NCI Definition: A rare disorder of unknown etiology characterized by distention of the lymph node sinuses and sinusoidal histiocytic infiltration. The histiocytes characteristically contain ingested lymphocytes. Patients present with cervical lymphadenopathy, fever, leukocytosis, and hypergammaglobulinemia. It can affect extranodal sites, including skin, bones, and the respiratory tract. It usually regresses spontaneously. 
There is 1 clinical trial for rosai-dorfman disease, of which 1 is open and 0 are completed or closed. Of the trial that contains rosai-dorfman disease as an inclusion criterion, 1 is phase 2 (1 open).
Cobimetinib is the most common intervention in rosai-dorfman disease clinical trials.
2. The AACR Project GENIE Consortium. AACR Project GENIE: powering precision medicine through an international consortium. Cancer Discovery. 2017;7(8):818-831. Dataset Version 8. This dataset does not represent the totality of the genetic landscape; see paper for more information.