Phase I-II Trial of Sorafenib in Combination With Ifosfamide in Soft Tissue Sarcoma

  • STATUS
    Recruiting
  • participants needed
    24
  • sponsor
    Grupo Espanol de Investigacion en Sarcomas
Updated on 7 November 2020
platelet count
cancer
monoclonal antibodies
measurable disease
small molecule
doxorubicin
anthracyclines
neutrophil count
gemcitabine
dacarbazine
ewing's sarcoma
ifosfamide
immunomodulators
soft tissue sarcoma
advanced soft tissue sarcoma

Summary

Soft tissue sarcomas (STS) are an uncommon group of malignant tumors of mesenchymal origin. For most advanced STS types, chemotherapy is currently the only available treatment. Unfortunately, a very limited number of useful drugs are active against this disease. Doxorubicin is widely considered the standard first-line treatment. Ifosfamide has also a well-established activity (1,2) and is often administered either associated with Doxorubicin or alone as a second-line chemotherapy treatment. Other drugs such as DTIC, Gemcitabine and Temozolomide showed modest activity as a second-line agents (3,4). Thus, there is a necessity to identify new agents with activity to improve therapy for patients with advanced STS. In some studies, most STS showed VEGF expression, and elevated serum VEGF levels were found to correlate with higher histologic tumor grade (5,6). Additionally, inhibition of VEGFR was associated with tumor activity in preclinical models of sarcoma (7,8). For these reasons, inhibition of VEGFR seems to be a reasonable approach to explore in the treatment of STS. Sorafenib (BAY 43-9006) is an orally available, small molecule multi-kinase inhibitor of VEGFR, PDGFR and RAF with demonstrated activity in the treatment of renal cell cancer (9). Preclinical studies suggest that the combination of Sorafenib with cytotoxic agents results in additive anti-tumor activity (10), initiating justification for combination studies. A recent trial, however, reported an unexpected incidence of cardiac toxicity in patients with STS treated with Bevacizumab, a monoclonal antibody that binds VEGF, in combination with Doxorubicin (11). This finding suggest that the possibility of potentiation of the cardiotoxicity of Doxorubicin when inhibiting the VEGF pathway cannot be ruled out. The association of Sorafenib with Ifosfamide, the other established active agent against STS, could improve the efficacy of single-agent Ifosfamide minimizing the risk of cardiac toxicity .

Details
Condition Sarcoma
Treatment Sorafenib
Clinical Study IdentifierNCT00541840
SponsorGrupo Espanol de Investigacion en Sarcomas
Last Modified on7 November 2020

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