR) AF: 0.0266 AC: 406 AN: 15288

Ashkenazi Jewish (ASJ) AF: 0.0640 AC: 222 AN: 3470

East Asian (EAS) AF: 0.000580 AC: 3 AN: 5172

South Asian (SAS) AF: 0.0514 AC: 248 AN: 4822

European-Finnish (FIN) AF: 0.0348 AC: 369 AN: 10608

Middle Eastern (MID) AF: 0.0238 AC: 7 AN: 294

European-Non Finnish (NFE) AF: 0.0693 AC: 4711 AN: 68010

Other (OTH) AF: 0.0416 AC: 88 AN: 2116

Alfa AF: 0.0661 Hom.: 426

Bravo AF: 0.0405

Asia WGS AF: 0.0230 AC: 81 AN: 3478

ClinVar

Significance: Likely benign

Submissions summary: Benign:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not provided Benign:1

-

Breakthrough Genomics, Breakthrough Genomics

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: not provided

- -

ALG11-congenital disorder of glycosylation Benign:1

Jan 06, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.80
CADD	Benign	7.0
DANN	Benign	0.61
PhyloP100		0.34
PromoterAI		0.018	Neutral
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		2.2
Mutation Taster		=100/0	polymorphism (auto)

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: rs77505745; hg19: chr13-52586922;