ORPHA:86869
Lymphomatoid granulomatosis
Also known as: LYG
Publications
2,502
Trials
81
Interventional, condition-specific
Researchers
1,156
Distinct authors in sample
Gene link
—
Readiness
2/6
Stages with a signal
Clinical definition (Orphanet)
Lymphomatoid granulomatosis (LYG) is a very rare Epstein-Barr virus (EBV)-driven lymphoproliferative disease most commonly occurring in adults (in the fourth to sixth decade of life) and commonly affecting the lungs (with presentations varying from small bilateral pulmonary nodules to large necrotic and sometimes cavitating lesions), skin, central nervous system, and kidneys, but only very rarely affecting the lymph nodes and spleen. The symptoms associated with LYG depend on the site of disease involvement but mainly include cough, dyspnea or chest pain (in those with pulmonary involvement) and constitutional symptoms such as weight loss and fever.
How rare: How common this is has not been clearly measured.
Cross-references
Joined from Mondo / Orphanet. MeSH labels may enter searches; UMLS / OMIM / NCIT are stored for reference.
- MONDO:0019466
- MeSH:D008230
- UMLS:C0024307
- NCIT:C7930
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.”
2/6 stages with a signal
An interventional trial matched this condition name on ClinicalTrials.gov — see trials below.
- Gene identifiedNot found
No GenCC disease–gene assertion in this build
- LiteraturePresent
2,502 matched papers (900 in last 10 years) Source
- Phenotype characterisedNot checked
Not yet enriched from Monarch / HPO
- Animal modelNot checked
Not yet enriched from Monarch / Alliance
- Orphan designationNot checked
FDA/EMA orphan-drug designation not enriched yet
- Interventional trialPresent
81 matched on ClinicalTrials.gov
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)
Not enriched in this build — Monarch phenotype joins were not run for this record.
Animal models (Monarch / Alliance)
Not enriched in this build.
Literature
Is anyone studying this?
2,502
2,502 papers have been published on this condition. That is a real research literature — still far smaller than common diseases (breast cancer: over 700,000 papers). Median papers in the last 10 years for a rare disease in this dataset (publications denominator n=5449) is 41.
2,502 papers since the earliest indexed year in this search — median last-10-year count for a rare disease in this dataset is 41 (publications denominator n=5449).
900 in the last 10 years · low confidence
Phrase hits: 2,502 · MeSH hits: 39
Who's working on it?
1,156
Distinct author names in 200 sampled papers — named people below.
Who's working on it?
People publishing on this condition (sampled Europe PMC records). Affiliation is the most recent found in that sample.
- 01Zhang Y4 papers · 2026
Department of Pathology, Xuzhou Central Hospital, Xuzhou, Jiangsu.
Papers in Europe PMC - 02Cao L3 papers · 2025
College of Acupuncture and Massage, Shandong University of Traditional Chinese Medicine, Jinan, People's Republic of China.
Papers in Europe PMC - 03Jia J3 papers · 2025
Department of Endocrinology, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210029, Jiangsu Province, China.
Papers in Europe PMC - 04Liu X3 papers · 2025
Department of Neurology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, No. 324 JingWu Road, 250021 Jinan, Shandong, P.R. China.
Papers in Europe PMC - 05Ohshima K3 papers · 2023
Department of Pathology, School of Medicine, Kurume University, Japan.
Papers in Europe PMC - 06Tanaka K3 papers · 2025
Department of Hematology/Oncology, Wakayama Medical University, Japan.
Papers in Europe PMC - 07Zhou J3 papers · 2025
Department of Respiratory Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.
Papers in Europe PMC - 08
- 09Braun M2 papers · 2023
Department of Pathology, Chair of Oncology, Medical University of Łódź, Łódź, Poland
Papers in Europe PMC - 10Chen W2 papers · 2021
Department of Pathology Harold. C. Simmons Comprehensive Cancer Center University of Texas Southwestern Medical Center Dallas TX USA.
Papers in Europe PMC
Clinical research
Is a treatment being tested?
81
interventional trials for this specific condition
81 interventional trials matched this specific condition name; none in our sample are currently recruiting.
Data as of 27 July 2026
81 interventional trials — more than 73% of diseases in the trials denominator have none at all (5114 of 7003; this disease is at the 98.2th percentile).
low confidence · 98.2th percentile (trials denominator)
Recruiting interventional trials
From the matched ClinicalTrials.gov set
81 interventional trials matched after quoted-phrase search and title/condition post-filter.
No currently recruiting studies in the matched set. Open the same search on ClinicalTrials.gov.
Observational and natural-history studies
2 observational studies match this condition. These do not test a treatment and are not counted in the interventional-trial headline, but they are genuine research: natural-history work often defines the endpoints needed for a future rare-disease trial, and families may be able to enroll.
Recruiting or not-yet-recruiting
- NCT01676805·RECRUITING·Tissue Collection for Studies of Lymph Cancer
Conditions: Hodgkin Disease · Lymphoma, Non-Hodgkin · Multiple Myeloma · Lymphomatoid Granulomatosis·Matched via name + MeSH
Where to find support
We do not yet link condition-specific patient organisations. These umbrella groups support undiagnosed and ultra-rare families:
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.
"Lymphomatoid granulomatosis"
MeSH descriptor terms unioned into the query: Lymphomatoid Granulomatosis
ClinicalTrials.gov query (quoted phrases + MeSH via query.cond, plus recall-expansion terms when used):
"Lymphomatoid granulomatosis"
Interventional trials matched via: both (mesh = registered under a MeSH descriptor no name phrase would catch; recall-expansion = gene / selected parent terms used only for trials).
Study-type breakdown: 81 interventional · 2 observational · 0 expanded access. Only interventional studies enter the trial headline.
Query health: ok — strategies attempted: phrase, mesh; with hits: phrase, mesh
Run this search on ClinicalTrials.gov
Synonyms dropped by stoplist: LYG
Confidence reasoning
- Preferred label is multi-word and distinctive
- 1 synonym(s) dropped by stoplist (may under-count)
- No label/synonym collisions with other diseases in this corpus
- Publication count (2502) is extremely high with unknown/missing prevalence — treat as possible over-matching, not proven research intensity
Ingested 2026-07-27T03:13:48.876Z