NANS Chromosome 9

N-acetylneuraminate synthase
18 variants 18 Health Risk

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What This Gene Does
This gene encodes an enzyme that functions in the biosynthetic pathways of sialic acids. In vitro, the encoded protein uses N-acetylmannosamine 6-phosphate and mannose 6-phosphate as substrates to generate phosphorylated forms of N-acetylneuraminic acid (Neu5Ac) and 2-keto-3-deoxy-D-glycero-D-galacto-nononic acid (KDN), respectively; however, it exhibits much higher activity toward the Neu5Ac phosphate product. In insect cells, expression of this gene results in Neu5Ac and KDN production. This gene is related to the E. coli sialic acid synthase gene neuB, and it can partially restore sialic acid synthase activity in an E. coli neuB-negative mutant. [provided by RefSeq, Jul 2008]
Associated Conditions (3)
Inborn genetic diseases
Spondyloepimetaphyseal dysplasia
Genevieve type
Key Variants
All Variants (18)
RSID Category Clinical Significance Conditions
RS140402727 Health Risk Conflicting classifications of pathogenicity Inborn genetic diseases, Inborn genetic diseases
RS145067627 Health Risk Conflicting classifications of pathogenicity Inborn genetic diseases, Inborn genetic diseases
RS764577626 Health Risk Conflicting classifications of pathogenicity Spondyloepimetaphyseal dysplasia, Genevieve type, Spondyloepimetaphyseal dysplasia
RS2117967310 Health Risk Likely pathogenic Spondyloepimetaphyseal dysplasia, Genevieve type, Spondyloepimetaphyseal dysplasia
RS2131619700 Health Risk Likely pathogenic Spondyloepimetaphyseal dysplasia, Genevieve type, Spondyloepimetaphyseal dysplasia
RS2490390946 Health Risk Likely pathogenic
RS369033671 Health Risk Likely pathogenic Spondyloepimetaphyseal dysplasia, Genevieve type, Spondyloepimetaphyseal dysplasia
RS375797722 Health Risk Likely pathogenic
RS745594354 Health Risk Likely pathogenic Spondyloepimetaphyseal dysplasia, Genevieve type, Spondyloepimetaphyseal dysplasia
RS879255602 Health Risk Likely pathogenic Spondyloepimetaphyseal dysplasia, Genevieve type, Spondyloepimetaphyseal dysplasia
RS922323466 Health Risk Likely pathogenic Spondyloepimetaphyseal dysplasia, Genevieve type, Spondyloepimetaphyseal dysplasia
RS1459077847 Health Risk Pathogenic
RS1828949796 Health Risk Pathogenic Spondyloepimetaphyseal dysplasia, Genevieve type, Spondyloepimetaphyseal dysplasia
RS200709126 Health Risk Pathogenic Spondyloepimetaphyseal dysplasia, Genevieve type, Spondyloepimetaphyseal dysplasia
RS878852980 Health Risk Pathogenic Spondyloepimetaphyseal dysplasia, Genevieve type, Spondyloepimetaphyseal dysplasia
RS878852981 Health Risk Pathogenic Spondyloepimetaphyseal dysplasia, Genevieve type, Spondyloepimetaphyseal dysplasia
RS878853267 Health Risk Pathogenic Spondyloepimetaphyseal dysplasia, Genevieve type, Spondyloepimetaphyseal dysplasia
RS779218846 Health Risk Pathogenic/Likely pathogenic Spondyloepimetaphyseal dysplasia, Genevieve type, Spondyloepimetaphyseal dysplasia
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