Welcome to the OSSD!

The Organization for the Study of Sex Differences (OSSD) is a unique scientific organization that seeks to enhance knowledge of sex/gender differences by facilitating interdisciplinary communication and collaboration among scientists and clinicians of diverse backgrounds.

Benefits of OSSD Membership

Among many reasons to join OSSD, here are just a few:

  • Education and networking
  • Discount on annual meeting registration
  • Strong trainee support with numerous travel and poster awards!


Cancellation of OSSD2020: Due to ongoing concerns about the spread of the novel coronavirus in the U.S., with California and LA County declaring states of emergency, the leadership of the OSSD has elected to cancel our May 4-7, 2020 meeting at the Marriott Marina del Rey. We are grateful for your support and understanding during these difficult times, but know that it necessary to treat the public health of our meeting participants as a priority.

Reimbursement: We are going to reimburse registration and abstract fees for all who have already paid. Alternatively, if you would like to transfer your OSSD2020 registration fees to the OSSD2021 meeting in Calgary and avoid any registration fee increases that may occur, please email the OSSD Central Office at [email protected] with your request. Be sure to include "2020 Refund" in the subject line of your email. Emails must be received by April 1. For anyone who reserved a room at the Marriott Marina del Rey through the link provided on the OSSD website, please phone the Marriott at 1-888-236-2427 to cancel your reservation without penalty. Be sure to have your reservation confirmation number when you phone to cancel. If you need any assistance, please contact the OSSD Central Office at [email protected].

Program: We are grateful to Jaclyn Schwarz and her program committee for their hard work developing an excellent program for OSSD2020. We are equally grateful for our members and friends who submitted session and talk proposals. Efforts to transfer much of the final 2020 program to the 2021 meeting in Calgary are underway. Dr. Schwarz will communicate with conveners and speakers about options moving forward.

Awards: We are grateful to Kathryn Lenz and Farrah Madison and their awards committee for selecting the 25 OSSD travel award and young investigator recipients. While we cannot provide the monetary awards without attendance at OSSD2020, we will provide award documentation for recipients (in other words, please retain this award on your CVs/resumés). We also want to thank Art Arnold and the leadership of the OSSD for securing R13 funding from the FDA Office of Women’s Health to support these efforts. We look forward to selecting a new group of travel awardees and young investigators for OSSD2021.

While this was a very difficult decision, we are confident that this was the right decision. Please continue to support the OSSD through membership and dissemination of your research pertaining to sex as a biological variable! Tag us in all relevant tweets @OSSDtweets. In May, I will be stepping down as your President and welcoming Rhonda Voskuhl to lead the OSSD and our 2021 meeting in Calgary.

All the best,


Sabra L. Klein, Ph.D., President of the OSSD
Professor of Molecular Microbiology and Immunology
Johns Hopkins University