fanos
Posts:18
Crizotinib apparently does not effectively penetrate the BBB. Since it is the recommended first line treatment for ALK and ROS1 positive lung cancers, is there a preventative treatment (drug or radiation) recommended for a patient with no evidence of metastasis to the brain?
Thank you,
fanos
Forums
Reply # - April 13, 2016, 06:43 AM
Hi fanos,
Hi fanos,
Welcome to GRACE. There isn't a preventive treatment recommended at this time, although there is a strategy for monitoring and treatment with focused radiation, a strategy which is discussed by Dr. Camidge in a GRACE podcast published just today. And if necessary to control disease in the brain, the second generation ALK/ROS1 inhibitors are better at crossing the blood brain barrier.
In the next few days, look for another GRACE podcast addressing the current lack of evidence favoring the use of those second generation inhibitors as first-line treatment.
In small cell lung cancer, which frequently spreads to the brain, prophylactic cranial irradiation (PCI), which is preventive whole brain radiation, is used to prevent brain metastases. But because the overall survival of ALK and ROS1 patients often stretches out to several years, PCI is not recommended because the long term effects of such radiation are more likely to appear over those extended periods of time.
JimC
Forum moderator
Reply # - April 15, 2016, 06:43 AM
Hi fanos,
Hi fanos,
I just wanted to clarify that crizotinib does penetrate the bbb for some people though it's not known how to tell who that will be without trying.
All best,
Janine