PO.CL09.02 · 临床研究
诊断时的老年营养风险指数可预测胰腺癌生存
Geriatric nutritional risk index at diagnosis predicts survival in pancreatic cancer
作者与单位 Authors & Affiliations
摘要 Abstract
中文摘要
引言:胰腺癌(PC)是最致命的癌症之一,因恶病质和营养不良导致总生存期下降。早期发现营养风险对改善治疗结局至关重要。可靠、有效且易于在临床环境中应用的工具将有助于解决这一问题。老年营养风险指数(GNRI)利用常见的临床指标评估营养风险,可能有助于早在诊断时即检出风险。尽管GNRI在肿瘤学中获得支持,但仍需更多研究验证其在PC中的应用。本研究的目的是在控制人口统计学和癌症分期的情况下,检查诊断时GNRI对PC生存的预测价值。
方法:这项回顾性研究利用UF Health电子健康记录的去标识化数据,纳入了924例2012年1月1日至2020年7月31日间就诊的原发性PC成年患者。GNRI采用Lorenz公式计算理想体重(Wlo)。使用诊断后120天内最接近诊断的体重和血清白蛋白。GNRI = [1.489 x 白蛋白(g/L)] + [41.7 x(体重/Wlo)]。评分分为3组:高风险(<92)、低风险(92-98)、无风险(>98)。生存:诊断至死亡之间的天数,含删失。协变量:年龄、种族、性别、分期。对GNRI缺失数据(290例患者,31.4%)采用多重插补。统计分析:描述性统计、采用加速失效时间(AFT)模型的生存分析。
结果:结果(表1)显示,诊断时GNRI、年龄和分期可预测生存,而种族或性别不能。
结论:在控制其他有影响的变量后,诊断时较高的GNRI评分预示PC患者生存更长。低风险和无风险患者的生存是高风险患者的两倍以上,GNRI对于早期发现需要进行主动营养干预是有效的。仍需进一步研究以探究GNRI评分变化对生存的长期影响。
表1. 描述性统计与生存分析结果 变量 总样本(n=924) GNRI组 单变量结果 多变量结果 高风险(n=202) 低风险(n=129) 无风险(n=303) p值 AF(95%CI) p值 AF(95%CI) GNRI组 高风险 参照 参照 参照 参照 低风险 0.0019 2.26(1.4-3.8) 0.0046 2.04(1.25-3.34) 无风险 <0.0001 3.24(2.1-4.9) <0.0001 2.66(1.77-4.00) 生存(天) 均值 1047 833 1091 1248 中位 654 278 717 968 范围 1-3164 5-3154 17-3128 8-3164 年龄(岁) 均值 71.7 72.7 69.7 71.0 0.0031 每1年 0.0057 每1年 中位 73 73 72 72 0.98(0.96-0.99) 0.98(0.97-0.99) 范围 27-101 27-94 34-93 30-98 性别 男 501(54.2%) 105(52.0%) 65(50.4%) 166(54.8%) 参照 参照 女 423(45.8%) 97(48.0%) 64(49.6%) 137(45.2%) 0.2196 1.23(0.89-1.70) 种族 白人 741(80.2%) 168(83.2%) 103(79.8%) 251(82.8%) 参照 参照 所有其他 183(79.8%) 34(16.8%) 26(20.2%) 52(17.2%) 0.8755 1.03(0.69-1.56 分期 早期:1-2 480(51.9%) 91(45.0%) 64(49.6%) 182(60.1%) 参照 参照 参照 参照 晚期:3-4 444(48.1%) 111(55.0%) 65(50.4%) 121(39.9%) <0.0001 0.27(0.19-0.36) <0.0001 0.29(0.22-0.40) 注:GNRI:老年营养风险指数,AF:加速因子,CI:置信区间
查看英文原文 English abstract
Introduction : Pancreatic cancer (PC) is one of the deadliest cancers with decreased overall survival due to cachexia and malnutrition. Early detection of nutritional risk is essential to improve treatment outcomes. Reliable and valid tools that are easily applicable in clinical settings will benefit to resolve this issue. The Geriatric Nutritional Risk Index (GNRI) utilizes commonly available clinical measures to assess nutritional risk, which may be useful in detecting risk as early as at diagnosis. Despite support for the GNRI in oncology, more research is needed to validate its use in PC. The purpose of this study was to examine the predictive value of the GNRI at diagnosis on survival in PC, controlling for demographics and cancer stage.
Methods : 924 adult patients with primary PC, visited between January 1, 2012, and July 31, 2020 were included in the retrospective study using de-identified data from the UF Health electronic health record. GNRI calculated using the Lorenz formula for ideal weight (Wlo). Weight and serum albumin closest to diagnosis within 120 days used. GNRI = [1.489 x albumin (g/L)] + [41.7 x (weight/Wlo)]. Scores categorized into 3 groups: high (<92), low (92-98), no risk (>98). Survival: days between diagnosis and death with censoring. Covariates: age, race, sex, stage. Multiple imputation used for GNRI missing data (290 patients, 31.4%). Statistical analysis: descriptive statistics, survival analysis using accelerated failure time (AFT) models.
Results : Results (Table 1) show GNRI at diagnosis, age, and stage predict survival, but not race or sex.
Conclusion : Higher GNRI scores at diagnosis predicted longer survival in PC, after controlling for other influential variables. With patients at low and no risk having over twice the survival compared to those at high risk, the GNRI is effective in early detection for need of proactive nutritional interventions. Further research is needed to investigate the long-term effects of changes in GNRI score on survival.
Table 1. Descriptive statistics and Survival analysis results Variables Total Sample(n=924) GNRI groups Univariate Results Multivariate Results High Risk (n=202) Low Risk (n=129) No Risk (n=303) p-value AF (95%CI) p-value AF (95%CI) GNRI groups High risk Ref. Ref. Ref. Ref. Low Risk 0.0019 2.26 (1.4-3.8) 0.0046 2.04 (1.25-3.34) No Risk <0.0001 3.24 (2.1-4.9) <0.0001 2.66 (1.77-4.00) Survival (days) Mean 1047 833 1091 1248 Median 654 278 717 968 Range 1-3164 5-3154 17-3128 8-3164 Age (years) Mean 71.7 72.7 69.7 71.0 0.0031 Per 1 year 0.0057 Per 1 year Median 73 73 72 72 0.98 (0.96-0.99) 0.98 (0.97-0.99) Range 27-101 27-94 34-93 30-98 Sex Male 501(54.2%) 105(52.0%) 65(50.4%) 166(54.8%) Ref. Ref. Female 423(45.8%) 97(48.0%) 64(49.6%) 137(45.2%) 0.2196 1.23 (0.89-1.70) Race White 741(80.2%) 168(83.2%) 103(79.8%) 251(82.8%) Ref. Ref. All Other 183(79.8%) 34(16.8%) 26(20.2%) 52(17.2%) 0.8755 1.03 (0.69-1.56 Stage Early: 1-2 480(51.9%) 91(45.0%) 64(49.6%) 182(60.1%) Ref. Ref. Ref. Ref. Late: 3-4 444(48.1%) 111(55.0%) 65(50.4%) 121(39.9%) <0.0001 0.27 (0.19-0.36) <0.0001 0.29 (0.22-0.40) Note: GNRI: Geriatric Nutritional Risk Index, AF: Acceleration Factor, CI: confidence interval
利益披露 Disclosure
C. Grinstead, None.