Langerhans cell histiocytosis (LCH)
Prepared with OnCo (onco.cc/prep/langerhans-cell-histiocytosis/). Orientation, not medical advice; your team knows your case.
My details
What I know, what is unclear, changes to discuss
Saved in this browserMy questions
18 on the sheet- 1.What is my exact diagnosis, stage, and grade, and which tests established them?
- 2.Which biomarkers have been tested on my tumour (for example BRAF V600E in lesion tissue and cell-free DNA, MAP2K1 and other MAPK alterations, Risk-organ involvement at diagnosis, Response at week 6, Pituitary MRI and posterior pituitary function), and what were the results?
- 3.Which subtype is my cancer, and does that change the recommended treatment?
- 4.Is germline (inherited) genetic testing recommended for me or my family?
- 5.For my situation (single-system bone or skin), which of the standard options do you recommend and why?
- 6.Am I a candidate for Vinblastine, and what side effects should I expect?
- 7.For my situation (multisystem lch (first line)), which of the standard options do you recommend and why?
- 8.Am I a candidate for Vinblastine, and what side effects should I expect?
- 9.How do the results of LCH-III apply to someone like me?
- 10.For my situation (refractory risk-organ disease or reactivation), which of the standard options do you recommend and why?
- 11.Am I a candidate for Cladribine, Vemurafenib, Dabrafenib + trametinib, and what side effects should I expect?
- 12.For my situation (neurodegenerative lch), which of the standard options do you recommend and why?
- 13.Am I a candidate for Dabrafenib + trametinib, and what side effects should I expect?
- 14.Are there clinical trials I could join, for example of Dabrafenib + trametinib, Vemurafenib, LCH-III?
- 15.Would a second opinion at a high-volume centre change anything, and can you help arrange it?
- 16.What supportive care (symptom control, nutrition, exercise, mental health, financial help) is available from the start?
- 17.I read that “How long to give BRAF or MEK inhibitors and how to stop them without reactivation; combination with chemotherapy to allow cessation is being tested in the Histiocyte Society and NACHO networks”. How does that affect my plan?
- 18.I read that “Preventing and treating neurodegenerative LCH; MRI surveillance and early MAPK inhibition are the current approach”. How does that affect my plan?
The words I may hear
- Late effects and survivorship toxicity: Health problems appearing months or decades after treatment ends: heart damage, infertility, second cancers, lymphoedema, dry mouth, memory problems, weak bones.
Tests and results to bring
Biomarker results to ask for: BRAF V600E in lesion tissue and cell-free DNA (disease burden and monitoring), MAP2K1 and other MAPK alterations, Risk-organ involvement at diagnosis, Response at week 6 (predicts outcome in LCH-III), Pituitary MRI and posterior pituitary function, Brain MRI for neurodegenerative change.
Scans and tests linked to this cancer: Active surveillance, Liquid biopsy (ctDNA), MRI.
Bring copies of scan reports, pathology and blood results, and a list of every medicine and supplement.
The treatments I may be offered
- Single-system bone or skin: Biopsy or curettage with observation; intralesional steroid, topical therapy or indomethacin for symptomatic lesions; systemic therapy for multifocal bone or CNS-risk lesions. (Active surveillance, Vinblastine)
- Multisystem LCH (first line): Vinblastine and prednisone for 12 months (LCH-III), with response assessment at 6 weeks; LCH-IV tests further tailoring of duration and intensity. (Vinblastine, LCH-III)
- Neurodegenerative LCH: MAPK-pathway inhibition (BRAF or MEK inhibitor) with neurological monitoring; early MRI detection in children with pituitary or craniofacial disease. (Dabrafenib + trametinib, MRI)
- Refractory risk-organ disease or reactivation: Cladribine plus cytarabine or clofarabine salvage; BRAF inhibitor (vemurafenib or dabrafenib, with trametinib) for BRAF V600E, MEK inhibitor for MAP2K1-mutant disease. (Cladribine, Vemurafenib, Dabrafenib + trametinib)
From the standard of care recorded for this cancer; which apply depends on your stage and biomarkers. Ask which the team recommends and why.