JAMA Netw Open:血小板增多可增加肿瘤发生风险

2021-08-13 yd2015 MedSci原创

该回顾性研究表明,血小板增多可增加肿瘤的发生风险。对于不明原因的血小板升高,建议进行肿瘤筛查。

我们知道,新诊断的肿瘤患者常常伴有血小板增多,通常定义为血小板计数大于450 × 10 9 /L。有研究表明血小板在肿瘤发生发展中发挥一定作用,包括血管生成和转移。但是,血小板增多与肿瘤的发生之间的关系不明确。因此,来自加拿大的研究团队开展回顾性研究,评估两者的关系。相关结果发表在在JAMA Netw Open杂志上。

该研究纳入加拿大安大略省40-75岁居民有血常规记录,既往2年内血小板计数正常并且没有肿瘤病史。暴露人群定义为第一次血常规(CBC)诊断血小板增多 (>450 × 10 9 platelets/L)。计算诊断血小板增多后5年肿瘤发病率。血小板增多发生所有肿瘤和特定位置肿瘤的绝对以及相对危险度。

3386716居民有CBC记录,其中53339例(1.6%)血小板增多(37349[70.0%]为女性和15990[30.0%]为男性)纳入研究。中位年龄为59.7岁(范围,50.2-67.4岁)。血小板增多的中位血小板计数为510 × 10 9 /L(range, 451-2010 × 10 9 /L)。

按入匹配研究的51624例血小板增多症患者中,2年随访期间 2844 (5.5%)例诊断肿瘤,5年随访期间3869 (7.5%)例诊断肿瘤。血小板增多患者中2年内7.1% (95% CI, 6.6%-7.5%)男性以及 4.9% (95% CI, 4.6%-5.1%)女性发生实体肿瘤。40-49岁,50-59岁和60-75岁的风险分别为1.9%(95%CI,1.7%-2.2%), 4.5%(95%CI,4.1%-4.8%)和7.8%(95%CI,7.5%-8.2%)。而血小板增多患者中2年内 2.1% (95% CI, 1.9%-2.3%)男性以及1.2%(95%CI,1.1%-1.3%)女性发生血液肿瘤。

            不同部位肿瘤发生风险1

5年随访期间,发生血液肿瘤的相对风险(RR)为4.03(95%CI,3.73-4.35);发生任何实体肿瘤的RR为1.88(95%CI,1.82-1.95),最初2年的RR为2.67(95%CI,2.56-2.79)。

                不同部位肿瘤发生风险2

2年发生肿瘤的相对风险(RR)为2.67(95%CI,2.56-2.79)。不同部位肿瘤的相对风险为:卵巢(RR,7.11;95%CI,5.59-9.03),胃(RR,5.53;95%CI,4.12-7.41), 结肠(RR,5.41;95%CI,4.80-6.10), 肺(RR,4.41;95%CI,4.02-4.85), 肾(RR,3.64;95%CI,2.94-4.51),和食管(RR,3.64;95%CI,2.46-5.40)。

                  不同部位肿瘤发生风险3

胰腺肿瘤最初6个月的RR为3.75(95%CI2.58-5.45),但是6个月至5年之间的RR下降,为1.34(95%CI,1.01-1.78)。而食管肿瘤最初6个月的RR为9.12(95%CI,5.05-16.47),但是6个月至5年之间的RR下降,为1.49(95%CI,0.95-2.35)。

综上,该回顾性研究表明,血小板增多可增加肿瘤的发生风险。对于不明原因的血小板升高,建议进行肿瘤筛查。

原始出处:

Giannakeas V, Narod SA. Incidence of Cancer Among Adults With Thrombocytosis in Ontario, Canada. JAMA Netw Open. 2021 Aug 2;4(8):e2120633. doi: 10.1001/jamanetworkopen.2021.20633. PMID: 34383058.

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    2022-07-08 canlab
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    2022-02-20 feather89
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    2021-08-15 寒冰煞雪

    血小板增多建议筛查

    0

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    2021-08-14 JZ Yang

    血小板增多,学习了

    0

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    2021-08-13 旺医

    顶刊就是顶刊,谢谢梅斯带来这么高水平的研究报道,我们科里同事经常看梅斯,分享梅斯上的信息

    0

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超过30%的恶性实体肿瘤患者存在血小板增多症,且与患者较差的生存率相关。肿瘤细胞可与包括血小板在内的肿瘤微环境中各种细胞成分相互作用,这是肿瘤生长和转移的关键。虽然已知血小板能渗入肿瘤组织,分泌促血管生成和促瘤因子,从而增加肿瘤的生长,但是血小板和转移癌细胞之间确切的分子机制还不是很清楚。本研究中,研究人员发现,体外血小板诱导的抗失巢凋亡是体内癌细胞转移的关键。进一步的研究表明,血小板激活RhoA