2018年6月7日 訊 /生物谷BIOON/ --近日,在華盛頓召開(kāi)的2018年消化性疾病周會(huì)議上,來(lái)自梅奧診所的研究人員發(fā)表了他們最新的研究成果,如今他們已經(jīng)完成了II期臨床試驗(yàn),即比較一組DNA標(biāo)志物和α甲胎蛋白是否能作為一種新方法來(lái)檢測(cè)肝癌。

圖片來(lái)源:secondopinionnewsletter.com
醫(yī)學(xué)博士John Kisiel表示,目前我們利用超聲和血液蛋白標(biāo)志物—α甲胎蛋白來(lái)檢測(cè)肝癌患者,但很不幸的是,這些檢測(cè)手段并不能敏感地監(jiān)測(cè)一些可治愈的晚期肝癌,而且大部分需要接受這種檢測(cè)的患者經(jīng)常無(wú)法獲得有效的檢測(cè)信息,從而耽誤疾病的治療。
這項(xiàng)研究中,研究者Kisiel及其同事就利用一種異常的DNA標(biāo)志物開(kāi)發(fā)出了一種簡(jiǎn)單的血液檢測(cè)手段,這種異常的DNA標(biāo)志物存在于肝癌組織中,研究人員通過(guò)研究證實(shí),這些異常的DNA標(biāo)志物在絕大多數(shù)原發(fā)性肝癌患者的血液樣本中都存在。同時(shí)這些標(biāo)志物在健康個(gè)體以及肝硬化個(gè)體(隨訪過(guò)程中并未發(fā)現(xiàn)患者機(jī)體中存在肝臟腫瘤)機(jī)體中并不存在。
研究者表示,我們非常激動(dòng),因?yàn)槲覀兯l(fā)現(xiàn)的DNA標(biāo)志物能夠幫助我們檢測(cè)90%以上的可治愈階段的腫瘤患者,這也就是為何我們認(rèn)為DNA檢測(cè)手段與當(dāng)前的可用的檢測(cè)手段不同的主要原因了;下一步研究者將在更大規(guī)模的患者群體中進(jìn)行研究來(lái)驗(yàn)證這些DNA標(biāo)志物。
據(jù)美國(guó)國(guó)家癌癥研究所數(shù)據(jù)顯示,美國(guó)每年新發(fā)肝癌和膽管癌患者的數(shù)量為8.8/10萬(wàn),而且肝癌是肝硬化或乙肝患者死亡的主要原因,在全球范圍內(nèi)肝癌也是引發(fā)人群因癌癥死亡第二大原因,因此研究人員還希望后期進(jìn)行更為深入的研究開(kāi)發(fā)出能有效檢測(cè)肝癌的新型技術(shù)或手段。(生物谷Bioon.com)
原始出處:
A step closer to developing a DNA test for liver cancer
A group of researchers from Mayo Clinic and Exact Sciences Corporation have completed a phase II study comparing a set of DNA markers to alpha fetoprotein as a method to test for liver cancer. The researchers presented their findings today at the 2018 Digestive Disease Week conference in Washington, D.C.
"We currently test for liver cancer using ultrasound and a blood protein marker called alpha fetoprotein," says John Kisiel, M.D., a gastroenterologist at Mayo Clinic. "Unfortunately, these tests are not very sensitive for curable stage liver cancers, and most patients who need this testing do not have it easily available or [are] not able to receive it often enough to be effective."
Dr. Kisiel and his colleagues developed a simple blood test using abnormal DNA markers that are known to exist in liver cancer tissues. They were able to confirm that the abnormal DNA markers were present in the overwhelming majority of blood samples that came from people with primary liver cancers. Simultaneously, these markers were absent in healthy individuals and individuals with cirrhosis of the liver but no evidence of tumors on their clinical follow-up.
來(lái)源:丁香通