儿童癌症幸存者的种族和民族、社会经济因素以及表观遗传年龄加速。
Race and Ethnicity, Socioeconomic Factors, and Epigenetic Age Acceleration in Survivors of Childhood Cancer.
发表日期:2024 Jul 01
作者:
Cheng Chen, Noel-Marie Plonski, Qian Dong, Nan Song, Xijun Zhang, Hemang M Parikh, Emily R Finch, John Easton, Heather L Mulder, Emily Walker, Geoffrey Neale, Yue Pan, Qian Li, Jinghui Zhang, Kevin Krull, Leslie L Robison, Gregory T Armstrong, Yutaka Yasui, Kirsten K Ness, Melissa M Hudson, Hui Wang, I-Chan Huang, Zhaoming Wang
来源:
Epigenetics & Chromatin
摘要:
目前表观遗传年龄加速(EAA)的研究仅限于非西班牙裔白人。在 EAA 研究中必须考虑种族和族裔少数群体,以提高包容性。通过检查 EAA 与癌症治疗暴露的关联、EAA 中潜在的种族和民族差异,比较非西班牙裔黑人和非西班牙裔白人儿童癌症幸存者,健康社会决定因素 (SDOH) 的中介作用。在这项横断面研究中,参与者来自 St Jude 终身队列,该队列于 2007 年启动,目前正在进行随访。符合资格的参与者包括 1962 年至 2012 年间在圣裘德儿童研究医院接受治疗的儿童癌症的非西班牙裔黑人和非西班牙裔白人幸存者,他们拥有 DNA 甲基化数据。数据分析于2023年2月至2024年5月进行。儿童癌症的三种治疗暴露(胸部放射治疗、烷化剂和表鬼臼毒素)。DNA甲基化是由外周血单核细胞衍生的DNA产生的。 EAA 计算为根据实足年龄回归 Levine 或 Horvath 表观遗传年龄的残差。 SDOH 包括教育程度、个人年收入和社会经济领域剥夺指数 (ADI)。一般线性模型评估了 EAA 与种族和民族(非西班牙裔黑人和非西班牙裔白人)和/或 SDOH 的横截面关联,并根据性别、体重指数、吸烟和癌症治疗进行了调整。计算 EAA 的调整最小二乘均值 (ALSM) 以进行组间比较。中介分析将 SDOH 作为中介,计算 EAA 与种族和民族的关联,计算出平均因果中介效应 (ACME)。 总共 1706 名幸存者中,包括 230 名非西班牙裔黑人幸存者(诊断时中位 [IQR] 年龄为 9.5 [4.3]) -14.3] 岁;103 名男性 [44.8%] 和 127 名女性 [55.2%])和 1476 名非西班牙裔白人幸存者(诊断时中位 [IQR] 年龄,9.3 [3.9-14.6] 岁;766 名男性 [51.9%] 和710 名女性 [48.1%]),非西班牙裔黑人幸存者 (ALSM = 1.41;95% CI,0.66 至 2.16) 中的 EAA 显着高于非西班牙裔白人幸存者 (ALSM = 0.47;95% CI,0.12 至 0.81) 。在非西班牙裔黑人幸存者中,接受胸部放疗的患者 (ALSM = 2.82;95% CI,1.37 至 4.26) 与未接受胸部放疗的患者 (ALSM = 0.46;95% CI,-0.60 至 1.51) 相比,EAA 显着增加。暴露于烷化剂的患者(ALSM = 2.33;95% CI,1.21至3.45)与未暴露者(ALSM = 0.95;95% CI,-0.38至2.27),以及暴露于表鬼臼毒素的患者(ALSM = 2.83;95% CI, 1.27 至 4.40)与未暴露者(ALSM = 0.44;95% CI,-0.52 至 1.40)。 EAA 与表鬼臼毒素的关联因种族和民族而异(非西班牙裔黑人幸存者的 β,2.39 年;95% CI,0.74 至 4.04 年;非西班牙裔白人幸存者的 β,0.68;95% CI,0.05 至 1.31 年)且差异显着(1.77 年;95% CI,0.01 至 3.53 年;交互作用 P = .049)。 EAA中的种族和民族差异由教育程度(<高中与≥大学,ACME = 0.13;高中与≥大学,ACME = 0.07;中介 = 22.71%)和ADI(ACME = 0.24;中介 = 22.16%)介导在这项针对儿童癌症幸存者的横断面研究中,种族和民族调节了 EAA 与表鬼臼毒素暴露的关联,并且 EAA 的种族和民族差异部分由教育程度和 ADI 介导,表明种族和民族的治疗毒性作用不同。这些发现表明,改善社会支持系统可以减轻与加速老龄化相关的社会经济劣势,并减少儿童癌症幸存者之间的健康差距。
Current research in epigenetic age acceleration (EAA) is limited to non-Hispanic White individuals. It is imperative to improve inclusivity by considering racial and ethnic minorities in EAA research.To compare non-Hispanic Black with non-Hispanic White survivors of childhood cancer by examining the associations of EAA with cancer treatment exposures, potential racial and ethnic disparity in EAA, and mediating roles of social determinants of health (SDOH).In this cross-sectional study, participants were from the St Jude Lifetime Cohort, which was initiated in 2007 with ongoing follow-up. Eligible participants included non-Hispanic Black and non-Hispanic White survivors of childhood cancer treated at St Jude Children's Research Hospital between 1962 and 2012 who had DNA methylation data. Data analysis was conducted from February 2023 to May 2024.Three treatment exposures for childhood cancer (chest radiotherapy, alkylating agents, and epipodophyllotoxin).DNA methylation was generated from peripheral blood mononuclear cell-derived DNA. EAA was calculated as residuals from regressing Levine or Horvath epigenetic age on chronological age. SDOH included educational attainment, annual personal income, and the socioeconomic area deprivation index (ADI). General linear models evaluated cross-sectional associations of EAA with race and ethnicity (non-Hispanic Black and non-Hispanic White) and/or SDOH, adjusting for sex, body mass index, smoking, and cancer treatments. Adjusted least square means (ALSM) of EAA were calculated for group comparisons. Mediation analysis treated SDOH as mediators with average causal mediation effect (ACME) calculated for the association of EAA with race and ethnicity.Among a total of 1706 survivors including 230 non-Hispanic Black survivors (median [IQR] age at diagnosis, 9.5 [4.3-14.3] years; 103 male [44.8%] and 127 female [55.2%]) and 1476 non-Hispanic White survivors (median [IQR] age at diagnosis, 9.3 [3.9-14.6] years; 766 male [51.9%] and 710 female [48.1%]), EAA was significantly greater among non-Hispanic Black survivors (ALSM = 1.41; 95% CI, 0.66 to 2.16) than non-Hispanic White survivors (ALSM = 0.47; 95% CI, 0.12 to 0.81). Among non-Hispanic Black survivors, EAA was significantly increased among those exposed to chest radiotherapy (ALSM = 2.82; 95% CI, 1.37 to 4.26) vs those unexposed (ALSM = 0.46; 95% CI, -0.60 to 1.51), among those exposed to alkylating agents (ALSM = 2.33; 95% CI, 1.21 to 3.45) vs those unexposed (ALSM = 0.95; 95% CI, -0.38 to 2.27), and among those exposed to epipodophyllotoxins (ALSM = 2.83; 95% CI, 1.27 to 4.40) vs those unexposed (ALSM = 0.44; 95% CI, -0.52 to 1.40). The association of EAA with epipodophyllotoxins differed by race and ethnicity (β for non-Hispanic Black survivors, 2.39 years; 95% CI, 0.74 to 4.04 years; β for non-Hispanic White survivors, 0.68; 95% CI, 0.05 to 1.31 years) and the difference was significant (1.77 years; 95% CI, 0.01 to 3.53 years; P for interaction = .049). Racial and ethnic disparities in EAA were mediated by educational attainment (