A Prospective Study of Cyclophosphamide Treatment for Idiopathic Retroperitoneal Fibrosis

Idiopathic Retroperitoneal Fibrosis Clinical Trial

— IRPF  

Official title:

A Prospective Study to Evaluate the Efficacy and Safety of Cyclophosphamide in the Treatment of Idiopathic Retroperitoneal Fibrosis

Clinical Trial Details — Status: Recruiting

Administrative data

• NCT number: NCT04762810
• Other study ID #: Cyclophosphamide for IRPF
• Status: Recruiting
• Phase: Phase 4
• Start date: January 3, 2020
• Est. completion date: February 10, 2023

Study information

• Verified date: March 2021
• Source: Peking Union Medical College Hospital
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

This prospective, interventional, controlled study is aimed to evaluate the efficacy and safety of cyclophosphamide in the treatment of idiopathic retroperitoneal fibrosis, which refers to the chronic nonspecific inflammation of retroperitoneal fascia and adipose tissue that gradually evolves into fibroproliferative disease.

Description:

Idiopathic retroperitoneal fibrosis is a chronic disease that requires treatment for a few years. Patients with this disease respond well to glucocorticoid therapy, so you need to take glucocorticoid medication once the diagnosis is established. In addition, most patients need to use immunosuppressants when taking glucocorticoids. At present, the most commonly used immunosuppressants in the world are cyclophosphamide, azathioprine, methotrexate and mycophoranate, etc. The function of the above drugs is to improve the disorder of the immune system function, in order to restore the normal immune state, so that the inflammation and swelling of the affected organs disappear, restore the normal function. It should be emphasized that if the use of hormones and immunosuppressant is not standard or stopped too early, it can lead to disease recurrence. Therefore, after the disease is under control, long-term adherence to medication is needed to maintain a stable state of the disease. At present, there is no clear treatment guideline for idiopathic retroperitoneal fibrosis in the world, and the addition of immunosuppressant is also out of debate. Therefore, a comprehensive evaluation of its pathogenesis, clinical characteristics and treatment response is needed.

Recruitment information / eligibility

• Status: Recruiting
• Enrollment: 40
• Est. completion date: February 10, 2023
• Est. primary completion date: February 10, 2023
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years to 75 Years

Eligibility

Inclusion Criteria:

• age 18-75 diagnosed as IRPF. The diagnosis of idiopathic retroperitoneal fibrosis is based on the following aspects :(1) the swelling of retroperitoneal tissue , which seems neoplastic; (2) A large number of lymphocytes proliferated and infiltrated in the affected tissues and organs, and tissues showed inflammation, fibrosis and sclerosis, in which IgG4-positive cells accounted for less than 50% of plasma cells; (3) Increased inflammatory markers, such as ESR and CRP; (4) Good response to glucocorticoid therapy.

Exclusion Criteria:

• malignancy retroperitoneal fibrosis secondary to other diseases or drugs or abdominal surgeries.

Related Conditions & MeSH terms

• Fibrosis
• Idiopathic Retroperitoneal Fibrosis
• Retroperitoneal Fibrosis

Intervention

Drug:
• Cyclophosphamide and glucocorticoids
Prednisone/prednisolone: started at 0.6-0. 8mg/kg.d for 2 to 4 weeks, tapered at 5mg per 1-2 weeks before 15mg per day, and tapered at 2.5-5mg per 2 weeks to equal to or less than 5mg per day in 6 months. Cyclophosphamide 50mg per day for 6 months and decrease to 50mg Qod for 6 months.
• Glucocorticoids
Steroids have fast onset of action and multiple anti-inflammatory effects. Prednisone/prednisolone: started at 0.6-0. 8mg/kg.d for 2 to 4 weeks, tapered at 5mg per 1-2 weeks before 15mg per day, and tapered at 2.5-5mg per 2 weeks to equal to or less than 5mg per day in 6 months.

Locations

Country	Name	City	State
China	Peking Union Medical College Hospital	Beijing	Beijing

Sponsors (1)

Lead Sponsor	Collaborator
Peking Union Medical College Hospital

Country where clinical trial is conducted

China, 

References & Publications (10)

Alberici F, Palmisano A, Urban ML, Maritati F, Oliva E, Manenti L, Ferretti S, Cobelli R, Buzio C, Vaglio A. Methotrexate plus prednisone in patients with relapsing idiopathic retroperitoneal fibrosis. Ann Rheum Dis. 2013 Sep 1;72(9):1584-6. doi: 10.1136/annrheumdis-2013-203267. Epub 2013 May 21. — View Citation

Binder M, Uhl M, Wiech T, Kollert F, Thiel J, Sass JO, Walker UA, Peter HH, Warnatz K. Cyclophosphamide is a highly effective and safe induction therapy in chronic periaortitis: a long-term follow-up of 35 patients with chronic periaortitis. Ann Rheum Dis. 2012 Feb;71(2):311-2. doi: 10.1136/annrheumdis-2011-200148. Epub 2011 Aug 22. — View Citation

Fatima J, Gota C, Clair DG, Billings SD, Gornik HL. Inflammatory abdominal aortic aneurysm with retroperitoneal fibrosis. Circulation. 2014 Oct 7;130(15):1300-2. doi: 10.1161/CIRCULATIONAHA.114.010173. — View Citation

Fernando A, Pattison J, Horsfield C, D'Cruz D, Cook G, O'Brien T. [(18)F]-Fluorodeoxyglucose Positron Emission Tomography in the Diagnosis, Treatment Stratification, and Monitoring of Patients with Retroperitoneal Fibrosis: A Prospective Clinical Study. Eur Urol. 2017 Jun;71(6):926-933. doi: 10.1016/j.eururo.2016.10.046. Epub 2016 Nov 18. — View Citation

Jagadesham VP, Scott DJ, Carding SR. Abdominal aortic aneurysms: an autoimmune disease? Trends Mol Med. 2008 Dec;14(12):522-9. doi: 10.1016/j.molmed.2008.09.008. Epub 2008 Nov 6. Review. — View Citation

Marzano A, Trapani A, Leone N, Actis GC, Rizzetto M. Treatment of idiopathic retroperitoneal fibrosis using cyclosporin. Ann Rheum Dis. 2001 Apr;60(4):427-8. — View Citation

Qian Q, Kashani KB, Miller DV. Ruptured abdominal aortic aneurysm related to IgG4 periaortitis. N Engl J Med. 2009 Sep 10;361(11):1121-3. doi: 10.1056/NEJMc0905265. — View Citation

Scheel PJ Jr, Feeley N, Sozio SM. Combined prednisone and mycophenolate mofetil treatment for retroperitoneal fibrosis: a case series. Ann Intern Med. 2011 Jan 4;154(1):31-6. doi: 10.7326/0003-4819-154-1-201101040-00005. — View Citation

Vaglio A, Palmisano A, Alberici F, Maggiore U, Ferretti S, Cobelli R, Ferrozzi F, Corradi D, Salvarani C, Buzio C. Prednisone versus tamoxifen in patients with idiopathic retroperitoneal fibrosis: an open-label randomised controlled trial. Lancet. 2011 Jul 23;378(9788):338-46. doi: 10.1016/S0140-6736(11)60934-3. Epub 2011 Jul 4. — View Citation

Vaglio A, Salvarani C, Buzio C. Retroperitoneal fibrosis. Lancet. 2006 Jan 21;367(9506):241-51. Review. — View Citation

Outcome

Type	Measure	Description	Time frame	Safety issue
Other	adverse events	Patients have adverse events due to the drug treatment.	5 years
Primary	remission	Patients achieve remission in symptoms and laboratory tets or radiologic images and have a low diseae activity after treatment.	5 years
Secondary	relapse	Patients have a recurrence of symptoms or laboratory abnormalities and have a considerable diseae activity after achieving remission.	5 years