Randomized Phase III Trial of Prophylactic Cranial Irradiation With or Without Hippocampal Avoidance for Small-Cell Lung Cancer (PREMER): A GICOR-GOECP-SEOR Study

预防性头颅照射 医学 传统PCI 肺癌 神经认知 累积发病率 临床终点 内科学 外科 随机对照试验 麻醉
作者
Nuria Rodríguez de Dios,Felipe Couñago,M. Murcia-Mejía,Mikel Rico-Oses,P. Calvo-Crespo,Pilar Samper,Carmen Vallejo,Javier Ras Luna,Itziar Trueba,Amalia Sotoca,Cristina Cigarral,Núria Farré,R.M. Manero,Xavier Duran,Juan Domigo Gispert,Gonzalo Sánchez-Benavides,T. Rognoni,Margarita Torrente,Jaume Capellades,Mar Jiménez,Teresa Cabada,Miguel Blanco,Ana Isabel Reguera Alonso,Juan Martínez-San Millán,José Escribano,Beatriz Santiago González,J.L. López-Guerra
出处
期刊:Journal of Clinical Oncology [American Society of Clinical Oncology]
卷期号:39 (28): 3118-3127 被引量:21
标识
DOI:10.1200/jco.21.00639
摘要

Radiation dose received by the neural stem cells of the hippocampus during whole-brain radiotherapy has been associated with neurocognitive decline. The key concern using hippocampal avoidance-prophylactic cranial irradiation (HA-PCI) in patients with small-cell lung cancer (SCLC) is the incidence of brain metastasis within the hippocampal avoidance zone.This phase III trial enrolled 150 patients with SCLC (71.3% with limited disease) to standard prophylactic cranial irradiation (PCI; 25 Gy in 10 fractions) or HA-PCI. The primary objective was the delayed free recall (DFR) on the Free and Cued Selective Reminding Test (FCSRT) at 3 months; a decrease of 3 points or greater from baseline was considered a decline. Secondary end points included other FCSRT scores, quality of life (QoL), evaluation of the incidence and location of brain metastases, and overall survival (OS). Data were recorded at baseline, and 3, 6, 12, and 24 months after PCI.Participants' baseline characteristics were well balanced between the two groups. The median follow-up time for living patients was 40.4 months. Decline on DFR from baseline to 3 months was lower in the HA-PCI arm (5.8%) compared with the PCI arm (23.5%; odds ratio, 5; 95% CI, 1.57 to 15.86; P = .003). Analysis of all FCSRT scores showed a decline on the total recall (TR; 8.7% v 20.6%) at 3 months; DFR (11.1% v 33.3%), TR (20.3% v 38.9%), and total free recall (14.8% v 31.5%) at 6 months, and TR (14.2% v 47.6%) at 24 months. The incidence of brain metastases, OS, and QoL were not significantly different.Sparing the hippocampus during PCI better preserves cognitive function in patients with SCLC. No differences were observed with regard to brain failure, OS, and QoL compared with standard PCI.
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