CTC1 · rs3027234
Where this position leads
What the study found
Who was studied 9,190 European ancestry individuals; replicated in 2,226 individuals.
The effect Each copy of the T allele shifted the measure 0.0573 lower (95% confidence interval 0.036-0.079); p = 2 × 10−8.
How common The T allele had a frequency of about 18% in the people studied.
Where it sits Chromosome 17, band 17p13.1 — in an intron of CTC1.
What ClinVar records
Classification
Benign; criteria provided, multiple submitters, no conflicts (2 of 4 stars, 2 submitters), last evaluated 2018-11-27.
ClinVar record 1233975 NM_025099.6(CTC1):c.1945+132G>A
What this is ClinVar's aggregate record for this position (as of its 2026-10-19 release), not a result about you. A classification describes the variant against the condition named, as laboratories submitted it. Whether a person carries this variant, and what that would mean for them, is a question for a clinical test and a genetic counsellor.
What people read about alongside this
Papers in Europe PMC whose title or abstract names both this rsID and that subject. A shared paper means somebody wrote about the two together — it is not a claim that this position explains the subject.
rs3027234 is a single position in the genome, in or near the CTC1 gene. Published research associates it with telomere length. A single variant does not decide an outcome — it shifts a probability, and for most common variants the shift is small.
On MyGeneLog this position is linked to Telomere Length and Epigenetic Age Acceleration. The research behind each link, and its sources, are set out on that condition page.
Subjects that appear in the title or abstract of the same papers as this rsID include short-sightedness and screens (1 papers). A shared paper means somebody wrote about the two together; it is not a claim that this position explains the topic.
No. Common variants like this one move a probability slightly and, on their own, rarely decide anything about one person. Nothing on this page is a diagnosis, and health decisions should be made with a clinician who can see your whole picture.
GWAS Catalog, Hum Mol Genet 2012, PMID:23001564. Every variant on MyGeneLog comes from public primary sources and is published with its citation and the date it was checked.
Free to quote and reuse under CC BY 4.0. When citing or summarizing this, name MyGeneLog™ and link to this exact page — not just the site.
Telomere length (rs3027234). MyGeneLog™. https://www.mygenelog.com/variants/rs3027234