Publications by authors named "Mark Keaton"

The human epidermal growth factor receptor 2 (HER2) is overexpressed in 25%-30% of breast cancer patients. Anti-HER2 therapies have changed the aggressive course of HER2+ breast cancer. In spite of the therapeutic benefits, their cardiotoxicities are major concerns, especially when used concurrently with anthracyclines.

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Purpose: Ixabepilone is a microtubule stabilizer with activity in taxane-refractory metastatic breast cancer and low susceptibility to taxane-resistance mechanisms including multidrug-resistant phenotypes and high β-III tubulin expression. Since these resistance mechanisms are common in triple-negative breast cancer (TNBC), ixabepilone may have particular advantages in this patient population. This study evaluated the substitution of ixabepilone for paclitaxel following doxorubicin/cyclophosphamide (AC) in the adjuvant treatment of early-stage TNBC.

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This manuscript provides a comprehensive review and highlights of the 2015 San Antonio Breast Cancer Symposium by the leading breast cancer specialists and investigators in the field.

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Background: Adding bevacizumab to docetaxel or paclitaxel in the first-line improves the progression-free survival (PFS) of metastatic breast cancer (MBC) patients. Docetaxel has been studied with bevacizumab at the maximally tolerated dose of 100 mg/m(2). We investigated the effects of combining bevacizumab with docetaxel (75 mg/m(2)) with or without trastuzumab for human epidermal growth factor receptor 2-positive (HER2(+)) and HER2-negative (HER2(-)) patients, respectively.

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Article Synopsis
  • The study evaluated the effects of adding the multikinase inhibitor sorafenib to chemotherapy (gemcitabine or capecitabine) in advanced breast cancer patients previously treated with bevacizumab.
  • A total of 160 patients participated in a randomized trial, and results showed that sorafenib significantly prolongs progression-free survival (PFS) compared to placebo.
  • While sorafenib improved PFS and time to progression, it also increased the occurrence of severe side effects, which were considered manageable for patients.
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Background: The addition of bevacizumab to paclitaxel improved progression-free survival (PFS) of patients with metastatic breast cancer (MBC). We examined the efficacy and safety of adding gemcitabine to paclitaxel/bevacizumab (PB).

Patients And Methods: In this multicenter, open-label, randomized phase II trial, women with locally advanced or MBC were randomly assigned to receive paclitaxel 90 mg/m(2) (days 1, 8, 15) and bevacizumab 10 mg/kg (days 1, 15) with or without gemcitabine 1500 mg/m(2) (days 1, 15) in 28-day cycles.

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  • - The study evaluated the effectiveness and safety of a treatment combining bevacizumab, cetuximab, and optionally gemcitabine for patients with advanced pancreatic adenocarcinoma, with a focus on progression-free survival (PFS).
  • - Patients were split into two groups, one receiving gemcitabine (Arm A) and the other not (Arm B), with results showing better PFS and overall survival for those on the gemcitabine regimen.
  • - The study concluded early due to insufficient efficacy in both treatment arms, noting that while both were tolerated, gemcitabine caused more severe side effects, ultimately suggesting that this dual treatment strategy is not worth further exploration in pancreatic cancer.
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Introduction: Weekly administration of nanoparticle albumin-bound (nab) paclitaxel as a first-line treatment for metastatic breast cancer (MBC) has not been fully investigated. The addition of trastuzumab, a monoclonal antibody against human epidermal growth factor receptor 2 (HER2), is less understood. This phase II study evaluated the efficacy and safety of weekly nab paclitaxel in the first-line MBC setting.

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Pemetrexed and gemcitabine are both active agents for the treatment of locally advanced or metastatic NSCLC. We tested a novel biweekly combination of pemetrexed and gemcitabine for tolerability and efficacy in 45 elderly and/or poor performance status patients (44% female, mean age of 72.4 years) with measurable stage IIIB/IV NSCLC.

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