Related Experiment Video
Updated: Feb 1, 2026

In Ovo Xenografting of Patient-Derived Acute Lymphoblastic Leukemia (ALL) Cells (PDX-ALL)
Published on: August 1, 2025
Ocular manifestations in acute lymphoblastic leukemia: A five-year cohort study of pediatric patients
Cristiano de Queiroz Mendonca1, Marcelle Vieira Freire2, Simone Santana Viana3
1Postgraduate Program in Health Sciences, Federal University of Sergipe, Rua Itabaiana 758, Bairro São José, 49.015-110, Aracaju, Sergipe, Brazil.
Insights
Pediatric acute lymphoblastic leukemia (ALL) patients frequently develop ocular manifestations (OM), particularly ocular hypertension. Those on the 1999 protocol and at high relapse risk show a significantly higher incidence of OM.
Area of Science:
- Ophthalmology
- Pediatric Oncology
- Hematology
Background:
- Acute lymphoblastic leukemia (ALL) treatment can lead to various complications.
- Ocular manifestations (OM) in pediatric ALL patients require characterization to understand their impact and associations.
Purpose of the Study:
- To characterize ocular manifestations (OM) in pediatric patients undergoing treatment for acute lymphoblastic leukemia (ALL).
- To evaluate the association of OM with predictive risk factors for relapse, treatment protocols (1999 vs. 2009), gender, and cerebrospinal fluid infiltration.
Main Methods:
- A prospective cohort study included children and adolescents with ALL from January 2013 to December 2017.
- Ophthalmologic evaluations were performed at multiple time points during treatment.
- Ocular hypertension (OH) was defined as intraocular pressure >21 mmHg; visual loss (VL) as visual acuity <20/40.
Main Results:
- Of 55 patients, 18 (32.7%) presented OM, with OH (61.1%), retinal hemorrhage (22.2%), and VL (22.2%) being most common.
- A strong association was found between OM and high risk of relapse (p=0.035) and the 1999 protocol (p=0.022).
- Patients on the 1999 protocol had a 2.917 times higher risk of OM.
Conclusions:
- Pediatric ALL patients exhibit a high incidence of OM, often asymptomatic, which can progress to visual loss.
- Ocular hypertension is the most prevalent OM in this cohort.
- The 1999 treatment protocol and high relapse risk are significantly associated with an increased likelihood of developing OM.
Objective:
To characterize ocular manifestations (OM) of pediatric patients treating for acute lymphoblastic leukemia (ALL) and to evaluate whether they are associated with well-described predictive risk factors for relapse, protocol (1999 or 2009), gender and cerebrospinal fluid infiltration.
Methods:
A prospective cohort study was conducted in children and adolescents with ALL from January 2013 to December 2017. The patients underwent ophthalmologic evaluations before starting treatment (D0), on the eighth day (D8), at the 28th day (D28), and at six months (D6 months). Ocular hypertension (OH) was considered in results above 21 mmHg. Measures of visual acuity <20/40 were considered visual loss (VL).
Results:
Fifty-five patients were examined and 18 (32.7%) presented OM, been OH (61.1%), retinal hemorrhage (22.2%) and VL (22.2%) the most frequent finds. A strong association was found between patients with OM and those with a high risk of relapse (p = 0.035, Cramer V = 0.31) and who used the 1999 protocol (p = 0.022, Cramer V = 0.32). The risk of OM in patients from the 1999 protocol was 2.917 (CI = 1.099-7.742), while the risk of relapse it was 0.327 (CI 95% 0.107-0.999).
Conclusions:
Patients with ALL have a high incidence of OM due to the treatment and the disease itself, and it may even be asymptomatic and evolve with VL. Of these, we can highlight OH as the most prevalent. Patients submitted to the 1999 protocol and at high risk of relapse are more likely to present OM and these variables are strongly associated.
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