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Use of KW-2189, a DNA Minor Groove-Binding Agent, in Patients with Hepatocellular Carcinoma: A North Central Cancer Treatment Group (NCCTG) Phase II Clinical Trial

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Abstract

Background

Hepatocellular carcinoma (HCC) is a common cancer in certain portions of the world. Currently no effective therapies exist for patients with advanced or metastatic HCC. KW-2189, a DNA minor groove-binding agent, has shown promising activity against HCC in preclinical evaluations.

Methods

A phase II study was conducted to evaluate the activity of KW-2189 in patients with histologic or cytologic confirmed advanced or metastatic HCC who had no prior systemic therapy. Patients received KW-2189 at a dose of 0.5 mg/m2 administered on day 1 of a 6-week cycle. The primary endpoint of the trial was objective regression. Other endpoints included toxicity, disease-free survival, and overall survival.

Results

Due to hematologic toxicity the dose of KW-2189 was reduced to 0.375 mg/m2 after 11 patients had been enrolled into the trial. Due to continued significant hematologic toxicity in the next five patients enrolled at the lower dose the trial was closed to accrual. Two responses were seen in patients enrolled at the higher dose, including one sustained CR.

Conclusion

KW-2189 showed evidence of anti-tumor activity in HCC. However, because of significant and prolonged hematologic toxicity, when given as a single dose every 6 weeks, further development of this drug in HCC is not possible. Further exploration of DNA minor groove-binding agents in the treatment of HCC appears warranted.

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Acknowledgement

This study was conducted as a trial of the North Central Cancer Treatment Group and Mayo Clinic and was supported in part by Public Health Service grants CA-25224, CA-37404, and CA-60276 from the National Cancer Institute Department of Health and Human Services.

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Correspondence to Steven R. Alberts.

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Alberts, S.R., Suman, V.J., Pitot, H.C. et al. Use of KW-2189, a DNA Minor Groove-Binding Agent, in Patients with Hepatocellular Carcinoma: A North Central Cancer Treatment Group (NCCTG) Phase II Clinical Trial. J Gastrointest Canc 38, 10–14 (2007). https://doi.org/10.1007/s12029-007-9007-6

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  • DOI: https://doi.org/10.1007/s12029-007-9007-6

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