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OSAKA: A multicenter, four arm, randomized, open label clinical study investigating optimized dosing in a Prograf®/Advagraf®-based immunosuppressive regimen in kidney transplant subjects. Short Title: OSAKA Study (Optimizing ImmunoSuppression After Kidney Transplantation With Advagraf) ISN: PMR-EC-1210Transplantation with ADVAGRAF)

OSAKA: A multicenter, four arm, randomized, open label clinical study investigating optimized dosing in a Prograf®/Advagraf®-based immunosuppressive regimen in kidney transplant subjects. Short Title: OSAKA Study (Optimizing ImmunoSuppression After Kidney Transplantation With Advagraf) ISN: PMR-EC-1210Transplantation with ADVAGRAF)

Status
Active, not recruiting
Phases
Phase 3
Study type
Interventional
Source
DRKS
Registry ID
DRKS00000003
Enrollment
1200
Registered
2008-08-08
Start date
2008-06-02
Completion date
Unknown
Last updated
2025-04-07

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Kidney transplant Z94.0

Interventions

Group 1: Prograf® (0.2mg/kg) + MMF + Corticosteroids (24 weeks) Group 2: Advagraf® (0.2mg/kg) + MMF + Corticosteroids (24 weeks) Group 3: Advagraf® (0.3mg/kg) + MMF + Corticosteroids (24 weeks) Group

Sponsors

ASTELLAS Pharma GmbH
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Inclusion criteria

Inclusion criteria: Subject is eligible for the study if all of the following apply: 1. Age >= 18 years. 2. End stage kidney disease and a suitable candidate for primary renal transplantation or re-transplantation (unless the graft was lost from rejection within 12 month). 3. Receiving a kidney transplant from a cadaveric or living (non HLA identical) donor with compatible ABO blood type. 4. Female subject of childbearing potential must have a negative serum pregnancy test at enrollment and must agree to maintain effective birth control during the study. 5. Capable of understanding the purpose and risks of the study, fully informed and given written informed consent (signed Informed Consent has been obtained).

Exclusion criteria

Exclusion criteria: Subject will be excluded from participation if any of the following apply: 1. Receiving or having previously received an organ transplant other than a kidney. 2. Cold ischemia time of the donor kidney > 30 hours. 3. Receiving a graft from a non-heart-beating donor other than of Maastricht category 3 (withdrawn of support awaiting cardiac arrest). 4. Significant liver disease, defined as having continuously elevated SGPT/ALT and/or SGOT/AST and/or total bilirubin levels >= 2 times the upper value of the normal range of the investigational site or is receiving a graft from a hepatitis C or B positive donor. 5. Requiring initial sequential or parallel therapy with immunosuppressive antibody preparation(s). 6. Requiring ongoing dosing with a systemic immunosuppressive drug prior to transplantation. 7. Significant, uncontrolled concomitant infections and/or severe diarrhea, vomiting, active upper gastro-intestinal tract malabsorption or active peptic ulcer. 8. Pregnant woman or breast-feeding mother. 9. Subject or donor known to be HIV positive. 10. Known allergy or intolerance to tacrolimus, macrolide antibiotics, corticosteroids, basiliximab or mycophenolate mofetil or any of the product excipients. 11. Diagnosis of new-onset malignancy prior to transplantation, with the exception of basocellular or squamous cell carcinoma of the skin which had been treated successfully. 12. Currently participating in another clinical trial, and/or has taken an investigational drug within 28 days prior to enrollment. 13. Any form of substance abuse, psychiatric disorder or condition which, in the opinion of the investigator, may complicate communication with the investigator. 14. Unlikely to comply with the visits scheduled in the protocol.

Design outcomes

Primary

MeasureTime frame
The primary objective of this study is to compare the four therapy regimens with regard to efficacy failure rate. The secondary objective is to compare the efficacy and safety profiles of the four therapy regimens with each other. Efficacy failure rate will be assessed using a composite endpoint consisting of graft loss, biopsy confirmed acute rejection (BCAR) and graft dysfunction.

Secondary

MeasureTime frame
Efficacy Variables: - Renal function assessed by calculated GFR (Glomerular Filtration Rate) with MDRD formula at week 24 after transplantation - Renal function assessed by calculated creatinine clearance with Cockcroft and Gault formula at week 24 after transplantation - Acute rejection * Incidence of and time to first acute rejection * Incidence of and time to first corticosteroid-resistant acute rejection * Overall frequency of acute rejection episodes - Biopsy confirmed acute rejection * Incidence of and time to first biopsy confirmed acute rejection * Incidence of and time to first biopsy confirmed corticosteroid-resistant acute rejection * Overall frequency of biopsy confirmed acute rejection episodes * Severity of biopsy confirmed acute rejections (Banff `97 criteria)

Countries

Austria, France, Germany, Italy, Netherlands, Spain

Contacts

Public ContactKaroline Röther

Universitätsklinikum Freiburg

karoline.roether@uniklinik-freiburg.de+49 761 270-2803

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: Feb 4, 2026