How it works

Boron compound administered to the tumor

Tumor irradiated with neutrons

Neutron capture reaction occurs. Reaction products destroy the tumor cell.

BNCT

BNCT is biochemically targeted radiation therapy. Boron-10 (10B) atoms are selectively delivered to the tumor, followed by irradiation with low energy neutrons.


The stable boron isotope 10B has a large neutron capture radius. Thus, 10B is more likely to capture neutrons than many other elements that are present in biological environments (e.g., nitrogen and hydrogen). A fission reaction occurs upon neutron capture, and a lithium ion and an alpha particle are produced. These particles have high kinetic energies, but their range is only about 10 microns. This leads to very efficient cancer cell killing precisely at the site of boron accumulation. 

NEUTRON CAPTURE REACTION

The stable boron isotope 10B has a large neutron capture radius. Thus 10B is more likely to capture neutrons than many other elements that are present in biological environments (e.g. nitrogen and hydrogen). A fission reaction occurs upon neutron capture, and a lithium ion and an alpha particle are produced. These particles have high kinetic energies, but their range is only about 10 microns. This leads to very efficient cancer cell killing precisely at the site of boron accumulation.

Proven concept

Remarkable efficacy in hard-to-treat patients despite using a suboptimal boron carrier.

Applicability

Suitable for many kinds of solid tumors.

Safety

Less side effects than conventional radiation therapy.

Combinability

Does not exclude other treatments.

Repeatability

No issues with radiation dose accumulation.

Convenience

Short hospital period, outpatient in many cases. Only one or two treatment sessions.

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