Electrical pulse ablation technology has been around a while, with multiple studies performed and a large body of patents. The promise and hope for the technology is that is causes cell apoptosis, and early rat studies showed electrical ablation shrinking tumors. The goal was/is to apply it to multiple cancer types. Source: I helped with one of the pioneering companies in the field.

A quick internet search for "electrical ablation cell apoptosis cancer" yields a few research articles. For example https://www.frontiersin.org/articles/10.3389/fonc.2020.01235...