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Biospecimen Use in Cancer Research Over Two Decades

机译:生物样本在两个十年的癌症研究中的应用

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Demand for biospecimens in cancer research has increased but there are relatively few data on the trends in biospecimen usage. These data are needed to enable projection of future demand. We analyzed biospecimen usage in publications published at five-year intervals (2008, 2003, 1998, 1993, and 1988) in four cancer research journals (Cancer Research, Clinical Cancer Research, British Journal of Cancer and International Journal of Cancer). We categorized publications in three ways: 1) biospecimen utilization yeso; 2) biospecimen cohort size; and 3) format of biospecimens used including frozen tissue, Formalin-Fixed Paraffin-Embedded (FFPE) tissue, fresh tissue, fluids, and hematological biospecimens. Biospecimens were used in 1292/3307 (39%) of publications analyzed and sufficient information was available to further classify biospecimen usage in 1228 publications. The proportion of publications in each journal using biospecimens ranged from 23% to 61% between journals, with no significant change within each journal over time. A more detailed review of tissue biospecimen use showed a significant increase in cohort sizes from 1988 to 2008 (mean 52 to 198, respectively; P<0.0001). This reflected increased cohort sizes for both frozen and FFPE tissues from 1993 to 2008 (frozen, 59 to 119; FFPE, 66 to 194) but not fresh tissues. The relative proportion of studies using frozen or fresh tissues alone has decreased (71% to 24%) while those using FFPE alone or combined FFPE/frozen tissue cohorts has increased (24% to 72%) over this period. We conclude that the overall demand for biospecimens in cancer research has increased significantly (almost fourfold) over the past 20 years. We predict that average cohort sizes will increase by at least twofold for frozen and FFPE biospecimens over the next ten years, and that the majority of studies will be based on FFPE tissues or combined FFPE/Frozen tissue cohorts.
机译:癌症研究中对生物标本的需求已经增加,但是有关生物标本使用趋势的数据相对较少。需要这些数据才能预测未来需求。我们分析了以五年为间隔(2008年,2003年,1998年,1993年和1988年)在四种癌症研究期刊(癌症研究,临床癌症研究,英国癌症杂志和国际癌症杂志)上发表的出版物中的生物样本使用情况。我们以三种方式对出版物进行分类:1)生物样本利用是/否; 2)生物样本队列规模; 3)所用生物标本的格式,包括冷冻组织,福尔马林固定石蜡包埋(FFPE)组织,新鲜组织,液体和血液生物标本。生物标本用于分析的1292/3307(39%)出版物中,并且有足够的信息可用于进一步分类1228出版物中的生物标本使用情况。每种期刊之间使用生物标本的出版物比例在23%至61%之间,随着时间的推移,每种期刊内的变化均不显着。对组织生物样本使用的更详细审查显示,从1988年至2008年,队列规模显着增加(分别为52至198; P <0.0001)。这反映了从1993年到2008年,冷冻和FFPE组织的队列规模都增加了(冻结,59到119; FFPE,66到194),但是新鲜组织却没有。在此期间,仅使用冷冻或新鲜组织的研究的相对比例下降了(71%至24%),而仅使用FFPE或组合FFPE /冷冻组织队列的研究的相对比例有所增加(24%至72%)。我们得出的结论是,在过去的20年中,癌症研究对生物样本的总体需求已显着增加(几乎增加了四倍)。我们预测,在未来十年中,冷冻和FFPE生物样本的平均队列规模将至少增加两倍,并且大多数研究将基于FFPE组织或FFPE /冷冻组织队列的组合。

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