ClinicalTrials.gg
CompletedNCT02983253Updated Dec 20, 2019

Immunmodulation in Patients With HHT

An observational study in Hereditary Haemorrhagic Telangiectasia (HHT), sponsored by University Hospital, Essen. Completed at 1 site in Germany. Open to participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2019-12-20.

Sponsored by University Hospital, Essen · Observational

Study type
Observational
Model
Cohort
Time perspective
Cross-sectional
Enrollment
124
Ages
18 Years and older
Sex
All
01

Study summary

Hereditary haemorrhagic telangiectasia (HHT), also known as Rendu-Osler-Weber syndrome, is an inherited multisystemic disorder. Literature suggests that HHT is often associated with higher frequency of infectious diseases.

The purpose of this study is to evaluate a variety of immunologic parameters in the blood serum of HHT patients in comparison to probands.

Read the detailed description

Hereditary haemorrhagic telangiectasia (HHT), also known as Rendu-Osler-Weber syndrome, is an inherited multisystemic disorder with recurrent epistaxis, mucocutaneous telangiectasia and visceral arteriovenous malformations. Literature and the investigators' observation suggest that HHT is often associated with higher frequency of infectious diseases. This might be a hint for a immunocompromised situation.

The purpose of this study is to evaluate a variety of immunologic parameters in the blood serum of HHT patients in comparison to probands.

02

Conditions studied

  • Hereditary Haemorrhagic Telangiectasia (HHT)
03

In context

Telangiectasia, Hereditary Hemorrhagic

102 studies on the registry are indexed under Telangiectasia, Hereditary Hemorrhagic; 24 are open to participants now.

This study's enrollment of 124 is below the median of 207 across 39 observational studies indexed under Telangiectasia, Hereditary Hemorrhagic.

Browse Telangiectasia, Hereditary Hemorrhagic studies →

Lead sponsor

University Hospital, Essen is the lead sponsor of 116 studies on the registry; 33 are open to participants now.

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

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
Yes
Sampling method
Non-probability sample

Study population

Inclusion Criteria: Aged 18 or over, HHT,

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

  • aged 18 or over, HHT

Exclusion criteria

Exclusion Criteria:

  • Unable to provide informed consent
05

Study design

Observational model
Cohort
Time perspective
Cross-sectional
Enrollment
124 participants (actual)
Patient registry
No
Biospecimen retention
Samples without dna

Groups and cohorts

  • Patients with HHT

    blood sample of patients with HHT

    Other: blood sample

  • probands

    blood sample of healthy controls

    Other: blood sample

Interventions

  • Otherblood sample

    none, only laboratory tests on blood serum

06

What researchers measure

Primary outcomes

  1. Amounts of leucocytes in patients with HHT

    Time frame: November 2016 - December 2018

Secondary outcomes

  1. Differences in distribution of leucocytes in patients with HHT

    Time frame: November 2016 - December 2018

Other outcomes

  1. Functional properties of leucocytes in patients with HHT

    Time frame: November 2016 - December 2018

  2. Differences in size of leucocytes in patients with HHT

    Time frame: November 2016 - December 2018

07

Study locations

1 site
  • University Hospital Essen
    Essen, 45147, Germany
08

References and documents

Individual participant data

Plan to share: Undecided

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
Not marked actual or estimatedDates not marked actual or estimated

The record gives a start of Jun 2016, a primary completion of Oct 2019 and a completion of Oct 2019. It does not say whether these dates are actual or estimated.

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

Registered
Dec 2, 2016
First posted
Dec 6, 2016
Start
Jun 2016
Primary completionActual
Oct 2019
CompletionActual
Oct 2019
Last update
Dec 20, 2019
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.
No changes since tracking began. The registry record was last updated on Dec 20, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT02983253
Responsible party
Urban Geisthoff (Prof. Dr. med. Urban Geisthoff, University Hospital, Essen) — Principal investigator
First posted
Dec 6, 2016
Start date
Jun 2016
Primary completion
Oct 2019
Completion
Oct 2019
Last update
Dec 20, 2019

Study contacts

Urban Geisthoff, Prof.Dr.med.
principal investigator · University Hospital, Essen

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Dec 2019. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion