Association between biologically effective dose and local control after stereotactic body radiotherapy for metastatic sarcoma.

Introduction: Stereotactic body radiation therapy (SBRT) is increasingly utilized for patients with recurrent and metastatic sarcoma. SBRT affords the potential to overcome the relative radioresistance of sarcomas through delivery of a focused high biological effective dose (BED) as an alternative to invasive surgery. We report local control outcomes after metastatic sarcoma SBRT based on radiation dose and histology.

Real-world Outcomes of Cyclin-dependent Kinase Inhibitors Continued Beyond First Disease Progression in Hormone Receptor-positive Metastatic Breast Cancer.

Background: CDK4/6 inhibitors (CDK4/6i), in combination with aromatase inhibitors, are United States Food and Drug Administration-approved for the treatment of hormone receptor-positive (HR)/human epidermal growth factor receptor 2-negative (HER2) metastatic breast cancer (MBC). The effectiveness of continuing them beyond first disease progression (PD) is currently unknown. This retrospective study evaluated the impact of the continuation of CDK4/6i beyond first PD in HR/HER2 MBC using real-world experience.

Real-world clinical outcomes and toxicity in metastatic breast cancer patients treated with palbociclib and endocrine therapy.

Purpose: Real-world data are critical to demonstrate the reproducibility of evidence and external generalizability of randomized clinical trials. Palbociclib is an oral small-molecule inhibitor of cyclin-dependent kinases 4 and 6 that has been shown to improve progression-free survival (PFS) when combined with letrozole or fulvestrant in phase 3 clinical trials. We evaluated real-world outcomes in metastatic breast cancer patients who received palbociclib in combination with endocrine therapy in routine clinical practice.

A 33-year-old man with multiple bilateral pulmonary pseudoaneurysms.

A 33-year-old man, never smoker, presented with acute-onset dyspnea secondary to bilateral pulmonary emboli. Echocardiography at the time revealed a right atrial myxoma, for which he underwent resection, followed by anticipated lifelong therapeutic anticoagulation therapy.

Phase III double-blind, placebo-controlled, prospective randomized trial of adjuvant tamoxifen vs. tamoxifen and fenretinide in postmenopausal women with positive receptors (EB193): an intergroup trial coordinated by the Eastern Cooperative Oncology Group.

Fenretinide and tamoxifen have additive antitumor effects preclinically. We performed a randomized, placebo-controlled, double-blind adjuvant trial in breast cancer patients treated for 5 years with tamoxifen, with or without fenretinide. Between October 1995 and October 1999, 426 postmenopausal women with hormone receptor-positive breast cancer were randomized.

Use of chemotherapy for patients with bone and soft-tissue sarcomas.

For patients with bone sarcomas, chemotherapy has a proven role in the primary therapy of osteogenic sarcoma and Ewing sarcoma but no role for chondrosarcoma. Chemotherapy's role is currently more limited for patients with soft-tissue sarcomas, as it is generally used to palliate metastatic disease in most subtypes of soft-tissue sarcoma and remains largely investigational in the treatment of operable disease. The chemotherapy regimens for musculoskeletal sarcomas often carry significant potential toxicities, so the efficacy of less intensive and less toxic regimens is a focus of ongoing research.

Phase I trial of weekly docetaxel, weekly doxorubicin, daily oral cyclophosphamide, and G-CSF (ConTAC regimen) in advanced malignancies.

Purpose: This was a phase I study evaluating the dose limiting toxicity (DLT) and the maximum tolerated dose (MTD) of weekly docetaxel, doxorubicin and daily oral cyclophosphamide with G-CSF support (ConTAC regimen).

Patients And Methods: Cohorts of 3-6 patients with advanced breast or other solid malignancies were entered at subsequently higher dose levels until dose-limiting toxicities (DLT) were noted in 2 or more patients per dose level during the first 6 weeks of therapy. This study escalated dosages of docetaxel and doxorubicin simultaneously, while the dose of oral cyclophosphamide was fixed at 60 mg/m(2) daily.

A phase II study of cisplatin preceded by a 12-h continuous infusion of concurrent hydroxyurea and cytosine arabinoside (Ara-C) for adult patients with malignant gliomas (Southwest Oncology Group S9149).

Inhibition of DNA excision repair can modulate resistance to cisplatin. Cytosine arabinoside (Ara-C) and hydroxyurea (HU), in combination, inhibit the excision-repair system and removal of platinum-DNA adducts. Marked cytotoxic synergy had been demonstrated in vitro at clinically achievable levels.

Fluorescence in situ hybridization (FISH) as primary methodology for the assessment of HER2 Status in adenocarcinoma of the breast: a single institution experience.

The demand for both reflexed and primary fluorescence in-situ hybridization (FISH) testing in the clinical setting is increasing. Relevant literature has reported the incidence of HER2 overexpression in 20% to 30% of cases, but some reports suggest that HER2 gene amplification rates are substantially lower. Published data, however, on primary FISH assessment from a single institution is limited, especially information about the frequency of the anomalous genotypes defined by FISH.

Adjuvant therapy of osteosarcoma--A Phase II trial: Southwest Oncology Group study 9139.

Background: The objective of this study was to estimate the time to treatment failure and survival rate of the three-drug combination of doxorubicin, cisplatin, and ifosfamide as primary and postoperative, adjunctive treatment for teenagers and adults with osteosarcoma (OS).

Methods: Sixty-three eligible patients with nonmetastatic OS of the extremities were registered from 24 institutions from February, 1992 through December, 1996. Chemotherapy was comprised of doxorubicin at a dose of 75 mg/m2 and cisplatin at a dose of 120 mg/m2, alternating with doxorubicin at a dose of 50 mg/m2 and ifosfamide at a dose of 8 g/m2.