SIOP is delighted to share that registration is now open for One Retinoblastoma World 2026, taking place in San Antonio, Texas, from 12–14 September 2026.

The 8th One Rb World Conference will be held immediately before the 58th World Congress of the International Society of Pediatric Oncology (15–18 September 2026), creating a unique opportunity for patients, survivors, families, clinicians and researchers to come together for a full week of collaboration and community.

Hosted by World Eye Cancer Hope USA, the conference is organised with leading experts including Jesse Berry, MD (Children’s Hospital Los Angeles), Patricia Chévez-Barrios, MD (Houston Methodist Hospital), Maura Di Nicola, MD (Bascom Palmer Eye Institute), and Dan S. Gombos, MD (University of Texas MD Anderson Cancer Center).

The programme will explore early detection and diagnosis, medical care, psychosocial support, and survivorship—locally and globally. A virtual participation option will ensure worldwide access, with sessions delivered in Central Daylight Time (CDT).

A dedicated Child Life Programme, led by Certified Child Life Specialist Morgan Livingstone and local specialists, will offer structured activities and free play for children with retinoblastoma, siblings, and children of survivors and speakers.

The conference will take place at the Hyatt Regency San Antonio River Walk, just a short walk from the SIOP Congress venue. Delegates attending One Rb World 2026 receive a 10% discount for SIOP 2026 registration.

We warmly encourage the SIOP community to register, share, and join this cornerstone event in the retinoblastoma calendar.