Singapore to trial new ultrasound-based cancer treatment called histotripsy

Key Concepts

• Histotripsy: A non-invasive cancer treatment using ultrasound and microbubbles to destroy tumors.
• Liquefaction: The process of turning tumor tissue into liquid debris for absorption by the body.
• Non-invasive: A medical procedure that does not involve cutting or puncturing the skin.
• Clinical Trial: A research study to evaluate the safety and effectiveness of a new treatment.
• Public-Private Partnership: A collaboration between government entities and private companies to achieve a common goal.
• Immune Response Stimulation: Activating the body's immune system to fight cancer cells.

Histotripsy: A Novel Cancer Treatment

Overview

Histotripsy is a novel cancer treatment that utilizes focused ultrasound and microbubbles to non-invasively destroy tumors. The technology, developed partly at the University of Michigan, aims to provide a pain-free and incision-free alternative to traditional cancer treatments like surgery and radiation.

Mechanism of Action

The process involves focusing ultrasound waves from outside the body onto the tumor. These waves generate microbubbles within the tumor tissue. The expansion and collapse of these bubbles create a mechanical force that liquefies the tumor into debris, which is then absorbed by the body.

Advantages Compared to Existing Treatments

• Non-invasive: No incisions or surgery are required.
• Painless: Patients experience minimal to no pain during the procedure.
• Faster Recovery: Patients can often return home on the same day or the next day after treatment.
• Reduced Side Effects: Histotripsy has shown minimal side effects in clinical trials.

FDA Approval and Clinical Trials

Histotripsy has already received FDA approval for non-invasive treatment of liver tumors. Clinical trials are ongoing in Europe and the United States for the treatment of renal (kidney) and pancreatic tumors.

Real-World Application: Patient Testimonials

The professor shared an anecdote about a young mother with cancer who underwent histotripsy treatment. The patient reported no pain and expressed renewed hope after the tumor was eliminated, allowing her to envision seeing her children grow up.

Cost and Accessibility

Cost Considerations

While the cost of cancer treatment is a complex issue that varies by country, histotripsy aims to reduce long-term healthcare costs. The treatment involves only nine days of treatment and promotes faster recovery, potentially lowering hospital stay and recovery expenses.

Integration with Existing Treatments

The need for additional treatments, such as chemotherapy or radiation, depends on the stage and type of the tumor, as well as the individual patient's needs. Histotripsy can be used as an option alongside other treatments, providing physicians and patients with more choices.

Clinical Trial in Singapore

Collaboration and Funding

A clinical trial for histotripsy is set to begin in Singapore later this year. This trial is made possible through generous donations from the Li Ka Shing Foundation and the Temasek Trust, as well as collaborations with the National Cancer Centre Singapore, the National University Cancer Institute Singapore, and HistoSonics (the company co-founded by the professor). The University of Michigan is also involved.

Importance of Public-Private Partnerships

The development and implementation of histotripsy require significant resources, including specialized equipment, research expertise, and funding. Public-private partnerships are crucial for bringing this innovative technology to patients.

Global Progress and Future Expectations

Ongoing Trials and Success Rates

In addition to the FDA-approved liver tumor treatment, clinical trials are underway in Europe and the United States for renal and pancreatic tumors. Early results show high success rates and minimal side effects.

Immune Response Stimulation

Research suggests that histotripsy can stimulate an immune response in some patients, leading to the reduction of tumors beyond the treated area. This finding opens up new possibilities for using histotripsy to treat metastatic cancer.

Conclusion

Histotripsy represents a promising advancement in cancer treatment, offering a non-invasive, painless, and potentially cost-effective alternative to traditional methods. Ongoing clinical trials and research efforts are paving the way for wider adoption and application of this technology, with the hope of improving outcomes for cancer patients worldwide.