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Pathogenesis and Novel Therapeutics in Breast Cancer

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Pathology, Diagnostics, and Therapeutics".

Deadline for manuscript submissions: 31 July 2024 | Viewed by 753

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Interests: implantation failure; pregnancy loss; pregnancy disorders; microbiome; immuno-oncology; HLA system in cancer
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Special Issue Information

Dear Colleagues,

In most industrialized countries breast cancer has become the most common form of cancer in women, with incidence rates continuing to rise. This represents an enormous challenge in diagnostics and clinical management, but also with respect to new treatment options. It is a challenge that also extends to basic science. The standards of treatment for breast cancer are now extremely high; clinical breast cancer treatment has played a pioneering role in many areas, e.g., neoadjuvant treatment, sentinel node biopsy, and breast-preserving, i.e., organ-conserving, procedures. In recent years, immunological treatment strategies, such as the use of antibodies against HER2/neu and receptor-targeted antibody strategies, have become well-established strands of breast cancer treatment.

New treatment strategies are also emerging, including CAR T-cell therapy. Furthermore, checkpoint inhibitor treatment is now regarded as an essential element in the treatment of specific breast cancer subentities, and new treatment strategies are in preparation in all areas; however, these are by no means the limits of knowledge concerning immunological treatment approaches. In fact, the link to hormonal regulation (comparisons of hormone-receptor-positive with hormone-receptor-negative carcinomas) is an amalgamation of two major control principles of the human organism, which is, as of now, not fully understood. The field of pure immunology likewise still poses many unanswered questions. This Special Issue thus aims to present further findings in the pathogenesis of breast cancer and evaluate new treatment strategies, whether immunological, hormonal, or new strategies in radio- and chemotherapy.

Prof. Dr. Wolfgang Würfel
Guest Editor

Manuscript Submission Information

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Published Papers (1 paper)

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Research

15 pages, 7872 KiB  
Article
Clinicopathological Significance of Cyclin-Dependent Kinase 2 (CDK2) in Ductal Carcinoma In Situ and Early-Stage Invasive Breast Cancers
by Ayat Lashen, Shatha Alqahtani, Ahmed Shoqafi, Mashael Algethami, Jennie N. Jeyapalan, Nigel P. Mongan, Emad A. Rakha and Srinivasan Madhusudan
Int. J. Mol. Sci. 2024, 25(9), 5053; https://doi.org/10.3390/ijms25095053 - 6 May 2024
Viewed by 441
Abstract
Cyclin-dependent kinase 2 (CDK2) is a key cell cycle regulator, with essential roles during G1/S transition. The clinicopathological significance of CDK2 in ductal carcinomas in situ (DCIS) and early-stage invasive breast cancers (BCs) remains largely unknown. Here, we evaluated CDK2’s protein expression in [...] Read more.
Cyclin-dependent kinase 2 (CDK2) is a key cell cycle regulator, with essential roles during G1/S transition. The clinicopathological significance of CDK2 in ductal carcinomas in situ (DCIS) and early-stage invasive breast cancers (BCs) remains largely unknown. Here, we evaluated CDK2’s protein expression in 479 BC samples and 216 DCIS specimens. Analysis of CDK2 transcripts was completed in the METABRIC cohort (n = 1980) and TCGA cohort (n = 1090), respectively. A high nuclear CDK2 protein expression was significantly associated with aggressive phenotypes, including a high tumour grade, lymph vascular invasion, a poor Nottingham prognostic index (all p-values < 0.0001), and shorter survival (p = 0.006), especially in luminal BC (p = 0.009). In p53-mutant BC, high nuclear CDK2 remained linked with worse survival (p = 0.01). In DCIS, high nuclear/low cytoplasmic co-expression showed significant association with a high tumour grade (p = 0.043), triple-negative and HER2-enriched molecular subtypes (p = 0.01), Comedo necrosis (p = 0.024), negative ER status (p = 0.004), negative PR status (p < 0.0001), and a high proliferation index (p < 0.0001). Tumours with high CDK2 transcripts were more likely to have higher expressions of genes involved in the cell cycle, homologous recombination, and p53 signaling. We provide compelling evidence that high CDK2 is a feature of aggressive breast cancers. The clinical evaluation of CDK2 inhibitors in early-stage BC patients will have a clinical impact. Full article
(This article belongs to the Special Issue Pathogenesis and Novel Therapeutics in Breast Cancer)
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