Andrea Ganna
banner
andganna.bsky.social
Andrea Ganna
@andganna.bsky.social
Associate Prof in health data science @HiLIFE_helsinki @FIMM_UH - MGH/Harvard - Playing with all kind of data - http://dsgelab.org
Removing genetic effects from plasma proteins is an effective strategy to increase power for biomarker discovery and clinical trial design, consistent with the largely non-causal role of most plasma proteins in disease risk.

👏 Lead by Daniela Fusco and Zhiyu Yang
October 16, 2025 at 9:16 PM
✅ 88% of 1,300+ protein–disease pairs showed stronger associations after genetic adjustment
✅ Equivalent to needing 30% fewer samples for the same power
✅ Multi-protein scores improved prediction for 7 major diseases
✅ Adjusted proteins aligned more closely with exposome
October 16, 2025 at 9:16 PM
Plasma proteins reflect both genes and environment.

But when genetic variation unrelated to disease drives protein levels, it can dilute biomarker signals.

We genetically-adjust 94 highly heritable proteins in ~40K UK Biobank individuals to see if removing genetic effects helps
October 16, 2025 at 9:16 PM
Link to the pre-print: www.medrxiv.org/content/10.1...
www.medrxiv.org
October 8, 2025 at 8:01 PM
A fantastic collaboration with
@finngen.bsky.social &
Finnish Clinical Biobank Tampere, led by Rodos Rodosthenous & Leena Viiri.

I personally learned a lot about running an RCT: we need to make them simpler!

@fimm-uh.bsky.social
@hilife-helsinki.bsky.social
October 8, 2025 at 8:01 PM
Takeaway:

While genetics strongly predict body weight at baseline, they do not determine who benefits from dietary coaching. In other words, behavioral interventions can overcome genetic risk in non-diabetic overweight and mildly obese adults.
October 8, 2025 at 8:01 PM
📊 Results:

✅ Excellent retention: 90% participants returned at 6 months (in both trial arms)
✅ Diet worked: intervention group lost ~5% body weight vs controls
❌ But… the effectiveness of the intervention did not differ between those with high vs. low genetic risk for higher BMI.
October 8, 2025 at 8:01 PM
🧠 What makes GENEROOS unique?

👉 It’s the first prospective RCT to directly test this hypotesis (others did so retrospectively) and the first to recruit participants from the extreme tails (top & bottom 5%) of the BMI polygenic score.

223 non-diabetic adults (BMI 23–36 kg/m²) took part.
October 8, 2025 at 8:01 PM
Thanks to the many biobanks involved!
And particularly Zhiyu Yang for leading this!
September 30, 2025 at 12:50 PM
Why it matters? progression genetics is more relevant drug targets + clinical care.

👉 Solutions:
• Build larger, harmonized cohorts & refined progression phenotypes
• Use proxy phenotypes from general population

Read: www.nature.com/articles/s41...
Limited overlap between genetic effects on disease susceptibility and disease survival - Nature Genetics
Systematic comparison of genome-wide association results for disease risk and disease-specific mortality for nine common diseases across seven biobanks finds limited overlap between genetic effects on disease susceptibility and survival.
www.nature.com
September 30, 2025 at 12:50 PM
comparing to one clinical prediction model is one way to think about this. the other is about the re-use of generated trajectories for multiple purposes in just one go: readmission rate, mortality, healthcare costs, disease risk and so on…
September 17, 2025 at 8:57 PM
Thanks Michel! let’s chat. we want to have this pan-european.
September 17, 2025 at 8:54 PM