又一个打算用大数据预防疾病的项目——Google Baseline Study

　　根据华尔街日报的消息，谷歌在医疗方面又添一研究项目——Baseline Study，日后有可能是谷歌在医疗方面最重视也发力最大的项目之一。

　　这项技术最早是一位叫 Andrew Conrad 的分子生物学家的研究成果，为了找到便宜又大容量的测试，在志愿者的血清中检测 HIV 病毒。后来到了 2013 年 3 月，Conrad 正式加入Google X实验室，带着 70-100 个专家组成一个研究团队，其中不乏一些生理学、生物化学、光学、成像和分子生物学的专家。

　　这项技术与传统医疗方法有什么区别呢?

　　我想关键字是“早期”和“预防”。Baseline 会收集巨大的生物样本，主要是那些健康人群的基因与分子信息，至今为止总共搜集了 175 个标本，当标本基数越来越大，专家就可以用数据完整的描绘出一个健康人类。

　　跟疾病有什么关系呢?具体而言，谷歌会利用自己的大数据计算，找到每种疾病对应的标志，或者叫“biomarkers”，而缺少这种生物标志的人，就有患某一种病的可能。那么对于无法在早期诊断出的疾病，比如心脏病或者癌症，在未来就可以有效预防。而且这样的诊断方式再不会仅局限于某几种疾病，而是一次性帮助病患找到所有可能存在的问题。

　　不过从报道上来看，这项研究还处于探索阶段，专家们还在不断地搜集样本素材，最重要的是，如何能够准确的定义一个“健康的人”呢?连 Conrad 也承认，这项研究其实存在着巨大的未知数，因为人类的身体实在太复杂了，而且 DNA、酶、蛋白质之间的相互影响还有环境因素对人体的影响都要算进去。最后得到的所谓生物标志，不一定和某种疾病密切相关。

　　不知道是不是考虑到facebook情绪试验涉嫌隐私侵犯一事的影响，谷歌方面特别强调，所有的基因样本都来自匿名人群，而且数据只能用于医药研究，绝不会外泄。
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