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ORPHA:449432

IgG4-related submandibular gland disease

high confidenceSubtype of disorder

Also known as: Küttner tumor

Publications

560

76.9th percentile

Trials

0

Interventional, condition-specific

Researchers

1,084

Distinct authors in sample

Gene link

—

Readiness

2/6

Stages with a signal

Clinical definition (Orphanet)

A rare IgG4-related disease characterized by a benign tumor-like chronic inflammatory lesion of the submandibular gland. Histologic features are periductal fibrosis, acinar atrophy, obliterative phlebitis, dense lymphoplasmacytic infiltrates rich in IgG4-positive plasma cells, and formation of lymphoid follicles. Lobular architecture is preserved. Patients most commonly present with unilateral, painless swelling of the submandibular gland. Serologic analysis reveals elevated IgG4 levels.

How rare: How common this is has not been clearly measured.

Orphanet entry

Cross-references

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

Additional Mondo synonyms (7)

IgG4-related sialadenitis · Kuttner tumor · Kuttner tumour · Kuttner's tumor · Kuttner's tumour · Küttner tumour · chronic sclerosing sialadenitis

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

Research-stage checklist from open sources (GenCC, literature, Monarch when enriched, ClinicalTrials.gov). Not a prognosis or care recommendation.

  1. Gene identifiedNot found

    No GenCC disease–gene assertion in this build

  2. LiteraturePresent

    560 matched papers (317 in last 10 years) Source

  3. Phenotype characterisedPresent

    25 HPO annotations (e.g. Abnormal pancreas morphology; Autoimmunity; Increased circulating IgG4 concentration) 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 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)

25

Associated phenotypes · MONDO:0018674

  • Abnormal pancreas morphology
  • Autoimmunity
  • Increased circulating IgG4 concentration
  • Increased circulating IgE concentration
  • Pharyngitis

Showing 5 of 25 — open Monarch for the full list.

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?

560

560 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.

560 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).

317 in the last 10 years · high confidence · 76.9th percentile (publications denominator)

Phrase hits: 560 · MeSH hits: 0

Open Europe PMC search

Who's working on it?

1,084

Distinct author names in 200 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.

  1. 01
    Yu GY7 papers · 2025

    Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology & Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health & NMPA Key Laboratory for Dental Materials, 100081, Beijing, P.R. China. gyyu@263.net.

    Papers in Europe PMC
  2. 02
    Kawano M6 papers · 2025

    Division of Rheumatology, Department of Internal Medicine, Kanazawa University Hospital, Kanazawa, Japan.

    Papers in Europe PMC
  3. 03
    Li W5 papers · 2025

    Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, China.

    Papers in Europe PMC
  4. 04
    Okazaki K5 papers · 2026

    Department of Gastroenterology and Hepatology, Kansai Medical University, Osaka, Japan.

    Papers in Europe PMC
  5. 05
    Atula T4 papers · 2024

    Department of Otorhinolaryngology-Head and Neck Surgery, University of Helsinki and Helsinki University Hospital, PO Box 263, FI-00029, Helsinki, Finland.

    Papers in Europe PMC
  6. 06
    Haglund C4 papers · 2024

    Research Programs Unit, Translational Cancer Medicine, University of Helsinki, PO Box 22, FI-00014, Helsinki, Finland.

    Papers in Europe PMC
  7. 07
    Hagström J4 papers · 2024

    Department of Pathology, University of Helsinki, HUSLAB and Helsinki University Hospital, PO Box 21, FI-00014, Helsinki, Finland.

    Papers in Europe PMC
  8. 08
    Wu LL4 papers · 2024

    Department of Physiology and Pathophysiology, Peking University School of Basic Medical Sciences, State Key Laboratory of Vascular Homeostasis and Remodeling, 100191, Beijing, P.R. China.

    Papers in Europe PMC
  9. 09
    Yamamoto M4 papers · 2026

    The Institute of Medical Science, The University of Tokyo, Tokyo, Japan.

    Papers in Europe PMC
  10. 10
    Zhang YY4 papers · 2021

    Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, P.R. China.

    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 0 · after dedupe 0 · already on CT.gov 0 · kept 0 · parent 0 · uncertain 0 · 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).

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 IgG4-related submandibular gland disease — 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.

"IgG4-related submandibular gland disease" OR "Küttner tumor" OR "IgG4-related sialadenitis" OR "Kuttner tumor" OR "Kuttner tumour" OR "Kuttner's tumor" OR "Kuttner's tumour" OR "Küttner tumour" OR "chronic sclerosing sialadenitis"

Run this search on Europe PMC

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

"IgG4-related submandibular gland disease" OR "Küttner tumor" OR "IgG4-related sialadenitis" OR "Kuttner tumor" OR "Kuttner tumour" OR "Kuttner's tumor" OR "Kuttner's tumour" OR "Küttner tumour" OR "chronic sclerosing sialadenitis"

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 2026-07-27T16:38:48.169Z