Overview
Sponsor-declared trial summary
Heart failure
To assess at day 5 the effectiveness of acetazolamide added to conventional treatment on decongestion (interventional group) compared to standard treatment (control group) in patients with ambulatory HF previously treated with furosemide (with fraction of left ventricular ejection impaired or not) and monitored by remo…
Key facts
- Sponsor
- Centre Hospitalier Universitaire De Montpellier
- Participant type
- Patients
- Age range
- 18-64 years, 65+ years
- Gender
- Male and Female
- Therapeutic area
- Diseases [C] - Cardiovascular Diseases [C14]
- Decision date (initial)
- 2026-06-15
- Transition trial
- No
- Low-intervention
- No
- Rare-disease indication
- No
- Vulnerable population
- No
- Funding sources
- DGOS
Trial design
CTIS Part I — objectives, methods, condition coding
Main objective
Scope: Efficacy, Safety
To assess at day 5 the effectiveness of acetazolamide added to conventional treatment on decongestion (interventional group) compared to standard treatment (control group) in patients with ambulatory HF previously treated with furosemide (with fraction of left ventricular ejection impaired or not) and monitored by remote monitoring
Secondary objectives 10
- To assess the effectiveness of acetazolamide added to conventional treatment in ambulatory HF patients monitored via telemonitoring as compared with conventional treatment on Decongestion during the first 5 days
- To assess the effectiveness of acetazolamide added to conventional treatment in ambulatory HF patients monitored via telemonitoring as compared with conventional treatment on diuretic effectiveness on D5
- To assess the effectiveness of acetazolamide added to conventional treatment in ambulatory HF patients monitored via telemonitoring as compared with conventional treatment on evolution of NtproBNP between D0 and D5
- To assess the effectiveness of acetazolamide added to conventional treatment in ambulatory HF patients monitored via telemonitoring as compared with conventional treatment on quality of life and dyspnea during the first 5 days
- To assess the effectiveness of acetazolamide added to conventional treatment in ambulatory HF patients monitored via telemonitoring as compared with conventional treatment on need for emergent/unplanned consultation or hospitalization for acute HF at day 90
- Describe clinical (weight, VAS dyspnea, BP, HR, RHF and LHF signs) and biological (NtproBNP) decongestion evolution between D5 and D15 (in percentage)
- Describe clinical (weight, VAS dyspnea, BP, HR, RHF and LHF signs) and biological (NtproBNP) decongestion evolution at D15
- Evaluation and comparison of the occurrence of complications and adverse effects in the two groups at Day 5 (in particular: hyponatremia, acute renal failure, hypokalemia, metabolic acidosis, arterial hypotension, low cardiac output/cardiogenic shock)
- Need for hospitalization for treatment failure or poor tolerance on D5 and D15
- Comparison of hospital medical costs at D90 between the two groups studied (Health economic objective)
Conditions and MedDRA coding
Heart failure
| Version | Level | Code | Term | System organ class |
|---|---|---|---|---|
| 25.0 | LLT | 10086980 | Congestive heart failure with acute exacerbation | 100000004848 |
Eligibility criteria
Principal inclusion / exclusion criteria as submitted by sponsor
Inclusion criteria 6
- Age ≥ 18
- Known HF with impaired, midly-reduced or preserved LVEF
- Under guideline directed medical therapy for HF according to ESC Heart Failure Guidelines applicable at inclusion
- Previously followed (or included at hospital discharge) by remote monitoring allowing daily weight by connected scale (i.e. Careline®, Optified-self®, NewCard®, Implicity®)
- Under furosemide diuretic treatment ≥ 20mg/day for at least 30 days prior to inclusion
- Current unplanned hospitalization or unplanned/emergent consultation for acute/decompensation HF
Exclusion criteria 21
- Subject unable to express their consent and sign informed consent form
- Chronic ventricular assist device or heart transplant patients
- Acute heart failure from recent acute coronary syndrome (< 1 month)
- Severe chronic renal failure or dialysis (GFR < 20 ml/min)
- History of renal colic, hyperchloremic acidosis and wheat allergy (other than coeliac disease)
- Known severe hepatic insufficiency defined by a PTT < 50% or a Child-Pugh score C and/or a known (clinial or biological) supplemented adrenal insufficiency
- Intolerance to sulphonamides
- Hypersensitivity to the active substance (Acetazolamide) or to any of the excipients (Calcium carbonate, wheat starch, gelatine, magnesium stearate)
- Concomitant use of carbamazepine or quinidinics (hydroquinidine, quinidine)
- Low cardiac output syndrome/cardiogenic shock
- Current use of acetazolamide or any other carbonic anhydrase inhibitor, including but not limited to topical ophthalmic formulations (e.g., brinzolamide, dorzolamide, methazolamide)
- Subject not covered by public health insurance
- Refusal to participate (absence of informed consent)
- Subject under guardianship, legal protection, or deprived of liberty
- Pregnant or breastfeeding women
- Subject under law protection and prisoners
- Women of child bearing potential, unless they are using an effective method of birth control (i.e. oral contraceptives, implantable contraceptives, injectable contraceptives, transdermal contraceptives, intrauterine devices, male or female condoms with spermicide, abstinence, or a sterile sexual partner)
- Subject unable to comprehend or adhere to the protocol and follow-up
- Concurrent participation in another interventional study
- Concomitant use of lithium, valproic acid and valpromide
- Current use of high-dose aspirin (>300 mg/day)
Endpoints
Primary and secondary outcome measures (English text)
Primary endpoints 1
- Percentage of patients with weight loss > 2kg on connected scale (Remote telemonitoring system) on D5 in each of the two groups (experimental vs control)
Secondary endpoints 9
- Percentage of weight variation between D0 and D5
- Diuretic effectiveness on D5 calculated by calculating natriuresis corrected by mg of furosemide equivalence from the urinary ionogram performed on D5
- Evolution of NtproBNP between D0 and D5
- Evolution of the EQ-5D-5L value between D0 and D5
- Evolution of the VAS score for dyspnea between D0 and D5
- Rate of unplanned/emergency consultation or hospitalization for HF at D90
- Rate of deaths from all causes or for HF at D90
- Evolution of clinical (weight, VAS dyspnea, BP, HR, RHF and LHF signs) and biological (NtproBNP) between D5 and D15
- Evolution of clinical (weight, VAS dyspnea, BP, HR, RHF and LHF signs) and biological (NtproBNP) at D15
Investigational products
Investigational medicinal products (IMPs), comparators, placebo, auxiliary
Test 1
PRD11458168 · Product
- Active substance
- Acetazolamide
- Pharmaceutical form
- TABLET
- Route of administration
- ORAL USE
- Max daily dose
- 1000 mg milligram(s)
- Max total dose
- 3500 mg milligram(s)
- Max treatment duration
- 5 Day(s)
- Authorisation status
- Authorised
- ATC code
- S01EC01 — ACETAZOLAMIDE
- Marketing authorisation
- PL 12762/0147
- MA holder
- MERCURY PHARMACEUTICALS LTD.
- MA country
- XI
- Paediatric formulation
- No
- Orphan designation
- No
- Modified vs. Marketing Authorisation
- Yes
- Modification description
- Label added on packaging
Sponsors and contacts
Sponsor organisations, regulatory contacts, third parties
Centre Hospitalier Universitaire De Montpellier
- Sponsor organisation
- Centre Hospitalier Universitaire De Montpellier
- Address
- 191 Avenue Du Doyen Gaston Giraud
- City
- Montpellier Cedex 5
- Postcode
- 34295
- Country
- France
Scientific contact point
- Organisation
- Centre Hospitalier Universitaire De Montpellier
- Contact name
- François ROUBILLE
Public contact point
- Organisation
- Centre Hospitalier Universitaire De Montpellier
- Contact name
- Sylvie GRANDEMANGE
Locations
1 EU/EEA country · 25 investigational sites
By country
| Country | MS status | Planned subjects | Sites |
|---|---|---|---|
| France | Authorised, recruitment pending | 1,050 | 25 |
| Rest of world | — | 0 | — |
Investigational sites
Results and documents
Annex IV summary of results, Annex V layperson summary, and all documents registered in CTIS for this trial
Documents 11 files
Public protocol annexes, IB summaries, regulatory submissions and post-authorisation documents registered in CTIS.
| Type | Title | Version |
|---|---|---|
| Protocol (for publication) | D1_Protocol_FP_2025-524344-35-00 | 2 |
| Protocol (for publication) | D4_Questionnaire_EQ-5D-5L | 1 |
| Recruitment arrangements (for publication) | K1_Recruitment arrangements | 1 |
| Subject information and informed consent form (for publication) | L1_ICF | 2 |
| Subject information and informed consent form (for publication) | L1_SIS | 3 |
| Subject information and informed consent form (for publication) | L2_Other subject information material_Livret_Etude | 2 |
| Summary of Product Characteristics (SmPC) (for publication) | E2_SmPC_Acetazolamide | 1.0 |
| Synopsis of the protocol (for publication) | D1_Protocol_Synopsis_ENG_2025-524344-35-00 | 2 |
| Synopsis of the protocol (for publication) | D1_Protocol_Synopsis_FR_2025-524344-35-00 | 2 |
| Synopsis of the protocol (for publication) | D1_Protocol_SynopsisLay_ENG_2025-524344-35-00 | 1.0 |
| Synopsis of the protocol (for publication) | D1_Protocol_SynopsisLay_FR_2025-524344-35-00 | 2.0 |
Application history
1 submissions — initial application plus substantial / non-substantial modifications
| # | Type | Code | Submitted | Reference MS | Conclusion | Decision date |
|---|---|---|---|---|---|---|
| 1 | INITIAL | IN | 2026-03-20 | France | Acceptable 2026-06-15
|
2026-06-15 |