High-Precision Radiation Therapy Reduces Life-Threatening Heart Arrhythmias by 80%

Mayo Clinic researchers have demonstrated that proton beam therapy, a highly targeted noninvasive radiation treatment, reduced episodes of ventricular tachycardia by nearly 80% in critically ill patients with few remaining treatment options. The first-in-human early feasibility study represents the first large-scale evidence for using targeted radiation to treat this dangerous, fast heart rhythm disorder that can lead to sudden cardiac death. The findings were presented as late-breaking research at the Heart Rhythm Society conference on April 26 and published in the Heart Rhythm Journal. This breakthrough could offer a new therapeutic approach for patients suffering from life-threatening cardiac arrhythmias who have exhausted conventional treatment options.

Proton beam therapy study results and effectiveness

• ▪The proton beam therapy study for ventricular tachycardia was conducted by Mayo Clinic researchers
• ▪Proton beam therapy is a highly targeted, noninvasive form of radiation therapy
• ▪Proton beam therapy reduced episodes of ventricular tachycardia by nearly 80% in a first-in-human early feasibility study

Treatment approach for ventricular tachycardia patients

• ▪Proton beam therapy could offer a new approach for patients with ventricular tachycardia
• ▪Ventricular tachycardia is a dangerous, fast heart rhythm disorder that can lead to sudden cardiac death

Research presentation and publication details

• ▪The Mayo Clinic proton beam therapy study findings were presented as late-breaking research at the Heart Rhythm Society conference on April 26
• ▪The Mayo Clinic proton beam therapy study findings were published in the Heart Rhythm Journal

Perspective of Mayo Clinic researchers

• ▪The Mayo Clinic study provides first-in-human evidence for using proton beam therapy to treat ventricular tachycardia
• ▪Proton beam therapy represents the first large-scale evidence for treating cardiac arrhythmias with targeted radiation

Perspective of Patients with treatment-resistant ventricular tachycardia

• ▪Proton beam therapy offers a noninvasive treatment alternative for patients facing sudden cardiac death from ventricular tachycardia
• ▪Patients with ventricular tachycardia who participated in the Mayo Clinic study had few remaining treatment options before proton beam therapy