SINGAPORE - Proton beam therapy, an advanced form of radiation treatment that can target cancer tumours with greater precision and minimise damage to surrounding tissues and organs, should be available in Singapore by the first quarter of 2023.
The Goh Cheng Liang Proton Therapy Centre at the new National Cancer Centre Singapore (NCCS) building in Outram will start operations in the first quarter of 2023. Two other centres in the private sector will also offer proton beam therapy from around the same time.
Mount Elizabeth Novena Hospital plans to offer the therapy from next February. The Singapore Institute of Advanced Medicine Holdings (SAM), a new cancer centre in Biopolis Drive, is awaiting the go-ahead from the authorities to start offering it, possibly by the end of 2022, said its chairman and CEO, Dr Djeng Shih Kien.
While conventional radiotherapy uses X-rays, proton beam therapy uses positively charged subatomic particles that allow for more precise targeting of cancer cells.
This causes less damage to nearby healthy tissues and organs, which means there are fewer treatment-related side effects. The risk of developing secondary cancers due to radiation is also reduced, said Dr Soong Yoke Lim, the deputy chairman and senior consultant at the radiation oncology division at NCCS.
This is why it is recommended for young patients below the age of 25, he said. The therapy is particularly suitable for cancers located in sensitive areas like the brain, or near the eye or spinal cord, for example.
Professor Robert Malyapa, director of SAM’s proton therapy centre, who has experience treating patients with the therapy in the United States, said that unlike X-rays which passes through the tumour and then exits the body, protons deposit a burst of energy at the end of their path, which is known as the Bragg peak. There is no exit dose of radiation as the proton beam stops at the tumour.
“With conventional radiation, for example, it may come from such a direction that the areas that you don’t want to treat gets treated,” said Dr Soong.
He said there is no difference between proton therapy and conventional therapy where cure rates are concerned, because the dose of radiation delivered to the tumour is similar.
Still, it was a no-brainer for Mr Peter Wong to send his then 21-year-old son Samuel for proton therapy in Taiwan in 2019, after he was diagnosed with stage one nasopharyngeal cancer in Singapore. Radioth...