Hypofractionated Versus Conventional Fractionation Radiotherapy

2019-07-15 10:05:26 | BioPortfolio


This study was designed to evaluate the acute toxicity and quality of life of hypofractionated radiation versus conventional when regional node irradiation is indicated after breast-conserving surgery or mastectomy.


Investigators hypothesize that hypofractionated radiotherapy is equal effective and safe as conventional radiotherapy in breast cancer patients undergoing regional nodal irradiation.

Eligible breast cancer patients are randomized 1:1 into the following two groups:

1. Hypofractionated therapy: 40 Gy in 15 fractions of 2.67 Gy in breast or chest wall and nodal drainage with Concurrent boost 48.0 Gy / 3.2 Gy daily in tumor bed, in case of conservative surgery;

2. Standard fractionation: 50 Gy in 25 fractions in breast or chest wall and nodal drainage with sequential tumor bed boost with 10 Gy in 5 fractions in tumor bed in case of conservative surgery.

Patients will be followed for 6 months after radiotherapy to evaluate acute toxicity and quality of life.

Study Design


Breast Cancer


Conventional radiotherapy, Hypofractionated radiotherapy


Not yet recruiting


Hospital da Baleia

Results (where available)

View Results


Published on BioPortfolio: 2019-07-15T10:05:26-0400

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Medical and Biotech [MESH] Definitions

Radiotherapy given to augment some other form of treatment such as surgery or chemotherapy. Adjuvant radiotherapy is commonly used in the therapy of cancer and can be administered before or after the primary treatment.

The total amount of radiation absorbed by tissues as a result of radiotherapy.

Radiotherapy where there is improved dose homogeneity within the tumor and reduced dosage to uninvolved structures. The precise shaping of dose distribution is achieved via the use of computer-controlled multileaf collimators.

Radiotherapy where cytotoxic radionuclides are linked to antibodies in order to deliver toxins directly to tumor targets. Therapy with targeted radiation rather than antibody-targeted toxins (IMMUNOTOXINS) has the advantage that adjacent tumor cells, which lack the appropriate antigenic determinants, can be destroyed by radiation cross-fire. Radioimmunotherapy is sometimes called targeted radiotherapy, but this latter term can also refer to radionuclides linked to non-immune molecules (see RADIOTHERAPY).

Computer-assisted mathematical calculations of beam angles, intensities of radiation, and duration of irradiation in radiotherapy.

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