Clinical Trial to Assess Efficacy, Tolerability of Rising Doses of Clodronate in Painful Knee Osteoarthritis Patients

Osteoarthritis of Knee Clinical Trial

Official title:

Adaptative, Multicenter, Randomized, Double-blind, Parallel-group, Placebo Controlled, Clinical Trial, on the Efficacy and Tolerability of Different Escalating Doses of Intra-articular Clodronate in Patients With Painful Knee Osteoarthritis

Clinical Trial Details — Status: Recruiting

Administrative data

• NCT number: NCT06263517
• Other study ID #: SPA-S-899-01-21
• Secondary ID: 2021-003124-33
• Status: Recruiting
• Phase: Phase 2/Phase 3
• Start date: October 12, 2023
• Est. completion date: October 2025

Study information

• Verified date: January 2024
• Source: SPA Società Prodotti Antibiotici S.p.A.
• Contact: Maria Rosa Galmozzi
• Phone: 0289139429
• Email: mariarosa.galmozzi[@]spafarma.com
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

The goal of this clinical trial is to to clarify which is the best dose of administration, to select a dose and to confirm the therapeutic efficacy of clodronate in patients with painful knee osteoarthritis (OA). The clinical trial will be divided in two parts.

The main questions it aims to answer are:

• in Phase II, to assess the safety and tolerability of different escalating doses of intra articular (IA) clodronate

• in Phase II, to set a defined therapeutic dose (DTD) to be used in Phase III

• in Phase III, to assess the safety and tolerability of different escalating doses of IA clodronate to confirm and extensively evaluate the therapeutic efficacy and safety of the clodronate DTD in patients with knee OA

Description:

The phase II will be a multicenter, double-blind, randomized, placebo-controlled, parallel group four-arm study, according to the treatment dose (dose finding).

Briefly, 4 groups of 74 patients (in order to have 64 fully evaluated patients taking into consideration 10 patients dropped out), i.e. a total of 296 patients, with knee OA each will be randomly allocated to the following treatments:

1. IA clodronate 2 mg/2 ml once a week for 4 weeks (total clodronate dose = 8 mg).

2. IA clodronate 5 mg/2 ml once a week for 4 weeks (total clodronate dose = 20 mg).

3. IA clodronate 10 mg/2 ml once a week for 4 weeks (total clodronate dose = 40 mg).

4. Placebo 2 ml once a week for 4 weeks (total clodronate dose = 0 mg).

At the end of phase II, the minimum effective clodronate dose will be selected as DTD for the Phase III.

The phase III will be a multicenter, double-blind, randomized, placebo-controlled, two parallel groups (DTD vs. placebo) study.

Briefly, patients with knee OA will be randomly assigned to two experimental groups:

1. the DTD defined during the Phase II.

2. Matching placebo. The sample size of Phase III will be definitively calculated according to the extent of pain Visual Analogue Scale (VAS) reduction observed in the Phase II.

Recruitment information / eligibility

• Status: Recruiting
• Enrollment: 296
• Est. completion date: October 2025
• Est. primary completion date: July 2025
• Accepts healthy volunteers: No
• Gender: All
• Age group: 50 Years to 75 Years

Eligibility

Inclusion Criteria:

• Female and male patients aged 50 up to 75 years at ICF signature.

• Diagnosis of knee OA according to the American College of Rheumatology, confirmed by Rx during the screening (a Rx performed in the last 3 months before Baseline is accepted).

• Kellgren-Lawrence radiographic score between 2 and 3 degrees in the tibiofemoral joint.

• Symptomatic knee OA (pain) since at least 6 months with a knee pain (VAS) ranging between 40 and 80 mm at Screening visit (the figure should be confirmed at Baseline).

• Female patients of childbearing potential must have a negative pregnancy test before each treat-ment and during the Visit 5 - Week 4 and they must use adequate methods of contraception throughout the course of the study.

• A signed ICF by the patient after exhaustive study discussion with the investigators.

Exclusion Criteria:

• BMI > 35 kg/m² (Class II obesity).

• Joint instability due to other reasons than knee OA, such as f.i. algo dystrophic syndrome, either partial or complete rupture of internal / externals ligaments, kneecap instability, etc.

• Otherwise located lower limb pain, such as hip pain.

• Other musculoskeletal disorders related to the target knee.

• Any treatment with IA drugs in the last 3 months before Day 0 - Baseline (including any formulation of corticosteroids or hyaluronic acid injections).

• Corticosteroid use by any systemic route, and hyaluronic acid injection or intraarticular corticosteroids for any other joint in the previous month will not be permitted.

• Any treatment with systemic non-steroidal anti-inflammatory drugs (NSAIDs) in the week before enrolment, or any steroid anti-inflammatory drugs and chondroprotective drugs in the thirty (30) days before month before Baseline.

• Any treatment with systemic bisphosphonates in the last twelve (12) months before Baseline.

• Any treatment with Glucosamine or Chondroitin sulfate, Diacerein and Matrix metalloproteinase (MMP) inhibitors in the 4 weeks before Baseline.

• Any treatment with Denosumab in the twelve (12) months before Baseline.

• Any treatment with Paracetamol in the twelve (12) hours before Baseline.

• Any knee surgery in the past or knee arthroplasty.

• Any diagnostic or surgical arthroscopy of the knee in the six (6) months before Baseline.

• Any jaw osteonecrosis in the last twenty-four (24) months before Baseline or at a risk of jaw osteonecrosis.

• Any known hypersensitivity to the drug in the study to its excipients or other bisphosphonates, and any hypersensitivity to Paracetamol (rescue drug).

• Any participation in a clinical study in which the last administration of the investigational medicinal product was within two (2) weeks before consenting to study participation (i.e.signing ICF).

• Inadequate organ function defined by the following laboratory parameters:

1. Absolute Neutrophil Count (ANC) < 1500/µl.

2. Hemoglobin (Hb) < 9 g/dl (< Hb 5.6 mmol/L)

3. Platelet Count < 100.000/µl

4. Serum Creatinine > 1.5 x Upper limit normal (ULN) or estimated Glomerular Filtration Rate (eGFR) < 60 mL/min (as per Cockroft-Gault formula).

5. Alanine aminotransferase (ALT) or Aspartate aminotransferase (AST)> 1.5 x Upper limit normal(ULN).

6. Serum Total Bilirubin > 1.5 x Upper limit normal (ULN).

• Pregnant or breastfeeding women, or women planning to become pregnant during the study.

• Any positive or suspected history of alcoholism or drug use.

• Clinically significant (i.e.) gastrointestinal, renal, hepatic, pulmonary, cardiovascular or neurological disease that could interfere with the outcome of the study or the patient's ability to comply with study requirements.

• Patients unwilling or unable to comply with the protocol.

Related Conditions & MeSH terms

• Osteoarthritis
• Osteoarthritis of Knee
• Osteoarthritis, Knee

Intervention

Drug:
• Clodronate
For Arm 1, patients will be treated with intra articular clodronate 2 mg/2 ml from Baseline to Week 3
• Clodronate
For Arm 2, patients will be treated with intra articular clodronate 5 mg/2 ml from Baseline to Week 3
• Clodronate
For Arm 3, patients will be treated with intra articular clodronate 10 mg/2 ml from Baseline to Week 3
• Placebo
For Arm 4, patients will be treated with Placebo 2 ml from Baseline to Week 3

Locations

Country	Name	City	State
Italy	Centro Riabilitativo Polifunzionale Teresio Borsalino	Alessandria
Italy	IRCCS Istituti Clinici Maugeri	Castel Goffredo	Mantova
Italy	Ospedale San Pellegrino	Castiglione delle Stiviere	Mantova
Italy	IRCCS Ospedale Policlinico San Martino	Genova
Italy	Azienda Ospedaliera Universitaria San Luigi Gonzaga	Orbassano	Torino
Italy	Ospedale Israelitico	Roma
Italy	Ospedale San Pietro	Rome
Italy	Ospedale San Paolo	Savona
Italy	Azienda Ospedaliero Universitaria Senese	Siena
Italy	Ospedale Policlinico "G.B. Rossi" Borgo Roma	Verona
Italy	Ospedale Civile Servizio di Riabilitazione Funzionale	Volta Mantovana	Mantova

Sponsors (2)

Lead Sponsor	Collaborator
SPA Società Prodotti Antibiotici S.p.A.	Pharmaceutical Development and Services

Country where clinical trial is conducted

Italy, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Other	SAE Reporting	Recording of Serious adverse event (SAE) and abnormal laboratory or any clinical signs of intolerance across the patients' visits.	At Screening, at Baseline, at Weeks 1, 2, 3, 4, 5, 7, 11, 15
Other	AE Reporting	Recording of adverse event (AE)	At Screening, at Baseline, at Weeks 1, 2, 3, 4, 5, 7, 11, 15
Other	Clinical signs of intolerance Recording	Recording of any clinical signs of intolerance across the patients' visits	At Baseline, at Weeks 1, 2, 3, 4, 5, 7, 11, 15
Primary	Efficacy: VAS Reduction	A clodronate dose will be considered as effective when a = 10 mm reduction in the Visual Analogue Scale (VAS) of knee pain will be observed at Week 7 vs. Placebo	Week 7
Secondary	VAS mean changes	Mean changes in the Visual Analogue Scale (VAS) of knee pain observed at each other visit than Week 7 vs. Placebo and vs Baseline.	At Screening, at Baseline, at Weeks 1, 2, 3, 4, 5, 11, 15
Secondary	VAS mean changes observed 120 minutes after IA	Mean changes in the Visual Analogue Scale (VAS) of knee pain observed 120 minutes after IA injection at Baseline, Weeks 1, 2 and 3 vs predose assessment	At Baseline and at Weeks 1, 2 and 3
Secondary	Lequesne Algofunctional Index mean changes	Mean changes in the Lequesne Algofunctional Index at each visit vs Placebo and vs Baseline.	At Screening, at Baseline, at Weeks 1, 2, 3, 4, 5, 7, 11, 15
Secondary	WOMAC mean changes	Mean changes in the (WOMAC) Western Scale Ontario MacMaster Index at each visit vs Placebo and vs Baseline.	At Screening, at Baseline, at Weeks 1, 2, 3, 4, 5, 7, 11, 15
Secondary	Range of motion mean changes	Mean changes in the Range of Motion at each visit vs Placebo and vs Baseline.	At Screening, at Baseline, at Weeks 1, 2, 3, 4, 5, 7, 11, 15
Secondary	Paracetamol consumption	Use of rescue drug consumption (paracetamol) across the patients visits	At Baseline, at Weeks 1, 2, 3, 4, 5, 7, 11, 15