PGM1 · rs855330
Where this position leads
Condition: Type 1 Diabetes
What the study found
Who was studied 18,942 European ancestry cases, 501,638 European ancestry controls.
The effect Each copy of the C allele shifted the measure 0.111 higher (95% confidence interval 0.078-0.144); p = 5 × 10−11.
How common The C allele had a frequency of about 26% in the people studied.
Where it sits Chromosome 1, band 1p31.3 — in an intron of PGM1.
What ClinVar records
Classification
Benign; criteria provided, single submitter (1 of 4 stars, 1 submitter), last evaluated 2018-06-23.
ClinVar record 1272067 NM_002633.3(PGM1):c.1145-299T>C
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.
rs855330 is a single position in the genome, in or near the PGM1 gene. Published research associates it with type 1 diabetes. 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 Type 1 Diabetes. The research behind each link, and its sources, are set out on that condition page.
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, Nature 2021, PMID:34012112. 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.
Type 1 diabetes (rs855330). MyGeneLog™. https://www.mygenelog.com/variants/rs855330