toceranib-phosphate and Neutropenia

Topics: Animals; Antibiotics, Antineoplastic; Antineoplastic Agents; Dog Diseases; Dogs; Doxorubicin; Drug Administration Schedule; Drug Therapy, Combination; Female; Flow Cytometry; Indoles; Male; Neoplasms; Neutropenia; Pyrroles

We hypothesized that the addition of toceranib to metronomic cyclophosphamide/piroxicam therapy would significantly improve disease-free interval (DFI) and overall survival (OS) in dogs with appendicular osteosarcoma (OSA) following amputation and carboplatin chemotherapy.. This was a randomized, prospective clinical trial in which dogs with OSA free of gross metastatic disease (n = 126) received carboplatin chemotherapy (4 doses) following amputation. On study entry, dogs were randomized to receive piroxicam/cyclophosphamide with or without toceranib (n = 63 each) after completing chemotherapy. Patient demographics were not significantly different between both groups. During or immediately following carboplatin chemotherapy, 32 dogs (n = 13 toceranib; n = 19 control) developed metastatic disease, and 13 dogs left the study due to other medical conditions or owner preference. Following carboplatin chemotherapy, 81 dogs (n = 46 toceranib; n = 35 control) received the metronomic treatment; 35 dogs (n = 20 toceranib; n = 15 control) developed metastatic disease during the maintenance therapy, and 26 dogs left the study due to other medical conditions or owner preference. Nine toceranib-treated and 11 control dogs completed the study without evidence of metastatic disease 1-year following amputation. Toceranib-treated dogs experienced more episodes of diarrhea, neutropenia and weight loss than control dogs, although these toxicities were low-grade and typically resolved with supportive care. More toceranib-treated dogs (n = 8) were removed from the study for therapy-associated adverse events compared to control dogs (n = 1). The median DFI for control and toceranib treated dogs was 215 and 233 days, respectively (p = 0.274); the median OS for control and toceranib treated dogs was 242 and 318 days, respectively (p = 0.08). The one year survival rate for control dogs was 35% compared to 38% for dogs receiving toceranib.. The addition of toceranib to metronomic piroxicam/cyclophosphamide therapy following amputation and carboplatin chemotherapy did not improve median DFI, OS or the 1-year survival rate in dogs with OSA.

Topics: Administration, Metronomic; Amputation, Surgical; Animals; Bone Neoplasms; Carboplatin; Cyclophosphamide; Diarrhea; Disease-Free Survival; Dog Diseases; Dogs; Drug Therapy, Combination; Female; Indoles; Kaplan-Meier Estimate; Male; Neutropenia; Osteosarcoma; Piroxicam; Prospective Studies; Pyrroles; Regression Analysis; Treatment Outcome

The purpose of this study was to describe the toxicity profile of toceranib phosphate in tumour bearing cats. Medical records were reviewed from seven institutions. Patients with incomplete medical records and those receiving concurrent chemotherapy or NSAIDs (non-steroidal anti-inflammatory) were excluded. Fifty-five cats met the inclusion criteria. Carcinoma was diagnosed in 55% of cases. Median oral toceranib dose was 2.7 mg kg

Topics: Alanine Transaminase; Animals; Antineoplastic Agents; Azotemia; Cat Diseases; Cats; Female; Gastrointestinal Tract; Indoles; Male; Neoplasms; Neutropenia; Pyrroles; Retrospective Studies; Thrombocytopenia