We previously described a divergent clinical and molecular presentation of hepatocellular carcinoma (HCC) in Peru. The present study aimed to further characterize the tissue features associated with this singular nosological form of HCC in order to gain insight into the natural history of the disease. We performed an exploratory analysis of the histology of both tumor and non-tumor liver (NTL) tissues from 50 Peruvian HCC patients, and compared with that of 75 individuals with non-HCC liver tumor or benign liver lesions as a baseline for NTL features. We complemented this approach with a transcriptome analysis in a subset of NTL tissue samples and also performed an ultra-sensitive hepatitis B virus (HBV) detection in liver tissues of the patients. Overall, results highlighted the low rate of liver parenchymal alterations in a young patient cohort (median age: 40 years old), despite a strong prevalence of underlying HBV infection (c. 67%). Withal, liver clear cell foci of cellular alteration were genuinely associated with HCC and appended to some changes in immune and G protein-coupled receptor gene expression ontologies. Our findings confirm the occurrence of a particular setting of HCC in South America, a region where the pathophysiology of liver cancer remains largely unexplored.

译文

:我们之前在秘鲁描述了肝细胞癌(HCC)的不同临床表现和分子表现。本研究旨在进一步表征与这种单一的肝癌病原学形式相关的组织特征,以便深入了解该疾病的自然病史。我们对50例秘鲁HCC患者的肿瘤和非肿瘤肝(NTL)组织的组织学进行了探索性分析,并将其与75例非HCC肝肿瘤或良性肝病患者的NTL特征基线进行了比较。我们在一部分NTL组织样本中通过转录组分析对这种方法进行了补充,并且还在患者的肝组织中进行了超灵敏的乙型肝炎病毒(HBV)检测。总体而言,结果表明,尽管潜在的HBV感染率很高(约67%),但在年轻患者队列(中位年龄:40岁)中,肝实质改变的发生率较低。肝透明细胞病变的细胞真正与肝癌相关,并伴随着免疫和G蛋白偶联受体基因表达本体的某些变化。我们的研究结果证实了南美肝癌的特殊背景,肝癌的病理生理学在很大程度上尚待探索。

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