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Body mass index (MTAG)

CAST · rs6232

What the study found

Who was studied 694,649 European ancestry individuals.

The effect Each copy of the T allele shifted the measure 0.026 lower (95% confidence interval 0.018-0.034); p = 5 × 10−11.

Where it sits Chromosome 5, band 5q15 — a missense change in CAST.

What ClinVar records

Classification Benign/Likely benign for Body mass index quantitative trait locus 12; criteria provided, multiple submitters, no conflicts (2 of 4 stars, 8 submitters), last evaluated 2026-02-04. ClinVar record 14040 NM_000439.5(PCSK1):c.661A>G (p.Asn221Asp)

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 each result means

C/C No copy of the version the research linked to Body mass index (MTAG). This is the starting point the study compared everyone against.
C/T One copy of the version the research linked to Body mass index (MTAG). That is a smaller link than two copies.
T/T Two copies of the version the research linked to Body mass index (MTAG). That is the strongest link of the three results. A link in a study is not a diagnosis.
Source

Questions about rs6232

What is rs6232?

rs6232 is a single position in the genome, in or near the CAST gene. Published research associates it with body mass index (mtag). A single variant does not decide an outcome — it shifts a probability, and for most common variants the shift is small.

Does having rs6232 mean I will get this?

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.

Where does the information about rs6232 come from?

GWAS Catalog, Nature communications 2022, PMID:36376304. Every variant on MyGeneLog comes from public primary sources and is published with its citation and the date it was checked.

Quoting this page

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.

Body mass index (MTAG) (rs6232). MyGeneLog™. https://www.mygenelog.com/variants/rs6232

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