rs1803274 a variant in the BCHE gene

What is this?

Your DNA is a long sequence of four letters. At a few million positions, people commonly differ by a single letter; each of those positions is called a SNP (“snip”), and rs1803274 is the catalogue number of one of them, in the BCHE gene. Which letters you carry there — one copy from each parent — is your genotype.

BCHE (butyrylcholinesterase): This gene encodes a cholinesterase enzyme and member of the type-B carboxylesterase/lipase family of proteins. The encoded enzyme exhibits broad substrate specificity and is involved in the detoxification of poisons including organophosphate nerve agents and pesticides, and the metabolism of drugs including cocaine, heroin and aspirin.

Gene description from NCBI Gene

The rs1803274(A) allele encodes a version of the butyrylcholinesterase enzyme known as the K variant...

From SNPedia

Why might it matter?

ClinVar records this variant as conflicting interpretations, meaning laboratories that have assessed it do not agree on whether it matters. A classification describes the variant, not you: what it means for one person depends on their genotype, their family history and often on other genes and circumstances.

Conditions it has been reported with

• Butyrylcholinesterase activity
• Deficiency of butyrylcholinesterase

Listed in ClinVar submissions for this variant. Being listed is a report of an association, not a statement that the variant causes the condition in any given person.

Do I have this variant?

Connect this with your blood results

A gene is a fixed instruction; a blood test shows what your body is doing now. CheckMyBloods reads the two side by side, so a variant can be set against the markers it could plausibly affect.

Blood markers do not diagnose a genetic condition, and a variant does not explain a blood result on its own. Together, with symptoms and family history, they give a clinician context.

What should I do next?

1. Find out whether you carry it. Reading about a variant says nothing about you until you know your genotype.
2. Put it in context. Add your blood results, so the variant can be read against what your body is doing.
3. Ask questions. Dr. Hemsworth, our AI assistant, can explain this variant and your results in plain English.
4. Take anything that worries you to a professional. A GP or genetic counsellor can order a confirmatory test and interpret it with your history.

This page is general information drawn from public research databases. It cannot diagnose anything, and it is not a substitute for advice from a doctor or genetic counsellor who knows your history.

Technical details

dbSNP ID

rs1803274

Gene

BCHE

Position

chr3:165773492

ClinVar classification

Conflicting classifications of pathogenicity

Genome-wide association studies (14)

Sources

• dbSNP: rs1803274 — the reference record
• ClinVar — clinical interpretations submitted by laboratories
• SNPedia — community-written summaries
• NCBI Gene: BCHE
• Ensembl: BCHE
• GWAS Catalog — association studies

Related

Other variants in BCHE

• rs751910853
• rs1799807
• rs398124632
• rs527843566
• rs28933389
• rs28933390
• rs121918557
• rs121918558
• rs104893684
• rs115129687

• The BCHE gene
• SNP explorer
• Gene directory
• Health conditions