The Types dimension of the AAV Gene Therapy Drugs market differentiates products by vector architecture, influencing manufacturing complexity and clinical performance. Single‑stranded AAV (ssAAV) remains the baseline platform, representing roughly 45% of the portfolio due to its established safety profile and scalable production. Self‑complementary AAV (scAAV), comprising about 30%, offers accelerated transgene expression by bypassing second‑strand synthesis, a key advantage for acute indications. Hybrid capsids, formed by capsid protein recombination, capture roughly 15% of the market, delivering enhanced tropism and reduced pre‑existing immunity. Engineered capsids, generated through directed evolution, occupy the remaining 10%, targeting niche tissues and enabling higher payload capacity. These type categories directly affect cost of goods, dosing regimens, and market adoption, thereby contributing proportionally to the total market valuation within the broader segmentation framework.