chr13-52024762-T-G

Position:

• chr13-52024762-T-G

Variant summary

Our verdict is Benign. Variant got -21 ACMG points: 0P and 21B. BP4_Strong BP6_Very_Strong BP7 BS1 BS2

The NM_001004127.3(ALG11):​c.1032T>G​(p.Gly344=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000582 in 1,614,068 control chromosomes in the GnomAD database, including 8 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.0032 (3 hom., cov: 32)
  • Exomes 𝑓: 0.00031 (5 hom.)
• Consequence: ALG11 NM_001004127.3 synonymous
• Clinical Significance: Benign/Likely benign criteria provided, multiple submitters, no conflicts B:3
• Conservation: PhyloP100: -1.33

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]

UTP14C (HGNC:20321): (UTP14C small subunit processome component) Predicted to be involved in several processes, including meiotic cell cycle; rRNA processing; and spermatogenesis. Located in cytosol and nucleolus. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Benign. Variant got -21 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.86).
• BP6: Variant 13-52024762-T-G is Benign according to our data. Variant chr13-52024762-T-G is described in ClinVar as [Likely_benign]. Clinvar id is 381405.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BP7: Synonymous conserved (PhyloP=-1.33 with no splicing effect.
• BS1: Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00324 (493/152202) while in subpopulation AFR AF= 0.0107 (444/41520). AF 95% confidence interval is 0.00987. There are 3 homozygotes in gnomad4. There are 236 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.
• BS2: High Homozygotes in GnomAd4 at 3 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ALG11	NM_001004127.3	c.1032T>G	p.Gly344=	synonymous_variant	3/4	ENST00000521508.2
UTP14C	NM_021645.6	c.-662T>G		5_prime_UTR_variant	1/2	ENST00000521776.2
ALG11	NR_036571.3	n.66-3557T>G		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ALG11	ENST00000521508.2	c.1032T>G	p.Gly344=	synonymous_variant	3/4	1	NM_001004127.3	P4
UTP14C	ENST00000521776.2	c.-662T>G		5_prime_UTR_variant	1/2	1	NM_021645.6	P1

Frequencies

GnomAD3 genomes AF: 0.00325 AC: 494 AN: 152084 Hom.: 3 Cov.: 32

Gnomad AFR AF: 0.0107

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00249

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000414

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000294

Gnomad OTH AF: 0.00383

GnomAD3 exomes AF: 0.000835 AC: 210 AN: 251364 Hom.: 1 AF XY: 0.000596 AC XY: 81 AN XY: 135858

Gnomad AFR exome AF: 0.0108

Gnomad AMR exome AF: 0.000781

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.0000327

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000352

Gnomad OTH exome AF: 0.000489

GnomAD4 exome AF: 0.000306 AC: 447 AN: 1461866 Hom.: 5 Cov.: 31 AF XY: 0.000287 AC XY: 209 AN XY: 727234

Gnomad4 AFR exome AF: 0.00995

Gnomad4 AMR exome AF: 0.000872

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000927

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000899

Gnomad4 OTH exome AF: 0.000894

GnomAD4 genome AF: 0.00324 AC: 493 AN: 152202 Hom.: 3 Cov.: 32 AF XY: 0.00317 AC XY: 236 AN XY: 74420

Gnomad4 AFR AF: 0.0107

Gnomad4 AMR AF: 0.00249

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.000207

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000294

Gnomad4 OTH AF: 0.00379

Alfa AF: 0.00147 Hom.: 1

Bravo AF: 0.00363

Asia WGS AF: 0.000289 AC: 1 AN: 3478

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:3

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not specified Benign:1

Likely benign, criteria provided, single submitter

clinical testing

GeneDx

Mar 05, 2018

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

not provided Benign:1

Likely benign, criteria provided, single submitter

not provided

Breakthrough Genomics, Breakthrough Genomics

-

- -

ALG11-congenital disorder of glycosylation Benign:1

Benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 18, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.86
CADD	Benign	1.4
DANN	Benign	0.68

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: rs143967675; hg19: chr13-52598898;