Hypofractionated Regional Nodal Irradiation Clinical Trial for Women With Breast Cancer

Summary

Participation Requirements

Description

The HeNRIetta Trial is a phase 2 non-randomized clinical trial to evaluate the safety and effectiveness of hypofractionated RNI for women with resected node-positive breast cancer. The study hypothesis is that a 3-4 week hypofractionated course of post-lumpectomy or postmastectomy EBRT is as safe an...

The HeNRIetta Trial is a phase 2 non-randomized clinical trial to evaluate the safety and effectiveness of hypofractionated RNI for women with resected node-positive breast cancer. The study hypothesis is that a 3-4 week hypofractionated course of post-lumpectomy or postmastectomy EBRT is as safe and effective as the biologically equivalent dose given in conventional fractionation over 5-7 weeks. Eligible patients are women ? 40 years old who have undergone definitive surgery for node-positive breast cancer. Surgery may have been lumpectomy, mastectomy without reconstruction, or mastectomy with reconstruction. Nodal staging may have been performed by only sentinel lymph node (SLN) or by axillary lymph node (ALN) dissection. Patients may have received neoadjuvant or adjuvant chemotherapy at the discretion of the treating medical oncologist. Breast and RNI will be administered to 42.56 Gy in 16 fractions. (RNI will exclude the axilla in patients who have had an ALN dissection.) A treatment boost of 4 to 6 fractions of 2.66 Gy/fraction to the lumpectomy cavity will be included for all patients who have had lumpectomy; a chestwall boost (4 to 6 fractions of 2.66 Gy/fraction) will be administered to patients who had mastectomy (with or without reconstruction) and close (< 2 mm) surgical margins. Total number of EBRT fractions will be 20 to 22 with a boost; 16 without a boost. Bilateral measurements of arm circumference will be used to assess lymphedema by comparing the ipsilateral arm to the contralateral arm. Patients will also be assessed for and will complete questionnaires related to lymphedema, decreased arm function, breast and chestwall pain, other EBRT-related toxicities, cosmetic outcome, and local, regional, and distant breast cancer recurrence.

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