Cardiol Therapeutics Announces Year-End 2024 Update on Operations

Reported positive data from the Phase II MAvERIC-Pilot study investigating the impact of CardiolRx™ administered to patients with symptomatic recurrent pericarditis; results support advancing to the Phase III MAVERIC trial

Completed patient enrollment in the Phase II ARCHER trial evaluating CardiolRx™ in patients
with acute myocarditis, with topline data expected in Q2 2025

CardiolRx™ granted U.S. FDA Orphan Drug Designation for the treatment of pericarditis,
which includes recurrent pericarditis

Cash and cash equivalents of $30.6 million as of December 31, 2024,
to fund operations into Q3 2026

Toronto, Ontario--(Newsfile Corp. - April 1, 2025) - Cardiol Therapeutics Inc. (NASDAQ: CRDL) (TSX: CRDL) ("Cardiol" or the "Company"), a clinical-stage life sciences company focused on developing anti-inflammatory and anti-fibrotic therapies for the treatment of heart disease, announced today its year-end 2024 update on operations following the filing of its audited Financial Statements and Management's Discussion and Analysis for the year ended December 31, 2024. Both are available under the Company's profile on EDGAR at www.sec.gov, on SEDAR+ at sedarplus.ca and on the Company's website at cardiolrx.com.

"Cardiol Therapeutics achieved significant milestones during 2024 which have supported advancing CardiolRx into the Phase III MAVERIC trial in recurrent pericarditis - a debilitating heart disease that remains underserved by available medicine," said David Elsley, President and Chief Executive Officer of Cardiol Therapeutics. "We are very encouraged by the compelling Phase II data presented at the American Heart Association Scientific Sessions 2024, demonstrating that CardiolRx™ reduced pericarditis pain, inflammation, and episodes of recurrence in patients presenting with a high degree of disease burden. We were also pleased that our Phase II ARCHER trial surpassed expectations by completing patient enrollment ahead of schedule, positioning the Company to report topline data in Q2. With operations funded into the second half of 2026, we remain committed to advancing our late-stage clinical development pipeline in pericarditis and myocarditis, and to progressing the IND-enabling program to support the clinical development of CRD-38 for heart failure. We would like to express our sincere gratitude to our clinical collaborators and patients whose support has enabled our progress."