A Tribute to Daniel L. Kastner, MD, PhD (1951–2026) The rheumatology, genetics and NIH communities mourn for Dr. Daniel L. Kastner, who died on July 28, 2026, in Bethesda, Maryland, at age 74. https://t.co/Qti4Nay6NX https://t.co/gjmY7G4XAc