Clinical trial NCT02104895: Accelerated Partial Breast Irradiation Using Intensity Modulated Radiotherapy Versus Whole Breast Irradiation
Official title: Randomised Phase 3 Trial Of Accelerated Partial Breast Irradiation Using Intensity Modulated Radiotherapy Versus Whole Breast Irradiation
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: PHASE3
Conditions: Breast Cancer
Keywords: Breast cancer
Early breast cancer
Adjuvant breast cancer
Accelerated partial breast irradiation
Intensity modulated radiotherapy
Lead sponsor: Azienda Ospedaliero-Universitaria Careggi
Sponsor class: OTHER
First posted: 2014-04-07
Enrollment: 520
Sex: FEMALE
Minimum age (years): 40
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: TREATMENT

Brief summary: The aim of this Phase 3 randomised trial is to compare the efficacy and safety of whole breast radiotherapy to accelerated partial breast irradiation using intensity-modulated radiotherapy technique in selected early breast cancer patients after breast conserving surgery.

Detailed description: The surgeons were requested to place clips at the borders of the surgical bed, using a minimum of four clips. The presence of surgical clips was a selection criterion to avoid geographic misses. Computed tomography (CT) scanning was performed using 0.3-cm thick-slices and a slice spacing of 0.3 cm.

In patients assigned to APBI arm, the clinical target volume (CTV) was drawn with a uniform 1-cm three-dimensional margin around the surgical clips. The CTV was limited to 3 mm from the skin surface and 3 mm from the lung-chest wall interface. A second uniform, three-dimensional 1-cm margin was added to the CTV to obtain the planning target volume (PTV). The PTV was allowed to extend 4 mm inside the ipsilateral lung and was limited to 3 mm from the skin. The ipsilateral and contralateral breast, ipsilateral and contralateral lung, heart, and spinal cord were contoured as organs at risk.

All the regions of interest were contoured according to the International Commission on Radiation Units and Measurements reports 50 and 62 recommendations. No respiratory control was used.

Concerning the experimental Arm (accelerated partial breast irradiation), a dose of 30 Gy in five fractions at 6 Gy/fraction was prescribed.

The following constraints were adopted for plan optimization: PTV coverage: 100% of PTV covered by 95% of the prescribed dose (V28.5 = 100%); maximal dose to PTV \<105% (31.5 Gy); minimal dose to PTV 28 Gy; uninvolved breast (i.e., ipsilateral breast without PTV): not \>50% covered by a dose of \>50% of the prescribed dose (V15 \<50%); ipsilateral lung: not \>20% covered by a dose \>10 Gy (V10\<20%); contralateral lung: not \>10% covered by a dose \>5 Gy (V5\<10%); contralateral breast: maximal dose \<1 Gy; heart: not \>10% covered by a dose \>3 Gy (V3 \<10%).

Eligibility criteria: Inclusion Criteria:

* Age at presentation \>40 y
* Tumor size \<25 mm
* Wide excision or quadrantectomy with clear margins (\>5 mm)
* Clips placed in tumor bed
* Full informed consent from patient

Exclusion Criteria:

* Cardiac dysfunction
* Forced expiratory volume in 1 second (FEV1) \<1 L/m
* Extensive intraductal carcinoma
* Multifocal cancer
* Psychiatric problems
* Recurrent breast cancer

Primary outcomes:
measure: Ipsilateral Breast Tumor Recurrence
timeFrame: 5-year
Secondary outcomes:
measure: Acute Skin Toxicity
timeFrame: 5 years
measure: Excellent Cosmesis
timeFrame: 5 years
Other outcomes:
Locations:
Study officials:
affiliation: Florence University
name: Lorenzo Livi, Full Prof
role: PRINCIPAL_INVESTIGATOR
affiliation: Azienda Ospedaliero-Universitaria Careggi
name: Icro Meattini, M.D.
role: PRINCIPAL_INVESTIGATOR
References:
citation: Livi L, Buonamici FB, Simontacchi G, Scotti V, Fambrini M, Compagnucci A, Paiar F, Scoccianti S, Pallotta S, Detti B, Agresti B, Talamonti C, Mangoni M, Bianchi S, Cataliotti L, Marrazzo L, Bucciolini M, Biti G. Accelerated partial breast irradiation with IMRT: new technical approach and interim analysis of acute toxicity in a phase III randomized clinical trial. Int J Radiat Oncol Biol Phys. 2010 Jun 1;77(2):509-15. doi: 10.1016/j.ijrobp.2009.04.070. Epub 2009 Aug 21.
citation: Livi L, Meattini I, Marrazzo L, Simontacchi G, Pallotta S, Saieva C, Paiar F, Scotti V, De Luca Cardillo C, Bastiani P, Orzalesi L, Casella D, Sanchez L, Nori J, Fambrini M, Bianchi S. Accelerated partial breast irradiation using intensity-modulated radiotherapy versus whole breast irradiation: 5-year survival analysis of a phase 3 randomised controlled trial. Eur J Cancer. 2015 Mar;51(4):451-463. doi: 10.1016/j.ejca.2014.12.013. Epub 2015 Jan 17.
citation: Meattini I, Saieva C, Marrazzo L, Di Brina L, Pallotta S, Mangoni M, Meacci F, Bendinelli B, Francolini G, Desideri I, De Luca Cardillo C, Scotti V, Furfaro IF, Rossi F, Greto D, Bonomo P, Casella D, Bernini M, Sanchez L, Orzalesi L, Simoncini R, Nori J, Bianchi S, Livi L. Accelerated partial breast irradiation using intensity-modulated radiotherapy technique compared to whole breast irradiation for patients aged 70 years or older: subgroup analysis from a randomized phase 3 trial. Breast Cancer Res Treat. 2015 Oct;153(3):539-47. doi: 10.1007/s10549-015-3565-2. Epub 2015 Sep 9.
citation: Meattini I, Marrazzo L, Saieva C, Desideri I, Scotti V, Simontacchi G, Bonomo P, Greto D, Mangoni M, Scoccianti S, Lucidi S, Paoletti L, Fambrini M, Bernini M, Sanchez L, Orzalesi L, Nori J, Bianchi S, Pallotta S, Livi L. Accelerated Partial-Breast Irradiation Compared With Whole-Breast Irradiation for Early Breast Cancer: Long-Term Results of the Randomized Phase III APBI-IMRT-Florence Trial. J Clin Oncol. 2020 Dec 10;38(35):4175-4183. doi: 10.1200/JCO.20.00650. Epub 2020 Aug 24.
citation: Becherini C, Meattini I, Livi L, Garlatti P, Desideri I, Scotti V, Orzalesi L, Sanchez LJ, Bernini M, Casella D, Nesi S, Nori J, Bianchi S, Pallotta S, Marrazzo L. External accelerated partial breast irradiation for ductal carcinoma in situ: long-term follow-up from a phase 3 randomized trial. Tumori. 2019 Jun;105(3):205-209. doi: 10.1177/0300891618811278. Epub 2018 Nov 26.
citation: Meattini I, Saieva C, Miccinesi G, Desideri I, Francolini G, Scotti V, Marrazzo L, Pallotta S, Meacci F, Muntoni C, Bendinelli B, Sanchez LJ, Bernini M, Orzalesi L, Nori J, Bianchi S, Livi L. Accelerated partial breast irradiation using intensity modulated radiotherapy versus whole breast irradiation: Health-related quality of life final analysis from the Florence phase 3 trial. Eur J Cancer. 2017 May;76:17-26. doi: 10.1016/j.ejca.2017.01.023. Epub 2017 Mar 3.