Genetic variant

rs2018334830 a variant in the CSNK2A1 gene

rs2018334830 is a single-letter difference in the CSNK2A1 gene, on chromosome 20. ClinVar, the public archive of variant interpretations, lists it as likely pathogenic: probably able to cause or contribute to disease. It has been reported in connection with Okur-Chung neurodevelopmental syndrome. Carrying it does not, on its own, mean you have or will develop any condition.

ClinVar: Likely pathogenic
Health Risk
Chromosome 20

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 rs2018334830 is the catalogue number of one of them, in the CSNK2A1 gene. Which letters you carry there — one copy from each parent — is your genotype.

CSNK2A1 (casein kinase 2 alpha 1): Casein kinase II is a serine/threonine protein kinase that phosphorylates acidic proteins such as casein. It is involved in various cellular processes, including cell cycle control, apoptosis, and circadian rhythm. The kinase exists as a tetramer and is composed of an alpha, an alpha-prime, and two beta subunits. The alpha subunits contain the catalytic activity while the beta subunits undergo autophosphorylation.
Gene description from NCBI Gene

Why might it matter?

ClinVar records this variant as likely pathogenic, meaning probably able to cause or contribute to disease. 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

Okur-Chung neurodevelopmental syndrome

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?

If you have taken a consumer DNA test (23andMe, AncestryDNA and similar), you can download its raw data file and check. Create a free account, upload the file, and this page will show the letters you carry at rs2018334830, if your test read this position.

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.

Upload blood results

What should I do next?

Find out whether you carry it. Reading about a variant says nothing about you until you know your genotype.
Put it in context. Add your blood results, so the variant can be read against what your body is doing.
Ask questions. Dr. Hemsworth, our AI assistant, can explain this variant and your results in plain English.
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: rs2018334830
Gene: CSNK2A1
Position: chr20:495750
ClinVar classification: Pathogenic/Likely pathogenic

Sources

dbSNP: rs2018334830 — the reference record
ClinVar — clinical interpretations submitted by laboratories
SNPedia — community-written summaries
NCBI Gene: CSNK2A1
Ensembl: CSNK2A1