Cancer is an abnormal growth of a cell due to the cell’s inability to control and maintain its proliferation, differentiation and apoptosis cycle. There are several methods to treat cancer; one of which is boron neutron capture therapy (BNCT). BNCT is a radiation modality by which a high radiation dose is delivered to tumor cells with lower damage to surrounding normal tissue. This modality has been used widely as a treatment for several cancer cases, such as head and neck cancer, breast cancer, and liver cancer. BNCT uses sodium borocaptate (BSH) or boronophenylalanine (BPA) as the delivery agent. Then, the tumor cell is irradiated by thermal radiation. This technique has excellent potential to become a main method of cancer therapy in the future, since it is noninvasive and has fewer side effects than other methods. Further studies on BNCT are needed to improve its performance as a cancer treatment modality.

Boron neutron capture therapy (BNCT) is a form of cancer therapy based on the interaction of low-energy thermal neutrons and boron-10 (10-B) to produce alpha radiation from He-4 and Li-7 with a high linear energy transfer. A beam of neutrons irradiates a boron drug injected into the tumor, resulting in the boron-injected cancer cells receiving a lethal dose of radiation with the surrounding, healthy cells being minimally affected. Two boron drugs have been used clinically in BNCT, boron sodium captate (BSH) and borophenylalanine (BPA), while a third, pentagamaboronon-0 (PGB-0), is currently under development in the Faculty of Pharmacy of Universitas Gadjah Mada, Indonesia. In Indonesia, there has been a growing interest in the study and use of BNCT to treat cancer, as this method is expected to be safer and more effective than traditional cancer treatment methods.

Introduction:  Locally advanced breast cancer (LABC) is a large breast tumor with infiltration to surrounding muscle, skin, and lymph nodes, and sometimes followed by inflammatory breast cancer, a rapidly growing cancer that shows a swollen red lump on the skin. Transcatheter intraarterial chemo infusion (TACI) is considered a palliative therapy for inoperable cancer. This case report shows the qualitative results of TACI on LABC in three patients. Case Presentation: Three female patients with LABC were diagnosed and treated at Dr. Sardjito General Hospital Yogyakarta over three years (2014–2016). The age ranged from 48 to 62 years, with a mean age of 56 years. Clinical features include lumps in breasts, soft tissue swelling, ulcers, dimpling of breast skin, nipple discharge, and pain sensation in the breast area. The three patients underwent the TACI procedure. Therapeutic response was evaluated by observing the clinical morphology of the lesions. Conclusions: TACI showed potency as an efficient and effective alternative palliative therapy in the three LABC cases presented. However, further study is needed to inspect TACI’s efficacy and adverse effects in breast cancer cases to be used as evidence-based medicine.