Xu Binghe, Hu Xichun, Li Wei, Sun Tao, Shen Kunwei, Huang ChiunSheng, Sriuranpong Virote, Ngan Roger Kc, Chia Yee H, Reisman Arlene, Zhao Huadong, Shen Jiayun, Broughton Edward
Department of Medical Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China.
Department of Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai 200032, China.
Chin Med J (Engl). 2024 Dec 19. doi: 10.1097/CM9.0000000000003122.
Palbociclib plus an aromatase inhibitor is approved for treatment of patients with ER+/HER2- advanced breast cancer (ABC). In the PALOMA-4 trial, adding palbociclib to letrozole prolonged median progression-free survival in Asian women with ER+/HER2- ABC. Here, we report patient-reported outcomes (PROs) from PALOMA-4.
PALOMA-4 was a randomized, double-blind, phase 3 trial of palbociclib plus letrozole vs. placebo plus letrozole treatment in postmenopausal Asian women with ER+/HER2- ABC. PROs were longitudinally assessed using the Functional Assessment of Cancer Therapy-Breast (FACT-B) and EuroQoL 5D three level (EQ-5D-3L) questionnaires. Group comparisons were analyzed using longitudinal, mixed-effects models.
Patients were randomly assigned to palbociclib plus letrozole (n = 169) or placebo plus letrozole (n = 171) treated groups. No significant between-arm differences in change from baseline were observed in FACT-B and its subscales, or the EQ-5D-3L index. A significant, but not clinically meaningful difference was observed in change from baseline in mean EQ-VAS score favoring palbociclib plus letrozole (3.36; 95% confidence interval [CI], 0.88-5.83; P = 0.008). When patients from both arms were combined, significant differences in the mean change from baseline for FACT-B total were observed favoring treatment responders vs. non-responders (3.84; 95% CI, 0.33-7.36; P = 0.032) and for the Breast Cancer Subscale favoring patients without disease progression vs. those with progression (0.97; 95% CI, 0.05-1.89; P = 0.038).
Quality of life was maintained when palbociclib was added to letrozole in Asian women with ABC. These findings are consistent with PALOMA-2 results and support the use of palbociclib as first-line treatment in postmenopausal Asian patients with ER+/HER2- ABC.
clinicaltrials.gov, NCT02297438.
帕博西尼联合芳香化酶抑制剂已被批准用于治疗雌激素受体阳性/人表皮生长因子受体2阴性(ER+/HER2-)的晚期乳腺癌(ABC)患者。在PALOMA-4试验中,对于ER+/HER2-的ABC亚洲女性患者,在来曲唑基础上加用帕博西尼可延长中位无进展生存期。在此,我们报告PALOMA-4试验中患者报告的结局(PROs)。
PALOMA-4是一项随机、双盲、3期试验,在绝经后ER+/HER2-的ABC亚洲女性患者中,比较帕博西尼联合来曲唑与安慰剂联合来曲唑的治疗效果。使用癌症治疗功能评估-乳腺癌(FACT-B)问卷和欧洲五维健康量表三级(EQ-5D-3L)问卷对PROs进行纵向评估。采用纵向混合效应模型进行组间比较分析。
患者被随机分配至帕博西尼联合来曲唑治疗组(n = 169)或安慰剂联合来曲唑治疗组(n = 171)。在FACT-B及其子量表或EQ-5D-3L指数方面,未观察到两组间从基线变化的显著差异。在平均EQ-VAS评分从基线的变化方面,观察到有利于帕博西尼联合来曲唑组的显著差异,但无临床意义(3.36;95%置信区间[CI],0.88 - 5.83;P = 0.008)。当将两组患者合并分析时,观察到FACT-B总分从基线的平均变化在治疗反应者与无反应者之间存在显著差异(3.84;95%CI,0.33 - 7.36;P = 0.032),在乳腺癌子量表方面,疾病无进展患者与有进展患者之间存在显著差异(0.97;95%CI,0.05 - 1.89;P = 0.038)。
在ABC亚洲女性患者中,来曲唑加用帕博西尼时生活质量得以维持。这些发现与PALOMA-2的结果一致,支持将帕博西尼作为绝经后ER+/HER2-的ABC亚洲患者的一线治疗药物。
clinicaltrials.gov,NCT02297438