View clinical trials related to Breast Neoplasms.
Filter by:This study assesses changes to the immune cells following hypofractionated radiation-induced DNA damage in breast cancer patients. Radiation therapy may cause immune cells to enter tumors and target cancer cells. The goal of this study is to measure the change in the level of immune cells in the tumor before and after radiation therapy.
Androgen Receptor is extensively expressed in BRCA and its role in the disease may differ depending upon molecular subtypes and stages. Androgen Receptor (AR) may act as an antagonist of estrogen receptor α (ERα), in ERα induced effect, whereas in the absence of estrogens, AR may act as an agonist, of ERα- promoting tumor. Thus, depending on the BRCA micro-environment, both agonists and antagonists of the AR have been suggested for therapeutic approaches.
Initially described in 2009 on LGR5 positive stem cells from intestine, organoids correspond to a 3D cell culture that preserves the organization and part of the initial function of the organ from which the cells were derived. They use the proliferation and differentiation properties of stem cells cultured in a three-dimensional matrix. These principles have been adapted to many human organs, including the breast. These culture conditions have thus allowed the establishment of cancer organoid lines that have the advantages of rapid amplification, a high rate of establishment success and unlimited proliferation potential. They are transfectable and cryopreservable. They are very close morphologically and genetically to the tumor from which they derive. Very recently, the in vivo response of orthotopic xenograft models of breast cancer organoids has been correlated to the in vitro response of these same organoids. In addition, the in vitro response of various of these models to PARP inhibitors was linked to the presence of the BRCA1/2 mutant signature, highlighting the potential of these models to predict patient response to these treatments. Furthermore, one study demonstrated the value of using organoids derived from metastatic gastrointestinal tumors to predict patient response to cancer treatments (100% sensitivity, 93% specificity, 88% positive predictive value, and 100% negative predictive value.
The best prognostic factor following neoadjuvant chemotherapy is the pathological complete response (pCR). pCR is defined as the absence of invading cells in the breast and lymph nodes following neoadjuvant chemotherapy treatment. Since patients with pCR have a better prognosis than those without pCR, some studies have evaluated different methods to predict pCR early in treatment. Thus, patients who do not respond optimally to treatment could be identified early and changed treatment in order to maximize the chances of pCR and avoid the morbidity of poorly effective treatments. To do this, several modalities have been proposed, including MRI, mammography, ultrasound, positron emission tomography, elastography, and serial biopsies, but these techniques have shown predictive and sometimes expensive. Nevertheless, assessment of tumor response after cycle 2 has been suggested to be appropriate for the prediction of pCR. The main objective of this study is to compare the performance of two diagnostic modalities, namely CESM and MRI, in the evaluation of the response of a malignant breast tumor to neoadjuvant chemotherapy and the prediction of pCR. The radiological response will also be compared to the clinical response.
To evaluate the efficacy of Eribulin in Combination With Anti-PD-1 Antibody in Patients With Metastatic Triple-Negative Breast Cancer.
Breast cancer patients who had undergone surgery, chemotherapy and radiotherapy suffered from complications, including shoulder stiffness, lymphedema and scar contracture. These symptoms impaired one's ADL function. Rehabilitation may relieved symptoms. However, it is difficult to estimate how long one should receive rehabilitation. The study is trying to establish a machine-learning based model in order to predict the period of rehabilitation.
Neoadjuvant therapy for HR+/HER2- breast cancer is dominated by anthracycline combined with paclitaxel chemotherapy. Aggressive neoadjuvant chemotherapy can only achieve pCR in about 10% of PATIENTS with HR-positive breast cancer. The emergence of new targeted drugs brings new life and hope to HR-positive breast cancer patients.Basic studies have shown that the abnormal state of epigenetics is associated with the metastasis of drug resistance and recurrence of tumor histone deacetylase (HDAC) is an important regulator of epigenetic regulation, and drugs targeting HDAC provide a new strategy for tumor therapy. The ACE study suggests that selective HDAC inhibitor chidamide in combination with endocrine therapy significantly improves survival benefit in patients with hr-positive HER2-negative advanced breast cancer who relapsed or progressed after endocrine therapy, providing a new treatment option for these patients.In conclusion, we hypothesize that neoadjuvant therapy with chidamide combination therapy provides a better strategy for patients with HR + /HER2 - breast adenocarcinoma.
This is a retrospective, multicenter, observational study in Japan by medical record review of advanced breast cancer (ABC) patients who have received palbociclib plus endocrine therapy (ET) as first line or second line setting. For the purposes of this study, analyses will be descriptive in nature. No formal hypothesis testing is planned.
This is an observational case-control study of tissues collected from women with ER+HER2- breast cancers. The immune environments of these cancers will be compared to triple negative and HER2+ breast cancers. No randomization or changes to standard of care treatment will occur as part of the study.
This study now plans to explore the efficacy and safety of hetrombopag in chemotherapy-induced thrombocytopenia in advanced breast cancer, so as to further guide the clinical application of hetrombopag in chemotherapy-induced platelets.