Katrina Jane Allen, also known as Katie Allen, was a prominent pediatric allergist and politician. She was born on February 24, 1966 in Albury, New South Wales, Australia. Professor Allen died on 23 December 2025 in Melbourne, Victoria, aged 59, of cholangiocarcinoma. She was a leading pediatric allergist whose research significantly influenced the field. As a professor, she contributed to changes in pediatric allergology.[1]