ClinicalTrials.gg
RecruitingNCT02638389Updated Feb 24, 2023

Efficacy and Safety of Sirolimus in Vascular Anomalies That Are Refractory to Standard Care

A Phase 3 interventional study of Sirolimus in Vascular Malformations, sponsored by Cliniques universitaires Saint-Luc- Université Catholique de Louvain. Recruiting at 3 sites in 3 countries. Open to participants aged 3 Months to 70 Years. Per ClinicalTrials.gov, last updated 2023-02-24.

Sponsored by Cliniques universitaires Saint-Luc- Université Catholique de Louvain · Phase 3, Interventional, and Treatment

From the registry’s dates

  • Primary completion was expected by Apr 2025, 1 year 7 months ago, but the record still lists the study as recruiting.
  • Started Jan 2016; still recruiting 10 years 9 months later.
Phase
Phase 3
Study type
Interventional
Enrollment
250
Allocation
Not applicable
Ages
3 Months to 70 Years
Sex
All
01

Study summary

The phosphatidylinositol 3-kinase (PI3Kinase)/Protein Kinase B (AKT)/mammalian target of rapamycin (mTor) pathway plays a role on the development and the venous/lymphatic vascular organisations.

The investigators want to study the efficacy and the safety of Rapamycin, an mTor inhibitor.

Read the detailed description

The complex vascular malformations induce chronical pains and organic dysfunctions causing significant morbidity and mortality. Therefore, the investigators need to establish guidelines in order to treat these pathologies. Standard treatments such as surgery or interventional radiology are of limited efficacy and related to a high level of recurrences as well as complications. Recent preclinical studies have shown the important role of the PI3Kinase/AKT/mTor pathway on the development and the venous/lymphatic vascular organisations suggesting an appealing therapeutic target to treat patients with venous, lympathic or complex vascular malformations.

Investigators will realize a multicentric phase III study enrolling a higher number of patients to statistically evaluate the efficacy and the safety of the Rapamycin, an mTOR inhibitor, in the treatment of children and adults with vascular malformations for which conventional therapies such as surgery or sclerotherapy are ineffective or associated with high risk of important complications. Nearly 250 patients (200 adults and 50 children) will be enrolled in several european centers.

02

Conditions studied

  • Vascular Malformations

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03

In context

Vascular Malformations

79 studies on the registry are indexed under Vascular Malformations; 33 are open to participants now.

This study's planned enrollment of 250 is above the median of 55 across 49 interventional studies indexed under Vascular Malformations.

Browse Vascular Malformations studies →

Lead sponsor

Cliniques universitaires Saint-Luc- Université Catholique de Louvain is the lead sponsor of 350 studies on the registry; 64 are open to participants now.

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

04

Who can participate

Ages eligible
3 Months to 70 Years
Sexes eligible
All
Accepts healthy volunteers
No

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

  • Patients with complex vascular anomalies that are to standard care such as medical treatment, surgical resection and/or sclerotherapy/embolization (ineffective or accompanied by major complications)
  • Patients must have adequate medullary function: Hemoglobine> 10,0 g/dl, neutrophils >1500/mm³ and > 100.000/mm³
  • Patients must have the following laboratory values:
  • Total serum ≤ 1.5 x (or totally bilirubin ≤ 3 x ULN with direct bilirubin ≤ 1.5 x ULN in patients with well documented Gilbert Syndrome)
  • Serum (ALT) and aspartate aminotransferase (AST) ≤ 3 x ULN (or \< 5.0 x ULN if hepatic are present)
  • Serum creatinine 1.5 x ULN. If the serum creatinine is ≥ 1.5 x ULN, then a 24-hour must be conducted and the result must be ≥ 60 mL/min.
  • > 50
  • Patients have to be able to sign the
  • Women in age of procreation have to be informed that methods are mandatory during the study time

Exclusion criteria

Exclusion Criteria:

  • Any of the following concurrent severe and/or uncontrolled medical conditions, which could compromise participation in the study or interfere with the study results:
  • Impaired cardiac function or cardiac diseases, including unstable angina pectoris, ventricular arrhythmia, valvular disease with documented compromise in cardiac function, myocardial infarction within the last 6 months, documented by persistent elevated cardiac enzymes or persistent regional wall abnormalities on assessment of function, history of documented congestive heart failure ( functional classification III-IV), documented cardiomyopathy, family history of congenital long or short , or known history of QT/QTc prolongation of Torsades de Pointes (TdP)
  • Impairment of Gastro-Intestinal (GI) function or GI disease that may significantly alter the absorption of sirolimus (e.g., ulcerative diseases, uncontrolled nausea, vomiting, diarrhea ≥ Grade 2, malabsorption syndrome, or small bowel resection)
  • Known to drugs or metabolites from similar classes as study treatment.
  • Patient has other concurrent severe and /or uncontrolled medical condition that would,in the investigator's judgment, participation in the clinical study (e.g. acute or chronic pancreatitis, liver cirrhosis, active chronic hepatitis, severely impaired lung function with a spirometry ≤ 50% of the normal predicted value and/or O2 saturation ≤ 88% at rest, etc.)
  • patients, including known seropositivity for
  • Pregnant or lactating women
  • Prior treatment with PI3K and/or mTOR inhibitors
Terms in these criteria, in plain language(18)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Relapsed and refractory

Relapsed: the illness came back after treatment had worked. Refractory: it did not respond to treatment, or stopped responding while still on it.

Platelets

Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.

Bilirubin

A yellow substance made when red blood cells are broken down, which the liver clears. A high level can mean a problem with the liver or the bile ducts.

Criteria often allow more for people with Gilbert’s syndrome, a harmless inherited condition that raises bilirubin.

ULN (upper limit of normal)

The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.

“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.

ALT and AST (liver enzymes)

Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.

Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.

Metastases

Cancer that has spread from where it began to other parts of the body. “Metastatic” cancer is cancer that has spread this way.

Creatinine clearance (CrCl)

How quickly the kidneys clear creatinine, a waste product, from the blood. A study may estimate it from a blood test with age, weight and sex (often by the Cockcroft–Gault formula), or measure it using blood and urine collected over a set time. Given in mL/min; higher is better.

Karnofsky performance status (KPS)

A 0–100 scale of how well someone can carry out everyday activities. 100 is no complaints and no signs of illness; 70 is able to look after yourself but not to work or keep up normal activity; 50 is needing considerable help and frequent medical care.

Studies often ask for 60 or 70 and above. Your doctor gives the score.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

LVEF (left ventricular ejection fraction)

The share of blood the heart’s main pumping chamber (the left ventricle) pushes out with each beat, measured by an echocardiogram (heart ultrasound) or a MUGA scan. About 50–70% is normal.

NYHA class (heart failure)

The New York Heart Association’s four classes of how much heart failure limits physical activity.

I
No limits: ordinary activity causes no undue tiredness or breathlessness.
II
Slight limits: comfortable at rest, ordinary activity causes symptoms.
III
Marked limits: comfortable at rest, less than ordinary activity causes symptoms.
IV
Symptoms even at rest; any activity makes them worse.

Studies set their own limit — many outside heart failure leave out class III–IV, while heart failure studies may ask for a particular class. Check the class this study names.

QT and QTc

On an ECG, the QT interval is the time the heart’s lower chambers take to activate electrically and recover in each beat. QTc is that time adjusted for heart rate (QTcF by Fridericia’s formula, QTcB by Bazett’s). Some medicines lengthen it, and a long QTc can raise the risk of a dangerous heart rhythm.

The study may name a correction formula and a limit in milliseconds, often around 450–480.

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

Immunosuppression

A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.

Read whether the line is about a condition or about medicines, and which medicines and doses it means.

HIV

The human immunodeficiency virus, which weakens the immune system.

Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.

05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
250 participants (estimated)

Study arms

  • Experimental
    Patients with vascular malformations

    Patients with venous, lympathic or complex vascular malformations (KTS, PTEN, etc.) will receive sirolimus after completion of inclusion criteria

    Drug: Sirolimus

Interventions

  • evaluate the efficacy and safety of sirolimus in these patients

    Also known as: Rapamycine

06

What researchers measure

Primary outcomes

  1. Self-assesment (or parent assesment), using visual anagogic scale (0-10) of efficacy of sirolimus

    * Global treatment efficacy * Pain * Local complications/symptoms (bleeding, skin tension, esthetic and functional impairment)

    Time frame: every 3 months, up to 2-year period.

Secondary outcomes

  1. Number of enrolled patients with treatment-related adverse events as assessed by CTCAE v4.0

    Time frame: every month during the first three months and then every three months for a 2-year-treatment period

  2. Self assessment of quality of life change induced by sirolimus

    Measured by quality of life questionnaire (adapted to MOS SF-36 survey).

    Time frame: every 3 months, up to 2-year period.

  3. Volumetric changes of the malformation on sirolimus, based on magnetic resonance imaging (MRI) 12 months after sirolimus onset.

    Relative change of volume of the vascular malformation between the baseline MRI (before sirolimus onset) and the 12-month MRI (during sirolimus treatment)

    Time frame: At 12 month

  4. Efficacy of sirolimus

    Change in plasma levels fibrinogen and/ or D-dimers, reflecting improvement in an abnormal intravascular coagulation consumption

    Time frame: every three months, up to 2-year period

  5. Efficacy of sirolimus measured on digital photographs

    Qualitative assessment of efficacy on digital photographs

    Time frame: every three months, up to 2-year period

07

Study locations

2 of 3 sites recruiting
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Feb 24, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT02638389
Responsible party
Sponsor
First posted
Dec 23, 2015
Start date
Jan 25, 2016
Primary completion
Apr 1, 2025 (estimated)
Completion
Apr 1, 2030 (estimated)
Last update
Feb 24, 2023

Study contacts

Laurence M. Boon, MD, PhD
Contact
laurence.boon@uclouvain.be
+ 32-2-764 8020
Laurence M Boon, MD, PhD
principal investigator · Cliniques universitaires Saint-Luc

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

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Studies of the drug tested here: Sirolimus

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