Abstract
Abstract Circulating tumour DNA (ctDNA) refers to small fragments of tumour DNA found in the blood circulation. These DNA fragments can be isolated and quantified to obtain data about a cancer’s size and progression. The possibility of utilizing a simple blood sample to allow early detection and monitoring of cancer growth is a highly desirable application for this ground breaking technology. Significant health inequalities exist for Pacific peoples with cancer living in New Zealand and in the Pacific region, where the burden of cancer remains a public health concern. The application of this simple ctDNA method of detecting and monitoring cancer to enhance the precision of early cancer diagnostics and surveillance to improve cancer health outcomes for Pacific peoples in Tonga was investigated. Consultation was sought with senior Government officials, Medical, Nursing, Health and Community research staff concerning the development and implementation of ctDNA as a diagnostic tool within the health care setting throughout Tonga. Preliminary assessment of the on-the-ground laboratory requirements needed for the implementation of the ctDNA technology was also undertaken. Strong support for the development of ctDNA as an early diagnostic tool within the clinical setting was expressed. A key feature of the ctDNA technology within this resource constrained environment was the anticipated detection of cancers at an earlier stage with a greater chance of being treatable given that most cancer presentations in Tonga are late. This work sought to explore and progress the implementation of ctDNA as an early cancer diagnostic tool within the Pacific setting, and remains a highly feasible early cancer detection tool within Tonga.
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