Trilateral Retinoblastoma: Incidence and Outcomes (GS-TRIO)

April 11, 2024 updated by: Marcus de Jong, Amsterdam UMC, location VUmc

Global Survey of Trilateral Retinoblastoma: Incidence and Outcomes

Patients with heritable retinoblastoma are at risk to develop an intracranial brain tumor, which is often fatal. The investigators intend to look at the incidence and survival of trilateral retinoblastoma (which is a brain tumor that can either be located in the pineal gland or elsewhere in the brain) in retinoblastoma patients globally. All retinoblastoma patients from participating centers will be included. The investigators hypothesize that the apparent incidence of trilateral retinoblastoma (especially the usually later diagnosed pineal trilateral retinoblastoma) in low-income countries will be lower because of low chances of surviving the ocular tumors at about 50% and also because of possible under-diagnosis. Therefore, as retinoblastoma care improves in low-income countries the incidence of (pineal) trilateral retinoblastoma might go up. Knowledge about incidence and survival can help improve health practices in parts of the world where this might be needed. Therefore this global study firstly aims 1) to evaluate survival after trilateral retinoblastoma and factors influencing survival and 2) to evaluate incidence of trilateral retinoblastoma by country income level. The study will run from 2024 through 2027.

Study Overview

Detailed Description

This study will adhere to the Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) statement for cohort studies and to the Guidelines for Accurate and Transparent Health Estimates Reporting (GATHER) statement. The study is designed as a prospective cohort study of retinoblastoma patients diagnosed in one year from as many as possible worldwide treatment centers. The methods of patient recruitment are partly similar to previous global retinoblastoma studies. Data will be extracted from a the Global Retinoblastoma study follows up patients who will present with retinoblastoma in 2024-2027.

All unique trilateral retinoblastoma patients (cases) and all other retinoblastoma patients (controls) with will be included in the incidence analysis. For survival analysis follow-up data will be required.

After initial submission of case data by participating centers three years after the start of the study information on follow-up, metastasis, eye globe salvage, laterality, diagnosis of trilateral retinoblastoma and survival outcome will be available. At a later stage participating centers that reported trilateral retinoblastoma cases will be contacted again for additional information. All trilateral retinoblastoma patients will be included in the analysis, regardless if additional information is provided.

The investigators will request the following additional data:

  • location (pineal, supra-/parasellar, other location (e.g., 3rd ventricle)),
  • treatment for trilateral retinoblastoma,
  • if not clear from initial report: cause of death (trilateral retinoblastoma, side effect of treatment, other),
  • details on (germline) RB1 mutation.
  • country of residence,
  • family history of retinoblastoma,
  • was patient symptomatic or asymptomatic when trilateral retinoblastoma was diagnosed (if symptomatic: what where the symptoms? If asymptomatic: how was the tumor diagnosed),
  • information on trilateral retinoblastoma confirmation (e.g., biopsy, CSF, treatment response, disease progression),
  • treatment for trilateral retinoblastoma,
  • was the treatment with intent to cure (active treatment) or was the intent palliative,
  • maximum diameter (mm) of tumor,
  • wat trilateral retinoblastoma metastasized at the time of diagnosis,
  • was this case published (if yes: where?),
  • also missing data during the initial submission phase will be requested again.

If feasible additionally all centers that will also be asked if they can retrospectively provide data on trilateral retinoblastoma patients of whom retinoblastoma was not diagnosed in 2024 and were diagnosed with trilateral retinoblastoma in the years 2020 through 2027.

Outcome measures

Incidence and risk factors of developing trilateral retinoblastoma will be analyzed in the following manner (cases and controls who were diagnosed with retinoblastoma in 2024):

  • overall incidence of pineal and non-pineal trilateral retinoblastoma in all retinoblastoma patients, bilateral retinoblastoma patients and heritable retinoblastoma patients (all patients with wither bi- or trilateral retinoblastoma, familial retinoblastoma or a proven germline RB1 mutation will be considered heritable),
  • estimate possible under-diagnosis of trilateral retinoblastoma in lower-income countries,
  • potential modifiers of incidence (risk of developing trilateral retinoblastoma) will be analyzed: pineal versus non-pineal trilateral retinoblastoma, age at diagnosis of retinoblastoma (e.g., < or ≥ 12 months old), country income level.

Survival analysis of trilateral retinoblastoma alone (all cases who were diagnosed with trilateral retinoblastoma in the years 2024 through 2027):

  • overall and trilateral retinoblastoma specific survival will be analyzed,
  • potential predictors of survival (e.g., pineal versus non-pineal trilateral retinoblastoma, tumor size, previous treatment for retinoblastoma, treatment for trilateral retinoblastoma, symptomatic versus asymptomatic, RB1 mutation, active treatment, metastastic disease, country income level).

Survival analysis of trilateral retinoblastoma in the entire retinoblastoma cohort (cases and controls who were diagnosed with retinoblastoma in 2024-2027):

  • trilateral retinoblastoma mortality versus other-cause mortality (also stratified by country income level and al versus non-pineal trilateral retinoblastoma),
  • event-free survival (with an event defined as trilateral retinoblastoma diagnosis) (also stratified by country income level and al versus non-pineal trilateral retinoblastoma),
  • event-free survival will be analyzed for potential predictors (age at diagnosis of retinoblastoma, previous systemic chemotherapy, previous external beam radiotherapy, country income level).

Other analyses (all cases who were diagnosed with trilateral retinoblastoma in the years 2024 through 2027):

  • verify independence between the age at diagnosis of retinoblastoma and trilateral retinoblastoma,
  • verify the period that retinoblastoma patients are at risk to develop trilateral retinoblastoma,
  • whether trilateral retinoblastoma is usually diagnosed at a later date if the diagnosis of retinoblastoma was before the age of 12 months,
  • evaluate and more precisely estimate of the previously estimated lead time between symptomatic and asymptomatic trilateral retinoblastoma of about 1 year.

The income level of a country will be determined by the at the time most recent World Population Prospects by the Department of Economic and Social Affairs of the United Nations.

Statistical analysis

Incidence will be reported as proportions with 95% exact binomial confidence intervals. Cumulative incidence of trilateral retinoblastoma curves will be created, accounting for death from other causes without diagnosis of trilateral retinoblastoma.

Overall survival (all-cause mortality), disease specific survival and event free survival were performed. An event is defined as being diagnosed with trilateral retinoblastoma.

The Kaplan-Meier product-limit method and the log rank test will be used to analyze survival data. A Cox proportional hazards model will be employed to analyze potential predictors factors. Schoenfeld residuals will be used to check the proportionality assumption of the model.

The investigators each case with a unique identifier for stratification based on the center to account for heterogeneity between these centers.

In case of subgroup analyses original P-values will presented, as well as adjusted p-values corrected for multiple hypothesis testing according to Bonferroni's method.

Study Type

Observational

Enrollment (Estimated)

4351

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact Backup

Study Locations

    • Noord-Holland
      • Amsterdam, Noord-Holland, Netherlands, 1082HV

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Sampling Method

Probability Sample

Study Population

As many centers in the world will be/have been contacted to participate in this study to provide information about their population of retinoblastoma and trilateral retinoblastoma patients. This study will come as close as possible to an overview of this disease worldwide.

Description

Inclusion Criteria:

  • patients diagnosed with retinoblastoma

Exclusion Criteria:

  • none

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Number of participants (retinoblastoma patients) that will be diagnosed with trilateral retinoblastoma (incidence)
Time Frame: 6 years
The proportion of patients that be diagnosed with trilateral retinoblastoma in the included cohort of retinoblastoma patients
6 years
Overall and event-free survival after being diagnosed with trilateral retinoblastoma
Time Frame: 6 years
The overall and event free survival of patients diagnosed with trilateral retinoblastoma in the included cohort of retinoblastoma patients.
6 years

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Investigators

  • Principal Investigator: Marcus de Jong, MD PhD, Amsterdam UMC

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

January 1, 2024

Primary Completion (Estimated)

December 31, 2027

Study Completion (Estimated)

December 31, 2029

Study Registration Dates

First Submitted

April 4, 2024

First Submitted That Met QC Criteria

April 11, 2024

First Posted (Actual)

April 16, 2024

Study Record Updates

Last Update Posted (Actual)

April 16, 2024

Last Update Submitted That Met QC Criteria

April 11, 2024

Last Verified

April 1, 2024

More Information

Terms related to this study

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

IPD Plan Description

This decision depends on the policy of the the global retinoblastoma study 2024-2027.

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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