rs552094345

Variant names:

• chr16-5071858-C-G
• rs552094345
• NM_019109.5:c.9C>G

Your query was ambiguous. Multiple possible variants found:

• chr16-5071858-C-G
• chr16-5071858-C-T

Variant summary

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

The NM_019109.5(ALG1):​c.9C>G​(p.Ala3Ala) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000689 in 1,452,400 control chromosomes in the GnomAD database, with no homozygous occurrence. 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. A3A) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: ALG1 NM_019109.5 synonymous
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -2.09
• Publications: 0 publications found

Genes affected

ALG1 (HGNC:18294): (ALG1 chitobiosyldiphosphodolichol beta-mannosyltransferase) The enzyme encoded by this gene catalyzes the first mannosylation step in the biosynthesis of lipid-linked oligosaccharides. This gene is mutated in congenital disorder of glycosylation type Ik. [provided by RefSeq, Dec 2008]

ALG1 Gene-Disease associations (from GenCC):

• ALG1-congenital disorder of glycosylation

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

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=-0.72).
• BP6: Variant 16-5071858-C-G is Benign according to our data. Variant chr16-5071858-C-G is described in ClinVar as Likely_benign. ClinVar VariationId is 3692369.Status of the report is criteria_provided_single_submitter, 1 stars.
• BP7: Synonymous conserved (PhyloP=-2.09 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_019109.5. 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
	ALG1	NM_019109.5	MANE Select	c.9C>G	p.Ala3Ala	synonymous	Exon 1 of 13	NP_061982.3
	ALG1	NM_001438123.1		c.9C>G	p.Ala3Ala	synonymous	Exon 1 of 12	NP_001425052.1	A0A804HJL6

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ALG1	ENST00000262374.10	TSL:1 MANE Select	c.9C>G	p.Ala3Ala	synonymous	Exon 1 of 13	ENSP00000262374.5	Q9BT22-1
	ALG1	ENST00000588623.5	TSL:1	c.-125-1093C>G		intron	N/A	ENSP00000468118.1	Q9BT22-2
	ALG1	ENST00000591822.5	TSL:1	n.9C>G		non_coding_transcript_exon	Exon 1 of 13	ENSP00000467865.1	K7EQK1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 6.89e-7 AC: 1 AN: 1452400 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 722704

African (AFR) AF: 0.00 AC: 0 AN: 33414

American (AMR) AF: 0.00 AC: 0 AN: 44444

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26036

East Asian (EAS) AF: 0.00 AC: 0 AN: 39534

South Asian (SAS) AF: 0.00 AC: 0 AN: 85770

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 46922

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5320

European-Non Finnish (NFE) AF: 9.00e-7 AC: 1 AN: 1110850

Other (OTH) AF: 0.00 AC: 0 AN: 60110

GnomAD4 genome Cov.: 33

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ClinVar

ClinVar submissions

Significance: Likely benign

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	-	1	ALG1-congenital disorder of glycosylation (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.72
CADD	Benign	0.81
DANN	Benign	0.65
PhyloP100		-2.1
PromoterAI		0.13	Neutral
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.6

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: rs552094345; hg19: chr16-5121859;