Real-world Study of Darafenib or Trametinib and Clofarabine for High-risk/Recurrent/Refractory Langerhans Cell Histiocytosis in Children

Plain-language summary

This real-world study examines the use of the drugs Dabrafenib or Trametinib together with Clofarabine in children with high-risk, recurrent, or refractory Langerhans cell histiocytosis. It is open to children aged 0-18 who have blood-forming tissue, liver, or spleen involvement, or whose disease progressed after treatment. The study is being conducted in Phase 2 and is currently recruiting participants.

The summary above is a plain-language rendering of the official record. The original English title is shown for reference.

Trial details

Phase

Phase 2

Status

Recruiting

Sponsor

West China Second University Hospital

Intervention

Dabrafenib or Trametinib and Clofarabine

Start date

6/1/2025

Estimated completion

6/1/2030

Countries

China

Related genes

Locations

• Chengdu, China

Eligibility criteria

Criteria are reproduced from the ClinicalTrials.gov record in the original English. Only the trial team can determine eligibility.

Inclusion Criteria:

1. Children aged 0-18 with LCH (CD1a+/CD207+);
2. Initial LCH diagnosis with hematopoietic, liver, or spleen involvement;
3. LCH patients with disease progression or reactivation after chemotherapy (e.g., prednisone, vincristine, cytarabine, clarithromycin) or targeted therapy;
4. Consent to treatment and follow-up;
5. ECOG score ≥ 2, Lansky score ≥ 50, organ function suitable for chemotherapy.

Exclusion Criteria:

1. Other underlying diseases (e.g., primary immunodeficiency, heart/kidney failure, hepatitis, HIV, organ transplant);
2. Secondary tumor;
3. Recent chemotherapy, radiotherapy, or MAPK inhibitor use with lingering adverse effects;
4. Ongoing nephrotoxic drug use;
5. Refusal to consent.

Exit Criteria:

1. Allergies to dabrafenib or trametinib and clofarabine；
2. Disease progression after 3 months on dabrafenib or trametinib；
3. Severe toxic side effects from clofarabine (grade 4 non-infectious non-hematological toxicity, SIRS, capillary leak syndrome)； 4）The doctor recommends halting the current treatment plan for the patient's benefit.