Drugmaker Acelyrin Inc. has raised $300 million in new venture capital to run late-stage clinical trials of a drug that could treat certain forms of arthritis and other conditions and compete with top-selling medications. New investor Access Biotechnology led this financing for Acelyrin, which has secured more than $550 million in total venture financing. Acelyrin says it has funds to complete clinical trials which could lead to U.S. regulatory approval of its drug, izokibep, in psoriatic arthritis and axial spondyloarthritis.