Clinical Trials Using Tamoxifen Citrate

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Clinical trials are research studies that involve people. The clinical trials on this list are studying Tamoxifen Citrate. All trials on the list are supported by NCI.

NCI’s basic information about clinical trials explains the types and phases of trials and how they are carried out. Clinical trials look at new ways to prevent, detect, or treat disease. You may want to think about taking part in a clinical trial. Talk to your doctor for help in deciding if one is right for you.

Trials 1-15 of 15
  • Hormone Therapy with or without Everolimus in Treating Patients with Breast Cancer

    This randomized phase III trial studies how well hormone therapy when given together with or without everolimus work in treating patients with breast cancer. Estrogen can cause the growth of breast cancer cells. Hormone therapy using tamoxifen citrate, goserelin acetate, leuprolide acetate, anastrozole, letrozole, or exemestane, may fight breast cancer by lowering the amount of estrogen the body makes. Everolimus may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. It is not yet known whether hormone therapy is more effective when given with or without everolimus in treating breast cancer.
    Location: 1296 locations

  • Tamoxifen Citrate or Letrozole with or without Palbociclib in Treating Patients with Stage I-III Invasive Breast Cancer before Surgery

    This phase II clinical trial studies how well tamoxifen citrate or letrozole with or without palbociclib work in treating patients with stage I-III invasive breast cancer before surgery. Antihormone therapies, such as tamoxifen citrate and letrozole, may lessen the amount of estrogen made by the body. Palbociclib may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. It is not yet known whether giving tamoxifen citrate or letrozole with or without palbociclib may work better in treating patients with stage I-III invasive breast cancer.
    Location: 12 locations

  • Palbociclib in Combination with Fulvestrant or Tamoxifen Citrate in Treating Patients with Locally Advanced or Metastatic Hormone Receptor Positive Breast Cancer

    This phase II trial studies the side effects of palbociclib when given together with fulvestrant or tamoxifen citrate in treating patients with hormone receptor positive breast cancer that has spread from where it started to nearby tissue or lymph nodes (locally advanced) or has spread to other places in the body (metastatic). Palbociclib may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. Hormone therapy using fulvestrant or tamoxifen citrate may fight breast cancer by blocking the use of estrogen by the tumor cells. Giving palbociclib together with fulvestrant or tamoxifen citrate may work better in treating hormone receptor positive breast cancer.
    Location: 11 locations

  • Tamoxifen Citrate or Afimoxifene in Treating Patients with Estrogen Receptor Positive Breast Cancer

    This randomized phase IIB trial studies how well tamoxifen or afimoxifene works in treating patients with estrogen receptor positive breast cancer. Estrogen can cause the growth of breast cancer cells. Hormone therapy using tamoxifen citrate or afimoxifene may fight breast cancer by blocking the use of estrogen by the tumor cells.
    Location: 6 locations

  • TAK-228 Plus Tamoxifen in Patients With ER-Positive, HER2-negative Breast Cancer

    This is an open label phase II clinical trial to determine the efficacy, toxicity, and safety of TAK-228 plus tamoxifen in patients with newly diagnosed ER-positive, HER2-negative breast cancer.
    Location: 2 locations

  • Palbociclib in Combination With Tamoxifen as First Line Therapy for Metastatic Hormone Receptor Positive Breast Cancer

    This is a non-randomized, open-label, single-arm, multicenter, phase II study of palbociclib in combination with tamoxifen in women with HR(+) / HER2(-) advanced breast cancer who have not received prior systemic anticancer therapies for their advanced / metastatic disease.
    Location: 2 locations

  • A Study of Multiple Immunotherapy-Based Treatment Combinations in Hormone Receptor (HR)-Positive Human Epidermal Growth Factor Receptor 2 (HER2)-Negative Breast Cancer

    This study is designed to evaluate the efficacy, safety, and pharmacokinetics of several immunotherapy-based combination treatments in participants with metastatic HR-positive, HER2-negative breast cancer who have progressed during or following first-line metastatic treatment with a cyclin-dependent kinase (CDK) 4 / 6 inhibitor such as palbociclib, ribociclib, or abemaciclib. The study will be performed in two stages. During Stage 1, participants will be randomized to fulvestrant (control) or an atezolizumab-containing doublet or triplet combination. Those who experience disease progression, loss of clinical benefit, or unacceptable toxicity may be eligible to receive a new triplet combination treatment in Stage 2 until loss of clinical benefit or unacceptable toxicity. New treatment arms may be added and / or existing treatment arms may be closed during the course of the study on the basis of ongoing clinical efficacy and safety as well as the current treatments available.
    Location: 3 locations

  • Fulvestrant or Tamoxifen Citrate in Treating Patients with Cyclin D1 and Estrogen Receptor Positive Breast Cancer

    This randomized phase II trial studies how well fulvestrant or tamoxifen citrate work in treating patients with cyclin D1 and estrogen receptor positive breast cancer. Drugs used in chemotherapy, such as fulvestrant, work in different ways to stop the growth of tumor cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Tamoxifen citrate may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. It is not yet known whether fulvestrant or tamoxifen citrate works better in treating patients with breast cancer.
    Location: Icahn School of Medicine at Mount Sinai, New York, New York

  • Fulvestrant and Tamoxifen Citrate in Treating Patients with Estrogen Receptor Positive Metastatic Breast Cancer

    This randomized phase II trial studies how well fulvestrant and tamoxifen citrate work in treating patients with estrogen receptor positive breast cancer that has spread to other parts of the body. Estrogen can cause the growth of breast tumor cells. Hormone therapy using fulvestrant and tamoxifen citrate may fight estrogen receptor positive metastatic breast cancer by blocking the use of estrogen by the tumor cells.
    Location: University of Pittsburgh Cancer Institute (UPCI), Pittsburgh, Pennsylvania

  • Tamoxifen Citrate or Aromatase Inhibitor in Treating Elderly Patients with Estrogen Receptor Positive Breast Cancer That Can Be Removed by Surgery

    This phase II trial studies how well tamoxifen citrate or aromatase inhibitor works in treating elderly patients with estrogen receptor positive breast cancer that can be removed by surgery. Hormone therapy using tamoxifen citrate or aromatase inhibitor may fight estrogen receptor positive breast cancer by lowering the amount of estrogen the body makes and by blocking the use of estrogen by the tumor cells.
    Location: Siteman Cancer Center at Washington University, Saint Louis, Missouri

  • Pembrolizumab, Tamoxifen Citrate, and Vorinostat in Treating Patients with Hormone Receptor Positive Stage IV Breast Cancer

    This randomized phase II trial studies the side effects of pembrolizumab, tamoxifen citrate, and vorinostat and how well they work in treating patients with hormone receptor positive stage IV breast cancer. Monoclonal antibodies, such as pembrolizumab, may block tumor growth in different ways by targeting certain cells. Estrogen can cause the growth of breast cancer cells. Antihormone therapy, such as tamoxifen citrate, may block the use of estrogen by the tumor cells. Vorinostat may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. Giving pembrolizumab, tamoxifen citrate, and vorinostat may work better in treating patients with hormone receptor positive stage IV breast cancer.
    Location: UCSF Medical Center-Mount Zion, San Francisco, California

  • Tamoxifen Citrate, Anastrozole, or Fulvestrant in Treating Patients with Stage I-III Invasive Lobular Breast Cancer

    This phase II trial studies how well tamoxifen citrate, anastrozole, or fulvestrant work in treating patients with stage I-III invasive lobular breast cancer. Tamoxifen citrate and anastrozole may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. Drugs used in chemotherapy, such as fulvestrant, work in different ways to stop the growth of tumor cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. It is not yet known whether giving tamoxifen citrate, anastrozole, or fulvestrant will work better in treating patients with invasive lobular breast cancer.
    Location: University of Pittsburgh Cancer Institute (UPCI), Pittsburgh, Pennsylvania

  • Endocrine Therapy in Treating Patients with HER2 Negative, Low Risk Breast Cancer

    This pilot phase IV trial studies how well endocrine therapy works in treating patients with HER2 negative, low risk breast cancer. Estrogen can cause the growth of breast cancer cells. Endocrine therapies such as aromatase inhibitors and selective estrogen receptor modulators may lessen the amount of estrogen made by the body.
    Location: Fred Hutch / University of Washington Cancer Consortium, Seattle, Washington

  • Paclitaxel and Carboplatin before Surgery in Treating Nigerian Women with Stage IIA-IIIC Breast Cancer

    This phase II trial studies how well paclitaxel works with carboplatin before surgery in treating Nigerian women with stage IIA-IIIC breast cancer before surgery. Drugs used in chemotherapy, such as paclitaxel and carboplatin, work in different ways to stop the growth of tumor cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading.
    Location: University of Chicago Comprehensive Cancer Center, Chicago, Illinois

  • A Study of LY2835219 (Abemaciclib) in Combination With Therapies for Breast Cancer That Has Spread

    The main purpose of this study is to evaluate the safety of a study drug known as LY2835219 in combination with different therapies (letrozole, anastrozole, tamoxifen, exemestane, exemestane plus everolimus, trastuzumab, or LY3023414 plus fulvestrant) for breast cancer that has spread to other parts of the body.
    Location: 3 locations