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Welcome to

One Retinoblastoma World 2026

San Antonio, Texas

Saturday, September 12 – Monday, September 14, 2026

The 8^th One Rb World Conference will take place immediately before the 58^th World Congress of the International Society of Pediatric Oncology, which will be held in San Antonio, September 15-18, 2026.

Welcoming retinoblastoma patients, survivors, family members, medical professionals and scientists, we look forward to sharing three full days of One Rb World programming, community and collaboration in the Lone Star State.

One Rb World 2026 will be hosted by World Eye Cancer Hope USA, organized together with Jesse Berry M.D., Director of Ocular Oncology and Retinoblastoma at Children’s Hospital Los Angeles (CHLA); Patricia Chévez-Barrios, M.D., Director of Ophthalmic Pathology Residency Program and Professor of Pathology and Genomic Medicine at Houston Methodist Hospital in Texas; Maura Di Nicola M.D., Assistant Professor of Clinical Ophthalmology at Bascom Palmer Eye Institute in Miami, Florida; and Dan S. Gombos, M.D., Professor at the Department of Head and Neck Surgery in the Division of Surgery at the University of Texas MD Anderson Cancer Center in Houston, Texas.

We recognize our 2026 conference falls during Rosh Hashana, and we apologize for any conflicts this may create. We hope many in our community will still be able to participate, and we remain committed to making the conference as accessible and inclusive as possible.

Download the 2026 One Rb World Sponsorship Packet

Conference Program

Our One Rb World program will take place over three days. We offer a virtual option so our global community can join even if travel to San Antonio is not possible. Local time during the conference will be in Central Daylight Time (CDT).

We will discuss aspects of early detection and diagnosis, medical care, psychosocial supports, and survivorship on a local and global scale.

Learn More About the 2026 Program

Check Out Our 2026 Conference Speakers

2024 One Rb World Conference Report

Child Life Program

A table is covered with a large sheet of white paper featuring hand-drawn, decorative letters spelling out the words: One Retinoblastoma World 2024. The words are outlined in various colours and patterns, and the letters are intricately designed with stripes, flowers, polka dots, and googly eyes. On the table, a container holds colorful markers; sheets of stickers featuring tropical and fun designs, such as flowers, palm trees, animals, and beach items; large, playful googly eyes; hand-drawn outlines of children’s hands.

One Rb World welcomes all patients, survivors, and family members! We are delighted to provide a full program of child life activities on September 12-14 for children diagnosed with retinoblastoma, their siblings, and the children of adult survivors and conference speakers.

The program will be led by Certified Child Life Specialist, Morgan Livingstone, a dedicated member of the WE C Hope team, together with local child life leaders. As well as free play for all ages, planned activities help children explore, understand, and live well with their individual experiences of eye cancer.

2026 Child Life Program

Tickets and Registration

A lively group of around 60 people gather in front of two trolley buses from E Noa Tours. Scenic mountains rise in the background. The group, diverse in age and background, is smiling, laughing, and making the friendly shaka hand sign. Many are wearing colorful leis, headbands, and sunglasses, adding to the joyful, celebratory vibe.

We have a variety of ticket prices for families and survivors, and a reduced rate for attendees from countries classified by the World Bank as Low-Income and Lower-Middle-Income.

Every child attending the child life program must be registered.

Details of virtual registration will be available closer to the event.

Early Bird registration closes February 1, 2026 – register now to save and secure your seat at this cornerstone event in the retinoblastoma calendar.

Ticket Options and Registration Details

Why Joining In-Person Is So Valuable

Our Conference Hotel

A serene sunset view of the Hyatt Regency on the San Antonio River Walk. On the far bank, street lights begin to illuminate the white and gold hotel, a modern multi-storey building with large windows. One level features a cozy restaurant with outdoor seating under fairy lights, nestled among lush greenery. Soft green foliage and tropical landscaping around the hotel and along the narrow river walk creates a calming, garden-like feel. A vibrant blue tour boat full of people floats past the hotel, gliding through beautiful blue green water that shimmers with tranquil light and colour from buildings and boats.

One Rb World 2026 will take place at the Hyatt Regency San Antonio River Walk, a beautiful hotel perfectly located at the heart of the entertainment, cultural, and historic center. The SIOP convention center is less than 10 minutes’ stroll away along the scenic River Walk.

Stay with our One Rb World community at the Hyatt Regency San Antonio River Walk, where San Antonio’s story, soul, and style come alive!

Secure your group room rate when you book before August 27, 2026!

Click here to book your hotel room now!

Discover our 2026 Conference Hotel and Room Rate

One Rb World 2026 Merch

A cheerful family of four pose at a rugged coastal beauty spot with mountains sweeping down to the ocean in the background, under a partly cloudy sky. They are casually dressed, with two members wearing purple T-shirts featuring a vibrant One Rb World 2024 conference design including palm trees, hibiscus, and waves. The man on the right wears a maroon World Eye Cancer Hope T-shirt and a blue cap. The three adults are wearing sunglasses. They are all making funny faces and hand gestures that perhaps express thinking hard, pensive, playful, and delight. They exude lighthearted fun and clearly enjoy the moment.

Wear your care and share solidarity with our One Rb World community! At our online store, you’ll find branded apparel, caps, bags, mugs, and much more, including unique gold ribbon and One Rb World 2026 designs.

Items are printed on demand, so shop early to ensure your order arrives before a planned event!

Check out the designs and sport your support for all affected by Rb, for life!

Visit our Merch store today!

Read the One Rb World 2024 Conference Report

The 7^th One Rb World welcomed 175 guests to Honolulu, Hawaii, October 15 – 17, 2024. Our conference report showcases three days of diverse sessions, child life programming, community-building social events, and participant feedback.

Download the full 2024 Conference Report

Travel Facts – Everything You Need to Know

A scenic view of the San Antonio River Walk in Texas. A stone footbridge arches gracefully over a narrow canal, surrounded by lush trees and foliage. Several people walking on the bridge, and a group of riverboat tourists, are enjoying the sunny day. The flat-bottomed riverboat has red railings and its driver, wearing a straw hat and blue shirt, steers the vessel from the rear. This charming, peaceful scene captures the early hints of autumnal colour just beginning to show on a sprinkling of vibrant yellow and gold leaves.

Texas is the second-largest and second-most populous state in the USA, with vast, captivating landscapes, cultural diversity, and rich history. Located in south-central Texas, San Antonio is a vibrant city with a blend of cultures and a warm, welcoming vibe.

You’ll find direct flights from across the USA and major international hubs. Here are some practical points for planning your visit to San Antonio for One Rb World 2026.

Texas Travel Facts

Stay Longer and Explore Texas

A group of people paddle colorful kayaks – blue, pink, yellow, and red – along a calm, woodland section of the San Antonio River. The serene waterway is flanked on both sides by the Mission Reach Trail, a paved pedestrian and biking path running just above the river’s edge, partially shaded by mature green trees. In the distance, the historic Tower Life Building, with a green-topped spire, rises prominently against a clear blue sky, marking the proximity to downtown San Antonio.

Texas in September offers a wonderful balance of late summer sunshine, restorative natural beauty, vibrant culture, captivating history, and unique activities.

Relax on glorious Gulf Coast beaches, hike through scenic Hill Country, or immerse yourself in vibrant cultural festivals like Jazz SA Live and FOTOSEPTIEMBRE. The natural beauty of blooming wildflowers, expansive state parks, and stunning sunsets create a perfect backdrop for adventure and relaxation.

Discover San Antonio and Texas

Travel Responsibly in San Antonio

The Alamo, a historic Spanish mission and fortress compound in San Antonio, Texas. The iconic stone façade is bathed in warm evening sunlight against a bright blue sky. A Texas flag flutters in the breeze on a flagpole to the left, and a historic cannon is visible below. The stone-paved courtyard leading to the Alamo is surrounded by mature oak trees, while a central lawn is roped-off from visitors.

Texans take great pride in their land, history, and hospitality. As you explore San Antonio, its rich cultural heritage, vibrant communities, and unique natural beauty, we ask you to be aware and visit with care.

Together, we can support local people, respect and protect shared spaces, and help preserve the spirit of this historic city for all who call it home.

Here are our top tips for traveling responsibly to One Rb World 2026.

Responsible Travel in Texas

Thank You to Our Generous 2026 One Rb World Conference Sponsors

Gold Tier

The Danhakl Family Foundation

Silver Tier

Anonymous Friend

Bronze Tier

And Sincere Appreciation for Our Fabulous 2026 Partners!

Partner With Us for One Rb World 2026!

Would you like to partner with us to host the 8th One Retinoblastoma World conference, to help bring the best care to children with eye cancer, survivors, and families across the USA and around the world?

Learn more about how to partner with us.