ORPHA:96061
Mosaic trisomy 8 syndrome
Also known as: Mosaic trisomy chromosome 8 · Trisomy 8 mosaicism · Warkany syndrome
Query health: suspect — Only one of 2 strategies returned hits (phrase).
Publications
339
56.3th percentile
Trials
0
Interventional, condition-specific
Researchers
1,241
Distinct authors in sample
Gene link
—
Readiness
3/6
Stages with a signal
Clinical definition (Orphanet)
A rare anomaly defined by the presence of three copies of chromosome 8 in some cells of the body, and clinically characterized by facial dysmorphism, typically deep palmar and plantar creases, mild intellectual deficit and joint, urinary, cardiac and skeletal anomalies.
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:0019867
- MeSH:C537940
- UMLS:C1096527
Additional Mondo synonyms (1)
Mosaic trisomy type 8
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
No specific-condition interventional trial, but broader-category trials exist — discuss eligibility with a clinician.
- Gene identifiedNot found
No GenCC disease–gene assertion in this build
- LiteraturePresent
339 matched papers (95 in last 10 years) Source
- Phenotype characterisedPresent
42 HPO annotations (e.g. Dolichocephaly; Wide nose; Strabismus) Source
- 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 trialPartial
None under the specific name; 22 for broader category trisomy
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)
42
Associated phenotypes · MONDO:0019867
- Dolichocephaly
- Wide nose
- Strabismus
- Narrow chest
- Deep plantar creases
Showing 5 of 42 — 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?
339
339 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.
339 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).
95 in the last 10 years · high confidence · 56.3th percentile (publications denominator)
Phrase hits: 339 · MeSH hits: 0
Who's working on it?
1,241
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.
- 01Mark HF5 papers · 1997
Laboratory of Cytogenetics, FISH, and Genotoxicology, Rhode Island Hospital, Providence 02903, USA.
Papers in Europe PMC - 02Crowley TB3 papers · 2022
Division of Human Genetics, Children's Hospital of Philadelphia, Philadelphia, PA, USA.
Papers in Europe PMC - 03Emanuel BS3 papers · 2022
Division of Human Genetics, Children's Hospital of Philadelphia, Philadelphia, PA, USA.
Papers in Europe PMC - 04Genitori L3 papers · 2020
Neurosurgery Unit, Meyer Children's Hospital, Florence, Italy.
Papers in Europe PMC - 05Giunti L3 papers · 2020
Medical Genetics Unit, Meyer Children's Hospital, Florence, Italy.
Papers in Europe PMC - 06Guidi M3 papers · 2020
Neuro-Oncology Unit, Department of Pediatric Oncology, Meyer Children's Hospital, Florence, Italy.
Papers in Europe PMC - 07Hu J3 papers · 2022
Department of Medical Genetics, Hunan Provincial Maternal and Child Health Care Hospital, Changsha, 410008, Hunan, China.
Papers in Europe PMC - 08Johansson B3 papers · 2018
Division of Clinical Genetics, Department of Laboratory Medicine, Lund University, Lund, Sweden.
Papers in Europe PMC - 09Lathrop JC3 papers · 1997Papers in Europe PMC
- 10Maserati E3 papers · 2007
Sezione di Biologia e Genetica, Dipartimento di Scienze Biomediche Sperimentali e Cliniche, Università dell'Insubria, Via J.H. Dunant 5, I 21100 Varese, Italy. emanuela.maserati@uninsubria.it
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. 1 observational study did — shown below because natural-history and cohort work can be an important step toward a trial. 22 trials are registered for trisomy, the broader category — shown separately because they may or may not enrol this specific subtype.
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.
22 interventional trials matched trisomy, the broader category — listed below. Those studies are not counted in the condition-specific total.
Broader category: trisomy
22
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
- NCT05527652·RECRUITING·Self-Supporting Nasopharyngeal Airway (ssNPA) Treating Upper Airway Obstruction in Hypotonia
Conditions: Obstructive Sleep Apnea · Hypertonia, Muscle · Nasal Airway Obstruction · Tolerance·Matched via name phrase
- NCT06740162·RECRUITING·Physical Activity and Community EmPOWERment Project
Conditions: Intellectual Disability · Neurodevelopmental Disorders · Autism Spectrum Disorder · Down Syndrome·Matched via name phrase
- NCT07812181·NOT YET RECRUITING·An Open-Label Phase II Feasibility Study for the Use of Ublituximab in Adults With Down Syndrome Regression Disorder
Conditions: Down Syndrome Regression Disorder (DSRD) · Down Syndrome (Trisomy 21) · Neuroinflammatory / Neuropsychiatric Disorder·Matched via name phrase
- NCT06783725·RECRUITING·Sleep Intervention and Quality of Life in Down Syndrome
Conditions: Down Syndrome · Down Syndrome (Trisomy 21)·Matched via name phrase
- NCT07334912·RECRUITING·AEF0217 in Participants With Down Syndrome
Conditions: Down Syndrome (Trisomy 21)·Matched via name phrase
- NCT05231798·RECRUITING·Cholinergic Integrity in Down Syndrome in Association With Aging, Alzheimer's Disease Pathology, and Cognition
Conditions: Down Syndrome · Down Syndrome, Partial Trisomy 21 · Alzheimer Disease·Matched via name phrase
- NCT07234695·RECRUITING·LEvetiracetam to Prevent Seizures in Symptomatic Alzheimer's Disease in Adults With Down Syndrome
Conditions: Down Syndrome · Down Syndrome (DS) · Down Syndrome (Trisomy 21) · Alzheimer Dementia·Matched via name phrase
- NCT07658053·NOT YET RECRUITING·Effects of a Pacifier on Obstructive Sleep Apnea and Its Repercussions in Infants With Down Syndrome
Conditions: Obstructive Sleep Apnea · Down Syndrome (Trisomy 21)·Matched via name phrase
- NCT05970965·RECRUITING·Periodontitis and Inflammation in Children With Down Syndrome/Trisomy 21: Study on Biological Samples
Conditions: Periodontitis · Trisomy 21·Matched via name phrase
- NCT06938542·ENROLLING BY INVITATION·Palliative Care Needs of Children With Rare Diseases and Their Families
Conditions: Trisomy 13 Syndrome · Arthrogryposis Congenita Multiplex With Intestinal Atresia · Asparagine Synthetase Deficiency · CHARGE Syndrome·Matched via name phrase
- NCT07792382·NOT YET RECRUITING·Executive Function Play Opportunities for Children With Down Syndrome
Conditions: Down Syndrome · Trisomy 21·Matched via name phrase
- NCT06911944·NOT YET RECRUITING·Amyloid Lowering for Alzheimer's in Down's With Donanemab Investigation
Conditions: Down Syndrome (DS) · Down Syndrome (Trisomy 21) · Alzheimer Disease · Amyloid Beta Protein·Matched via name phrase
Observational and natural-history studies
1 observational study matches 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
- NCT07683104·RECRUITING·Natural History of Trisomy 8-Associated Autoinflammatory Disease (TRIAD) and Related Disorders
Conditions: Trisomy 8 Mosaicism · Trisomy 8 Associated Autoinflammatory Disease · Mucosal Ulcerations·Matched via name phrase
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 3 · after dedupe 3 · already on CT.gov 0 · kept 0 · parent 0 · uncertain 3 · 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 (3)
- isrctn·ISRCTN65197569·Stopped·The effect of parental group sleep education in young children with Down syndrome: the REST-Ed study
skipped — LLM skipped (--skip-llm)
- isrctn·ISRCTN41024033·No longer recruiting·Myeloid Leukaemia Down Syndrome 2006 for the treatment of myeloid leukaemia in children with Down syndrome
skipped — LLM skipped (--skip-llm)
- isrctn·ISRCTN17442511·No longer recruiting·Sharing of eggs produced during the IVF process for scientific research into fertility treatments, miscarriage, and the origin of genetic disorders
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 Mosaic trisomy 8 syndrome — 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.
"Mosaic trisomy 8 syndrome" OR "Mosaic trisomy chromosome 8" OR "Trisomy 8 mosaicism" OR "Warkany syndrome" OR "Mosaic trisomy type 8"
MeSH descriptor terms unioned into the query: Chromosome 8, mosaic trisomy
ClinicalTrials.gov query (quoted phrases + MeSH via query.cond, plus recall-expansion terms when used):
"Mosaic trisomy 8 syndrome" OR "Mosaic trisomy chromosome 8" OR "Trisomy 8 mosaicism" OR "Warkany syndrome" OR "Mosaic trisomy type 8" OR "Chromosome 8, mosaic trisomy"
Study-type breakdown: 0 interventional · 1 observational · 0 expanded access. Only interventional studies enter the trial headline.
Parent-category trials query:
"trisomy"
Query health: suspect — strategies attempted: phrase, mesh; 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 2026-07-27T04:50:42.276Z