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Genome

Read every variant: health risk, pharmacogenomics, polygenic scores, phenotype prediction, and more.

What is a polygenic risk score?

A weighted sum of thousands of common variants that summarises inherited disposition for a complex trait. We explain how it is built, what the number means, and where it falls short.

7 min read · updated Apr 19, 2026
Reading your APOE genotype

APOE has three common alleles (ε2, ε3, ε4) and the ε4 allele is the strongest known common-variant risk factor for late-onset Alzheimer's. Here is what your genotype means and why we resolve it in four tiers.

5 min read · updated Apr 19, 2026
Pharmacogenomics: when your genes change how you respond to a drug

Star alleles, metabolizer status, and the ten FDA Black Box drug-gene alerts Haeckel surfaces. Concrete examples from CYP2D6 codeine and DPYD fluorouracil.

6 min read · updated Apr 19, 2026
Predicting eye, hair, skin colour, and height

How HIrisPlex-S predicts pigmentation from a small SNP panel, why height prediction works better in some ancestries than others, and what to make of disagreements with the mirror.

5 min read · updated Apr 19, 2026
A walkthrough of the Genome page

The Genome surface holds seventeen analytical modules. This article explains what sits in each tab, what number to look at first, and which numbers are safe to ignore.

4 min read · updated Apr 23, 2026
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Statistical modeling only. Non-clinical.