TY - JOUR
T1 - Acute and Short-term Toxic Effects of Conventionally Fractionated vs Hypofractionated Whole-Breast Irradiation
T2 - A Randomized Clinical Trial
AU - Shaitelman, Simona F
AU - Schlembach, Pamela J
AU - Arzu, Isidora
AU - Ballo, Matthew
AU - Bloom, Elizabeth S
AU - Buchholz, Daniel
AU - Chronowski, Gregory M
AU - Dvorak, Tomas
AU - Grade, Emily
AU - Hoffman, Karen E
AU - Kelly, Patrick
AU - Ludwig, Michelle
AU - Perkins, George H
AU - Reed, Valerie
AU - Shah, Shalin
AU - Stauder, Michael C
AU - Strom, Eric A
AU - Tereffe, Welela
AU - Woodward, Wendy A
AU - Ensor, Joe
AU - Baumann, Donald
AU - Thompson, Alastair M
AU - Amaya, Diana
AU - Davis, Tanisha
AU - Guerra, William
AU - Hamblin, Lois
AU - Hortobagyi, Gabriel
AU - Hunt, Kelly K
AU - Buchholz, Thomas A
AU - Smith, Benjamin D
PY - 2015/10
Y1 - 2015/10
N2 - IMPORTANCE: The most appropriate dose fractionation for whole-breast irradiation (WBI) remains uncertain.OBJECTIVE: To assess acute and 6-month toxic effects and quality of life (QOL) with conventionally fractionated WBI (CF-WBI) vs hypofractionated WBI (HF-WBI).DESIGN, SETTING, AND PARTICIPANTS: Unblinded randomized trial of CF-WBI (n = 149; 50.00 Gy/25 fractions + boost [10.00-14.00 Gy/5-7 fractions]) vs HF-WBI (n = 138; 42.56 Gy/16 fractions + boost [10.00-12.50 Gy/4-5 fractions]) following breast-conserving surgery administered in community-based and academic cancer centers to 287 women 40 years or older with stage 0 to II breast cancer for whom WBI without addition of a third field was recommended; 76% of study participants (n = 217) were overweight or obese. Patients were enrolled from February 2011 through February 2014 and observed for a minimum of 6 months.INTERVENTIONS: Administration of CF-WBI or HF-WBI.MAIN OUTCOMES AND MEASURES: Physician-reported acute and 6-month toxic effects using National Cancer Institute Common Toxicity Criteria, and patient-reported QOL using the Functional Assessment of Cancer Therapy for Patients with Breast Cancer (FACT-B). All analyses were intention to treat, with outcomes compared using the χ2 test, Cochran-Armitage test, and ordinal logistic regression.RESULTS: Of 287 participants, 149 were randomized to CF-WBI and 138 to HF-WBI. Treatment arms were well matched for baseline characteristics, including FACT-B total score (HF-WBI, 120.1 vs CF-WBI, 118.8; P = .46) and individual QOL items such as somewhat or more lack of energy (HF-WBI, 38% vs CF-WBI, 39%; P = .86) and somewhat or more trouble meeting family needs (HF-WBI, 10% vs CF-WBI, 14%; P = .54). Maximum physician-reported acute dermatitis (36% vs 69%; P < .001), pruritus (54% vs 81%; P < .001), breast pain (55% vs 74%; P = .001), hyperpigmentation (9% vs 20%; P = .002), and fatigue (9% vs 17%; P = .02) during irradiation were lower in patients randomized to HF-WBI. The rate of overall grade 2 or higher acute toxic effects was less with HF-WBI than with CF-WBI (47% vs 78%; P < .001). Six months after irradiation, physicians reported less fatigue in patients randomized to HF-WBI (0% vs 6%; P = .01), and patients randomized to HF-WBI reported less lack of energy (23% vs 39%; P < .001) and less trouble meeting family needs (3% vs 9%; P = .01). Multivariable regression confirmed the superiority of HF-WBI in terms of patient-reported lack of energy (odds ratio [OR], 0.39; 95% CI, 0.24-0.63) and trouble meeting family needs (OR, 0.34; 95% CI, 0.16-0.75).CONCLUSIONS AND RELEVANCE: Treatment with HF-WBI appears to yield lower rates of acute toxic effects than CF-WBI as well as less fatigue and less trouble meeting family needs 6 months after completing radiation therapy. These findings should be communicated to patients as part of shared decision making.TRIAL REGISTRATION: clinicaltrials.gov Identifier: NCT01266642.
AB - IMPORTANCE: The most appropriate dose fractionation for whole-breast irradiation (WBI) remains uncertain.OBJECTIVE: To assess acute and 6-month toxic effects and quality of life (QOL) with conventionally fractionated WBI (CF-WBI) vs hypofractionated WBI (HF-WBI).DESIGN, SETTING, AND PARTICIPANTS: Unblinded randomized trial of CF-WBI (n = 149; 50.00 Gy/25 fractions + boost [10.00-14.00 Gy/5-7 fractions]) vs HF-WBI (n = 138; 42.56 Gy/16 fractions + boost [10.00-12.50 Gy/4-5 fractions]) following breast-conserving surgery administered in community-based and academic cancer centers to 287 women 40 years or older with stage 0 to II breast cancer for whom WBI without addition of a third field was recommended; 76% of study participants (n = 217) were overweight or obese. Patients were enrolled from February 2011 through February 2014 and observed for a minimum of 6 months.INTERVENTIONS: Administration of CF-WBI or HF-WBI.MAIN OUTCOMES AND MEASURES: Physician-reported acute and 6-month toxic effects using National Cancer Institute Common Toxicity Criteria, and patient-reported QOL using the Functional Assessment of Cancer Therapy for Patients with Breast Cancer (FACT-B). All analyses were intention to treat, with outcomes compared using the χ2 test, Cochran-Armitage test, and ordinal logistic regression.RESULTS: Of 287 participants, 149 were randomized to CF-WBI and 138 to HF-WBI. Treatment arms were well matched for baseline characteristics, including FACT-B total score (HF-WBI, 120.1 vs CF-WBI, 118.8; P = .46) and individual QOL items such as somewhat or more lack of energy (HF-WBI, 38% vs CF-WBI, 39%; P = .86) and somewhat or more trouble meeting family needs (HF-WBI, 10% vs CF-WBI, 14%; P = .54). Maximum physician-reported acute dermatitis (36% vs 69%; P < .001), pruritus (54% vs 81%; P < .001), breast pain (55% vs 74%; P = .001), hyperpigmentation (9% vs 20%; P = .002), and fatigue (9% vs 17%; P = .02) during irradiation were lower in patients randomized to HF-WBI. The rate of overall grade 2 or higher acute toxic effects was less with HF-WBI than with CF-WBI (47% vs 78%; P < .001). Six months after irradiation, physicians reported less fatigue in patients randomized to HF-WBI (0% vs 6%; P = .01), and patients randomized to HF-WBI reported less lack of energy (23% vs 39%; P < .001) and less trouble meeting family needs (3% vs 9%; P = .01). Multivariable regression confirmed the superiority of HF-WBI in terms of patient-reported lack of energy (odds ratio [OR], 0.39; 95% CI, 0.24-0.63) and trouble meeting family needs (OR, 0.34; 95% CI, 0.16-0.75).CONCLUSIONS AND RELEVANCE: Treatment with HF-WBI appears to yield lower rates of acute toxic effects than CF-WBI as well as less fatigue and less trouble meeting family needs 6 months after completing radiation therapy. These findings should be communicated to patients as part of shared decision making.TRIAL REGISTRATION: clinicaltrials.gov Identifier: NCT01266642.
KW - Academic Medical Centers
KW - Breast Neoplasms
KW - Carcinoma, Ductal, Breast
KW - Carcinoma, Intraductal, Noninfiltrating
KW - Chi-Square Distribution
KW - Dose Fractionation
KW - Dose Hypofractionation
KW - Female
KW - Humans
KW - Logistic Models
KW - Mastectomy, Segmental
KW - Multivariate Analysis
KW - Neoplasm Staging
KW - Odds Ratio
KW - Quality of Life
KW - Radiation Injuries
KW - Radiotherapy, Adjuvant
KW - Risk Factors
KW - Severity of Illness Index
KW - Surveys and Questionnaires
KW - Time Factors
KW - Treatment Outcome
KW - United States
KW - Journal Article
KW - Multicenter Study
KW - Randomized Controlled Trial
KW - Research Support, N.I.H., Extramural
KW - Research Support, Non-U.S. Gov't
U2 - 10.1001/jamaoncol.2015.2666
DO - 10.1001/jamaoncol.2015.2666
M3 - Article
C2 - 26247543
VL - 1
SP - 931
EP - 941
JO - JAMA oncology
JF - JAMA oncology
SN - 2374-2437
IS - 7
ER -