Allogeneic Stem Cell Transplantation in CML With Partial T Cell Depletion

Allogeneic stem cell transplantation, the only known curative modality for CML, was abandoned in recent years for a very effective and much less toxic targeted therapy with the tyrosine kinase inhibitors (TKIs). However, approximately one third of patients still need another treatment including stem cell transplantation. The study protocol comprised a cohort of consecutive patients with CML who received allogeneic stem cell transplantation using partial T cell depletion, with no post-transplant GvHD prophylaxis. Forty consecutive patients with CML underwent allogeneic stem cell transplantation from a matched sibling using partial T cell depletion (TCD), in a single institution. Escalated dose of donor lymphocyte infusion (DLI) was given in case of either relapse or presence of minimal residual disease (MRD) as detected by cytogenetic or molecular analysis. The purpose of the study is to decrease transplant-related toxicity.

Sex

All

Minimum age

18 Years

Maximum age

65 Years

Inclusion Criteria:

* Diagnosis of chronic phase CML by hematological, cytogenetic and molecular studies.
* Age \>18
* Candidates for allogeneic stem cell transplantation
* Available matched related donor

Exclusion Criteria:

* Age\< 18 years
* Other malignancy
* Decreased cardiac function (by echo), reduced pulmonary function (decreased DLCO, FEV1), abnormal kidney function (creatinine \> 1.5 N), abnormal liver function (AST, ALT \>2N)

• BACKGROUNDO'Brien SG, Guilhot F, Larson RA, Gathmann I, Baccarani M, Cervantes F, Cornelissen JJ, Fischer T, Hochhaus A, Hughes T, Lechner K, Nielsen JL, Rousselot P, Reiffers J, Saglio G, Shepherd J, Simonsson B, Gratwohl A, Goldman JM, Kantarjian H, Taylor K, Verhoef G, Bolton AE, Capdeville R, Druker BJ; IRIS Investigators. Imatinib compared with interferon and low-dose cytarabine for newly diagnosed chronic-phase chronic myeloid leukemia. N Engl J Med. 2003 Mar 13;348(11):994-1004. doi: 10.1056/NEJMoa022457. PMID 12637609
• BACKGROUNDHughes TP, Kaeda J, Branford S, Rudzki Z, Hochhaus A, Hensley ML, Gathmann I, Bolton AE, van Hoomissen IC, Goldman JM, Radich JP; International Randomised Study of Interferon versus STI571 (IRIS) Study Group. Frequency of major molecular responses to imatinib or interferon alfa plus cytarabine in newly diagnosed chronic myeloid leukemia. N Engl J Med. 2003 Oct 9;349(15):1423-32. doi: 10.1056/NEJMoa030513. PMID 14534335
• BACKGROUNDDruker BJ, Guilhot F, O'Brien SG, Gathmann I, Kantarjian H, Gattermann N, Deininger MW, Silver RT, Goldman JM, Stone RM, Cervantes F, Hochhaus A, Powell BL, Gabrilove JL, Rousselot P, Reiffers J, Cornelissen JJ, Hughes T, Agis H, Fischer T, Verhoef G, Shepherd J, Saglio G, Gratwohl A, Nielsen JL, Radich JP, Simonsson B, Taylor K, Baccarani M, So C, Letvak L, Larson RA; IRIS Investigators. Five-year follow-up of patients receiving imatinib for chronic myeloid leukemia. N Engl J Med. 2006 Dec 7;355(23):2408-17. doi: 10.1056/NEJMoa062867. PMID 17151364
• BACKGROUNDJabbour E, Cortes JE, Kantarjian HM. Molecular monitoring in chronic myeloid leukemia: response to tyrosine kinase inhibitors and prognostic implications. Cancer. 2008 May 15;112(10):2112-8. doi: 10.1002/cncr.23427. PMID 18348294
• BACKGROUNDde Lavallade H, Apperley JF, Khorashad JS, Milojkovic D, Reid AG, Bua M, Szydlo R, Olavarria E, Kaeda J, Goldman JM, Marin D. Imatinib for newly diagnosed patients with chronic myeloid leukemia: incidence of sustained responses in an intention-to-treat analysis. J Clin Oncol. 2008 Jul 10;26(20):3358-63. doi: 10.1200/JCO.2007.15.8154. Epub 2008 Jun 2.