PGR negative

P2, N=220, Active, not recruiting, West German Study Group | Recruiting --> Active, not recruiting | Trial completion date: Oct 2024 --> Jan 2025 | Trial primary completion date: Aug 2015 --> Jan 2025

P2, N=348, Recruiting, West German Study Group | Not yet recruiting --> Recruiting

ET/HT can probably be used after ovarian neoplasms except for granulosa cell tumors, and with great caution after low-grade serous ovarian carcinoma and serous borderline ovarian tumors. ET/HT can be used with great caution in women after estrogen receptor (ER)/progesterone receptor (PR)-positive breast cancer and is probably allowed after ER/PR-negative breast cancer.

P1, N=272, Active, not recruiting, Genentech, Inc. | Trial completion date: Nov 2024 --> Mar 2025 | Trial primary completion date: Nov 2024 --> Mar 2025

P2, N=416, Completed, Palleos Healthcare GmbH | Active, not recruiting --> Completed

ER+/PR-/HER2- BC was a special subtype with aggressive clinicopathological features and more tend to have distant metastasis rather than nodal involvement or local relapse. ER+/PR-/HER2- early BC did not seem to benefit from adjuvant ET.

P1/2, N=142, Recruiting, Eisai Inc. | Trial completion date: Mar 2025 --> Oct 2024 | Trial primary completion date: Mar 2025 --> Oct 2024

The case involves a 38-year-old patient with a history of hormonally treated endometriosis and five IVF cycles, who presented for mammographic and ultrasound screening. The screening revealed multicentric and multifocal BIRADS-5 lesions, with histopathological and immunohistochemical analysis confirming invasive breast carcinoma of no special type with ductal carcinoma in situ, HER2 positive (3+), estrogen receptor and progesterone receptor negative, and a Ki-67 proliferation index of 50%.

P2, N=16, Recruiting, Wake Forest University Health Sciences | Trial completion date: Jan 2025 --> Jan 2027 | Trial primary completion date: Oct 2024 --> Mar 2025

P1, N=245, Recruiting, Incyte Corporation | N=165 --> 245

Epidermal growth factor receptor expression was most likely associated with ER and PR negative tumors. Assessments of multiple molecular markers aid to understand the biological behavior of the disease in Ethiopian population. It might also help to predict which group of patients might get more benefit from the selected treatment strategies and which are not.

P1, N=573, Active, not recruiting, Exelixis | Trial completion date: Feb 2025 --> Jul 2025

MFI showed a significant predictive value for 5-year survival for patients ≥ 80 and should be part of the preoperative evaluation.

Our findings support genetic risk evaluation, enhanced screening, and lifestyle changes in women at higher risk of SBC. Additional risk factors must contribute to the unequal burden of SBC across racial and ethnic groups.

We report a relatively rare case of primary breast cancer metastasis to three metastatic sites: cervix, lung, and neck. To our best knowledge, this is the first report of primary breast cancer metastasis to three sites including the cervix.

P2, N=169, Completed, US Oncology Research | Active, not recruiting --> Completed | Trial completion date: Dec 2023 --> Aug 2024 | Trial primary completion date: Dec 2023 --> Apr 2024

P2, N=21, Recruiting, University of Wisconsin, Madison | Suspended --> Recruiting

These data provide evidence of both metabolic and epigenetic effects of n-3 PUFAs in breast adipose tissue, elucidating novel mechanisms of action for high-dose EPA+DHA-mediated prevention of ERPR(-) breast cancer. Clinicaltrials.gov identifier NCT02295059.

Evaluation of DWI findings revealed that a higher lesion-to-normal breast parenchyma apparent diffusion coefficient (ADC) ratio statistically increased the probability of HRc positivity (p = 0.033). Certain clinicopathological, mammography, and MRI features, along with the lesion-to-normal breast parenchyma ADC ratio, can serve as predictors for HRc status in DCIS lesions.

Managing Li-Fraumeni syndrome (LFS) and its associated cancers, particularly in young patients, necessitates a comprehensive and multidisciplinary approach. Early genetic testing for TP53 mutations is crucial in identifying LFS, enabling personalized treatment plans and proactive surveillance strategies.

P1/2, N=170, Active, not recruiting, Cyteir Therapeutics, Inc. | Trial completion date: Dec 2024 --> Apr 2025 | Trial primary completion date: Jul 2024 --> Dec 2024

P1/2, N=119, Active, not recruiting, AstraZeneca | Trial completion date: May 2024 --> Dec 2024

CD73 has a significant role in tumorigenesis driving the reprogramming of lipid metabolism through the regulatory loop with PR and PPARγ in epithelial cells of mammary glands. Low CD73 expression/CD73 KO might enhance mutational burden by disrupting this regulatory loop, delaying the onset of HR-negative tumors. Our results support combining therapy targeting the CD73-adenosine axis and tumor lipidome against HR-negative tumors, especially at their earliest developmental stage.

A strong association of stromal CD10 expression with a well-established negative prognostic marker such as a higher tumor grade, ER-negative status, and PR-negative status was noted and thus, stromal CD10 expression can be used as an independent prognostic marker in breast carcinoma.

P2, N=21, Suspended, University of Wisconsin, Madison | Trial primary completion date: Sep 2024 --> Dec 2024

The IHC 3+ group had a higher pCR rate than the IHC 2+/FISH(+) group. Along with clinicopathological characteristics, MRI parameters were supplemental predictors of pCR, particularly in IHC 3+ patients.

P2, N=329, Active, not recruiting, Astellas Pharma Global Development, Inc. | Recruiting --> Active, not recruiting

In addition, the upregulation of IGFBP6 in BC increased the drug sensitivity to docetaxel, paclitaxel and gemcitabine. It is not only involved in the maintenance of the tumor microenvironment in BC but also inhibits the energy metabolism of cancer cells through glucose metabolism-related pathways. These findings may provide a new perspective on IGFBP6 as a potential prognostic marker for BC.

HER2-positive grade 1 carcinomas are uncommon, and more often have marked nuclear pleomorphism and lack oestrogen receptor and progesterone receptor expression compared with HER2-negative grade 1 carcinomas. A HER2-poitive result in the core biopsy was confirmed in 11 of 13 tumours that had repeat testing.

P2, N=70, Active, not recruiting, Fudan University | Trial completion date: Dec 2023 --> Dec 2025

P2, N=50, Recruiting, Wake Forest University Health Sciences | Trial completion date: Oct 2025 --> Mar 2025

P2; Trial completion date: May 2024 --> May 2026 | Trial primary completion date: May 2024 --> May 2026

The staining for IHC markers varies based on tumor histology which may be considered in determining breast origin. Notably, we report that SOX10/AR dual negative status in TNBC is associated with a worse prognosis along with AJCC stage, and chemotherapy status.

P1, N=45, Recruiting, George T. Budd | Trial completion date: Sep 2024 --> Mar 2025 | Trial primary completion date: May 2024 --> Nov 2024

P2, N=25, Recruiting, M.D. Anderson Cancer Center | Trial completion date: Mar 2024 --> Dec 2026 | Trial primary completion date: Mar 2024 --> Dec 2026

Patients with HER2-positive BC undergoing NAT develop varying degrees of abnormalities (elevated or decreased) in FBG, FTG, and FTC; moreover, the status of FTG levels during NAT may predict pCR in ER-negative or PR-negative HER2-positive BC.Early monitoring and timely intervention for FTG abnormalities may enable this subset of patients to increase the likelihood of obtaining a pCR along with management of abnormal markers.

The methylation of IL21R showed efficient discriminatory power to distinguish benign breast tumours from BC (area under curve (AUC) = 0.88), and especially from ER-negative BC (AUC = 0.95), PR-negative BC (AUC = 0.93) and triple-negative BC (AUC = 0.96). We disclosed significant IL21R hypomethylation in patients with BC compared to women with benign breast tumours, and revealed the somatic change of DNA methylation could be a potential biomarker for molecular pathology of BC.

P=N/A, N=98, Recruiting, Beth Israel Deaconess Medical Center | Trial completion date: Aug 2024 --> Aug 2025 | Trial primary completion date: Aug 2023 --> Aug 2024

After progression on treatment with CDK4/6 inhibitors for HR-positive/HER2-low expression metastatic breast cancer, both chemotherapy and endocrine therpy combined with targeted drugs are viable treatment options. However, for patients with PR negative or ≥2 lines of endocrine therapy previously, priority should be accorded to chemotherapy.

Our study revealed that plasma metabolites were significantly different between recurrent and non-recurrent patients, proposing therapeutic insights for breast cancer prognosis.

Breast cryoablation for palliative and curative treatment of breast cancer has been performed for decades. Although there is a recent resurgence of interest in breast cryoablation with curative intent for unifocal, hormone receptor-positive, human epidermal growth factor receptor 2-negative breast cancer, this report highlights the essential role that cryoablation can play in the palliative treatment of multicentric oestrogen and progesterone receptor-negative and human epidermal growth factor receptor 2-negative (triple-negative) breast cancer, meeting the select pretreatment objectives such as breast or nipple pain relief and prevention of tumour erosion through the skin or nipple in patients who have failed or cannot tolerate the standard of care treatment.

In this study, we found that the allele A of the FGFR2-rs13387042 polymorphism is associated with increased risk of developing breast cancer. This study underscores its potential as a genetic marker for personalized risk assessment and targeted interventions.