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Insmed Incorporated Message Board

  • jsblvbjb jsblvbjb Oct 2, 2013 9:14 AM Flag

    Insmed's "little-known" lung cancer program...

    Abstract

    Background

    Osteosarcoma treatment failure is most often from the inability to control metastatic disease in the lungs. Encapsulating cisplatin within lipid complexes and delivering the agent via inhalation targets lung metastases with minimal systemic exposure. An open-label, phase Ib/IIa study was performed to characterize the safety and efficacy of inhaled lipid cisplatin (ILC) in recurrent osteosarcoma patients who only had pulmonary metastases.

    Procedure

    ILC was administered via nebulizer every 2 weeks (=1 cycle). Response was evaluated radiographically every 2 cycles. Cisplatin levels were measured in patients. When possible, metastasectomy was undertaken in patients after 2 cycles.

    Results

    Nineteen patients were treated. No patients experienced hematologic toxicity, nephrotoxicity or ototoxicity. Nausea/vomiting (≥grade 3) was attributed to study drug in one patient. Respiratory symptoms were observed in 13/19 patients with only one patient experiencing a ≥grade 3 respiratory symptom (not related to study drug). Systemic cisplatin exposure was minimal. Eleven patients had bulky disease, and all progressed prior to cycle 7. Eight patients had all lesions ≤2 cm. One patient had a sustained partial response. An additional two patients had stable disease after 2 cycles, underwent metastasectomy, and remained free from pulmonary recurrence 1 year after initiation of therapy.

    Conclusions

    ILC is well tolerated in heavily treated osteosarcoma patients and did not appear to have the typical toxicities associated with intravenous cisplatin. Three of eight patients with less bulky disease had sustained benefit. Further study of ILC is warranted. Pediatr Blood Cancer 2013; 60: 580–586. © 2012 Wiley Periodicals, Inc.

    Sentiment: Strong Buy

 
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