• Turnaround time:
    10–21 calendar days (14 days on average)
  • Preferred specimen:
    3mL whole blood in a purple-top tube
  • Alternate specimens:
    DNA or saliva/assisted saliva
  • Sample requirements
  • Request a sample kit



CDGIi; CMS14; CMSTA3; FLJ14511; NET38; hALPG2

Associated disorders

The ALG2 gene is associated with autosomal recessive congenital myasthenic syndrome 14 (CMS14) (MedGen UID: 831266). Additionally, the ALG2 gene has preliminary evidence supporting a correlation with autosomal recessive ALG2-congenital disorder of glycosylation (CDG-Ii).

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Invitae tests that include this gene:

The percentage of clinical cases of congenital myasthenic syndrome and of congenital disorders of glycosylation attributed to pathogenic variants in ALG2 is unknown.

ALG2 is an alpha-1,3-mannosyltransferase that catalyzes the second and third mannosylation steps in the N-linked glycosylation pathway (PMID: 12684507).

Assay and technical information

Invitae is a College of American Pathologists (CAP)-accredited and Clinical Laboratory Improvement Amendments (CLIA)-certified clinical diagnostic laboratory performing full-gene sequencing and deletion/duplication analysis using next-generation sequencing technology (NGS).

Our sequence analysis covers clinically important regions of each gene, including coding exons, +/- 10 base pairs of adjacent intronic sequence in the transcript listed below. In addition, analysis covers the select non-coding variants specifically defined in the table below. Any variants that fall outside these regions are not analyzed. Any specific limitations in the analysis of these genes are also listed in the table below.

Our analysis detects most intragenic deletions and duplications at single exon resolution. However, in rare situations, single-exon copy number events may not be analyzed due to inherent sequence properties or isolated reduction in data quality. If you are requesting the detection of a specific single-exon copy number variation, please contact Client Services before placing your order.

Gene Transcript reference Sequencing analysis Deletion/Duplication analysis
ALG2 NM_033087.3