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PCNSL between 2000 and 2016 were extracted from the Surveillance,Epidemiology and End Results database in 2020,including
sociodemographics〔marital status(married,or single containing unmarried,divorced or widowed),age of diagnosis,year of
diagnosis,ethnicity,gender〕,clinicopathological features(pathological type and location of the PCNSL),treatment(surgery,
radiotherapy and chemotherapy) and outcome data(survival and follow-up time). The propensity score matching(PSM) was
used to balance the baseline variables of the married and singles. The Log-rank test was used to compare the Kaplan-Meier curves
of OS and CSS by marital status. Cox regression was used to identify the association of marital status with OS and CSS. Results
After PSM,there were no significant differences in baseline variables between married and single patients(P>0.05). The
Log-rank test demonstrated that single patients had worse OS and CSS than the married(P<0.05). Further analysis revealed that
the widowed singles had worse OS and CSS than the married(P<0.05). After adjusting for age of diagnosis,ethnicity,gender,
year of diagnosis,pathological type and location of the PCNSL,surgery,radiotherapy and chemotherapy,multivariate analysis
found that compared to those married,the risk of death was 1.24 times higher〔95%CI(1.14,1.36),P<0.001〕 and the risk
of cancer-specific death was 1.22 times higher〔95%CI(1.11,1.33),P<0.001〕in singles. Further analysis revealed that
compared with married patients,the risk of worse OS increased by a factor of 1.14〔95%CI(1.03,1.27),P=0.013〕 and that
of worse CSS increased by a factor of 1.15〔95%CI(1.03,1.29),P=0.012〕in unmarried singles;the risk of worse OS and CSS
increased by a factor of 1.23〔95%CI(1.07,1.41),P=0.004〕 and by a factor of 1.22〔95%CI(1.05,1.41),P=0.009〕,
respectively,in divorced singles;the risk of worse OS and CSS increased by a factor of 1.37〔95%CI(1.21,1.54),P<0.001〕
and by a factor of 1.28〔95%CI(1.12,1.46),P=0.013〕,respectively,in widowed singles. Conclusion Marital status
was associated with OS and CSS in PCNSL patients. The unmarried,divorced and widowed singles may have worse OS and CSS,
suggesting that more attention should be given to the marital status of these patients besides biological characteristics of PCNSL during
the clinical management.
【Key words】 Primary central nervous system lymphoma;Marital status;Cancer-specific survival;Overall survival;
SEER database
原发性中枢神经系统淋巴瘤(PCNSL)是一种罕见
本研究要点:
的淋巴结外非霍奇金淋巴瘤,原发位置仅局限于脑、脑 原发性中枢神经系统淋巴瘤(PCNSL)的预后较
脊膜、脊髓和眼等中枢神经系统,无其他部位受累 [1] 。 差,而婚姻状态对 PNSCL 患者预后的影响尚不明确。
PCNSL 具有高度侵袭性 [2] ,预后差,其 5 年和 10 年
本研究通过美国“监测、流行病学和结果”数据库获
生存率分别仅为 29.9% 和 22.2%,中位生存时间仅为 取 PCNSL 病例资料,探究婚姻状态对 PCNSL 患者总
31 个月 [3-4] 。因此,明确 PCNSL 的独立预后危险因
生存(OS)和癌因生存(CSS)的影响。 结果显示,
素是改善 PCNSL 患者预后的重要环节,这已成为当前
与已婚患者相比,非已婚 PCNSL 患者的 OS 和 CSS 更
PCNSL 研究的热点问题。既往研究显示,除临床病理
差;进一步分析发现,相比于已婚 PCNSL 患者,单
因素外,已明确的 PCNSL 患者的独立预后危险因素包 身患者、离异患者和丧偶患者的 OS 和 CSS 均更差。
括年龄、病理类型、体力状况评分和化疗等 [5-7] 。然
提示在临床实践中,除了关注传统的肿瘤生物学特征
而,生物 - 心理 - 社会医学模式提示临床工作者除了
外,还应关注婚姻状态对 PCNSL 患者预后的影响。
关注患者的临床病理因素,还应关注患者的社会心理因
素 [8] 。婚姻是重要的社会心理因素之一 [9] ,研究已明 PCNSL 病例数据,通过倾向性评分匹配(PSM)均衡组
确婚姻状态与多种癌症的预后相关,如口颊癌、肺癌、 间基线资料偏倚,探究婚姻状态对 PCNSL 患者预后的
软组织肉瘤等 [8,10-11] 。近期研究初步发现,婚姻状态 影响。
与 PCNSL 患者预后有关,但该研究仅将婚姻状态作为 1 对象与方法
协变量之一,未均衡不同婚姻状态患者的组间基线资 1.1 病例选择 本研究为多中心的回顾性研究,从
料,结果可能存在偏倚;并且该研究纳入了婚姻状态未 SEER Stat 软件(version 8.3.6)收集 2000—2016 年病理
知的患者,这对探究婚姻状态与 PCNSL 患者预后的关 确诊的 PCNSL 患者的病例资料。SEER 数据库是国际公
系造成较大的混杂影响 [12] 。因此,婚姻状态对 PCNSL 认的权威数据库,收集了 18 个肿瘤中心的资料,已被
患者预后的影响尚不确定,需要通过均衡患者的组间基 国内外研究广泛使用 [10,13-14] 。PCNSL 的诊断标准为:(1)
线资料偏倚进一步明确。由于 PCNSL 发病率低,为实 《国际肿瘤分类法》第 3 版(ICD-O-3)的组织学代码
现多中心、大样本病例数据的获取,本研究从美国国立 为 590-9599、9670-9699、9700-9719、9720-9729;(2)
癌症研究所“监测、流行病学和结果”(Surveillance, 肿瘤解剖部位代码为 C71.0-C72.9、C75.1、C75.3 [15] 。
Epidemiology,and End Results,SEER) 数 据 库 获 取 患者纳入标准:(1)确诊年龄≥ 18 岁;(2)随访信