Radiology:转移性肾细胞癌化疗后有没有效如何看?

2020-12-07 shaosai MedSci原创

肿瘤灌注情况能够提示转移性肾细胞肾癌(RCC)经抗血管生成疗法后治疗反应与耐受。

背景

肿瘤灌注情况能够提示转移性肾细胞肾癌(RCC)经抗血管生成疗法后治疗反应与耐受。

目的

本研究旨在验证动脉自旋标记(ASL)MRI灌注变化是否与与转移性RCC经血管表皮生长因子(VEGFR)络氨酸激酶抑制剂(TKI)治疗后肿瘤反应及疾病进展具有相关性。

材料与方法

本前瞻性研究中,利用ASL MRI在舒尼替尼或帕唑帕尼治疗前后测量转移性RCC灌注指标。计算客观缓解率(ORR)和无进展生存期(PFS)。分别利用Wilcoxon等级秩和检验和Log等级检验在基线、2周、2个疗程治疗后、4个疗程治疗后和疾病进展时反应者和无反应者的灌注指标与ORR和PFS的相关性。

结果

共有17例患者(平均年龄, 59 years ± 7.0 [SD]; 11 例男性)接受舒尼替尼治疗,11例患者(平均年龄63 years ± 6.6 [SD]; 8例男性)接受帕唑帕尼的治疗。反应者基线灌注指标要高于无反应者 (平均为404 mL/100 g/min ± 213 vs 199 mL/100 g/min ± 136; P = .02)。自基线到第2周(-53 mL/100 g/min ± 31; P < .001)、2个疗程后(-65 mL/100 g/min ± 25; P < .001)、4个疗程后(-79 mL/100 g/min ± 15; P = .008)灌注降低。在上述3个时间点中灌注降低值与ORR ORR (分别P = .63, .29和 .27)或PFS(P = .28, .27和.32)均无相关性。治疗4个疗程后灌注升高与疾病进展具有相关性(51% ± 11; P < .001)。

结论

本研究表面自旋动脉标记灌注MRI可能有助于识别转移性肾细胞肾癌患者经表皮生长因子络氨酸激酶抑制剂治疗有反应的患者,也可能有助于早期识别疾病的早期进展。

 

原始出处:

Leo L Tsai,Rupal S Bhatt,Meaghan F Strob et al. Arterial Spin Labeled Perfusion MRI for the  Evaluation of Response to Tyrosine Kinase Inhibition Therapy in Metastatic Renal Cell Carcinoma. doi: 10.1148/radiol.2020201763.

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