So at this time, we sort of have a sequencing issue, right? We know that covalent inhibitors are approved and effective, and we have durable data for them. And we know that non-covalent inhibitors work after covalent inhibitors. And so do we want to sort of pull the trigger and give a non-covalent inhibitor first, or do we wait for them to relapse? I think at the end of the day, research will help us determine the answer to this...
So at this time, we sort of have a sequencing issue, right? We know that covalent inhibitors are approved and effective, and we have durable data for them. And we know that non-covalent inhibitors work after covalent inhibitors. And so do we want to sort of pull the trigger and give a non-covalent inhibitor first, or do we wait for them to relapse? I think at the end of the day, research will help us determine the answer to this. And so there’s an ongoing trial comparing pirtobrutinib, a non-covalent BTK inhibitor, to the covalent BTK inhibitors in MCL, in relapsed MCL. When that study reads out, you might actually learn that a non-covalent inhibitor is a better strategy to use before a covalent inhibitor. Until we have data like that, I think that the current paradigm will be covalent inhibitors as part of the front or second line, and then non-covalent inhibitors are sort of a later line therapy.
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