Režim kondicionování se sníženou intenzitou (RIC) pro pacienty s nemaligními poruchami (RIC)
This Phase II pilot study evaluates the safety and effectiveness of reduced-intensity conditioning (RIC) regimens prior to allogeneic hematopoietic stem cell transplantation (HSCT) in pediatric and young adult patients with non-malignant disorders, including immunodeficiencies and hemoglobinopathies. The study examines different conditioning approaches that vary in the timing and dosing of alemtuzumab (Campath), as well as disease-specific modifications for beta thalassemia major and infants. The primary objective is to assess donor engraftment and event-free survival at one year following transplant. The study aims to determine whether RIC regimens can reduce toxicity while maintaining successful engraftment and disease control.
Přehled studie
Postavení
Intervence / Léčba
Detailní popis
This Phase II, single-institution, investigator-initiated pilot study evaluates reduced-intensity conditioning (RIC) strategies in the setting of allogeneic hematopoietic stem cell transplantation (HSCT) for non-malignant disorders. The study focuses on optimizing conditioning approaches to balance adequate immunosuppression for donor engraftment with minimization of regimen-related toxicity.
RIC regimens are designed to reduce the organ toxicity and late effects associated with traditional myeloablative conditioning while maintaining sufficient host immune suppression to allow durable donor cell engraftment. This approach is particularly relevant in patients with pre-existing organ dysfunction or increased vulnerability to treatment-related complications. In non-malignant diseases, full donor chimerism may not be required for therapeutic benefit, and stable mixed chimerism may be sufficient for disease correction.
The conditioning strategies evaluated in this protocol primarily differ in the timing and administration of alemtuzumab, an anti-CD52 monoclonal antibody used to deplete host lymphocytes and reduce the risk of graft rejection and graft-versus-host disease. Earlier ("distal") administration is intended to reduce prolonged exposure at the time of stem cell infusion, thereby preserving donor immune function, while more proximal administration provides more immediate immunosuppression but may increase the risk of delayed immune recovery.
Disease-specific modifications to conditioning intensity are incorporated for select populations. Patients with beta thalassemia major receive additional cytoreductive and immunosuppressive agents to address the higher risk of graft rejection associated with intact immunity and expanded marrow space. Infants with immunodeficiencies are treated with modified regimens designed to reduce toxicity while maintaining engraftment potential.
Following conditioning, patients undergo stem cell transplantation using donor sources that may include related or unrelated donors as well as cord blood or alternative donor options based on clinical circumstances. Standard supportive care and post-transplant immunosuppression are administered according to institutional guidelines.
Patients are monitored longitudinally for engraftment, donor chimerism, immune recovery, and transplant-related complications. The study also evaluates clinical management strategies such as donor lymphocyte infusions or second transplantation in cases of declining chimerism or graft failure.
This study is intended to inform optimal conditioning approaches for patients with non-malignant disorders undergoing HSCT, with the goal of improving transplant tolerability while maintaining effective and durable engraftment.
Typ studie
Zápis (Aktuální)
Fáze
- Fáze 2
Kontakty a umístění
Studijní místa
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Pennsylvania
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Philadelphia, Pennsylvania, Spojené státy, 19104
- The Children's Hospital of Philadelphia
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Kritéria účasti
Kritéria způsobilosti
Věk způsobilý ke studiu
Přijímá zdravé dobrovolníky
Pohlaví způsobilá ke studiu
Popis
Inclusion Criteria:
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Age >6 months- 25 years
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Diseases eligible for Distal Alemtuzumab:
- Immunodysregulation polyendocrinopathy enteropathy X-linked (IPEX) syndrome
- Sickle cell disease (Neurologic: history of stroke or any neurologic defect lasting >24 hours accompanied by infarct on MRI; or abnormal transcranial Doppler, or abnormal MRI with cerebral vasculature stenosis. OR minimum 2 episodes of acute chest syndrome in preceding 2 year period OR history 3 or more severe pain events/year in the 2 years prior to transplant.)
- Thalassemia major
- Bone marrow failure, including Kostmann's, amegakaryocytic thrombocytopenia, Blackfan-Diamond syndrome
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Diseases eligible for Intermediate Alemtuzumab
- Hemophagocytic lymphohistiocytosis other macrophage activation syndromes, severe Langerhans histiocytosis
- Severe combined immune deficiency, adenosine deaminase deficiency, common variable immunodeficiency
- Wiskott-Aldrich syndrome
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Organ criteria:
- Cardiac: Echocardiogram shortening fraction >27%
- Pulmonary: for those with pulmonary function tests: DLCO/VA >40% If DLCO/VA is not reported this is considered inability to perform the test. In this case Pulse Ox and Respiratory Exam will be used as evaluation criteria.
- Renal: Serum creatinine <1.5 x upper limit of normal for age
- Hepatic:; ALT and AST <5 x upper limit of normal
- Infection: No active infections.
Exclusion criteria
- Uncontrolled bacterial, fungal or viral infections.
- Bare lymphocyte syndrome (MHC class II deficiency)
Studijní plán
Jak je studie koncipována?
Detaily designu
- Primární účel: Léčba
- Přidělení: N/A
- Intervenční model: Přiřazení jedné skupiny
- Maskování: Žádné (otevřený štítek)
Zbraně a zásahy
Skupina účastníků / Arm |
Intervence / Léčba |
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Experimentální: Reduced-Intensity Conditioning (RIC) HSCT
Participants receive reduced-intensity conditioning with alemtuzumab-, fludarabine-, and melphalan-based regimens, varying by timing of alemtuzumab (distal or intermediate). Regimens are based on established protocols used in non-malignant disorders. Alemtuzumab is administered prior to other agents to reduce risk of declining donor chimerism. Participants then undergo allogeneic stem cell transplantation with standard post-transplant care. |
A pre-transplant conditioning approach designed to provide sufficient immunosuppression to enable donor cell engraftment while minimizing regimen-related toxicity compared to myeloablative conditioning. Regimens are adapted based on patient age and underlying disease characteristics using the following agents: Campath, Fludarabine, Melphalan, Cyclosporine, Cellcept (MMF).
Ostatní jména:
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Co je měření studie?
Primární výstupní opatření
Měření výsledku |
Popis opatření |
Časové okno |
|---|---|---|
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Number of Participants With Engraftment
Časové okno: Post Transplant -100 days
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engraftment of patients with non-malignant disorders will be evaluated using a reduced-intensity conditioning regimen |
Post Transplant -100 days
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Sekundární výstupní opatření
Měření výsledku |
Popis opatření |
Časové okno |
|---|---|---|
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Event-free Survival
Časové okno: 1 year post transplant
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Event-free survival is defined as the time interval to either primary or late graft failure, disease recurrence, or death. |
1 year post transplant
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Spolupracovníci a vyšetřovatelé
Vyšetřovatelé
- Vrchní vyšetřovatel: Timothy J Olson, MD, Children's Hospital of Philadelphia
Publikace a užitečné odkazy
Obecné publikace
- Chakrabarti S, Mackinnon S, Chopra R, Kottaridis PD, Peggs K, O'Gorman P, Chakraverty R, Marshall T, Osman H, Mahendra P, Craddock C, Waldmann H, Hale G, Fegan CD, Yong K, Goldstone AH, Linch DC, Milligan DW. High incidence of cytomegalovirus infection after nonmyeloablative stem cell transplantation: potential role of Campath-1H in delaying immune reconstitution. Blood. 2002 Jun 15;99(12):4357-63. doi: 10.1182/blood.v99.12.4357.
- Marsh RA, Kim MO, Liu C, Bellman D, Hart L, Grimley M, Kumar A, Jodele S, Myers KC, Chandra S, Leemhuis T, Mehta PA, Bleesing JJ, Davies SM, Jordan MB, Filipovich AH. An intermediate alemtuzumab schedule reduces the incidence of mixed chimerism following reduced-intensity conditioning hematopoietic cell transplantation for hemophagocytic lymphohistiocytosis. Biol Blood Marrow Transplant. 2013 Nov;19(11):1625-31. doi: 10.1016/j.bbmt.2013.09.001. Epub 2013 Sep 10.
- Iannone R, Casella JF, Fuchs EJ, Chen AR, Jones RJ, Woolfrey A, Amylon M, Sullivan KM, Storb RF, Walters MC. Results of minimally toxic nonmyeloablative transplantation in patients with sickle cell anemia and beta-thalassemia. Biol Blood Marrow Transplant. 2003 Aug;9(8):519-28. doi: 10.1016/s1083-8791(03)00192-7.
- Chakraverty R, Peggs K, Chopra R, Milligan DW, Kottaridis PD, Verfuerth S, Geary J, Thuraisundaram D, Branson K, Chakrabarti S, Mahendra P, Craddock C, Parker A, Hunter A, Hale G, Waldmann H, Williams CD, Yong K, Linch DC, Goldstone AH, Mackinnon S. Limiting transplantation-related mortality following unrelated donor stem cell transplantation by using a nonmyeloablative conditioning regimen. Blood. 2002 Feb 1;99(3):1071-8. doi: 10.1182/blood.v99.3.1071.
- Angelucci E, Matthes-Martin S, Baronciani D, Bernaudin F, Bonanomi S, Cappellini MD, Dalle JH, Di Bartolomeo P, de Heredia CD, Dickerhoff R, Giardini C, Gluckman E, Hussein AA, Kamani N, Minkov M, Locatelli F, Rocha V, Sedlacek P, Smiers F, Thuret I, Yaniv I, Cavazzana M, Peters C; EBMT Inborn Error and EBMT Paediatric Working Parties. Hematopoietic stem cell transplantation in thalassemia major and sickle cell disease: indications and management recommendations from an international expert panel. Haematologica. 2014 May;99(5):811-20. doi: 10.3324/haematol.2013.099747.
- Cooper N, Rao K, Gilmour K, Hadad L, Adams S, Cale C, Davies G, Webb D, Veys P, Amrolia P. Stem cell transplantation with reduced-intensity conditioning for hemophagocytic lymphohistiocytosis. Blood. 2006 Feb 1;107(3):1233-6. doi: 10.1182/blood-2005-05-1819. Epub 2005 Oct 11.
- King AA, Kamani N, Bunin N, Sahdev I, Brochstein J, Hayashi RJ, Grimley M, Abraham A, Dioguardi J, Chan KW, Douglas D, Adams R, Andreansky M, Anderson E, Gilman A, Chaudhury S, Yu L, Dalal J, Hale G, Cuvelier G, Jain A, Krajewski J, Gillio A, Kasow KA, Delgado D, Hanson E, Murray L, Shenoy S. Successful matched sibling donor marrow transplantation following reduced intensity conditioning in children with hemoglobinopathies. Am J Hematol. 2015 Dec;90(12):1093-8. doi: 10.1002/ajh.24183. Epub 2015 Oct 6.
- Wildin RS, Smyk-Pearson S, Filipovich AH. Clinical and molecular features of the immunodysregulation, polyendocrinopathy, enteropathy, X linked (IPEX) syndrome. J Med Genet. 2002 Aug;39(8):537-45. doi: 10.1136/jmg.39.8.537.
- Rao A, Kamani N, Filipovich A, Lee SM, Davies SM, Dalal J, Shenoy S. Successful bone marrow transplantation for IPEX syndrome after reduced-intensity conditioning. Blood. 2007 Jan 1;109(1):383-5. doi: 10.1182/blood-2006-05-025072. Epub 2006 Sep 21.
- Del Toro G, Satwani P, Harrison L, Cheung YK, Brigid Bradley M, George D, Yamashiro DJ, Garvin J, Skerrett D, Bessmertny O, Wolownik K, Wischhover C, van de Ven C, Cairo MS. A pilot study of reduced intensity conditioning and allogeneic stem cell transplantation from unrelated cord blood and matched family donors in children and adolescent recipients. Bone Marrow Transplant. 2004 Mar;33(6):613-22. doi: 10.1038/sj.bmt.1704399.
- Kean LS, Durham MM, Adams AB, Hsu LL, Perry JR, Dillehay D, Pearson TC, Waller EK, Larsen CP, Archer DR. A cure for murine sickle cell disease through stable mixed chimerism and tolerance induction after nonmyeloablative conditioning and major histocompatibility complex-mismatched bone marrow transplantation. Blood. 2002 Mar 1;99(5):1840-9. doi: 10.1182/blood.v99.5.1840.
- Fischer A, Landais P, Friedrich W, Morgan G, Gerritsen B, Fasth A, Porta F, Griscelli C, Goldman SF, Levinsky R, et al. European experience of bone-marrow transplantation for severe combined immunodeficiency. Lancet. 1990 Oct 6;336(8719):850-4. doi: 10.1016/0140-6736(90)92348-l.
- Friedrich W, Goldmann SF, Vetter U, Fliedner TM, Heymer B, Peter HH, Reisner Y, Kleihauer E. Immunoreconstitution in severe combined immunodeficiency after transplantation of HLA-haploidentical, T-cell-depleted bone marrow. Lancet. 1984 Apr 7;1(8380):761-4. doi: 10.1016/s0140-6736(84)91277-7.
- Klangsinsirikul P, Carter GI, Byrne JL, Hale G, Russell NH. Campath-1G causes rapid depletion of circulating host dendritic cells (DCs) before allogeneic transplantation but does not delay donor DC reconstitution. Blood. 2002 Apr 1;99(7):2586-91. doi: 10.1182/blood.v99.7.2586.
- Morris EC, Rebello P, Thomson KJ, Peggs KS, Kyriakou C, Goldstone AH, Mackinnon S, Hale G. Pharmacokinetics of alemtuzumab used for in vivo and in vitro T-cell depletion in allogeneic transplantations: relevance for early adoptive immunotherapy and infectious complications. Blood. 2003 Jul 1;102(1):404-6. doi: 10.1182/blood-2002-09-2687. Epub 2003 Mar 6.
- Chakrabarti S, Avivi I, Mackinnon S, Ward K, Kottaridis PD, Osman H, Waldmann H, Hale G, Fegan CD, Yong K, Goldstone AH, Linch DC, Milligan DW. Respiratory virus infections in transplant recipients after reduced-intensity conditioning with Campath-1H: high incidence but low mortality. Br J Haematol. 2002 Dec;119(4):1125-32. doi: 10.1046/j.1365-2141.2002.03992.x.
- Shah AJ, Kapoor N, Crooks GM, Weinberg KI, Azim HA, Killen R, Kuo L, Rushing T, Kohn DB, Parkman R. The effects of Campath 1H upon graft-versus-host disease, infection, relapse, and immune reconstitution in recipients of pediatric unrelated transplants. Biol Blood Marrow Transplant. 2007 May;13(5):584-93. doi: 10.1016/j.bbmt.2007.01.076. Epub 2007 Mar 23.
- Shenoy S, Grossman WJ, DiPersio J, Yu LC, Wilson D, Barnes YJ, Mohanakumar T, Rao A, Hayashi RJ. A novel reduced-intensity stem cell transplant regimen for nonmalignant disorders. Bone Marrow Transplant. 2005 Feb;35(4):345-52. doi: 10.1038/sj.bmt.1704795.
- Jacobsohn DA, Duerst R, Tse W, Kletzel M. Reduced intensity haemopoietic stem-cell transplantation for treatment of non-malignant diseases in children. Lancet. 2004 Jul 10-16;364(9429):156-62. doi: 10.1016/S0140-6736(04)16628-2.
- Horn B, Baxter-Lowe LA, Englert L, McMillan A, Quinn M, Desantes K, Cowan M. Reduced intensity conditioning using intravenous busulfan, fludarabine and rabbit ATG for children with nonmalignant disorders and CML. Bone Marrow Transplant. 2006 Feb;37(3):263-9. doi: 10.1038/sj.bmt.1705240.
- Amrolia P, Gaspar HB, Hassan A, Webb D, Jones A, Sturt N, Mieli-Vergani G, Pagliuca A, Mufti G, Hadzic N, Davies G, Veys P. Nonmyeloablative stem cell transplantation for congenital immunodeficiencies. Blood. 2000 Aug 15;96(4):1239-46.
- Rao K, Amrolia PJ, Jones A, Cale CM, Naik P, King D, Davies GE, Gaspar HB, Veys PA. Improved survival after unrelated donor bone marrow transplantation in children with primary immunodeficiency using a reduced-intensity conditioning regimen. Blood. 2005 Jan 15;105(2):879-85. doi: 10.1182/blood-2004-03-0960. Epub 2004 Sep 14.
- Kikuta A, Ito M, Mochizuki K, Akaihata M, Nemoto K, Sano H, Ohto H. Nonmyeloablative stem cell transplantation for nonmalignant diseases in children with severe organ dysfunction. Bone Marrow Transplant. 2006 Nov;38(10):665-9. doi: 10.1038/sj.bmt.1705511. Epub 2006 Oct 2.
- Bhatla D, Davies SM, Shenoy S, Harris RE, Crockett M, Shoultz L, Smolarek T, Bleesing J, Hansen M, Jodele S, Jordan M, Filipovich AH, Mehta PA. Reduced-intensity conditioning is effective and safe for transplantation of patients with Shwachman-Diamond syndrome. Bone Marrow Transplant. 2008 Aug;42(3):159-65. doi: 10.1038/bmt.2008.151. Epub 2008 May 26.
- Parikh SH, Mendizabal A, Benjamin CL, Komanduri KV, Antony J, Petrovic A, Hale G, Driscoll TA, Martin PL, Page KM, Flickinger K, Moffet J, Niedzwiecki D, Kurtzberg J, Szabolcs P. A novel reduced-intensity conditioning regimen for unrelated umbilical cord blood transplantation in children with nonmalignant diseases. Biol Blood Marrow Transplant. 2014 Mar;20(3):326-36. doi: 10.1016/j.bbmt.2013.11.021. Epub 2013 Dec 1.
- King A, Shenoy S. Evidence-based focused review of the status of hematopoietic stem cell transplantation as treatment of sickle cell disease and thalassemia. Blood. 2014 May 15;123(20):3089-94; quiz 3210. doi: 10.1182/blood-2013-01-435776. Epub 2014 Feb 7. No abstract available.
- Oshrine BR, Olson TS, Bunin N. Mixed chimerism and graft loss in pediatric recipients of an alemtuzumab-based reduced-intensity conditioning regimen for non-malignant disease. Pediatr Blood Cancer. 2014 Oct;61(10):1852-9. doi: 10.1002/pbc.25113. Epub 2014 Jun 17.
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Další relevantní podmínky MeSH
Další identifikační čísla studie
- 08-005658
- CHP 894 (Jiný identifikátor: Children's Hospital of Philadelphia)
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