41ST ANNUAL MEETING OF THE HISTIOCYTE SOCIETY

***POSTER GUIDELINES ARE NOW AVAILABLE!  CLICK HERE FOR MORE INFORMATION.***

The 41st Annual Meeting of the Histiocyte Society will take place September 28-30, 2025 in Seattle, WA USA and online
with Board and Committee meetings taking place on September 27.

Registration is now open!

Special Note: 

As we prepare for the upcoming Histiocyte Society Annual Meeting this September, we want to take a moment to acknowledge the uncertainty many are feeling around the world. In times like these, the importance of connection, collaboration, and shared purpose becomes even more clear.

We recognize that global tensions may give some pause when considering international travel. The Histiocyte Society remains a scientific and apolitical organization—grounded in open dialogue, cross-border collaboration, and the pursuit of knowledge. Our mission transcends politics, and we are committed to creating a welcoming space where science, learning, and patient-focused progress remain at the forefront.

Our Annual Meeting is more than a conference—it is a space for global minds to come together, share new ideas, and inspire the future of research and care in histiocytic disorders. We hope you will join us and be part of the meaningful connections and advancements that can only happen when we gather in person.

We look forward to welcoming you to Seattle!

Kim Nichols, Histiocyte Society President, welcomes you to the 41st Annual Meeting of the Histiocyte Society: