Keiko Yanagihara^1,*, Masato Yoshida², Kensaku Awaji², Tamami Yamakawa¹, Sena Kato¹, Miki Tamura¹, Koji Nagata³

Oncology Research, Vol.34, No.1, 2026, DOI:10.32604/or.2025.073891 - 30 December 2025

Abstract Background: Cyclin-dependent kinase 4/6 (CDK4/6) inhibitors have transformed the management of hormone receptor–positive/HER2–negative (HR+/HER2–) advanced breast cancer, yet evidence for elderly or poor-performance patients remains limited. This study examined real-world outcomes of palbociclib plus endocrine therapy in Asian patients, with additional subgroup analyses by age and performance status. Methods: We retrospectively analyzed 46 consecutive Asian patients with recurrent or de novo HR+/HER2− breast cancer treated with first-line palbociclib plus ET between April 2021 and March 2025. The primary endpoint was progression-free survival (PFS). Secondary endpoints included overall response rate (ORR), disease control rate (DCR), and safety.… More >

Yuri A. Piven¹, Danila V. Sorokin², Nastassia A. Varabyeva¹, Alexandra L. Mikhaylova², Fedor B. Bogdanov², Elena V. Shafranovskaya¹, Raman M. Puzanau³, Fedor A. Lakhvich¹, Alexander M. Scherbakov^2,4,*

Oncology Research, Vol.33, No.12, pp. 4049-4072, 2025, DOI:10.32604/or.2025.067832 - 27 November 2025

Abstract Background: The most aggressive forms of breast cancer are characterized by independence from steroid hormones but a strong dependence on growth factors. In such cancer cells, oncogenic receptors, including human epidermal growth factor receptor 2 (HER2), are activated, and their targeted inhibition represents an attractive therapeutic strategy. The study aimed to develop small-molecule potential dual heat shock protein 90 (HSP90)-HER2 inhibitors and evaluate them as anticancer agents in HER2-positive cells. Methods: The research project involved obtaining a series of compounds with potential dual inhibitory activity against HSP90 and HER2 by targeted organic synthesis, which was… More > Graphic Abstract

Tian-Tian Li^1,2,3,#, Ming-Yao Meng^1,2,4,#, Zheng Yu⁵, Yang-Fan Guo^1,2,4, Yi-Yi Zhao^1,2,4, Hui Gao^1,2,4, Li-Li Yang^1,2,3, Li-Rong Yang^1,2,3, Meng-Yuan Chu^1,2,3, Shan He^1,2,4, Yuan Liu^1,2,4, Xiao-Dan Wang^1,2,4, Wen-Ju Wang^1,2,4, Zong-Liu Hou^1,2,4, Li-Wei Liao^1,2,4,*, Lin Li^1,2,4,*

Oncology Research, Vol.33, No.11, pp. 3447-3467, 2025, DOI:10.32604/or.2025.065394 - 22 October 2025

Abstract Background: Chimeric antigen receptor T (CAR-T) cell therapies have demonstrated significant clinical efficacy in hematological malignancies. However, their application to solid tumors remains substantially limited by multiple challenges, including the risk of off-target effects. Hence, optimizing CAR-T cells for stronger antigen binding is essential. Methods: In this study, we employed a classical anti-human endothelial growth factor receptor 2 (HER2) single-chain variable fragment (scFv) derived from trastuzumab, alongside an anti-HER2-13 scFv identified from a combinatorial cellular CAR library, for the construction of a third-generation CAR-T cell. Meanwhile, the phenotypes and both in vitro and in vivo functions of… More > Graphic Abstract

Prin Sungwan¹, Jutatip Panaampon^1,2, Ratchaneewan Sumankan^1,3, Genki Aoki¹, Seiji Okada^1,*

Oncology Research, Vol.33, No.9, pp. 2279-2307, 2025, DOI:10.32604/or.2025.065319 - 28 August 2025

Abstract Cholangiocarcinoma (CCA) is a fatal bile duct malignancy. CCA is intrinsically resistant to standard chemotherapy, responds poorly to it, and has a poor prognosis. Effective treatments for cholangiocarcinoma remain elusive, and a breakthrough in CCA treatment is still awaited. The human epidermal growth factor receptor 2 (HER2) plays an oncogenic role by promoting an aggressive cancer phenotype through multiple pathways. While HER2 has shown increasing potential as an effective target for breast and gastric cancers over the last decade, this has not been the case for CCA. This review explores the possibility of targeting HER2 More > Graphic Abstract

Xizhou Zhang^1,#, Zetao Zhang^1,#, Jianguang Lin², Jiarong Yi³, Xuxiazi Zou³, Jikun Feng³, Guangsheng Huang¹, Bingfeng Chen¹, Junxi Long¹, Fengjia Wu³, Feng Ye^3,*, Haoming Wu^1,*

Oncology Research, Vol.33, No.9, pp. 2529-2547, 2025, DOI:10.32604/or.2025.065029 - 28 August 2025

Abstract Background: Breast cancer remains a leading cause of morbidity and mortality among women worldwide, with significant geographic disparities in its impact. While human epidermal growth factor receptor 2 (HER2)-targeted therapies, such as trastuzumab, have improved outcomes for HER2-positive breast cancer, challenges like therapy resistance persist, highlighting the need for novel treatments. Recent developments in antibody-drug conjugates (ADCs), particularly disitamab vedotin (RC48), show promising efficacy in targeting both HER2-positive and HER2-low expression tumors, warranting further investigation through real-world studies to assess its broader clinical applicability. Method: This retrospective, multicenter observational study evaluated the real-world efficacy and… More >

YUZHI LIU^1,#, EVELYNE BISCHOF^2,#, ZHIQIN CHEN¹, JIAHUAN ZHOU³, BEI ZHANG⁴, DING ZHANG⁴, YONG GAO^1,*, MING QUAN^1,*

Oncology Research, Vol.32, No.9, pp. 1429-1438, 2024, DOI:10.32604/or.2024.047309 - 23 August 2024

Abstract Objectives: Human epidermal growth factor receptor 2 (HER2)-targeted therapies have demonstrated potential benefits for metastatic colorectal cancer (mCRC) patients with HER2 amplification, but are not satisfactory in cases of HER2 mutant CRCs. Methods: Consequently, further elucidation of amplifications and somatic mutations in erythroblastic oncogene B-2 (ERBB2) is imperative. Comprehensive genomic profiling was conducted on 2454 Chinese CRC cases to evaluate genomic alterations in 733 cancer-related genes, tumor mutational burden, microsatellite instability, and programmed death ligand 1 (PD-L1) expression. Results: Among 2454 CRC patients, 85 cases (3.46%) exhibited ERBB2 amplification, and 55 cases (2.24%) carried ERBB2 mutation.… More > Graphic Abstract

MESFER AL SHAHRANI, REEM GAHTANI, MOHAMMAD ABOHASSAN, MOHAMMAD ALSHAHRANI, YASSER ALRAEY, AYED DERA, MOHAMMAD RAJEH ASIRI, PRASANNA RAJAGOPALAN^*

Oncology Research, Vol.32, No.2, pp. 251-259, 2024, DOI:10.32604/or.2023.043139 - 28 December 2023

Abstract Gastric cancers are caused primarily due to the activation and amplification of the EGFR or HER2 kinases resulting in cell proliferation, adhesion, angiogenesis, and metastasis. Conventional therapies are ineffective due to the intra-tumoral heterogeneity and concomitant genetic mutations. Hence, dual inhibition strategies are recommended to increase potency and reduce cytotoxicity. In this study, we have conducted computational high-throughput screening of the ChemBridge library followed by in vitro assays and identified novel selective inhibitors that have a dual impediment of EGFR/HER2 kinase activities. Diversity-based High-throughput Virtual Screening (D-HTVS) was used to screen the whole ChemBridge small molecular… More > Graphic Abstract

Keiichi Kontani^1,*, Kana Kuraishi¹, Shin-ichiro Hashimoto¹, Shoko Norimura², Nozomi Hashimoto¹, Masahiro Ohtani³, Naomi Fujiwara-Honjo⁴, Manabu Date⁵, Koji Teramoto⁶, Hiroyasu Yokomise¹

Oncologie, Vol.23, No.2, pp. 229-239, 2021, DOI:10.32604/Oncologie.2021.016277 - 22 June 2021

Abstract The prognosis of patients with human epidermal growth factor receptor-2 (HER2)-overexpressed metastatic breast cancer (MBC) has improved drastically following the development of anti-HER2 therapies. We question what factors are involved in the improved outcome by the treatment. One hundred and two MBC patients who received chemotherapy were classified into groups according to breast cancer subtype: luminal/HER2-negative (n = 50), HER2 (n = 26), and triple-negative subtypes (n = 26). Clinicopathologic features and clinical outcomes of the groups were compared. Disease-free intervals in the triple-negative group were significantly shorter than those in the other two groups.… More >

YANFEI LI¹, LULU DAI², KE CAI², YINGKUI SONG², XIQING LIU^3,*

BIOCELL, Vol.45, No.3, pp. 685-694, 2021, DOI:10.32604/biocell.2021.013612 - 03 March 2021

Abstract RPA3 (Replication Protein A3) (14 kD) is a part of the canonical heterotrimeric replication protein A complex (RPA/RP-A). This study aimed to explore the functional role of RPA3 and the mechanisms of its dysregulation in breast cancer. Data from the Cancer Genome Atlas (TCGA)-breast cancer patients and GSE75688 were utilized for gene expression and survival analysis. Breast cancer cell lines MDA-MB-231 and SK-BR-3 were used for in-vitro cell studies. Clonogenic assay and immunofluorescent staining of γ-H2AX were performed to examine radiation-induced cytotoxicity. Systemic correlation analysis was performed to identify potential transcription factors (TFs) regulating RPA3… More >

ZHIXIONG WANG^1,2, NA RISU², JIAYU FU², HUI LIU³, GUOMIN ZHOU³, QIAN LIU³, YAN ZOU⁴, JIAXING TANG⁴, LONG LI⁴, XUEKAI ZHU^4,*

BIOCELL, Vol.45, No.1, pp. 157-165, 2021, DOI:10.32604/biocell.2021.010261 - 26 January 2021

Abstract Chimeric antigen receptor (CAR) T-cell therapy is mostly limited to hematological malignancies and has a poor effect on solid tumors. CAR T cells as a kind of immune cell may be affected by some immunomodulatory drugs such as pomalidomide, so the use of pomalidomide may improve the effect of CAR T cells on solid tumors. In this study, CD133- or HER2-specific CAR T cells were chosen to investigate whether pomalidomide can regulate the function of CAR T cells in vitro. We found that pomalidomide can significantly enhance the ability of CD133-CAR T cells and HER2-CAR T More >