Background: Brain metastases commonly occur in patients with metastatic melanoma and are associated with a poor prognosis. Only a few chemotherapeutic agents have been shown to be potentially active. Resistance to chemotherapy is one of the main limitations to treatment. A key mechanism of resistance is O6-methylguanine-DNA methyltransferase (MGMT). The methylation of its promotor could inhibit the activity of this enzyme; consequently, it is very important to evaluate the methylation status of all available specimens. Case Report: We report the case of a long-surviving patient in whom combination treatment with an alkylating agent inhibiting MGMT, such as temozolomide, was useful in clinical control of the disease.
The Role of O6-Methylguanine-DNA Methyltransferase in a Long-Surviving Metastatic Melanoma
STINCO, Giuseppe;
2014-01-01
Abstract
Background: Brain metastases commonly occur in patients with metastatic melanoma and are associated with a poor prognosis. Only a few chemotherapeutic agents have been shown to be potentially active. Resistance to chemotherapy is one of the main limitations to treatment. A key mechanism of resistance is O6-methylguanine-DNA methyltransferase (MGMT). The methylation of its promotor could inhibit the activity of this enzyme; consequently, it is very important to evaluate the methylation status of all available specimens. Case Report: We report the case of a long-surviving patient in whom combination treatment with an alkylating agent inhibiting MGMT, such as temozolomide, was useful in clinical control of the disease.| File | Dimensione | Formato | |
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