NewslettersPulmonary Cell News Methylated circPTK2 As a Driver of Fibroblast Activation in Pulmonary Fibrosis By Noshin Noorjahan - December 11, 2025 0 89 Researchers identified circPTK2, a fibroblast-specific circular RNA that is significantly upregulated in pulmonary fibrosis patients and experimental models. [Molecular Therapy] AbstractGraphical Abstract