Using lithium to prevent cognitive decline after brain radiotherapy in children

Lithium Treatment to Prevent Cognitive Impairment After Brain Radiotherapy

Phase 2 Interventional Region Stockholm · NCT06051240

This study is testing if taking lithium can help prevent memory and thinking problems in children who have survived brain tumors and received radiation therapy.

Quick facts

PhasePhase 2
Study typeInterventional
Enrollment84 (estimated)
Ages5 Years and up
SexAll
SponsorRegion Stockholm Government
Drugs / interventionsradiation
Locations2 sites (Solna, Stockholm County and 1 other locations)
Trial IDNCT06051240 on ClinicalTrials.gov

What this trial studies

This clinical trial investigates the effectiveness of oral lithium treatment in preventing cognitive decline in pediatric brain tumor survivors who have undergone brain radiotherapy. It is a randomized, placebo-controlled, double-blinded study that will assess cognitive processing speed and other neuropsychological outcomes over a period of 6 months to 2 years. Participants will include children aged 5 and older who have received cranial radiation within the last 7 years. The study aims to explore the safety and tolerability of lithium while evaluating its potential neuroprotective effects.

Who should consider this trial

Good fit: Ideal candidates are children aged 5 to 18 who have received cranial or craniospinal radiation for brain tumors within the last 7 years.

Not a fit: Patients with renal failure, cardiac issues, or those who are pregnant or breastfeeding will not benefit from this study.

Why it matters

Potential benefit: If successful, this treatment could significantly improve cognitive outcomes and quality of life for pediatric brain tumor survivors.

How similar studies have performed: While there is limited research on lithium for this specific purpose, similar neuroprotective approaches have shown promise in other contexts.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Age \>5 years.
* Age \<18 years at time of radiotherapy.
* Has received cranial/craniospinal radiation treatment of brain tumor within the last 7 years.
* Adequate contraceptive method to prevent pregnancy\* during the entire lithium treatment period and six months thereafter.
* Negative pregnancy test\* at screening, at start of study treatment, and monthly thereafter.
* Written informed consent from patient and/or caregiver.

Exclusion Criteria:

* Allergy/hypersensitivity to lithium or any of the excipients
* Renal failure (Cystatin C derived Glomerular Filtration Rate \< 60).
* Cardiac failure or heart disease, including Brugada syndrome (or family history thereof).
* Uncontrolled hypothyroidism.
* Pregnancy or breast feeding.
* Severe fluid or electrolyte imbalance.
* Karnofsky-Lansky score \< 60.
* Other condition deemed incompatible with inclusion in this study (estimated 2 year survival prognosis less than 25 %, expected poor protocol compliance, inability to swallow tablets, language difficulties).
* Inclusion in other study protocol precluding inclusion in this study.

Where this trial is running

Solna, Stockholm County and 1 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Cognitive ImpairmentCognitive DeclineRadiotherapy Side EffectRadiotherapyComplicationsBrain TumorMemory ImpairmentLate Effect of Radiation
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.