An Australian data scientist designed an experimental mRNA therapy that shrank tumors in his pet after conventional treatment failed An Australian data scientist has used ChatGPT to develop a potential treatment for his dog after it was diagnosed with a deadly form of cancer. Two years ago, Paul Conyngham’s staffy-shar pei cross Rosie was diagnosed with mast cell cancer, an aggressive form of the disease in dogs. Veterinary surgery and chemotherapy slowed the tumors but failed to shrink them.