Publications by authors named "Georgiana Ellis"

Introduction: Neoadjuvant chemotherapy is standard treatment for locally advanced breast cancer (LABC) or inflammatory breast cancer (IBC). We hypothesized that adding sunitinib, a tyrosine kinase inhibitor with antitumor and antiangiogenic activity, to an anthracycline and taxane regimen would improve pathologic complete response (pCR) rates to a prespecified endpoint of 45% in patients with HER2-negative LABC or IBC.

Methods: We conducted a multicenter, phase II trial of neoadjuvant sunitinib with paclitaxel (S+T) followed by doxorubicin and cyclophosphamide plus G-CSF for patients with HER2-negative LABC or IBC.

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Many studies have sought to optimize the dosing schedule of adjuvant chemotherapy in early-stage breast cancer. Here, we assessed the use of continuous metronomic weekly doxorubicin plus daily oral cyclophosphamide (AC) with continuous G-CSF growth factor support for 12 weeks followed by weekly nab-paclitaxel (nP) for 12 weeks. A nonrandomized phase II clinical trial was designed to assess (1) DFS at 2 years, (2) dose delivered, (3) use of nP in the adjuvant setting, and (4) toxicities.

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The NCCN Clinical Practice Guidelines in Oncology (NCCN Guidelines) for Antiemesis address all aspects of management for chemotherapy-induced nausea and vomiting. These NCCN Guidelines Insights focus on recent updates to the NCCN Guidelines for Antiemesis, specifically those regarding carboplatin, granisetron, and olanzapine.

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Background: Commonly used adjuvant systemic therapies harbor high rates of severe short-term and long-term side effects but are often justified to patients because of curative intent in early-stage breast cancer. One of the oldest and least toxic adjuvant regimens, CMF (oral cyclophosphamide given with intravenous methotrexate and 5-fluorouracil), has been largely abandoned because of the perception that it underperforms for survival outcomes compared with modern regimens containing anthracycline and/or taxanes.

Materials And Methods: To address this misperception, we performed a review of all consecutive breast cancer patients at the Seattle Cancer Care Alliance over the past decade who received 6 months of adjuvant CMF as their sole chemotherapy regimen and determined rates for relapse-free survival (RFS), overall survival (OS), and major organ toxicity.

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Hormone ablation therapy (HALT) for breast or prostate cancer accelerates the development of osteoporosis in both men and women by causing estrogen deficiency, which increases the risk for fracture by promoting bone resorption mediated by osteoclasts. Denosumab, a fully human monoclonal antibody that inhibits osteoclast formation and function, increases bone mass in patients undergoing hormone ablation therapy. In the HALT study of 1,468 men with prostate cancer on androgen-deprivation therapy, denosumab significantly reduced the risk of new vertebral fractures, increased bone mineral density (BMD), and reduced markers of bone turnover.

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Purpose: To determine, by molecular imaging, how in vivo pharmacodynamics of estrogen-estrogen receptor (ER) binding differ between types of standard endocrine therapy.

Experimental Design: The ER has been a highly successful target for breast cancer treatment. ER-directed treatments include lowering ligand concentration by using aromatase inhibitors (AI) and blocking the receptor with agents like tamoxifen (TAM) or fulvestrant (FUL).

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Purpose: Changes in tumor metabolism from positron emission tomography (PET) in locally advanced breast cancer (LABC) patients treated with neoadjuvant chemotherapy (NC) are predictive of pathologic response. Serial dynamic [(18)F]-FDG (fluorodeoxyglucose) PET scans were used to compare kinetic parameters with the standardized uptake value (SUV) as predictors of pathologic response, disease-free survival (DFS), and overall survival (OS).

Experimental Design: Seventy-five LABC patients underwent FDG PET prior to and at midpoint of NC.

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Purpose: Patients with inflammatory breast cancer (IBC) or locally advanced breast cancer (LABC) were randomly assigned to 21-day doxorubicin and cyclophosphamide administered for five cycles (standard arm) versus weekly doxorubicin and daily oral cyclophosphamide administered with granulocyte colony-stimulating factor support for 15 weeks (continuous arm). All patients had subsequent weekly paclitaxel for 12 weeks before surgery.

Patients And Methods: Patients (n = 372) were randomly assigned to the standard arm (n = 186) or the continuous arm (n = 186) stratified by disease type (LABC, n = 256; IBC, n = 116).

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Cancer and its treatment can compromise bone health, leading to fracture, pain, loss of mobility, and hypercalcemia of malignancy. Bone metastasis occurs frequently in advanced prostate and breast cancers, and bony manifestations are commonplace in multiple myeloma. Osteoporosis and osteopenia may be consequences of androgen-deprivation therapy for prostate cancer, aromatase inhibition for breast cancer, or chemotherapy-induced ovarian failure.

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A serious complication associated with breast cancer treatment is the increased risk for development of therapy-related myeloid neoplasms (t-MN). To determine whether dose-intensive adjuvant regimens for breast cancer induce genetic damage to hematopoietic stem cells, defined by the emergence of clonal hematopoiesis, and whether detection of clonal hematopoiesis could be used as an early marker for the subsequent development of t-MN, the Southwest Oncology Group designed a pilot clonality investigation to estimate the incidence of clonal hematopoiesis during and shortly after completion of the dose intensive neoadjuvant regimens for high-risk breast cancer patients. Peripheral blood samples from 274 patients obtained prior to treatment, at time of surgery, and at 6 and 12 months post-surgery were examined by two different clonality assays: the HUMARA (HUMan Androgen Receptor) assay to estimate the incidence of early genetic damage by clonal proliferation, and microsatellite instability (MSI) testing to screen for LOH or defective DNA mismatch repair mechanisms.

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Article Synopsis
  • Denosumab significantly improved bone mineral density (BMD) at the lumbar spine compared to placebo over a two-year period in patients with hormone-receptor-positive, non-metastatic breast cancer on aromatase inhibitors.
  • Subgroup analyses considered various factors such as aromatase inhibitor type, tamoxifen use, age, and time since menopause, finding that denosumab consistently led to greater BMD increases across several skeletal sites.
  • The treatment involved administering 60 mg of denosumab subcutaneously every six months, resulting in statistically significant BMD gains for all subgroups at both the 12- and 24-month marks.
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Purpose: Adjuvant aromatase inhibitor therapy is well established in postmenopausal women with hormone receptor-positive breast cancer, but such therapy is complicated by accelerated bone loss and increased fracture risk. We investigated the ability of denosumab, a fully human monoclonal antibody against receptor activator of nuclear factor-kappaB ligand, to protect against aromatase inhibitor-induced bone loss.

Patients And Methods: Eligible women with hormone receptor-positive nonmetastatic breast cancer treated with adjuvant aromatase inhibitor therapy were stratified by duration of aromatase inhibitor therapy (< or = 6 v > 6 months), received supplemental calcium and vitamin D, and were randomly assigned to receive placebo (n = 125) or subcutaneous denosumab 60 mg (n = 127) every 6 months.

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Purpose: Patients with locally advanced breast carcinoma (LABC) receive preoperative chemotherapy to provide early systemic treatment and assess in vivo tumor response. Serial positron emission tomography (PET) has been shown to predict pathologic response in this setting. We evaluated serial quantitative PET tumor blood flow (BF) and metabolism as in vivo measurements to predict patient outcome.

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Background: The response of bone-dominant (BD) breast cancer to therapy is difficult to assess by conventional imaging. Our preliminary studies have shown that quantitative serial 2-[(18)F] fluoro-2-deoxy-D: -glucose positron emission tomography (FDG PET) correlates with therapeutic response of BD breast cancer, but the relationship to long-term outcome measures is unknown. Our goal was to evaluate the prognostic power of serial FDG PET in BD breast cancer patients undergoing treatment.

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Purpose: In breast cancer, [(18)F]fluoroestradiol (FES) positron emission tomography (PET) correlates with estrogen receptors (ER) expression and predicts response to tamoxifen. We tested the ability of FES-PET imaging to predict response to salvage hormonal treatment in heavily pretreated metastatic breast cancer patients, predominantly treated with aromatase inhibitors.

Patients And Methods: Initial FES uptake measurements in 47 patients with ER-positive tumors were correlated with subsequent tumor response to 6 months of hormonal treatment.

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Background: Studies utilizing serial [99mTc]-sestamibi (MIBI) scintimammography have reported accurate prediction of tumor response in patients with locally advanced breast carcinoma (LABC) undergoing neoadjuvant chemotherapy. The pathologic response of LABC to presurgical treatment regimens is a prognostic indicator of survival. The authors tested whether MIBI uptake posttherapy predicted survival.

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The presence of internal mammary (IM) lymph node metastases in breast cancer predicts outcome and may alter treatment. Standard imaging has limited usefulness for evaluation of the IM chain because of low sensitivity. Our preliminary studies suggested that [F-18]-2-fluoro-d-glucose positron emission tomography (FDG-PET) improves the detection of IM and mediastinal metastases.

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Objective: Our aim was to evaluate the impact of FDG PET on defining the extent of disease and on the treatment of patients with advanced breast cancer.

Materials And Methods: The medical records of 125 consecutive patients with recurrent or metastatic breast cancer referred for FDG PET from January 1998 through May 2002 were retrospectively reviewed. The rationale for FDG PET referral and the impact of FDG PET on subsequent treatment decisions for patients were determined by chart review.

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Context: Testing for HER-2 oncogene in breast cancer has increased because of its role as a prognostic and predictive factor. Some advocate gene testing by fluorescence in situ hybridization (FISH) vs protein testing by immunohistochemistry as the method which most accurately evaluates and predicts response to the anti-HER-2 antibody, trastuzumab. However, critical examination of FISH on a screening basis has yet to be performed.

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Goals Of Work: The purpose of this study was to examine the specific herbs or vitamins (HV) used by patients receiving chemotherapy. Specifically, the following aspects were investigated: (1) HV use among adult cancer patients receiving chemotherapy, (2) the frequency of potential chemotherapy-HV interactions, (3) communication patterns between oncologists and their cancer patients taking HV, and (4) patients' reactions to two hypothetical scenarios of chemotherapy-HV interactions.

Patients And Methods: Adult cancer patients receiving chemotherapy at a university-based outpatient clinic over a 1-month period were sent a validated eight-page questionnaire regarding the use of complementary/alternative medicine, focusing on HV use.

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Unlabelled: Locally advanced breast cancer (LABC) is commonly treated with neoadjuvant chemotherapy followed by definitive surgery. The factors influencing the response of LABC to presurgical chemotherapy are incompletely understood. To characterize in vivo tumor biology in patients with LABC, we performed serial measurements of blood flow and glucose metabolism in LABC patients over the course of neoadjuvant chemotherapy and compared measurements with response.

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We present a rare case of the paraneoplastic disorder, amphiphysin autoimmunity, which is associated with breast cancer. Amphiphysin is a presynaptic protein to which the body can form antibodies usually in cases of carcinoma, particularly of the breast and lung. The diagnosis of malignancy was delayed because of the complexity of the presenting neurologic symptoms related to the autoimmunity.

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Paclitaxel-induced myalgias and arthralgias occur in a significant fraction of patients receiving therapy with this taxane, potentially impairing physical function and quality of life. Paclitaxel-induced myalgias and arthralgias are related to individual doses; associations with the cumulative dose and infusion duration are less clear. Identification of risk factors for myalgias and arthralgias could distinguish a group of patients at greater risk, leading to minimization of myalgias and arthralgias through the use of preventive therapies.

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