彭洋 http://pf.39.net/bdfyy/bdfhl/210721/9213495.htmlCAR-T治疗最终的价值,是让患者获得持续缓解/治愈,回归正常的工作和生活。本期我们通过一个患者的经历,探索CAR-T治疗的真正价值。
“你CR(完全缓解)了吗?”
这句话在外人听来可能觉得一头雾水,而在淋巴瘤病友之间,这句话是心照不宣的问候也是通往新生活的“暗号”。
点击边框调出视频工具条amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;nbsp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;lt;mpchecktextcontenteditable=amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;quot;falseamp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;quot;id=amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;quot;8_0.amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;quot;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;gt;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;lt;/mpchecktextamp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;gt;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;lt;mpchecktextcontenteditable=amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;quot;falseamp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;quot;id=amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;a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对于弥漫大B细胞淋巴瘤(DLBCL)患者小郭来说,“CR”他等了太久,在不到两年的时间里,他经历了化疗、移植、复发、放疗再次复发。在疾病面前,人就像漂在海上的船,不知道何时会被巨浪抛起,何时又能靠岸。
这种忐忑、迷茫、困惑的心情,一直持续到小郭见到上海交通大医院(医院)血液科赵维莅教授,“不要放弃,我肯定会收治你”,赵维莅教授对那时已经经历了二次复发的小郭坚定地说道。
“CAR-T(嵌合抗原受体T细胞免疫疗法)”是赵维莅教授对小郭的病情给出的答案,而在当时CAR-T治疗作为全新的治疗手段充斥着不确定性,却也代表着全新希望。年7月,小郭正式入组了赵维莅教授团队靶向CD19CAR-T产品瑞基奥仑赛注射液的临床试验,接受了详尽且针对性的治疗方案,并在医护人员的守护下成功“闯关”。
一个月后,小郭出院;三年过去,小郭依然保持着CR状态,意味着小郭向完全治愈又迈出了新的一步。
复发!复发!——
DLBCL患者生命不可承受之重
“当时小郭的情况是比较严重的,经历了两次复发,肺部、腹腔都有巨大的肿块,意味着小郭疾病负荷很高。当时我们(医院血液科)也是刚刚启动了CAR-T治疗,对于小郭这样多线治疗失败的年轻淋巴瘤患者,我们临床医生还是要尽全力为他创造一个治疗的机会。”赵维莅教授回忆道。
复发/难治(R/R)是每一个血液肿瘤患者都不愿面对的困境,也是患者长期生存的“分水岭”——一旦进入R/R状态,治疗手段的选择逐渐减少,生存希望也不容乐观。
“B细胞淋巴瘤患者经过标准的R-CHOP治疗,大概50%-60%的患者能够达到CR,但仍有40%-50%的患者会进入R/R的状态,此时临床上可供选择的治疗手段还有大剂量化疗以及自体干细胞移植,15%-30%的患者能够达到CR。
但始终无法通过传统治疗手段达到CR的R/RDLBCL患者该何去何从——标准三线方案的‘空白’,也是这部分患者未被满足的治疗需求缺口。”医院血液科闫子勋医生介绍道。
“第一个吃螃蟹的人”——
CAR-T细胞治疗带来革命性疗效突破
“当时我已经连续一个月低热,肾脏也血肿得厉害。这种情况下,医生要是肯收治我,也是最大的意外了!”小郭当时在医院就诊时,已经虚弱到无法自己行走,只能靠轮椅活动,医院血液科对小郭来说是能够守住生命的最后关口。“当时我能看到小郭眼中非常强烈的求生欲望,再加上我们作为医生救死扶伤的责任和初心,所以我们最后还是义无反顾地收治了他。”医院血液科王黎教授谈到。
随即,小郭在医院进行了自身淋巴细胞采集,因肿瘤进展太快,又增加桥接化疗以降低肿瘤负荷,随即依照计划进行清淋化疗和细胞回输等治疗,并顺利闯过了CAR-T免疫治疗的不良反应——细胞回输后的体内细胞因子风暴(CRS)的发作期。
细胞免疫治疗是近年来癌症治疗领域的新方向,小郭所接受的CAR-T疗法就是其中一种,其原理是应用患者自身的T淋巴细胞,经过重新改造,装载“导航”并增加威力后再次输入患者体内,从而识别并攻击自身的肿瘤细胞。
图1小郭所接受的瑞基奥仑赛注射液制备、回输流程
CRS,在CAR-T治疗诞生之初就是备受临床医生