United in Hope:

International PWS Conference

24-28 June 2025

United in Hope Logo

Special Announcement!

IPWSO is pleased to announce a new partnership with the Prader-Willi Syndrome Association | USA (PWSA | USA), and the Foundation for Prader-Willi Research (FPWR) to host United in Hope – an International PWS Conference to be held June 24-28, 2025 at the Arizona Grand Resort and Spa in Phoenix, Arizona!The conference theme, “United in Hope”, reflects this unique collaboration, which we anticipate will serve as a catalyst for the largest international PWS conference ever held. Please hold the dates firmly in your diary and further information will be made available in due course



2025 Conference Hotel | Arizona Grand Resort & Spa


Nestled at the base of America’s largest urban park and wilderness preserve, Arizona’s only AAA Four Diamond all-suite resort features spacious one and two-bedroom suites. Whether meeting with colleagues or vacationing with friends, gracious service, creative culinary delights and unique recreational activities await.


The residential-style look of all 744 guest suites at the Arizona Grand Resort & Spa provides resort guests with a true “home away from home” experience.

How to Get to Arizona, USA

Phoenix Sky Harbor International Airport is commonly referred to as Sky Harbor Airport. It is Arizona’s largest and busiest airport and is 6 miles (approx. 10 km) from the Arizona Grand Resort and Spa. It is home to 24 airlines offering nonstop flights from Phoenix to more than 120 domestic destinations and 26 international destinations.  There are a number of ways to travel from Sky Harbor Airport to the Arizona Grand Resort and Spa. A taxi will cost approximately $18.   

Travel Fellowships – United in Hope

IPWSO is delighted to offer a limited number of Travel Fellowships to people who wish to attend the United in Hope: International PWS Conference but could not do so without financial support. The closing date for applications is 28 June 2024.

This scheme is sponsored by Friends of IPWSO (USA), a non-profit organisation.

Future conferences

Has your Association thought about hosting an IPWSO conference? In the past these have been held in the Netherlands, Norway, Italy, USA, New Zealand, Romania, Taiwan, UK, Canada, Cuba and most recently Ireland. In 2025 we are delighted to be returning to the USA.

If your association is interested in hosting a future conference do contact us.