Patient‐reported outcomes from a phase 3 randomized controlled trial of inotuzumab ozogamicin versus standard therapy for relapsed/refractory acute lymphoblastic leukemia
BACKGROUND Inotuzumab ozogamicin (InO), an anti‐CD22 antibody‐calicheamicin conjugate, demonstrated superior clinical activity versus standard‐of‐care (SOC) chemotherapies for relapsed/refractory B‐cell acute lymphoblastic leukemia in the phase 3 randomized controlled INO‐VATE trial. The authors ass...
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Published in | Cancer Vol. 124; no. 10; pp. 2151 - 2160 |
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Main Authors | , , , , , , |
Format | Journal Article |
Language | English |
Published |
United States
Wiley Subscription Services, Inc
15.05.2018
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Subjects | |
Online Access | Get full text |
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Summary: | BACKGROUND
Inotuzumab ozogamicin (InO), an anti‐CD22 antibody‐calicheamicin conjugate, demonstrated superior clinical activity versus standard‐of‐care (SOC) chemotherapies for relapsed/refractory B‐cell acute lymphoblastic leukemia in the phase 3 randomized controlled INO‐VATE trial. The authors assessed patient‐reported outcomes (PROs) from that study.
METHODS
Patients were randomized to receive either InO (1.8 mg/m2 per cycle for ≤6 cycles) or SOC (fludarabine/cytarabine [ara‐C]/granulocyte colony‐stimulating factor, or ara‐C plus mitoxantrone, or high‐dose ara‐C for ≤4 cycles) and completed the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire and the EuroQoL 5 Dimensions Questionnaires at baseline, on day 1 of each cycle, and at the end of treatment. Treatment differences in PROs were assessed using longitudinal mixed‐effects models with random intercepts and slopes.
RESULTS
Questionnaire completion rates in the InO (n = 164) and SOC (n = 162) arms were 85% and 65%, respectively. Baseline scores were similar between arms. Patients who received InO reported better quality of life (QoL), functioning, and symptom scores (except for constipation and emotional functioning). Least‐squares mean (95% confidence interval [CI]) differences in physical, role, and social functioning and in appetite loss were significant (6.9 [95% CI, 1.4‐12.3], 11.4 [95% CI, 3.2‐19.5], 8.4 [95% CI, 0.7‐16.1], and −8.7 [95% CI, −16.0 to −1.4], respectively; all P < .05) and had exceeded the minimally important difference of 5. Mean treatment differences in favor of InO on the EuroQoL visual analog scale and the global health status/QoL, dyspnea, and fatigue scales reached or approached the minimally important difference of 5, although without statistical significance. No dimensions were significantly worse with InO versus SOC.
CONCLUSIONS
The current PRO data support the favorable benefit/risk ratio of InO for the treatment of relapsed/refractory acute lymphoblastic leukemia, with superior clinical efficacy and better QoL. Cancer 2018;124:2151‐60. © 2018 American Cancer Society.
The superior efficacy of inotuzumab ozogamicin versus standard therapy in patients with relapsed/refractory B‐cell acute lymphoblastic leukemia is accompanied by better patient‐reported outcomes. These findings further support the favorable benefit‐risk profile of inotuzumab ozogamicin in this clinical setting. |
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Bibliography: | We thank Mark Shapiro, MD, formerly of Pfizer Inc, for his contributions to the design of this work. Editorial support was provided by Johna Van Stelten, PhD, of Complete Healthcare Communications, LLC (West Chester, PA), a CHC Group company, and was funded by Pfizer Inc. ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 ObjectType-News-3 content type line 23 |
ISSN: | 0008-543X 1097-0142 |
DOI: | 10.1002/cncr.31317 |