
Episode 394: 402. Cardiovascular Risk Factors, Zilebesiran, Shared Decision Making
7/18/2025
0:00
15:05
Key Findings:
- Classic Risk Factors: The five risk factors examined were hypertension, hyperlipidemia, underweight and overweight or obesity, diabetes, and smoking. These factors are estimated to account for about 50% of the global burden of cardiovascular disease.
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Lifetime Risk Estimates:
- Among individuals free of these risk factors at age 50, the lifetime risk of cardiovascular disease was 13% for women and 21% for men.
- For those with all five risk factors, the lifetime risk jumped to 24% for women and 38% for men.
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Significance of Risk Factor Modification:
- Adjusting certain risk factors during midlife, particularly managing hypertension and quitting smoking, led to the most significant gains in life expectancy free of disease.
- For instance, controlling hypertension between ages 55 and 60 yielded the most additional life-years free of cardiovascular disease.
- Quitting smoking during the same period was associated with the most additional life-years free of death from any cause.
https://jamanetwork.com/journals/jama/fullarticle/2834632
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Study Design:
- This was a phase 2, randomized, double-blinded trial with participants enrolled from 150 sites across 8 countries. The study spanned from January 2022 to June 2023, with analyses completed by March 2024.
- Participants received indapamide, amlodipine, or olmesartan as background therapy. Those with a specified range of 24-hour mean ambulatory systolic blood pressure (SBP) were then randomized to receive either a single subcutaneous dose of 600 mg zilebesiran or placebo.
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Efficacy Results:
- At 3 months, zilebesiran significantly reduced the 24-hour mean ambulatory SBP compared to placebo across all cohorts:
- Indapamide: -12.1 mmHg
- Amlodipine: -9.7 mmHg
- Olmesartan: -4.5 mmHg
- Similar reductions were observed in office SBP measurements at 3 months.
- At 3 months, zilebesiran significantly reduced the 24-hour mean ambulatory SBP compared to placebo across all cohorts:
https://pubmed.ncbi.nlm.nih.gov/40578930/
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Primary Outcomes:
- Discontinuation of Opioid Therapy: Patients in the greater SDM group were less likely to discontinue opioid therapy 3 months post-baseline compared to those in the lesser SDM group (Relative Risk: RR of 0.56).
- Opioid Prescribing Frequency: Over a 12-month period, patients in the greater SDM group experienced more frequent opioid prescriptions (RR of 1.24).
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Secondary Outcomes:
- Physical Function: Interestingly, physical function was slightly worse in the greater SDM group, but this difference was not deemed clinically significant.
- Back-related Disability: Both greater opioid use and SDM were associated with increased back-related disability and worse physical function, yet these findings were also not clinically significant.
- No significant SDM x opioid therapy interaction effects were observed, indicating that more frequent opioid use coupled with SDM did not lead to better patient outcomes in pain, function, or health-related quality of life (HRQOL).
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