Journal of Pathology and Translational Medicine

Original Articles

Histopathologic classification and immunohistochemical features of papillary renal neoplasm with potential therapeutic targets: Jeong Hwan Park, Su-Jin Shin, Hyun-Jung Kim, Sohee Oh, Yong Mee Cho; J Pathol Transl Med. 2024;58(6):321-330. Published online September 12, 2024; DOI: https://doi.org/10.4132/jptm.2024.07.31

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Background
Papillary renal cell carcinoma (pRCC) is the second most common histological subtype of renal cell carcinoma and is considered a morphologically and molecularly heterogeneous tumor. Accurate classification and assessment of the immunohistochemical features of possible therapeutic targets are needed for precise patient care. We aimed to evaluate immunohistochemical features and possible therapeutic targets of papillary renal neoplasms
Methods
We collected 140 papillary renal neoplasms from three different hospitals and conducted immunohistochemical studies on tissue microarray slides. We performed succinate dehydrogenase B, fumarate hydratase, and transcription factor E3 immunohistochemical studies for differential diagnosis and re-classified five cases (3.6%) of papillary renal neoplasms. In addition, we conducted c-MET, p16, c-Myc, Ki-67, p53, and stimulator of interferon genes (STING) immunohistochemical studies to evaluate their pathogenesis and value for therapeutic targets.
Results
We found that c-MET expression was more common in pRCC (classic) (p = .021) among papillary renal neoplasms and Ki-67 proliferation index was higher in pRCC (not otherwise specified, NOS) compared to that of pRCC (classic) and papillary neoplasm with reverse polarity (marginal significance, p = .080). Small subsets of cases with p16 block positivity (4.5%) (pRCC [NOS] only) and c-Myc expression (7.1%) (pRCC [classic] only) were found. Also, there were some cases showing STING expression and those cases were associated with increased Ki-67 proliferation index (marginal significance, p = .063).
Conclusions
Our findings suggested that there are subsets of pRCC with c-MET, p16, c-MYC, and STING expression and those cases could be potential candidates for targeted therapy.

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Tissue-Based Biomarkers Important for Prognostication and Management of Genitourinary Tumors, Including Surrogate Markers of Genomic Alterations
Leonie Beauchamp, Shreeya Indulkar, Eric Erak, Mohammad Salimian, Andres Matoso
Surgical Pathology Clinics.2025; 18(1): 175. CrossRef

The Expression of Adipophilin Is Frequently Found in Solid Subtype Adenocarcinoma and Is Associated with Adverse Outcomes in Lung Adenocarcinoma: Sun Ah Shin, Hee Young Na, Ji Young Choe, Doohyun Chung, Mira Park, Sohee Oh, Ji Eun Kim; J Pathol Transl Med. 2018;52(6):357-362. Published online October 4, 2018; DOI: https://doi.org/10.4132/jptm.2018.09.13

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Abstract PDF

Background
The up-regulation of the lipogenic pathway has been reported in many types of malignant tumors. However, its pathogenic role or clinical significance is not fully understood. The objective of this study was to examine the expression levels of adipophilin and related hypoxic signaling proteins and to determine their prognostic impacts and associations with the pathologic characteristics of lung adenocarcinoma.
Methods
Expression levels of adipophilin, heat shock protein 27 (HSP27), carbonic anhydrase IX, and hypoxia-inducible factor 1α were examined by immunohistochemical staining using tissue microarray blocks. Correlations between protein expression levels and various clinicopathologic features were analyzed.
Results
A total of 230 cases of primary adenocarcinoma of the lung were enrolled in this study. Adipophilin expression was more frequent in males and with the solid histologic type. It was correlated with HSP27 expression. Patients with adipophilin-positive adenocarcinoma showed a shorter progression-free survival (PFS) (median PFS, 17.2 months vs 18.4 months) in a univariable survival analysis, whereas HSP27 positivity correlated with favorable overall survival (OS) and PFS. In a multivariable analysis, adipophilin and HSP27 were independent prognostic markers of both OS and PFS.
Conclusions
Activated lipid metabolism and the hypoxic signaling pathway might play a major role in the progression of lung adenocarcinoma, especially in the solid histologic type.

Citations

Citations to this article as recorded by

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Kengo Kawaguchi, Kenichi Kohashi, Taro Mori, Hidetaka Yamamoto, Takeshi Iwasaki, Izumi Kinoshita, Yosuke Susuki, Hiroshi Furukawa, Makoto Endo, Yoshihiro Matsumoto, Yasuharu Nakashima, Yoshinao Oda
Journal of Clinical Pathology.2024; 77(10): 676. CrossRef
Prognostic and clinicopathologic significance of PLIN2 in cancers: A systematic review with meta-analysis
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The International Journal of Biological Markers.2023; 38(1): 3. CrossRef
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The Journal of Pathology.2023; 260(2): 203. CrossRef
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Virchows Archiv.2020; 477(2): 291. CrossRef

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