Research Study of ATG and Rituximab in Renal Transplantation (RESTARRT)
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|ClinicalTrials.gov Identifier: NCT01318915|
Recruitment Status : Terminated (The stopping rule for incidence of acute rejection was met.)
First Posted : March 21, 2011
Results First Posted : October 4, 2017
Last Update Posted : December 2, 2017
|Condition or disease||Intervention/treatment||Phase|
|Renal Transplant Recipients||Drug: ATG Drug: Rituximab Drug: Tacrolimus Drug: Sirolimus Drug: MMF||Early Phase 1|
Kidneys remove excess fluid and waste from the blood. When kidneys lose their filtering ability, dangerous levels of fluid and waste accumulate in the body — a condition known as kidney failure. There are two ways to treat kidney failure. One way is to get dialysis indefinitely. The second way is to get a kidney transplant. A kidney transplant is often the best treatment for kidney failure. A kidney transplant is a surgical procedure to place a healthy kidney from a donor into a person whose kidneys no longer function properly. This study is for people who will receive a kidney transplant from a very well matched, living blood relative. The immune system is the body's defense system against illness. After transplant, the immune system will think that the new kidney is a foreign invader and will try to attack or reject the transplanted kidney. Immunosuppressive drugs protect the transplanted kidney by suppressing the immune system. People who have kidney transplants must take immunosuppressive drug for the rest of their lives. If they stop, their immune system may reject the transplanted kidney. Immunosuppressive drugs make it hard for the body to fight off infections. In addition, they can cause high blood pressure, kidney damage, plaque build-up in the blood vessels, high cholesterol, diabetes and bone disease. They may also make the body more likely to get some types of cancer (mainly cancer of the white blood cells and/or skin) and other serious side effects.
Because of the side effects of immunosuppressive drugs, an important goal of transplant research is to allow people to accept their transplanted organ without always having to take immunosuppressive drugs. This is called tolerance. The RESTARRT study is testing a combination of two medications, rituximab and anti-thymocyte globulin (ATG), to see if they can help people reduce or eliminate the need for life-long immunosuppressive medications. ATG has been used for over 10 years to treat transplant rejection; rituximab is used to treat rheumatoid arthritis and two types of cancer. ATG works on immune cells called 'T cells' that are involved in transplant rejection, while rituximab works on a different type of cell called 'B cells.' Researchers hope that targeting both these cell types at the same time will help reset the immune system so that it accepts the transplanted kidney.
Frequent visits are required during the first two months of the study. Then, study visits take place about every 4 weeks, but more often (every 2 weeks) when reducing medication doses. After two years, participants will be asked to return for check-ups every 3 months. Study visits may include consultations with the transplant doctors, physical exam, blood and/or urine samples and kidney biopsies at several times during the study. In all, participation could last up to 4 years. All study-related medications and tests are provided at no charge to the patient.
|Study Type :||Interventional (Clinical Trial)|
|Actual Enrollment :||10 participants|
|Intervention Model:||Single Group Assignment|
|Masking:||None (Open Label)|
|Official Title:||Immunosuppression With Antithymocyte Globulin, Rituximab, Tacrolimus, Mycophenolate Mofetil and Sirolimus, Followed by Withdrawal of Immunosuppression, in Living-donor Renal Transplant Recipients|
|Actual Study Start Date :||July 25, 2011|
|Actual Primary Completion Date :||June 17, 2016|
|Actual Study Completion Date :||August 25, 2017|
Experimental: Induction (Rituximab and ATG)
Study participants will undergo induction with rituximab and ATG and an initial maintenance therapy with tacrolimus, mycophenolate mofetil (MMF) and sirolimus. MMF will be discontinued on day 12. Participants will be evaluated for eligibility for tacrolimus withdrawal which must be initiated between weeks 26 and 38. Tacrolimus withdrawal must be completed in no fewer than 4 weeks and no more than 8 weeks. Then after at least 26 weeks on sirolimus monotherapy, participants will be evaluated for eligibility for sirolimus withdrawal which must be initiated between weeks 56 and 88. Sirolimus withdrawal must be completed in no fewer than 12 weeks and no more than 26 weeks.
1.5 mg/kg IV infusion on day of transplant, and 3 additional on days 2 through 7 after transplant.
Other Names:Drug: Rituximab
375 mg/m^2 IV infusion on day -6 before transplant and on day 1 after transplant.
Other Name: RituxanDrug: Tacrolimus
Taken orally. Tacrolimus dose adjusted to maintain target blood levels of 6-10 ng/mL.
Other Names:Drug: Sirolimus
Taken orally. Initial dose, 2 mg daily on day 10 post-transplant, subsequently adjusted to achieve trough levels of 8-12 ng/mL through week 56. Sirolimus withdrawal will be initiated between week 56 and week 88 in eligible participants.
Other Names:Drug: MMF
1 g twice daily on days 0 through 12
Other Name: mycophenolate mofetil
- Percentage of Participants Successfully Withdrawn From Immunosuppression and Remain Off Immunosuppression for at Least 52 Weeks. [ Time Frame: Transplantation through 52 weeks after stopping all immunosuppression. ]Participants are considered as successfully withdrawn from immunosuppression if they remain off immunosuppression for at least 52 weeks without evidence of rejection, as determined by a biopsy performed 52 weeks after completion of immunosuppression withdrawal. All participants who fail to complete immunosuppression withdrawal, regardless of reason, or fail to have a biopsy 52 weeks after completion of immunosuppression withdrawal will be considered to have failed. The endpoint will be summarized with a two-sided, 95% exact binomial confidence interval.
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01318915
|United States, California|
|University of California San Francisco Medical Center|
|San Francisco, California, United States, 94143|
|United States, Maryland|
|University of Maryland Medical Center|
|Baltimore, Maryland, United States, 21201|
|United States, Massachusetts|
|Massachusetts General Hospital|
|Boston, Massachusetts, United States, 02114|
|United States, New York|
|Rogosin Institute/New York Presbyterian-Cornell|
|New York, New York, United States, 10021|
|United States, Pennsylvania|
|Hospital at the University of Pennsylvania|
|Philadelphia, Pennsylvania, United States, 19104|
|United States, Wisconsin|
|University of Wisconsin|
|Madison, Wisconsin, United States, 53792|
|Principal Investigator:||James Markmann, MD, PhD||Massachusetts General Hospital|