ORPHA:1986
Gollop-Wolfgang complex
Also known as: Bifid femur-monodactylous ectrodactyly syndrome
Publications
58
41.2th percentile
Trials
0
Interventional, condition-specific
Researchers
300
Distinct authors in sample
Gene link
—
Readiness
1/6
Stages with a signal
Clinical definition (Orphanet)
A rare limb characterized by bifid femur, absent or hypoplastic tibia and ulna with limb shortening, oligodactyly, and ectrodactyly.
How rare: 1-9 / 1 000 000 — roughly one to nine people per million. In a city the size of Kolkata, perhaps a few dozen.
Cross-references
Joined from Mondo / Orphanet. MeSH labels may enter searches; UMLS / OMIM / NCIT are stored for reference.
- MONDO:0009222
- MeSH:C537917
- OMIM:228250
- UMLS:C1856789
Additional Mondo synonyms (1)
bifid femur-monodactylous ectrodactyly syndrome
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
58 matched papers (26 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 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)
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?
58
58 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=5449) is 41.
58 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).
26 in the last 10 years · high confidence · 41.2th percentile (publications denominator)
Phrase hits: 58 · MeSH hits: 0
Who's working on it?
300
Distinct author names in 58 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.
- 01Arlappa N2 papers · 2015
Division of Community Studies, National Institute of Nutrition, Indian Council of Medical Research, Hyderabad, 500 007, India.
Papers in Europe PMC - 02Asghar SH2 papers · 2015
Division of Community Studies, National Institute of Nutrition, Indian Council of Medical Research, Hyderabad, 500 007, India.
Papers in Europe PMC - 03Bertola DR2 papers · 2023
Unidade de Genética, Instituto da Criança, Hospital das Clínicas da Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil.
Papers in Europe PMC - 04Bos CF2 papers · 2007
Department of Pediatric Orthopaedic Surgery, Leiden University Medical Center, Location Juliana Children's Hospital, MJ Den Haag, The Netherlands. cfabos@xs4all.nl
Papers in Europe PMC - 05Chava R2 papers · 2015
Division of Community Studies, National Institute of Nutrition, Indian Council of Medical Research, Hyderabad, 500 007, India.
Papers in Europe PMC - 06Elewee A2 papers · 2025
Department of Orthopedic Surgery, Damascus Hospital, Damascus, Syria.
Papers in Europe PMC - 07Emmani S2 papers · 2015
Division of Community Studies, National Institute of Nutrition, Indian Council of Medical Research, Hyderabad, 500 007, India.
Papers in Europe PMC - 08Girisha KM2 papers · 2023
Department of Medical Genetics, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, Karnataka, India.
Papers in Europe PMC - 09Gudepu RK2 papers · 2015
Division of Community Studies, National Institute of Nutrition, Indian Council of Medical Research, Hyderabad, 500 007, India.
Papers in Europe PMC - 10Haga N2 papers · 2018
Department of Rehabilitation Medicine, The University of Tokyo Hospital, Tokyo, Japan. hagan-reh@h.u-tokyo.ac.jp.
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 27 July 2026
No matched interventional trials. This is true for 73% of diseases in the trials denominator (5114 of 7003). Here are the researchers publishing on it.
high confidence · 36.5th 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.
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.
"Gollop-Wolfgang complex" OR "Bifid femur-monodactylous ectrodactyly syndrome"
ClinicalTrials.gov query (quoted phrases + MeSH via query.cond, plus recall-expansion terms when used):
"Gollop-Wolfgang complex" OR "Bifid femur-monodactylous ectrodactyly syndrome"
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 2026-07-26T18:41:12.655Z