Tumor-Treating Fields: A Fourth Modality in Cancer Treatment

Area of Science:

• Oncology
• Biophysics
• Cancer Therapeutics

Background:

• Cancer remains a leading cause of death, with traditional therapies often causing significant toxicities.
• There is a need for novel, noninvasive, and tolerable cancer treatment modalities.
• Tumor Treating Fields (TTFields) represent a new approach to cancer therapy.

Purpose of the Study:

• To describe Tumor Treating Fields (TTFields) as a noninvasive anticancer treatment.
• To explain the mechanism of action of TTFields in disrupting cancer cell division.
• To review the safety and efficacy of TTFields in clinical trials, particularly for glioblastoma.

Main Methods:

• TTFields utilize alternating electric fields at specific frequencies and intensities.
• The treatment targets proteins essential for cell division (mitosis).
• Clinical trials were conducted to assess TTFields in patients with glioblastoma multiforme (GBM).

Main Results:

• TTFields selectively disrupt mitosis in cancerous cells, leading to mitotic arrest and apoptosis.
• TTFields have demonstrated a favorable safety profile and efficacy in clinical trials for GBM.
• The treatment also appears to stimulate an antitumor immune response.

Conclusions:

• TTFields are an FDA-approved, noninvasive treatment for newly diagnosed and recurrent GBM.
• Ongoing trials are evaluating the efficacy of TTFields in other localized solid tumors.
• TTFields represent a promising therapeutic option with potential to improve cancer treatment outcomes and tolerability.