Incidence of TEL/AML1 Fusion in Children With Relapsed Acute Lymphoblastic Leukemia

Blood ◽  
1998 ◽  
Vol 92 (12) ◽  
pp. 4792-4797 ◽  
Author(s):  
Mignon L. Loh ◽  
Lewis B. Silverman ◽  
Mary L. Young ◽  
Donna Neuberg ◽  
Todd R. Golub ◽  
...  
Keyword(s):  
Acute Lymphoblastic Leukemia ◽  
Childhood Leukemia ◽  
Pediatric Patients ◽  
Lymphoblastic Leukemia ◽  
Low Frequency ◽  
Disease Free Survival ◽  
Prognostic Indicator ◽  
Relapse Free Survival ◽  
Free Survival ◽  
Dana Farber Cancer Institute

The TEL/AML1 fusion associated with t(12;21)(p13;q22) is the most common gene rearrangement in childhood leukemia, occurring in approximately 25% of pediatric acute lymphoblastic leukemia (ALL), and is associated with a favorable prognosis. For example, a cohort of pediatric patients with ALL retrospectively analyzed for theTEL/AML1 fusion treated on Dana-Farber Cancer Institute (DFCI) ALL Consortium protocols between 1980 to 1991 demonstrated a 100% relapse-free survival in TEL/AML1-positive patients with a median of 8.3 years of follow-up. However, two recent studies analyzing pediatric patients with relapsed ALL have reported the same incidence of the TEL/AML1 rearrangement as in patients with newly diagnosed ALL, suggesting that TEL/AML1 positivity is not a favorable prognostic indicator. To clarify this apparent discrepancy, 48 pediatric patients treated on Dana-Farber Cancer Institute (DFCI) protocols with ALL at first or second relapse were tested forTEL/AML1 using reverse transcriptase-polymerase chain reaction (RT-PCR). The TEL/AML1 fusion was identified in only 1 of 32 analyzable relapsed ALL patients, in concordance with our previous reports of improved disease-free survival in TEL/AML1-positive patients. The low frequency of TEL/AML1-positive patients at relapse is significantly different than that reported in other studies. Although there are several potential explanations for the observed differences in TEL/AML1-positive patients at relapse, it is plausible that relapse-free survival in TEL/AML1-positive patients may be changed with different therapeutic approaches. Taken together, these results support the need for prospective analysis of prognosis in TEL/AML1-positive patients.

Incidence of TEL/AML1 Fusion in Children With Relapsed Acute Lymphoblastic Leukemia

Blood ◽  
1998 ◽  
Vol 92 (12) ◽  
pp. 4792-4797 ◽  
Author(s):  
Mignon L. Loh ◽  
Lewis B. Silverman ◽  
Mary L. Young ◽  
Donna Neuberg ◽  
Todd R. Golub ◽  
...  
Keyword(s):  
Acute Lymphoblastic Leukemia ◽  
Childhood Leukemia ◽  
Pediatric Patients ◽  
Lymphoblastic Leukemia ◽  
Low Frequency ◽  
Disease Free Survival ◽  
Prognostic Indicator ◽  
Relapse Free Survival ◽  
Free Survival ◽  
Dana Farber Cancer Institute

Abstract The TEL/AML1 fusion associated with t(12;21)(p13;q22) is the most common gene rearrangement in childhood leukemia, occurring in approximately 25% of pediatric acute lymphoblastic leukemia (ALL), and is associated with a favorable prognosis. For example, a cohort of pediatric patients with ALL retrospectively analyzed for theTEL/AML1 fusion treated on Dana-Farber Cancer Institute (DFCI) ALL Consortium protocols between 1980 to 1991 demonstrated a 100% relapse-free survival in TEL/AML1-positive patients with a median of 8.3 years of follow-up. However, two recent studies analyzing pediatric patients with relapsed ALL have reported the same incidence of the TEL/AML1 rearrangement as in patients with newly diagnosed ALL, suggesting that TEL/AML1 positivity is not a favorable prognostic indicator. To clarify this apparent discrepancy, 48 pediatric patients treated on Dana-Farber Cancer Institute (DFCI) protocols with ALL at first or second relapse were tested forTEL/AML1 using reverse transcriptase-polymerase chain reaction (RT-PCR). The TEL/AML1 fusion was identified in only 1 of 32 analyzable relapsed ALL patients, in concordance with our previous reports of improved disease-free survival in TEL/AML1-positive patients. The low frequency of TEL/AML1-positive patients at relapse is significantly different than that reported in other studies. Although there are several potential explanations for the observed differences in TEL/AML1-positive patients at relapse, it is plausible that relapse-free survival in TEL/AML1-positive patients may be changed with different therapeutic approaches. Taken together, these results support the need for prospective analysis of prognosis in TEL/AML1-positive patients.

Complications of Leukemia

1991 ◽  
Vol 12 (10) ◽  
pp. 313-318
Author(s):  
Stacey L. Berg ◽  
David G. Poplack
Keyword(s):  
Acute Lymphoblastic Leukemia ◽  
Childhood Leukemia ◽  
Lymphoblastic Leukemia ◽  
Disease Free Survival ◽  
The United States ◽  
Infectious Complications ◽  
Optimal Care ◽  
Free Survival ◽  
Long Term Survivors

Approximately 2000 children, or 4 per 100 000 younger than 15 years of age, are diagnosed as having leukemia in the United States every year. Three quarters of these children have acute lymphoblastic leukemia; the remainder have acute nonlymphocytic or chronic leukemia. Before the development of modern chemotherapy, virtually all children having any kind of leukemia died within a few months of diagnosis. With the effective forms of therapy now available, however, long-term disease-free survival for children who have acute lymphoblastic leukemia has improved to approximately 60% to 70%. As a result, pediatricians are seeing more children in their practices who either are undergoing antileukemic therapy or are long-term survivors of the disease. To provide optimal care for these children, the pediatrician not only must be familiar with the pathophysiology and treatment of childhood leukemia, but also must be aware of those complications that may occur during and after therapy. This review focuses on common complications of childhood leukemia, particularly those associated with acute lymphoblastic leukemia. INFECTION Because children who have acute leukemia are immunocompromised due to both the disease and its treatment, they are at high risk for infection. The pediatrician caring for these children must be aware of common infectious complications and their management.

scholarly journals Treatment of adult acute lymphoblastic leukemia with intensive cyclical chemotherapy: a follow-up report

Blood ◽  
1991 ◽  
Vol 78 (11) ◽  
pp. 2814-2822 ◽  
Author(s):  
CA Linker ◽  
LJ Levitt ◽  
M O'Donnell ◽  
SJ Forman ◽  
CA Ries
Keyword(s):  
Acute Lymphoblastic Leukemia ◽  
Lymphoblastic Leukemia ◽  
Disease Free Survival ◽  
Remission Induction ◽  
Cell Phenotype ◽  
Free Survival ◽  
Prognostic Features ◽  
Adult Acute Lymphoblastic Leukemia ◽  
Disease Free

Abstract We treated 109 patients with adult acute lymphoblastic leukemia (ALL) diagnosed by histochemical and immunologic techniques. Patients were excluded only for age greater than 50 years and Burkitt's leukemia. Treatment included a four-drug remission induction phase followed by alternating cycles of noncrossresistant chemotherapy and prolonged oral maintenance therapy. Eighty-eight percent of patients entered complete remission. With a median follow-up of 77 months (range, 48 to 111 months), 42% +/- 6% (SEM) of patients achieving remission are projected to remain disease-free at 5 years, and disease-free survival for all patients entered on study is 35% +/- 5%. Failure to achieve remission within the first 4 weeks of therapy and the presence of the Philadelphia chromosome are associated with a 100% risk of relapse. Remission patients with neither of these adverse features have a 48% +/- 6% probability of remaining in continuous remission for 5 years. Patients with T-cell phenotype have a favorable prognosis with 59% +/- 13% of patients achieving remission remaining disease-free compared with 31% +/- 7% of CALLA-positive patients. Intensive chemotherapy may produce prolonged disease-free survival in a sizable fraction of adults with ALL. Improved therapy is needed, especially for patients with adverse prognostic features.

scholarly journals GRFS and CRFS in alternative donor hematopoietic cell transplantation for pediatric patients with acute leukemia

2019 ◽  
Vol 3 (9) ◽  
pp. 1441-1449 ◽  
Author(s):  
Rohtesh S. Mehta ◽  
Shernan G. Holtan ◽  
Tao Wang ◽  
Michael T. Hemmer ◽  
Stephen R. Spellman ◽  
...  
Keyword(s):  
Multivariate Analysis ◽  
Acute Leukemia ◽  
Pediatric Patients ◽  
Hematopoietic Cell Transplantation ◽  
Lymphoblastic Leukemia ◽  
Chronic Gvhd ◽  
Cox Proportional Hazards ◽  
Relapse Free Survival ◽  
Free Survival ◽  
Grade Iii

Abstract We report graft-versus-host disease (GVHD)-free relapse-free survival (GRFS) (a composite end point of survival without grade III-IV acute GVHD [aGVHD], systemic therapy–requiring chronic GVHD [cGVHD], or relapse) and cGVHD-free relapse-free survival (CRFS) among pediatric patients with acute leukemia (n = 1613) who underwent transplantation with 1 antigen–mismatched (7/8) bone marrow (BM; n = 172) or umbilical cord blood (UCB; n = 1441). Multivariate analysis was performed using Cox proportional hazards models. To account for multiple testing, P < .01 for the donor/graft variable was considered statistically significant. Clinical characteristics were similar between UCB and 7/8 BM recipients, because most had acute lymphoblastic leukemia (62%), 64% received total body irradiation–based conditioning, and 60% received anti-thymocyte globulin or alemtuzumab. Methotrexate-based GVHD prophylaxis was more common with 7/8 BM (79%) than with UCB (15%), in which mycophenolate mofetil was commonly used. The univariate estimates of GRFS and CRFS were 22% (95% confidence interval [CI], 16-29) and 27% (95% CI, 20-34), respectively, with 7/8 BM and 33% (95% CI, 31-36) and 38% (95% CI, 35-40), respectively, with UCB (P < .001). In multivariate analysis, 7/8 BM vs UCB had similar GRFS (hazard ratio [HR], 1.12; 95% CI, 0.87-1.45; P = .39), CRFS (HR, 1.06; 95% CI, 0.82-1.38; P = .66), overall survival (HR, 1.07; 95% CI, 0.80-1.44; P = .66), and relapse (HR, 1.44; 95% CI, 1.03-2.02; P = .03). However, the 7/8 BM group had a significantly higher risk for grade III-IV aGVHD (HR, 1.70; 95% CI, 1.16-2.48; P = .006) compared with the UCB group. UCB and 7/8 BM groups had similar outcomes, as measured by GRFS and CRFS. However, given the higher risk for grade III-IV aGVHD, UCB might be preferred for patients lacking matched donors.

Allogeneic bone marrow transplantation for children with acute lymphoblastic leukemia in first remission: a cooperative study of the Groupe d'Etude de la Greffe de Moelle Osseuse.

1989 ◽  
Vol 7 (6) ◽  
pp. 747-753 ◽  
Author(s):  
P Bordigoni ◽  
J P Vernant ◽  
G Souillet ◽  
E Gluckman ◽  
D Marininchi ◽  
...  
Keyword(s):  
Bone Marrow ◽  
Acute Lymphoblastic Leukemia ◽  
Bone Marrow Transplantation ◽  
Lymphoblastic Leukemia ◽  
Allogeneic Bone Marrow Transplantation ◽  
Disease Free Survival ◽  
Allogeneic Bone ◽  
Free Survival ◽  
Disease Free

Thirty-two children ranging in age from 1.5 to 16 years with poor-prognosis acute lymphoblastic leukemia (ALL) were treated with myeloablative immunosuppressive therapy consisting of cyclophosphamide (CPM) and total body irradiation (TBI) followed by allogeneic bone marrow transplantation (BMT) while in first complete remission (CR). The main reasons for assignment to BMT were WBC count greater than 100,000/microL, structural chromosomal abnormalities, and resistance to initial induction therapy. All children were transplanted with marrow from histocompatible siblings. Twenty-seven patients are alive in first CR for 7 to 82 months post-transplantation (median, 30 months). The actuarial disease-free survival rate is 84.4% (confidence interval, 7.2% to 29%) and the actuarial relapse rate is 3.5% (confidence interval, 0.9% to 13%). Four patients died of transplant-related complications, 16 developed low-grade acute graft-v-host disease (GVHD), and six developed chronic GVHD. The very low incidence of relapse (one of 28 long-term survivors) precluded the determination of the prognostic significance of the different poor-outcome features. Moreover, two infants treated with busulfan, CPM, and cytarabine (Ara-C) relapsed promptly in the marrow. In summary, as a means of providing long-term disease-free survival and possible cure, BMT should be considered for children with ALL presenting poor-prognostic features, particularly certain chromosomal translocations [t(4;11), t(9;22)], very high WBC counts, notably if associated with a non-T immunophenotype, and, perhaps, a poor response to initial therapy with corticosteroids (CS), or infants less than 6 months of age.

scholarly journals Outcome of Infants Younger Than 1 Year With Acute Lymphoblastic Leukemia Treated With the Interfant-06 Protocol: Results From an International Phase III Randomized Study

2019 ◽  
Vol 37 (25) ◽  
pp. 2246-2256 ◽  
Author(s):  
Rob Pieters ◽  
Paola De Lorenzo ◽  
Philip Ancliffe ◽  
Luis Alberto Aversa ◽  
Benoit Brethon ◽  
...  
Keyword(s):  
Overall Survival ◽  
Acute Lymphoblastic Leukemia ◽  
Lymphoblastic Leukemia ◽  
Randomized Study ◽  
Disease Free Survival ◽  
Risk Groups ◽  
Study Groups ◽  
Phase Iii ◽  
Free Survival ◽  
Wbc Count

PURPOSE Infant acute lymphoblastic leukemia (ALL) is characterized by KMT2A ( MLL) gene rearrangements and coexpression of myeloid markers. The Interfant-06 study, comprising 18 national and international study groups, tested whether myeloid-style consolidation chemotherapy is superior to lymphoid style, the role of stem-cell transplantation (SCT), and which factors had independent prognostic value. MATERIALS AND METHODS Three risk groups were defined: low risk (LR): KMT2A germline; high risk (HR): KMT2A-rearranged and older than 6 months with WBC count 300 × 109/L or more or a poor prednisone response; and medium risk (MR): all other KMT2A-rearranged cases. Patients in the MR and HR groups were randomly assigned to receive the lymphoid course low-dose cytosine arabinoside [araC], 6-mercaptopurine, cyclophosphamide (IB) or experimental myeloid courses, namely araC, daunorubicin, etoposide (ADE) and mitoxantrone, araC, etoposide (MAE). RESULTS A total of 651 infants were included, with 6-year event-free survival (EFS) and overall survival of 46.1% (SE, 2.1) and 58.2% (SE, 2.0). In West European/North American groups, 6-year EFS and overall survival were 49.4% (SE, 2.5) and 62.1% (SE, 2.4), which were 10% to 12% higher than in other countries. The 6-year probability of disease-free survival was comparable for the randomized arms (ADE+MAE 39.3% [SE 4.0; n = 169] v IB 36.8% [SE, 3.9; n = 161]; log-rank P = .47). The 6-year EFS rate of patients in the HR group was 20.9% (SE, 3.4) with the intention to undergo SCT; only 46% of them received SCT, because many had early events. KMT2A rearrangement was the strongest prognostic factor for EFS, followed by age, WBC count, and prednisone response. CONCLUSION Early intensification with postinduction myeloid-type chemotherapy courses did not significantly improve outcome for infant ALL compared with the lymphoid-type course IB. Outcome for infant ALL in Interfant-06 did not improve compared with that in Interfant-99.

Allogeneic bone marrow transplantation for acute lymphoblastic leukemia in remission: prolonged survival associated with acute graft-versus-host disease.

1987 ◽  
Vol 5 (9) ◽  
pp. 1348-1355 ◽  
Author(s):  
D J Weisdorf ◽  
M E Nesbit ◽  
N K Ramsay ◽  
W G Woods ◽  
A I Goldman ◽  
...  
Keyword(s):  
Bone Marrow ◽  
Acute Lymphoblastic Leukemia ◽  
Bone Marrow Transplantation ◽  
High Risk ◽  
Marrow Transplantation ◽  
Lymphoblastic Leukemia ◽  
Maintenance Chemotherapy ◽  
Relapse Free Survival ◽  
Free Survival ◽  
Acute Graft

Forty remission patients with high-risk acute lymphoblastic leukemia (ALL) underwent matched allogenic bone marrow transplantation (BMT) following preparation with cyclophosphamide and fractionated total body irradiation (TBI). As of March 1987, the median follow-up is more than 3 1/2 years. Thirteen patients are alive (11 relapse free) between 2 and 4 1/2 years post-BMT. Neither age, sex, remission number, prior extramedullary leukemia, nor WBC at diagnosis of ALL was statistically significant as a predictor of relapse-free survival. The development of acute graft-v-host disease (GVHD) in 17 patients was found, with time-dependent Cox regression analysis, to be associated with a significant reduction in post-BMT relapse risk (P = .04) and improved disease-free survival (P = .11). A prospective, randomized trial of maintenance chemotherapy with oral methotrexate and mercaptopurine did not demonstrate improvement in relapse risk or survival for those assigned maintenance chemotherapy (P = .7). These results suggest that allogeneic BMT can result in extended relapse-free survival for some patients with high-risk ALL. More effective preparative chemoradiotherapy and exploitation of the apparent graft-v-leukemia effect may be useful in future trials.

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