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  • Title: Hepatic artery infusion of high-dose melphalan at reduced flow during isolated hepatic perfusion for the treatment of colorectal metastases confined to the liver: a clinical and pharmacologic evaluation.
    Author: van Iersel LB, Verlaan MR, Vahrmeijer AL, van Persijn van Meerten EL, Tijl FG, Sparidans RW, Gelderblom H, Kuppen PJ, Tollenaar RA, van de Velde CJ.
    Journal: Eur J Surg Oncol; 2007 Sep; 33(7):874-81. PubMed ID: 17400422.
    Abstract:
    Isolated hepatic perfusion (IHP) offers the advantage of high local drug exposure with limited systemic toxicity. To increase local drug exposure, we administered melphalan at a reduced flow in the hepatic artery during IHP (hepatic artery infusion, hepatic artery-portal vein perfusion, HI-HPP). Between December 2001 and December 2004, 30 patients with colorectal cancer liver metastases underwent HI-HPP with 200mg melphalan. Samples of the perfusate were taken for pharmacokinetic analysis. Patients were monitored for response, toxicity and survival. Perfusion was aborted prematurely in 2 patients due to leakage. During melphalan administration in the hepatic inflow cannula a mean flow rate of 121.3 mL/min and mean pressure of 62.5mm Hg were achieved. One patient died within 30 days after HI-HPP. Four patients developed veno-occlusive disease (VOD), while 2 patients showed signs of VOD. Twelve patients showed hepatic response, with a median duration of response of 11.5 months, according to WHO criteria. Although HI-HPP results in high perfusate melphalan concentration levels, it is associated with a relatively high level of hepatotoxicity and a limited response rate. We believe that the low flow and pressure rates found in this study can result in reduced drug penetration of the tumour and thus limited tumour response.
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