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Genetics Library / Genes / NSUN2

GENE REFERENCE / HGNC:25994

NSUN2

NOP2/Sun RNA methyltransferase 2

protein-coding gene5p15.31Basic gene details

What does this gene do?

The MedlinePlus data used here does not include an explanation of what this gene does. Its name and other identifying details come from HGNC.

Related condition topics

We found no linked condition pages in the MedlinePlus data used here. The gene may still be involved in a condition.

ClinGen reviews

ClinGen reviews the evidence linking a particular gene to a condition. Each rating below describes the strength of that link. It does not classify a variant in your DNA file.

ConditionInheritanceEvidence
RASopathyMONDO:0021060 · Evaluated 2019-02-04Autosomal recessiveDisputedRASopathy Gene Curation Expert Panel
syndromic intellectual disabilityMONDO:0000508 · Evaluated 2023-10-18Autosomal recessiveDefinitiveIntellectual Disability and Autism Gene Curation Expert Panel

ClinVar records

These numbers show what has been submitted to ClinVar. They cannot tell you how likely you are to have a condition.

Submitted alleles
808
Submissions for variants in or overlapping this gene
1,227
Submissions explicitly reporting this gene
1,098
Alleles reported pathogenic / likely pathogenic
61
VariationIDs with uncertain significance
246
VariationIDs with conflicting classifications
27

The rows count different things: alleles, submissions or VariationIDs. Their categories can overlap, so do not add them together. Pathogenic/likely pathogenic counts exclude structural variants that merely overlap a gene. A dash in the source means “not reported,” not zero.

NCBI produces the gene-summary file each week using counts recorded at the start of the month. The numbers may differ from those on the live ClinVar website. Read the field definitions ↗

View this gene in ClinVar ↗

YOUR DNA FILE

Can your DNA file tell you about NSUN2?

From a DNA test kit (such as 23andMe, AncestryDNA or MyHeritage). These kits check a fixed list of about 600,000 to 700,000 positions across your whole genome. ClinVar lists 61 alleles in NSUN2 reported as pathogenic or likely pathogenic. A kit checks only some of these positions, and often none of them.

From whole genome sequencing (a VCF file). Sequencing reads most of your genome. Your file lists the places where your DNA differs from the reference genome. Some regions are hard to sequence, including parts of some genes that have near-identical copies elsewhere, and a VCF file does not record which positions were read well.

If a variant is not in your file, that does not mean you don’t have it.

What BioDecode checks

BioDecode compares every variant in your file with ClinVar, on your own computer. For each match, it shows the ClinVar classification, the review status and the condition it was reported for. Your file is not uploaded.

A ClinVar classification applies to one particular variant and the condition it was reported for. It does not tell you about other variants in NSUN2.

BioDecode cannot fill gaps in your test, diagnose a condition or replace clinical testing.

Sources and dates

The source information on this page last changed on 2026-10-24.

HGNC Source details

Open source record ↗

Source release: Fri, 16 Oct 2026 13:36:12 GMT
Source record updated: 2023-01-20

SHA-256: 72bfe0c05800163c040a2cf663c70501f9ac9236469fbd0b552f2cd37a4d7f67

ClinVar Source details

Open source record ↗

Source release: Mon, 19 Oct 2026 03:41:17 GMT

SHA-256: 9a8c00a7987db98812ad59025733fd9d491e66316267e09a482adcb8cce1d14e

ClinGen Source details

Open source record ↗

Source release: Sat, 24 Oct 2026 08:06:31 GMT

SHA-256: 80a5e6a08b5ae87f6bad38cb2df1564fae7e038c575918f122170235748c85a4

About the library sources · Latest validated release · Record 52a1f1c09355