Peripheral Blood Allogenic Stem Cell Transplantation Using Non-anti Thymocyte Globulin Regimens in Severe Aplastic Anemia Patients

Severe Aplastic Anemia Clinical Trial

Official title:

Outcome of Peripheral Blood Allogenic Stem Cell Transplantation Using Non-anti Thymocyte Globulin (ATG ) Conditioning Regimens in Severe Aplastic Anemia Patients

Clinical Trial Details — Status: Not yet recruiting

Administrative data

• NCT number: NCT03295058
• Other study ID #: OPALLSCT
• Status: Not yet recruiting
• Phase: Phase 2/Phase 3
• Start date: January 1, 2019
• Est. completion date: June 2020

Study information

• Verified date: November 2018
• Source: Assiut University
• Contact: Osama A Ibraheim, MD
• Phone: 00201006372498
• Email: oibrahiem[@]yahoo.com
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

Aplastic anemia is a syndrome of bone marrow failure characterized by peripheral pancytopenia and marrow hypoplasia.The theoretical basis for marrow failure includes primary defects in or damage to the stem cell or the marrow microenvironment

Description:

The distinction between acquired and inherited disease may present a clinical challenge, but more than 80% of cases are acquired.

Therapy for aplastic anemia may consist of supportive care only, immunosuppressive therapy, or hematopoietic cell transplantation. Severe and very severe aplastic anemia have a high mortality rate with supportive care alone .

The British Committee for Standards in Haematology recommends treating infection or uncontrolled bleeding before administering immunosuppressive therapy, including in patients scheduled for hematopoietic cell transplantation. The Pediatric Haemato-Oncology Italian Association recommends hematopoietic cell transplantation from a matched sibling donor for severe aplastic anemia, and if a matched donor is not available, options include immunosuppressive therapy or unrelated donor hematopoietic cell transplantation.

Human leukocyte antigen (HLA)-matched sibling-donor hematopoietic cell transplantation is the treatment of choice for a young patient with severe or very severe aplastic anemia , being generally accepted for patients younger than 40 years.

Recent years have seen increasing the use of hematopoietic cells other than bone marrow (BM). These alternative graft sources include peripheral blood progenitor cells and granulocyte colony stimulating factor (G-CSF) bone marrow (G-BM). Several groups have demonstrated that peripheral blood progenitor cell transplantation has faster neutrophil and platelet engraftment compared to BM in patients with hematologic malignancies ; however, most adult studies also report an increase in chronic GVHD (cGVHD) Some adult studies describe improved survival with peripheral blood progenitor cells in adult recipients although survival generally was no different in those with standard-risk disease .

Cyclophosphamide (Cy)/anti-thymocyte globulin (ATG) is considered the standard conditioning regimen for patients with severe aplastic anemia undergoing hematopoietic cell transplantation from a HLA matched sibling donor, The introduction of a fludarabine (F-araA) based reduced intensity conditioning regimen has extended the availability of hematopoietic cell transplantation to patients who are older, heavily transfused and having delayed treatment from the time of diagnosis with HLA matched related/unrelated donors.

The addition of F-araA to the conditioning regimen has been shown to provide additional immunosuppression for engraftment without increasing toxicity in patients undergoing hematopoietic cell transplantation .

Also, conditioning with F-araA and Cy is associated with improved long-term survival compared to a historical cohort receiving Cy/ATG regimen in patients with severe aplastic anemia undergoing hematopoietic cell transplantation .

Adequate post transplantation immunosuppression is important not only for the prevention of GVHD, but also to secure adequate suppression of the host immune system and prevention of graft rejection. The administration of CsA alone or with or without short-course methotrexate or steroid should be considered the standard post transplantation immunosuppression. In addition to possibility of use of other immunosuppressive agents, including the use of mycophenolate mofetil, particularly in patients with renal impairment.

Recruitment information / eligibility

• Status: Not yet recruiting
• Enrollment: 50
• Est. completion date: June 2020
• Est. primary completion date: December 1, 2019
• Accepts healthy volunteers: No
• Gender: All
• Age group: 16 Years to 50 Years

Eligibility

Inclusion Criteria:

• All patients with severe and very severe aplastic anemia for stem cell therapy.

Exclusion Criteria:

1- Contraindication to stem cell transplantation. 2 - Patients associated co-morbidities.

Related Conditions & MeSH terms

• Anemia
• Anemia, Aplastic
• Severe Aplastic Anemia

Intervention

Drug:
• Non ATG Conditioning regimen
50% of the patients will receive Fludarabine + cyclophosphamide (F-araA 120 mg/m2 total dose for 3 days (d-3,-2,-1) over 1 h infusion and cyclophosphamide 25 mg/kg/d (d-5 to d-2) for 4 days over 1-h infusion prior to hematopoietic cell transplantation , then post transplant cyclophosphamide dose 50 mg/kg on days +3 and +4
• GVHD Prophylaxis
Cyclosporine A (CsA 3 mg/kg) start day +5

Procedure:
• Allogenic Stem Cell Transplantation
using peripheral blood stem cells

Drug:
• ATG conditioning regimen
the other 50% of the patients will receive Cyclophosphamide + ATG

Locations

Country	Name	City	State
n/a

Sponsors (1)

Lead Sponsor	Collaborator
Assiut University

References & Publications (7)

Barone A, Lucarelli A, Onofrillo D, Verzegnassi F, Bonanomi S, Cesaro S, Fioredda F, Iori AP, Ladogana S, Locasciulli A, Longoni D, Lanciotti M, Macaluso A, Mandaglio R, Marra N, Martire B, Maruzzi M, Menna G, Notarangelo LD, Palazzi G, Pillon M, Ramenghi U, Russo G, Svahn J, Timeus F, Tucci F, Cugno C, Zecca M, Farruggia P, Dufour C, Saracco P; Marrow Failure Study Group of the Pediatric Haemato-Oncology Italian Association. Diagnosis and management of acquired aplastic anemia in childhood. Guidelines from the Marrow Failure Study Group of the Pediatric Haemato-Oncology Italian Association (AIEOP). Blood Cells Mol Dis. 2015 Jun;55(1):40-7. doi: 10.1016/j.bcmd.2015.03.007. Epub 2015 Mar 31. — View Citation

Couban S, Simpson DR, Barnett MJ, Bredeson C, Hubesch L, Howson-Jan K, Shore TB, Walker IR, Browett P, Messner HA, Panzarella T, Lipton JH; Canadian Bone Marrow Transplant Group. A randomized multicenter comparison of bone marrow and peripheral blood in recipients of matched sibling allogeneic transplants for myeloid malignancies. Blood. 2002 Sep 1;100(5):1525-31. — View Citation

George B, Mathews V, Viswabandya A, Abraham A, Ganapule A, Fouzia NA, Korula A, Lakshmi KN, Chandy M, Srivastava A. Immunosuppressive Therapy and Bone Marrow Transplantation for Aplastic Anaemia--The CMC Experience. J Assoc Physicians India. 2015 Mar;63(3 Suppl):36-40. — View Citation

Killick SB, Bown N, Cavenagh J, Dokal I, Foukaneli T, Hill A, Hillmen P, Ireland R, Kulasekararaj A, Mufti G, Snowden JA, Samarasinghe S, Wood A, Marsh JC; British Society for Standards in Haematology. Guidelines for the diagnosis and management of adult aplastic anaemia. Br J Haematol. 2016 Jan;172(2):187-207. doi: 10.1111/bjh.13853. Epub 2015 Nov 16. Erratum in: Br J Haematol. 2016 Nov;175(3):546. — View Citation

Socié G. Allogeneic BM transplantation for the treatment of aplastic anemia: current results and expanding donor possibilities. Hematology Am Soc Hematol Educ Program. 2013;2013:82-6. doi: 10.1182/asheducation-2013.1.82. Review. — View Citation

Watanabe T, Takaue Y, Kawano Y, Koike K, Kikuta A, Imaizumi M, Watanabe A, Eguchi H, Ohta S, Horikoshi Y, Iwai A, Makimoto A, Kuroda Y; Peripheral Blood Stem Cell Transplantation Study Group of Japan. HLA-identical sibling peripheral blood stem cell transplantation in children and adolescents. Biol Blood Marrow Transplant. 2002;8(1):26-31. — View Citation

Wu Y, Yu J, Zhang L, Luo Q, Xiao JW, Liu XM, Xian Y, Dai BT, Xu YH, Su YC. [Hematopoiesis support of mesenchymal stem cells in children with aplastic anemia]. Zhongguo Dang Dai Er Ke Za Zhi. 2008 Aug;10(4):455-9. Chinese. — View Citation

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Overall Survival rate		two years
Secondary	GVHD occurrence (Acute or Chronic), engraftment and transplant related mortality		two years
Secondary	Relapse rate		two years
Secondary	Progression free survival		two years