Shockwave Medical, Inc. (NASDAQ: SWAV), a pioneer in the development of Intravascular Lithotripsy (IVL) to treat severely calcified cardiovascular disease, announced today new data confirming excellent one-year outcomes with coronary IVL in both women and men. The one-year results from the Disrupt CAD clinical program were presented at the 2022 Scientific Sessions of the Society for Cardiovascular Angiography & Interventions (SCAI).
Unlike previous reports with atherectomy that have shown worse angiographic complications in women versus men,i a pooled analysis of the Disrupt CAD III & IV studies showed that IVL was equally safe and effective in men (n=342) and women (n=106). Despite the smaller vessel size in women (2.8mm vs 3.1mm, p=<0.001), the primary effectiveness endpoint of procedural success for women and men was similar (90.6 percent vs 93.0 percent, p=0.47). The primary safety endpoint of 30-day MACE for women and men was also similar (9.4 percent vs 7.0 percent, p=0.55). Notably, there were also consistently low rates of post-IVL serious angiographic complications in women and men (2.2 percent vs 2.6 percent, p=0.85), which differs from similar analyses in an atherectomy population.
At one year, women and men had similar rates of MACE (12.7 percent vs 13.3 percent, p=0.83) and target lesion failure (10.4 percent vs 11.2 percent, p=0.85), respectively. The components of target lesion revascularization (TLF) were low in both women and men and numerically favored females, including target vessel-myocardial infarction (8.5 percent vs 9.7 percent), target lesion revascularization (2.9 percent vs 4.2 percent) and stent thrombosis (0 percent vs 1.2 percent).
“Given the established safety profile of IVL and the high rates of acute and long-term adverse events in women undergoing PCI, with or without atheroablation of calcified lesions, coronary IVL is an attractive treatment option for optimizing outcomes in our female patients,” said Alexandra Lansky, MD, FACC, FAHA, FSCAI, FESC, Professor of Medicine (Cardiology); Director of Yale Cardiovascular Clinical Research Program, Yale University School of Medicine, New Haven, Conn. “While this is the first one-year analysis of its kind for coronary IVL, the sustained benefit in MACE at one year suggests that IVL should be considered first-line therapy for plaque modification in women with calcified lesions.”
The presentation follows the recent publication of SCAI’s “Expert Consensus Statement on Sex-Specific Consideration in Myocardial Revascularization” in JSCAI, which referenced the role of IVL in female patients. The SCAI statement concluded, “while additional evidence is needed, these results taken in the context of outcomes with atherectomy devices suggest that IVL may emerge as a first-line therapy for plaque modification of calcified lesions in women specifically.”
“As someone who is dedicating her career to addressing the needs of the most complex patients, I find these results very encouraging,” said Katherine Kunkel, MD, MSEd, FSCAI, an interventional cardiologist at Piedmont Heart Institute in Atlanta, Ga., one of the sites that participated in Disrupt CAD III. “Thanks to an increasing focus on the challenges of female patients, which often include atypical symptoms, later presentation with smaller and more tortuous vessels, and possibly an unconscious bias that may be associated with under-treatment, I am confident that we are heading in the right direction to improve outcomes in female patients. Additionally, tools like IVL are helping level the playing field for safely and effectively treating all types of patients with calcified disease.”