Defactinib Fails Again as a Maintenance Therapy for Mesothelioma
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Defactinib Fails Again as a Maintenance Therapy for Mesothelioma

ByAlex Strauss

There has been another setback for a drug that showed promise as a maintenance therapy for mesothelioma. Defactinib is a focal adhesion kinase (FAK) inhibitor. FAK is a signaling pathway that allows stem cells to give rise to new cancer cells. The developers of defactinib hoped that FAK inhibition would help keep mesothelioma tumors from growing back after chemotherapy. But a team of international researchers has once again concluded that the drug does not work as a maintenance therapy for mesothelioma. In Search of a Maintenance Therapy for Mesothelioma Malignant pleural mesothelioma is an aggressive cancer that is very hard to treat. Standard chemotherapy drugs like pemetrexed, cisplatin, gemcitabine and vinorelbine can sometimes shrink tumors, but they usually come back. Doctors…

Scrubbed Trial May Not Be the End for Mesothelioma Drug
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Scrubbed Trial May Not Be the End for Mesothelioma Drug

ByAlex Strauss

The makers of the once-promising experimental mesothelioma drug defactinib have announced that they will stop a clinical trial of the drug early because, by itself, it does not appear to help. But this may not be the end of the road for defactinib in mesothelioma treatment. Defactinib (VS-6063) had been the leading compound for its manufacturer, Boston-based Verastem. While standard mesothelioma chemotherapy drugs like pemetrexed, cisplatin, gemcitabine and vinorelbine can sometimes shrink mesothelioma tumors, they also increase the percentage of stem cells which can give rise to new cancer. Defactinib was designed to help keep malignant mesothelioma patients from relapsing by inhibiting a crucial signaling pathway (FAK) inside the stem cells. Early studies were encouraging, but a recent review of…