A Single Shot Could Replace Your Daily Cholesterol Pills: Here's What Scientists Just Discovered

A revolutionary gene-editing treatment could replace daily cholesterol medications with a single injection that cuts cholesterol levels by nearly half. Two groundbreaking studies show that experimental therapies using CRISPR gene-editing and DNA-based treatments can dramatically reduce cholesterol without the side effects of traditional statins.

How Does This One-Shot Treatment Work?

The CRISPR approach works by disabling a specific gene in the liver called ANGPTL3, which is involved in producing cholesterol and triglycerides. Doctors infuse the drug into patients' bloodstreams, where it travels to the liver and permanently "knocks out" the gene. "It's a knockout of the gene. It cuts it. And after that, the gene no longer functions," said Dr. Steven Nissen, a preventive cardiologist at the Cleveland Clinic involved in the research.

A separate study from the University of Barcelona developed a different DNA-based therapy targeting the PCSK9 gene using molecules called polypurine hairpins. This approach increased cholesterol uptake by cells and reduced artery-clogging lipid levels by binding to specific DNA sequences.

What Were the Results?

The CRISPR study involving 15 volunteers found that one infusion safely reduced both cholesterol and harmful triglycerides by about 50%. The treatment appeared to work without significant side effects. The DNA-based therapy showed even more dramatic results in animal studies, with one injection reducing plasma PCSK9 levels by 50% and cholesterol levels by 47% within three days.

Meanwhile, researchers at Clemson University are taking a different approach by studying how the body's immune system can naturally remove cholesterol from tissues. Their work focuses on enhancing two proteins, ABCA1 and ABCG1, that help immune cells called macrophages eliminate cholesterol buildup in artery walls.

What Are the Key Advantages?

These new treatments offer several potential benefits over traditional cholesterol medications:

• Single Treatment: Rather than taking daily pills for years, patients could receive one injection that lasts potentially for life
• Fewer Side Effects: The treatments avoid the muscle pain and other side effects commonly associated with statin drugs
• Better Compliance: Eliminates the problem of patients stopping their medications, which affects millions of people currently taking cholesterol drugs
• Direct Action: Some approaches target cholesterol buildup directly in artery walls rather than just reducing cholesterol production

"Rather than a lifetime worth of medicine, we have the potential to give people a cure," said Dr. Luke Laffin, a preventative cardiologist at the Cleveland Clinic who helped conduct the CRISPR study. The approach could be particularly valuable given that heart disease kills nearly 700,000 people yearly in the United States, partly because many patients stop taking their medications.

What's Next for These Treatments?

While the results are promising, researchers emphasize that much more testing is needed before these treatments become widely available. The studies were small and short-term, and scientists need to confirm long-term safety and effectiveness. "The idea of an inexpensive, one-and-done treatment, so you don't have to take any of those drugs, right now that's an idea — a fantasy — because gene-editing is expensive, long-term safety is unclear," cautioned Dr. Eric Topol, a cardiologist at Scripps Research who wasn't involved in the studies.

Researchers are planning larger, longer studies to determine whether these one-time treatments can safely protect people against heart attacks and strokes for a lifetime. The safety bar will be particularly high since these treatments would be used on otherwise healthy people with high cholesterol, rather than patients already suffering from serious illnesses.

"Our goal is to find better ways to remove cholesterol directly from the cells where it builds up," explained Alexis "Stocko" Stamatikos, lead researcher at Clemson University studying the immune system approach. This represents a potential shift from simply reducing cholesterol production to enhancing the body's natural ability to clean up existing cholesterol deposits in arteries.