ORPHA:566396
Chronic mast cell leukemia
Also known as: Chronic MCL
Publications
105
54.5th percentile
Trials
0
Interventional, condition-specific
Researchers
648
Distinct authors in sample
Gene link
—
Readiness
1/6
Stages with a signal
Clinical definition (Orphanet)
A rare form of mast cell leukemia characterized by the presence of at least 20% mast cells in bone marrow aspirate smears but often mature mast cell morphology, low proliferation rate, and absence of organ damage and C findings (cytopenias, , ascites, portal hypertension, , skeletal lesions, malabsorption). The disease course is less aggressive than in the acute form, although patients may later progress.
Cross-references
Joined from Mondo / Orphanet. MeSH labels may enter searches; UMLS / OMIM / NCIT are stored for reference.
- MONDO:0035445
- UMLS:C5680130
Research stages
Trial readiness signals
Where this condition sits on an open-data research pipeline — not how close a treatment is, and not medical advice. Empty stages often mean “not in these databases under this Mondo ID,” not “impossible.”
1/6 stages with a signal
Research-stage checklist from open sources (GenCC, literature, Monarch when enriched, ClinicalTrials.gov). Not a prognosis or care recommendation.
- Gene identifiedNot found
No GenCC disease–gene assertion in this build
- LiteraturePresent
105 matched papers (81 in last 10 years) Source
- Phenotype characterisedNot found
No HPO disease–phenotype associations via Monarch for these Mondo IDs
- Animal modelNot found
No Alliance genotype “model of” associations via Monarch for these Mondo IDs
- Orphan designationNot found
No FDA or EMA orphan-drug designation matched this disease via UMLS or preferred name Source
- Interventional trialNot found
No matched interventional trial under our ClinicalTrials.gov rules
Biology
Genes and phenotypes
Gene–disease validity from GenCC, plus phenotypes and animal models joined from Monarch Initiative via Mondo ID — not a clinical diagnosis aid.
Do we know what causes it?
Not yet — the cause hasn't been pinned down in GenCC.
No strong gene–disease assertion joined for this Orphanet entity.
Phenotypes (Monarch / HPO)
None returned for this Mondo ID. That often means “not linked under this ID,” not “no clinical features.”
Animal models (Monarch / Alliance)
None returned for this Mondo ID. Empty here is not proof that no model organism work exists under another name or gene.
Monarch fetch 2026-07-29
Therapies
Designations, candidates, and chemicals
FDA OOPD and EMA orphan designations, Open Targets clinical candidates, and CTD chemical associations via MyDisease.info. These never change the interventional-trial headline.
Orphan designation (FDA · EMA)
No designation matched this disease via UMLS or preferred name on the FDA OOPD mirror or EMA orphan register. Absence here is not proof that none exists under another wording.
Open Targets candidates
No drugs or clinical candidates returned for this Mondo ID on Open Targets.
CTD chemicals (MyDisease.info)
No CTD chemical associations returned for this Mondo ID.
Literature
Is anyone studying this?
105
105 papers have ever been published on this condition (under this name). For scale, breast cancer has over 700,000. Median papers in the last 10 years for a rare disease in this dataset (publications denominator n=3967) is 59.
105 papers since the earliest indexed year in this search — median last-10-year count for a rare disease in this dataset is 59 (publications denominator n=3967).
81 in the last 10 years · high confidence · 54.5th percentile (publications denominator)
Phrase hits: 105 · MeSH hits: 0
Who's working on it?
648
Distinct author names in 105 sampled papers — named people below.
Who's working on it?
No interventional trial matched this name; these authors publish on it in the sampled literature — a practical starting point for contact.
- 01Valent P13 papers · 2023
Department of Medicine I, Division of Hematology and Ludwig Boltzmann Cluster Oncology, Medical University of Vienna, Vienna, Austria. peter.valent@meduniwien.ac.at.
Papers in Europe PMC - 02Arock M11 papers · 2023
LBPA CNRS UMR8113, Ecole Normale Supérieure de Cachan, Cachan, France.
Papers in Europe PMC - 03Reiter A10 papers · 2024
Department of Hematology and Oncology, University Hospital Mannheim, Heidelberg University, Mannheim, Germany.
Papers in Europe PMC - 04Hermine O9 papers · 2023
Imagine Institute Université Paris Descartes, Sorbonne, Paris Cité, Centre National de Référence des Mastocytoses, Paris, France.
Papers in Europe PMC - 05Sperr WR8 papers · 2023
Department of Medicine I, Division of Hematology and Ludwig Boltzmann Cluster Oncology, Medical University of Vienna, Vienna, Austria.
Papers in Europe PMC - 06Horny HP7 papers · 2024
Institute of Pathology, Ludwig-Maximilians-University, Munich, Germany.
Papers in Europe PMC - 07Schwaab J6 papers · 2024
Hämatologie und Onkologie, III. Medizinische Klinik, Universitätsmedizin Mannheim, Universität Heidelberg, Mannheim, Germany.
Papers in Europe PMC - 08Sotlar K6 papers · 2024
Institute of Pathology, Paracelsus Medical University Salzburg, Salzburg, Austria.
Papers in Europe PMC - 09Triggiani M6 papers · 2023
Division of Allergy and Clinical Immunology, University of Salerno, Salerno, Italy.
Papers in Europe PMC - 10Akin C5 papers · 2021
Division of Allergy and Immunology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts.
Papers in Europe PMC
Clinical research
Is a treatment being tested?
0
interventional trials for this specific condition
No interventional trial testing a treatment matched this specific condition name on ClinicalTrials.gov (observational studies and pan-disease registries are listed separately when present).
Data as of 11 September 2026 · last trial check 11 September 2026
No matched interventional trials. This is true for 77.2% of diseases in the trials denominator (5501 of 7126). Here are the researchers publishing on it.
high confidence · 38.6th percentile (trials denominator)
Recruiting interventional trials
From the matched ClinicalTrials.gov set
No interventional trial testing a treatment was found for this specific condition name on ClinicalTrials.gov.
See who's working on it — people publishing on this disease are often the practical next contact when no trial is listed.
Other registries (secondary)
Broader net from EU CTIS, ISRCTN, and ICTRP when available — deduped against ClinicalTrials.gov IDs already counted above. Dual-model LLM relevance gates what we keep. These rows are not added to the interventional headline.
raw 6 · after dedupe 6 · already on CT.gov 0 · kept 0 · parent 0 · uncertain 6 · dropped 0 · fetched 2026-07-30
Source notes: ictrp: Error: ICTRP public search unavailable (WHO portal is SPA-only; SOAP needs partnership). Tried: https://apps.who.int/tri
No secondary-registry studies passed dual-model relevance for this condition name (after dedupe).
Uncertain / not reviewed (6)
- isrctn·ISRCTN14974342·Recruiting·A Phase I/IIa trial of NVG-222 in blood cancers
skipped — LLM skipped (--skip-llm)
- isrctn·ISRCTN15025004·No longer recruiting·A phase IIa study of rituximab and varlilumab in relapsed or refractory B-cell malignancies
skipped — LLM skipped (--skip-llm)
- isrctn·ISRCTN04804337·No longer recruiting·Phase I dose-escalation study of oral administration of S55746 in patients with B-Cell Non-Hodgkin Lymphoma
skipped — LLM skipped (--skip-llm)
- isrctn·ISRCTN32524443·No longer recruiting·Phase II trial of single agent ofatumumab in relapsed/refractory mantle cell lymphoma
skipped — LLM skipped (--skip-llm)
- isrctn·ISRCTN34386131·No longer recruiting·Efficacy and safety of olaparib in relapsed and refractory chronic lymphocytic leukaemia patients with an 11q deletion or ATM mutation and relapsed/refractory patients with T-prolymphocytic leukaemia and mantle cell lymphoma
skipped — LLM skipped (--skip-llm)
- isrctn·ISRCTN01000893·No longer recruiting·Effect of pregabalin in acute post-operative pain and functional recovery for laparoscopic cholecystectomy
skipped — LLM skipped (--skip-llm)
Where to find support
Condition-specific patient organisations, when Orphanet lists them, are on the disease’s Orphanet page. We also link umbrella groups that support undiagnosed and ultra-rare families.
Orphanet entry for Chronic mast cell leukemia — check Associations / patient organisations on that page.
India — NPRD
Last verified 2026-07-26This ORPHAcode is not on our curated NPRD list (direct or Mondo-parent match). That does not decide clinical eligibility; families in India should ask a notified Centre of Excellence about current coverage.
Hand-curated for this project. ORPHAcode mappings are best-effort and may be incomplete or imprecise for umbrella categories. Parent (Mondo) matches mean the policy lists a broader category — confirm eligibility with a Centre of Excellence. Financial entitlements summarised from public policy statements and may change. This is not official government guidance.
How we counted this
Europe PMC query (preferred label + any corrected label + Orphanet and Mondo exact synonyms, stoplisted; unioned with resolved MeSH labels when available). UMLS / OMIM / NCIT cross-references are stored on the overview but are not added to the query string.
"Chronic mast cell leukemia" OR "Chronic MCL"
ClinicalTrials.gov query (quoted phrases + MeSH via query.cond, plus recall-expansion terms when used):
"Chronic mast cell leukemia" OR "Chronic MCL"
Study-type breakdown: 0 interventional · 0 observational · 0 expanded access. Only interventional studies enter the trial headline.
Query health: ok — strategies attempted: phrase; with hits: phrase
Run this search on ClinicalTrials.gov
Confidence reasoning
- Preferred label is multi-word and distinctive
- No synonyms dropped by stoplist
- No label/synonym collisions with other diseases in this corpus
Ingested 2026-07-27T18:26:50.521Z