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RecruitingNCT04133272REDUpdated Nov 5, 2026

Registry of Ehlers-Danlos Syndrome

An observational study in Ehlers-Danlos Syndrome, sponsored by Luca Sangiorgi. Recruiting at 1 site in Italy. Per ClinicalTrials.gov, last updated 2026-11-05.

Sponsored by Luca Sangiorgi · Observational

From the registry’s dates

  • Started Jun 2014; still recruiting 12 years 5 months later.
Updated Nov 5, 2026Primary completion movedGo to Updates ↓
Study type
Observational
Model
Cohort
Time perspective
Other
Enrollment
3,000
Sex
All
01

Study summary

RED is a retrospective and prospective registry, finalized for care and research purposes. It is articulated in main sections - strongly related and mutually dependent on each other - corresponding to different data domains: personal information, clinical data, genetic data, genealogical data, surgeries, etc.

This approach has been developed to corroborate and integrate data from different sources and evaluating several aspects of diseases and to correlate genetic background and phenotypic outcomes, in order to better investigate disease pathophysiology. Due to legal requirements, institutional directives and organizational issues, we are unable to include individuals residing outside Italy in the registry at this time. We are currently engaged in the preparation of a recruitment process for individuals residing outside Italy.

Read the detailed description

The traditional method of collecting patient information is often chaotic, inconvenient and sometimes even unsafe, particularly when dealing with rare diseases. In 2014, the need to simplify the diagnostic process and to overcome the difficulties of data storage and analysis, led to the suggestion of implementing the Registry of Ehlers-Danlos Syndrome (RED).

The RED relies on an IT platform named Genotype-phenotype Data Integration platform - GeDI. This solution was developed through a collaboration between Rare Skeletal Disease Department and a local software company (Dilaxia) and is General Data Protection Regulation (GDPR)-compliant, multi-client and web-accessible. It has been designed according to current medical informatics standards, including the Orphanet code, the International Classification of Diseases (ICD), the Human Genome Variants Society, aiming to follow FAIR (Findability Accessibility Interoperability Reusability) principles. GeDI is continuously being implemented to improve the management of people with Ehlers-Danlos Syndrome and to assist researchers in analysing the information collected. RED is divided into the following main sections:

  • Personal data: it comprises general information, birth details and residence data;
  • Patient data: including the patients internal code, the hospital code and other patient details;
  • Diagnostic Process: the diagnosis, the status (affected, suspected, etc.), age at diagnosis, comorbidities, allergies, etc.;
  • Genogram: a tool for designing the family transmission of the disease, alongside information on the disease status of all relatives included;
  • Clinical events: it records a long list of signs and symptoms of Ehlers-Danlos Syndrome as well as several additional items to describe the disease
  • Genetic Analysis and Alteration: including analytical technique, sample information, analysis duration, etc. This section also comprises detailed information on any detected pathological variants (e.g. gene, international reference, DNA change, protein change, genomic position, etc.);
  • Visits: this section includes visit type (genetic, orthopedic, rehabilitation, pediatric, etc.), the date of the visit, prescriptions, imaging, etc.;
  • Treatments: this section comprises information of a wide range of treatments including pharmacological, devices, supplements, and other treatments such as psychological, nutritional, etc.;
  • Surgeries: this section contains information on the type of surgeries, the age of the patients, the site/localization of the procedures, etc.
  • Documents: this repository allow us to store all types of documents (radiological reports, imaging, consents, clinical reports, etc.);
  • Consents: this section provides a comprehensive overview of all consents collected, including the collection date;
  • Samples: this section includes information on the samples, like the type, date of collection, etc.
  • PROs: this section collects information on patients reported outcomes such as the quality of life or ABC scale.
02

Conditions studied

  • Ehlers-Danlos Syndrome

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Keywords

  • Disease Registry
  • Natural History Study
  • Disease Evolution
  • Genotype-Phenotype Correlation
03

In context

Ehlers-Danlos Syndrome

66 studies on the registry are indexed under Ehlers-Danlos Syndrome; 24 are open to participants now.

This study's planned enrollment of 3,000 is above the median of 153 across 32 observational studies indexed under Ehlers-Danlos Syndrome.

Browse Ehlers-Danlos Syndrome studies →

Lead sponsor

Luca Sangiorgi is the lead sponsor of 5 studies on the registry; 5 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
Child (0–17), Adult (18–64), Older adult (65+)
Sexes eligible
All
Accepts healthy volunteers
Yes
Sampling method
Probability sample

Study population

Patients affected by Ehlers-Danlos Syndrome. The Registry will include also data on fetuses (prenatal and abortion)

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • All Ehlers-Danlos Syndrome patients, including prenatal and fetal diagnosis of Ehlers-Danlos Syndrome

Exclusion criteria

Exclusion Criteria:

  • Any condition unrelated to Ehlers-Danlos Syndrome
05

Study design

Observational model
Cohort
Time perspective
Other
Enrollment
3,000 participants (estimated)
Target follow-up
25 Years
Patient registry
Yes
Biospecimen retention
Samples with dna

Groups and cohorts

  • Ehlers-Danlos Syndrome patients

    The group comprises all patients affected by Ehlers-Danlos Syndrome, including prenatal and fetal diagnosis of Ehlers-Danlos Syndrome

06

What researchers measure

Primary outcomes

  1. Natural History and Epidemiology in terms of clinical, genetic and functional evaluation

    To maintain an established registry in order to assess epidemiology and natural history. Collection of: 1. physical examinations data: assessment of type of the disease (according to Orphanet types) 2. orthopedic and functional data: stature (cm), weight (kg), Beighton score, pain score (numeric scale), presence cardiac lesion (ultrasound) 3. surgical procedures: type, number and site of surgeries disease-related and age at surgeries 4. genetics background: target gene, type of mutation, type of variant detected, clinical significance 5. family history: inheritance in maternal or paternal line 6. treatment information: pharmacological, devices, supplements, and other treatments Clinical, orthopedic, surgical, treatment and functional features are updated at each follow up. Clinical reports, medical charts, genetic report and imaging are the primary sources of data.

    Time frame: 25 years

Secondary outcomes

  1. Genotype-Phenotype Correlation among clinical features and molecular background

    The secondary outcome comprises the correlation between genotype and phenotype. This includes but is not limited to clinical features and genetic background. This will be pursued using the information collected during visits and follow-ups and the genetic information resulting from molecular investigations

    Time frame: 25 years

Other outcomes

  1. Longitudinal study of disease (including prospective and retrospective data)

    This outcome aims to investigate the Ehlers-Danlos Syndrome trend during time. This will be evaluated within the families and among the families. Main clinical features, such as height (cm), pain (numeric scale) and other variables will be collected both retrospectively and prospectively. An evaluation of these parameters will be performed at each visit to keep track on the progression of clinical manifestations.

    Time frame: 25 years

07

Study locations

1 of 1 sites recruiting
08

References and documents

Publications

  • Ritelli M, Rovati C, Venturini M, Chiarelli N, Cinquina V, Castori M, Colombi M. Application of the 2017 criteria for vascular Ehlers-Danlos syndrome in 50 patients ascertained according to the Villefranche nosology. Clin Genet. 2020 Feb;97(2):287-295. doi: 10.1111/cge.13653. Epub 2019 Nov 3. PubMed 31600821 ↗
  • Ghali N, Sobey G, Burrows N. Ehlers-Danlos syndromes. BMJ. 2019 Sep 18;366:l4966. doi: 10.1136/bmj.l4966. No abstract available. PubMed 31533917 ↗
  • Black CM, Gathercole LJ, Bailey AJ, Beighton P. The Ehlers-Danlos syndrome: an analysis of the structure of the collagen fibres of the skin. Br J Dermatol. 1980 Jan;102(1):85-96. doi: 10.1111/j.1365-2133.1980.tb05675.x. PubMed 7378285 ↗
  • Beighton P. Ehlers-Danlos syndrome. Ann Rheum Dis. 1970 May;29(3):332-3. doi: 10.1136/ard.29.3.332. No abstract available. PubMed 5432600 ↗
  • Benistan K, Gillas F. Pain in Ehlers-Danlos syndromes. Joint Bone Spine. 2020 May;87(3):199-201. doi: 10.1016/j.jbspin.2019.09.011. Epub 2019 Sep 25. No abstract available. PubMed 31562935 ↗
  • Hausser I. Diagnosis of Ehlers-Danlos syndrome: data deficiency still does not allow establishment of a complete history of the disease and its pathomechanisms. Br J Dermatol. 2020 Mar;182(3):535-536. doi: 10.1111/bjd.18373. Epub 2019 Aug 20. No abstract available. PubMed 31432500 ↗
  • Jesudas R, Chaudhury A, Laukaitis CM. An update on the new classification of Ehlers-Danlos syndrome and review of the causes of bleeding in this population. Haemophilia. 2019 Jul;25(4):558-566. doi: 10.1111/hae.13800. Epub 2019 Jun 10. PubMed 31329366 ↗
  • De Baets S, Calders P, Verhoost L, Coussens M, Dewandele I, Malfait F, Vanderstraeten G, Van Hove G, Van de Velde D. Patient perspectives on employment participation in the "hypermobile Ehlers-Danlos syndrome". Disabil Rehabil. 2021 Mar;43(5):668-677. doi: 10.1080/09638288.2019.1636316. Epub 2019 Jul 9. PubMed 31287330 ↗
  • Copetti M, Morlino S, Colombi M, Grammatico P, Fontana A, Castori M. Severity classes in adults with hypermobile Ehlers-Danlos syndrome/hypermobility spectrum disorders: a pilot study of 105 Italian patients. Rheumatology (Oxford). 2019 Oct 1;58(10):1722-1730. doi: 10.1093/rheumatology/kez029. PubMed 30783660 ↗
  • Mu W, Muriello M, Clemens JL, Wang Y, Smith CH, Tran PT, Rowe PC, Francomano CA, Kline AD, Bodurtha J. Factors affecting quality of life in children and adolescents with hypermobile Ehlers-Danlos syndrome/hypermobility spectrum disorders. Am J Med Genet A. 2019 Apr;179(4):561-569. doi: 10.1002/ajmg.a.61055. Epub 2019 Jan 31. PubMed 30703284 ↗
  • Morri M, Tremosini M, Forni C, Moroni A, Pedrini E, Cecco AD, Gnoli M, Sangiorgi L. Characteristics of Pain in Patients Diagnosed With Ehlers-Danlos Syndrome and Hypermobility Spectrum Disorders. An Observational Study. Pain Res Manag. 2026;2026(1):e6664142. doi: 10.1155/prm/6664142. PubMed 42363793 ↗
09

Timeline

1 registry update since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedDate before it movedWhere the date was before it moved

Started Jun 2014 (actual). Primary completion is estimated for Jun 2027, 156 months after the start.

Primary completion moved once since we started tracking on Sep 25, 2026: Jun 2026 → Jun 2027, on Nov 5, 2026.

Earlier changes are on the record history on ClinicalTrials.gov ↗

How these figures are worked out, and which studies are left out of them.

Registered
Oct 14, 2019
First posted
Oct 21, 2019
StartActual
Jun 2014
Primary completionEst.
Jun 2027was Jun 2026
CompletionEst.
Jan 2033
Last update
Nov 5, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
Primary completion
Jun 2026→Jun 2027
Nov 5, 2026
Show all 1 update
  1. Nov 5, 2026
    Primary completion Jun 2026→Jun 2027
    + 1 other change: verification date

From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗

10

Registry details

Key details

Study ID
NCT04133272
Lead sponsor
Luca Sangiorgi
Responsible party
Luca Sangiorgi (Head of Department of Rare Skeletal Disorders, Istituto Ortopedico Rizzoli) — Sponsor-investigator
First posted
Oct 21, 2019
Start date
Jun 2014
Primary completion
Jun 2027 (estimated)
Completion
Jan 2033 (estimated)
Last update
Nov 5, 2026

Study contacts

Marina Mordenti, PhD
Contact
registri.malattierare@ior.it
+39 05 6366062
Marcella Lanza, PhD
Contact
registri.malattierare@ior.it
+39 05 6366169
Luca Sangiorgi, MD, PhD, MS
principal investigator · Istituto Ortopedico Rizzoli

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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