Other treatments for IPF, such as the bromodomain containing 4 (BRD4) inhibitor JQ1, the type-2 histone deacetylase 2 (HDAC) inhibitor spiruchostatin A, and suberoylanilide hydroxamic acid, may also be useful for treatment of pneumoconiosis [48–50]. Here, BRD4 is linked to idiopathic pulmonary fibrosis.