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ORPHA:49804

Lichen amyloidosis

high confidenceDisorder

Also known as: Amyloid lichen · Lichen amyloidosus

Publications

824

80.5th percentile

Trials

2

Interventional, condition-specific

Researchers

963

Distinct authors in sample

Gene link

—

Readiness

3/6

Stages with a signal

Clinical definition (Orphanet)

Lichen amyloidosis is a rare chronic form of cutaneous amyloidosis, a skin disease characterized by the accumulation of amyloid deposits in the dermis, clinically characterized by the development of pruritic, often pigmented, hyperkeratotic papules on trunk and extremities, especially on the shins, and histologically by the deposition of amyloid or amyloid-like proteins in the papillary dermis.

Orphanet entry

Cross-references

Joined from Mondo / Orphanet. MeSH labels may enter searches; UMLS / OMIM / NCIT are stored for reference.

Additional Mondo synonyms (2)

amyloid lichen · lichen amyloidosus

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.”

3/6 stages with a signal

An interventional trial matched this condition name on ClinicalTrials.gov — see trials below.

  1. Gene identifiedNot found

    No GenCC disease–gene assertion in this build

  2. LiteraturePresent

    824 matched papers (389 in last 10 years) Source

  3. Phenotype characterisedPresent

    2 HPO annotations (e.g. Pruritus; Papule) Source

  4. Animal modelNot found

    No Alliance genotype “model of” associations via Monarch for these Mondo IDs

  5. Orphan designationNot found

    No FDA or EMA orphan-drug designation matched this disease via UMLS or preferred name Source

  6. Interventional trialPresent

    2 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)

2

Associated phenotypes · MONDO:0018856

  • Pruritus
  • Papule

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?

824

824 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=3967) is 59.

824 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).

389 in the last 10 years · high confidence · 80.5th percentile (publications denominator)

Phrase hits: 824 · MeSH hits: 0

Open Europe PMC search

Who's working on it?

963

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.

  1. 01
    Li F6 papers · 2025

    Department of Oncologic and Urologic Surgery, The 903rd PLA Hospital, Wenzhou Medical University, 40 Jichang Road, Hangzhou, 310004, Zhejiang Province, China.

    Papers in Europe PMC
  2. 02
    Mathiesen JS5 papers · 2025

    Department of ORL, Head & Neck Surgery and Audiology, Odense University Hospital, Odense, Denmark.

    Papers in Europe PMC
  3. 03
    Wang H5 papers · 2026

    Division of Thyroid Surgery, The China-Japan Union Hospital of Jilin University, Jilin Provincial Key Laboratory of Surgical Translational Medicine, Jilin Provincial Precision Medicine Laboratory of Molecular Biology and Translational Medicine on Differentiated Thyroid Carcinoma, Changchun, China.

    Papers in Europe PMC
  4. 04
    Lee JH4 papers · 2025

    Department of Dermatology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.

    Papers in Europe PMC
  5. 05
    Poulsen MM4 papers · 2025

    Department of Endocrinology and Internal Medicine, Aarhus University Hospital, Aarhus, Denmark.

    Papers in Europe PMC
  6. 06
    Qi XP4 papers · 2021

    Department of Oncologic and Urologic Surgery, The 903rd PLA Hospital, Wenzhou Medical University, 40 Jichang Road, Hangzhou, 310004, Zhejiang Province, China. qxplmd@163.com.

    Papers in Europe PMC
  7. 07
    Rasmussen ÅK4 papers · 2025

    Department of Endocrinology and Metabolism, Copenhagen University Hospital, Copenhagen, Denmark.

    Papers in Europe PMC
  8. 08
    Rossing M4 papers · 2025

    Center for Genomic Medicine, Copenhagen University Hospital, Copenhagen, Denmark.

    Papers in Europe PMC
  9. 09
    Cao ZL3 papers · 2021

    Department of Oncologic and Urologic Surgery, The 903rd PLA Hospital, Wenzhou Medical University, 40 Jichang Road, Hangzhou, 310004, Zhejiang Province, China.

    Papers in Europe PMC
  10. 10
    Feldt-Rasmussen U3 papers · 2025

    Department of Medical Endocrinology and Metabolism, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark; Institute of Clinical Medicine, Faculty of Health Sciences, Copenhagen University, Copenhagen, Denmark.

    Papers in Europe PMC

Clinical research

Is a treatment being tested?

2

interventional trials for this specific condition

2 interventional trials matched this specific condition name; none in our sample are currently recruiting. 367 trials are registered for amyloidosis, the broader category — shown separately because they may or may not enrol this specific subtype.

Data as of 11 September 2026

2 interventional trials — more than 77.2% of diseases in the trials denominator have none at all (5501 of 7126; this disease is at the 84.5th percentile).

high confidence · 84.5th percentile (trials denominator)

Recruiting interventional trials

From the matched ClinicalTrials.gov set

2 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.

Broader category: amyloidosis

367

Interventional trials for the parent category, exclusive of NCT IDs already counted above. Eligibility for this subtype is not guaranteed.

Worth raising with a clinician. How we count trials.

Recruiting under the broader category

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 0 · after dedupe 0 · already on CT.gov 0 · kept 0 · parent 0 · uncertain 0 · dropped 0 · fetched 2026-07-29

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).

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 Lichen amyloidosis — check Associations / patient organisations on that page.

India — NPRD

Last verified 2026-07-26

This 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.

"Lichen amyloidosis" OR "Amyloid lichen" OR "Lichen amyloidosus"

Run this search on Europe PMC

ClinicalTrials.gov query (quoted phrases + MeSH via query.cond, plus recall-expansion terms when used):

"Lichen amyloidosis" OR "Amyloid lichen" OR "Lichen amyloidosus"

Interventional trials matched via: phrase (mesh = registered under a MeSH descriptor no name phrase would catch; recall-expansion = gene / selected parent terms used only for trials).

Study-type breakdown: 2 interventional · 0 observational · 0 expanded access. Only interventional studies enter the trial headline.

Parent-category trials query:

"amyloidosis"

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 2026-07-27T00:17:52.985Z