The Autoimmune Diseases Treatment segmentation by type distinguishes four principal therapeutic classes: biologics, small‑molecule oral agents, cell‑based therapies, and gene‑editing approaches. Biologics, encompassing monoclonal antibodies and fusion proteins, dominate the market due to their established efficacy across multiple indications and represent roughly 55% of total revenues. Small‑molecule oral agents, primarily Janus‑kinase inhibitors and phosphodiesterase‑4 inhibitors, account for about 30%, driven by patient preference for oral administration and expanding pipeline activity. Cell‑based therapies, such as autologous mesenchymal stem‑cell infusions, contribute near 10% as niche solutions for refractory cases, while emerging gene‑editing platforms (CRISPR‑Cas9, base editing) hold less than 5% but signal long‑term growth potential. Each type adds distinct value: biologics secure the bulk of current market size, oral agents accelerate adoption rates, cell therapies diversify clinical options, and gene‑editing defines future innovation trajectories.