Crizotinib associated interstitial pneumonitis

Last revised by David Luong on 6 Feb 2022

Crizotinib associated interstitial pneumonitis is a type of drug-induced lung disease precipitated by a tyrosine kinase/anaplastic lymphoma kinase (ALK) inhibitor Crizotinib used in the treatment of certain forms of non-small cell lung cancer that have certain mutations including the ROS1 mutation and the anaplastic lymphoma kinase (ALK) fusion oncogene positivity.

The overall reported incidence of pneumonitis was ~ 2% for all grades 3.

It can occur at any time after commencement of the agents with a median onset of 23 days (range 3-763 days) from the initiation of crizotinib therapy according to one study 1. Although rare, high mortality rates have been reported 1. Some publications report two forms of lung disease 5.

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