Gene therapy market to reach $5.3 billion by 2028 with a CAGR of 19.8%. Key players include Novartis AG, Orchard Therapeutics, Celgene, Spark Therapeutics, Gilead Sciences, and Sibiono GeneTech. Market driven by genetic disease prevalence, tech advancements, and R&D investments. Challenges include high costs, manufacturing complexities, ethical concerns, and skill shortages. Future trends include CRISPR adoption, personalized medicine, and non-viral delivery systems.