What are your thoughts on using abatacept for RA-associated ILD in a patient undergoing treatment for CLL with zanubrutinib, and how would you assess the potential increased risk of infection in this context?  

Zanubrutinib is an inhibitor of Bruton tyrosine kinase which is part of an important signaling pathway for B cells. BTK inhibition prevents B cell activation, proliferation, and survival. It is useful for B cell malignancies such as CLL.I have two concerns about using abatacept and zanubrutinib toge...