The Importance of Pharmacogenomic Variations in the Treatment of Children with Acute Lymphoblastic Leukemia

Blood ◽  
2008 ◽  
Vol 112 (11) ◽  
pp. 4847-4847
Author(s):  
Chung-Yi Hu ◽  
Sheng-Kai Chang ◽  
Yung-Li Yang ◽  
Shu-Wha Lin ◽  
Rong-Jing Chiu ◽  
...  
Keyword(s):  
Acute Lymphoblastic Leukemia ◽  
High Risk ◽  
Standard Error ◽  
Poor Prognosis ◽  
Lymphoblastic Leukemia ◽  
Treatment Protocol ◽  
Event Free Survival ◽  
Free Survival ◽  
Kaplan Meier

Abstract In adaptation of risk-directed combined chemotherapies, the initial remission rate in treatment of childhood acute lymphoblastic leukemia (ALL) has exceeded 95%. Hematological relapse during maintenance therapy, in which methotrexate (MTX) and thiopurine are applied, is the major cause of treatment failure. A retrospective study was performed to evaluate the role of pharmacogenomic effects in the treatment of children with ALL in the southern Chinese population. A total of 105 Taiwanese children with ALL, who received combined chemotherapy of different intensities based on risk-directed Taiwan Pediatric Oncology Group (TPOG)-ALL-93 protocols between Oct. 1993 to Dec. 2001, were recorded in long-term follow-up (6.5 to 13.7 years) for events (hematological relapse or death) occurrence (Figure 1). Seventeen genetic polymorphisms in 13 pharmacogenomic targets that implicated in MTX/thiopurine metabolism were analyzed by PCR-based restriction length polymorphism (RFLP) or sequence-specific oligonucleotide (SSO) probe hybridization. Pharmacogenomic polymorphisms were correlated with long-term event-free survival (EFS) of patients, with confounding effects adjusted by multivariate regression. Homozygosity of the 2677–3435 G-C allele in the multi-drug resistance gene (MDR-1, ABCB1) was highly associated with a significant reduction in long-term EFS in those patients treated with the standard risk protocol (TPOG-ALL-93-SR) (Figure 2). In the 36 patients receiving TPOG-ALL-93-SR treatment protocol, 6 out of 12 (50%) subjects carried homozygotic MDR1 2677–3435 G-C/G-C genotype suffered hematological relapse in 2 years, compared to 21 of 24 (88%) the non-homozygotic subjects remained event-free after 5 years (hazard ratio: 6.8, p=0.01). Among patients treated with the a high risk protocol (TPOG-ALL-93-HR) due to the presence of myeloid markers on the leukemic cells or manifested central nervous system leukemia, the thymidylate synthase (TYMS) enhancer 28-bp repeats 3R3R, and the glutathione-S-transferase M1 (GSTM1) null genotypes were associated with inferior clinical outcomes (p=0.029 and 0.058, respectively). Moreover, for patients with T-cell ALL that received the very high risk protocol (TPOG-ALL-97-VHR), the methionine synthase reductase (MTRR) 66AA genotype correlated with a superior prognosis compared to the AG or GG genotypes. These findings indicated independent pharmacogenomic determinants could be identified in subsets of Taiwanese children with ALL and correlated to the treatment outcome. In conclusion, we propose the pharmacogenomic determinants disclosed in the context of TPOG-ALL-93 protocols could be used to refine protocols for the treatment of pediatric ALL patients. Fig. 1 Kaplan-Meier plot depicting event-free survival of the ALL patients. The estimate of five-year event-free-survival (and the standard error) is illustrated for 105 patients received TPOG-ALL-93 protocols. Fig. 1. Kaplan-Meier plot depicting event-free survival of the ALL patients. The estimate of five-year event-free-survival (and the standard error) is illustrated for 105 patients received TPOG-ALL-93 protocols. Fig. 2 MDR1 2677–3435 G-C/G-C genotype identified a subset with poor prognosis in the 36 ALL patients received TPOG-ALL-93-SR treatment protocol. Fig. 2. MDR1 2677–3435 G-C/G-C genotype identified a subset with poor prognosis in the 36 ALL patients received TPOG-ALL-93-SR treatment protocol.

scholarly journals CD2 antigen expression on leukemic cells as a predictor of event-free survival after chemotherapy for T-lineage acute lymphoblastic leukemia: a Children's Cancer Group study

Blood ◽  
1996 ◽  
Vol 88 (11) ◽  
pp. 4288-4295 ◽  
Author(s):  
FM Uckun ◽  
PG Steinherz ◽  
H Sather ◽  
M Trigg ◽  
D Arthur ◽  
...  
Keyword(s):  
Bone Marrow ◽  
Acute Lymphoblastic Leukemia ◽  
High Risk ◽  
Lymphoblastic Leukemia ◽  
Antigen Expression ◽  
Leukemic Cells ◽  
Event Free Survival ◽  
Free Survival ◽  
Cancer Group ◽  
Standard Risk

Abstract We examined the prognostic impact of CD2 antigen expression for 651 patients with T-lineage acute lymphoblastic leukemia (ALL), who were enrolled in front-line Childrens Cancer Group treatment studies between 1983 and 1994. There was a statistically significant correlation between the CD2 antigen positive leukemic cell content of bone marrow and probability of remaining in bone marrow remission, as well as overall event-free survival (EFS) (P = .0003 and P = .002, log-rank tests for linear trend). When compared with patients with the highest CD2 expression level (> 75% positivity), the life table relative event rate (RER) was 1.22 for patients with intermediate range CD2 expression level (30% to 75% positivity) and 1.81 for “CD2-negative” patients (< 30% positivity). At 6 years postdiagnosis, the EFS estimates for the three CD2 expression groups (low positivity to high positivity) were 52.8%, 65.5%, and 71.9%, respectively. CD2 expression remained a significant predictor of EFS after adjustment for the effects of other covariates by multivariate regression, with a RER of 1.47 for CD2- negative patients (P = .04). Analysis of T-lineage ALL patients shows a significant separation in EFS after adjustment for the National Cancer Institute (NCI) age and white blood cell (WBC) criteria for standard and high-risk ALL (P = .002, RER = 1.67). The determination of CD2 expression on leukemic cells helped identify patients with the better and poorer prognoses in both of these risk group subsets. For standard risk T-lineage ALL, CD2-negative patients had a worse outcome (P = .0007, RER = 2.92) with an estimated 5-year EFS of 55.9% as compared with 78.3% for the CD2-positive patients. Thus, CD2 negativity in standard risk T-lineage ALL identified a group of patients who had a worse outcome than high-risk T-lineage ALL patients who were CD2 positive. The percentage of CD2 antigen positive leukemic cells from T- lineage ALL patients is a powerful predictor of EFS after chemotherapy. This prognostic relationship is the first instance in which a biological marker in T-lineage ALL has been unequivocally linked to treatment outcome.

Influence of Race and Nutritional Status on the Long Term Event Free Survival in Childhood Acute Lymphoblastic Leukemia (ALL): A 14-year Follow-up with a Reduced BFM-Based Treatment Protocol (GBTLI ALL-93)

Blood ◽  
2008 ◽  
Vol 112 (11) ◽  
pp. 13-13
Author(s):  
Silvia Regina Brandalise ◽  
Maria Pombo-de-Oliveira ◽  
Vitoria Régia Pereira Pinheiro ◽  
Maria Jose Mastellaro ◽  
Waldir Veiga Pereira ◽  
...  
Keyword(s):  
High Risk ◽  
Complete Remission ◽  
Nutritional Status ◽  
Risk Group ◽  
Treatment Protocol ◽  
Low Risk ◽  
Event Free Survival ◽  
Free Survival ◽  
All Treatment

Abstract Background: Different event-free survival rates (EFS) of childhood ALL treatment regarding race, were published in the literature. However, a better consensus exists considering the bad prognosis of undernutrition. Taking into account the social economic reality of a low-income country such as Brazil, the systematic evaluation of these variables is of utmost importance, while inserted in a modern ALL treatment protocol. Objective: To compare, prospectively, the long-term EFS rates of previously untreated children with ALL, according to race and nutritional status at diagnosis. Methods: Patients were classified as Low Risk and High Risk according to NCI Criteria. Treatment schedule: Low Risk group: Remission induction therapy with DEXA 6mg/m2/d × 28 days, VCR 1.5 mg/m2/wk × 4, Daunomycin 25 mg/m2/wk × 4, L-ASP 10.000 U/m2/dose × 8, Ara-C 75mg/m2/dose × 8 and TIT therapy (day 0,28 and 42). Intensification therapy with MTX 2g/m2/wk × 4, 24 h continuous infusion with LCV rescue 15mg/m2/dose × 4, 6MP-50mg/m2 d × 21days and TIT therapy (x 4). Re-induction therapy: Dexa 6mg/m2 d × 21days, VCR 1.5mg/m2/wk × 4, L-ASP 10.000 U/m2/d × 4, 6-MP 50mg/m2/d × 14days, Ara-C 75 mg/m2/d × 4 and TIT therapy (x3). Central randomization was done for maintenance therapy duration (130 vs 103 wk). Maintenance: 6-MP 50mg/m2/d, MTX 25mg/m2/wk and TIT therapy every 8 weeks during all treatment. No CNS radiation was done. For High Risk patients, an induction intensification with intermediate dose of AraC (750 mg/m2/d × 6) was introduced, as well as, a rotational maintenance therapy with different pair of drugs were proposed (AraC 750mg/m2 × 4/Asp 6 000 U; Dexa/VCR/wk × 3 and 6-MP 75 mg/m2/d × 21 days/MTX 40 mg/m2/wk × 3). Prophylatic CNS radiation(18Gy) was done at wks 19–21 of therapy. Statistical analysis: EFS is defined as the time from diagnosis till any failure, relapse, death, or the development of a second malignancy. Continuous complete remission duration (CCR) is defined as EFS, contingent upon induction of a complete remission. EFS and CCR rates have been estimated by Kaplan and Meier’s method. Results: From October 1993 to September 1999, 867 patients were consecutively enrolled in the protocol GBTLI ALL-93. Fourteen pts were excluded (1.5%), due to wrong diagnosis or previous corticosteroid treatment. 853 pts were evaluated in this study. 447 pts were classified as Low Risk group (52%) and 406(48%) as High Risk. According to race, 226 pts (26.5%)were classified as black and 627 (73.5%) as white. Overall undernutrition was diagnosed among 7.0 % of the patients. In the black population 10.4% were undernourished, comparing with 5.7% in the white group. The 14yrs-EFS for all the study patients is 80% ± 2% and 55% ± 2.5% for the Low Risk and High Risk pts, respectively. Concerning race, the 14yrs-EFS is of 71.7% ± 4.5% for the black children, comparatively to 83% ± 2.1% for the white ones (p=0.01). According to the nutritional status, the EFS is of 70.2%± 1.7% and 53.0%± 6.8% for the nourished and undernourished children, respectively. Malnutrition had the worst desfavorable impact among the High Risk pts, with a 14yrs-EFS of 40.1% ± 8.7%, compared to those without malnutrition of 57.8% ± 2.7% (p = 0.05). Social and economical issues directly involved with treatment, were provided by means of free medical attention and drugs supplies. Treatment abandon was &lt; 1%. Conclusion: The black race and undernutrition had significant adverse effect on the long-term EFS among the patients of this study.

Unrelated donor stem cell transplantation compared with chemotherapy for children with acute lymphoblastic leukemia in a second remission: a matched-pair analysis

Blood ◽  
2003 ◽  
Vol 101 (10) ◽  
pp. 3835-3839 ◽  
Author(s):  
Anja Borgmann ◽  
Arend von Stackelberg ◽  
Reinhard Hartmann ◽  
Wolfram Ebell ◽  
Thomas Klingebiel ◽  
...  
Keyword(s):  
Stem Cell ◽  
Acute Lymphoblastic Leukemia ◽  
High Risk ◽  
Stem Cell Transplantation ◽  
Lymphoblastic Leukemia ◽  
Matched Pair ◽  
Event Free Survival ◽  
Free Survival ◽  
Matched Pair Analysis ◽  
Pair Analysis

Abstract Allogeneic stem cell transplantation (SCT) is frequently considered as treatment for relapsed childhood acute lymphoblastic leukemia (ALL). For patients without a matched sibling donor, SCT from unrelated donors (UD-SCT) has been increasingly performed during the past years. However, UD-SCT–related mortality and morbidity is still considerable, and the question remains as to which patients are at such high risk of recurrence that UD-SCT is indicated and, conversely, which patients do not require transplantation for long-term disease control. A matched-pair analysis was performed among patients treated according to Acute Lymphoblastic Leukemia Relapse Berlin-Frankfurt-Münster (ALL-REZ BFM) Study Group protocols after first relapse with chemotherapy or UD-SCT. Altogether 81 pairs were identified that could be matched exactly for site of relapse and immunophenotype, and as closely as possible for duration of first remission, age, diagnosis date, and peripheral blast cell count at relapse. No significant difference in the probability of event-free survival (pEFS) between UD-SCT and chemotherapy existed regarding 28 pairs with an intermediate prognosis (0.39 ± 0.10 vs 0.49 ± 0.11,P = .105), whereas the pEFS was significantly different in the 53 pairs with a poor prognosis (0.44 ± 0.07 vs 0.00 ± 0.00, P < .001). The major reasons of treatment failure among patients who underwent UD-SCT were therapy-related death (TRD; 24/81) and relapses (20/81). In contrast, TRD rarely occurred in patients treated with chemotherapy alone (3/81), but relapse was much more common (62/81). In conclusion, UD-SCT provides better event-free survival for children with high-risk relapsed ALL. However, there is no clear advantage of UD-SCT in patients with intermediate prognosis.

scholarly journals Effect of Blinatumomab vs Chemotherapy on Event-Free Survival Among Children With High-risk First-Relapse B-Cell Acute Lymphoblastic Leukemia

JAMA ◽  
2021 ◽  
Vol 325 (9) ◽  
pp. 843
Author(s):  
Franco Locatelli ◽  
Gerhard Zugmaier ◽  
Carmelo Rizzari ◽  
Joan D. Morris ◽  
Bernd Gruhn ◽  
...  
Keyword(s):  
Acute Lymphoblastic Leukemia ◽  
High Risk ◽  
B Cell ◽  
Lymphoblastic Leukemia ◽  
Event Free Survival ◽  
Free Survival ◽  
Cell Acute Lymphoblastic Leukemia ◽  
First Relapse

Physicians Compliance During Maintenance Therapy in Children with Down Syndrome and Acute Lymphoblastic Leukemia.

Blood ◽  
2012 ◽  
Vol 120 (21) ◽  
pp. 2577-2577
Author(s):  
Cathrine Bohnstedt ◽  
Mette Levinsen ◽  
Susanne Rosthøj ◽  
Bernward Zeller ◽  
Mervi Taskinen ◽  
...  
Keyword(s):  
Down Syndrome ◽  
Acute Lymphoblastic Leukemia ◽  
Maintenance Therapy ◽  
Lymphoblastic Leukemia ◽  
Target Range ◽  
Event Free Survival ◽  
Free Survival ◽  
Cox Regression Analysis ◽  
Children With Down Syndrome ◽  
Kaplan Meier

Abstract Abstract 2577 Children with Down syndrome (DS) and acute lymphoblastic leukemia (ALL) have an inferior prognosis compared to non-DS ALL patients. We reviewed Methotrexate (MTX)/Mercaptopurine (6MP) maintenance therapy data for children with DS treated according to the NOPHO ALL92 or the NOPHO ALL2000 protocols between 1992 and 2007. The five year event-free survival (pEFS5y) for the DS patients was inferior to the non-DS patients (0.50 ± 0.07 vs 0.77 ± 0.01, p<0.001). The 48 DS patients in 1st remission at the beginning of maintenance therapy had pEFS10y below the 522 non-DS control patients (pEFS10y: 0.58, 95%-CI 0.43–0.77 vs. 0.83, 95%-CI 0.80–0.86, p<0.0001). The DS patients received lower median doses of MTX (Median: 11.8 vs 15.4, p<0.0001) and 6MP (median: 45.6 vs. 59.4, p<0.0001). In Cox regression analysis male gender, presence of DS, and high median maintenance therapy white blood cell levels (mWBC) were associated with increased risk for relapse. The mWBC hazard ratio for DS-ALL patients was 2.0, p<0.0005). This supports that DS children with ALL should be treated as vigorously as non-DS ALL patients. Obtaining WBC levels within target range could potentially increase their cure rates. Figure 1: Kaplan-Meier curves for event free survival for DS and non-DS children. Figure 1:. Kaplan-Meier curves for event free survival for DS and non-DS children. Non-DS 513 464 443 433 418 DS 47 25 19 12 6 Disclosures: No relevant conflicts of interest to declare.

High Prevalence of Relapse in Australian Children with Ph-like Acute Lymphoblastic Leukemia Despite Risk Adapted Treatment

Blood ◽  
2015 ◽  
Vol 126 (23) ◽  
pp. 1419-1419 ◽  
Author(s):  
Susan L Heatley ◽  
Teresa Sadras ◽  
Eva Nievergall ◽  
Chung Hoow Kok ◽  
Phuong Dang ◽  
...  
Keyword(s):  
High Risk ◽  
Research Funding ◽  
Risk Group ◽  
Lymphoblastic Leukemia ◽  
Risk Groups ◽  
High Risk Group ◽  
Event Free Survival ◽  
Free Survival ◽  
Kaplan Meier ◽  
Medium Risk

Abstract Introduction: While remission rates for childhood acute lymphoblastic leukemia (ALL) now exceed 80%, relapsed ALL remains the leading cause of non-traumatic death in children. Recently, a high-risk group of B-progenitor ALL patients has been identified. Such cases exhibit a gene expression profile similar to that of BCR-ABL1 positive (Ph+) ALL but are BCR-ABL1 negative, and also experience poor treatment outcomes. This subset, termed Ph-like ALL, is characterised by a range of genetic alterations that activate cytokine receptor and kinase signalling, allowing potential targeting by available tyrosine kinase inhibitors (TKI). The frequency of Ph-like ALL in the Australian community and the prognosis in the setting of the first MRD (minimal residual disease) intervention trial by the Australian and New Zealand Children's Haematology/Oncology Group (ANZCHOG ALL8) is unknown. Method: We retrospectively screened 250 unselected samples that were available from children diagnosed with B-ALL, for Ph-like ALL. The children, aged between 1 and 18 years, were enrolled on the ANZCHOG ALL8 trial and recruited from 2002-2011. The criteria for stratification to the high-risk group, based upon Berlin-Frankfurt-Munster (BFM) protocols, were BCR-ABL1 or MLL t(4;11) translocation; poor prednisolone response at day 8; failure to achieve remission by day 33 or high MRD (>5 x10-4) at day 79. MRD was measured by RQ-PCR for patient-specific immunoglobulin and T-cell receptor rearrangements. All patients received a standard BFM four drug induction chemotherapy regimen including a prednisolone pre-phase and intrathecal methotrexate. High-risk patients received a further three novel intensive blocks of chemotherapy followed by transplant in most cases. Patients were screened for Ph-like ALL using a custom Taqman Low Density Array (TLDA) based upon previous reports. Fusions were then confirmed by RT-PCR for 30 known fusions, Sanger sequencing, mRNA sequencing and/or FISH. Results: Ten percent (25/250) of children in this cohort were identified as having Ph-like ALL, with most fusions converging on kinase activating pathways (Table 1). Three Ph-like ALL patients were considered high-risk, the remaining 22 (88%) were medium risk. Five children with Ph-like ALL, that did not have a fusion identified by RT-PCR, are currently under further investigation. Furthermore, 15 of the 20 (75%) of rearrangements involved CRLF2 with 10 (66%) of these children relapsing. Strikingly, 56% (14/25) of children in the ALL8 cohort who were identified as Ph-like subsequently relapsed compared to 16% (36/225) who were not, with significantly worse event free survival (p<0.0001) (Figure 1). Conclusion: Here we demonstrate a significantly higher frequency of relapse amongst Australian children with Ph-like ALL compared to non Ph-like disease despite a MRD-adjusted intensification regimen. In this cohort, these children should be classified as high-risk due to high treatment failure rates with standard/medium risk regimens. Importantly, rapid identification of these patients may guide future intervention with targeted therapies, such as TKI, matched to the causative genetic lesion in this high-risk group. Figure 1. Fusions identified in Ph-like ALL from ANZCHOG ALL8 cohort. Figure 1. Fusions identified in Ph-like ALL from ANZCHOG ALL8 cohort. Figure 2. Kaplan-Meier estimates of event free survival for patients with Ph-like ALL and non Ph-like ALL (all risk groups). Figure 2. Kaplan-Meier estimates of event free survival for patients with Ph-like ALL and non Ph-like ALL (all risk groups). Disclosures Hughes: ARIAD: Honoraria, Research Funding; Bristol-Myers Squibb: Honoraria, Research Funding; Novartis: Honoraria, Research Funding. Mullighan:Incyte: Consultancy, Honoraria; Cancer Science Institute: Membership on an entity's Board of Directors or advisory committees; Amgen: Honoraria, Speakers Bureau; Loxo Oncology: Research Funding. White:Novartis: Honoraria, Research Funding; BMS: Honoraria, Research Funding.

Stem-Cell Transplantation in Children With Acute Lymphoblastic Leukemia: A Prospective International Multicenter Trial Comparing Sibling Donors With Matched Unrelated Donors—The ALL-SCT-BFM-2003 Trial

2015 ◽  
Vol 33 (11) ◽  
pp. 1265-1274 ◽  
Author(s):  
Christina Peters ◽  
Martin Schrappe ◽  
Arend von Stackelberg ◽  
André Schrauder ◽  
Peter Bader ◽  
...  
Keyword(s):  
Stem Cell ◽  
Acute Lymphoblastic Leukemia ◽  
High Risk ◽  
Stem Cell Transplantation ◽  
Cell Transplantation ◽  
Lymphoblastic Leukemia ◽  
Event Free Survival ◽  
Hematopoietic Stem ◽  
Free Survival ◽  
Unrelated Donors

Purpose Although hematopoietic stem-cell transplantation is widely performed in children with high-risk acute lymphoblastic leukemia (ALL), the influence of donor types is poorly understood. Thus, transplantation outcomes were compared in the prospective multinational Berlin-Frankfurt-Muenster (BFM) study group trial: ALL-SCT-BFM 2003 (Allogeneic Stem Cell Transplantation in Children and Adolescents with Acute Lymphoblastic Leukemia). Patients and Methods After conditioning with total-body irradiation and etoposide, 411 children with high-risk ALL received highly standardized stem-cell transplantations during the first or later remissions. Depending on donor availability, grafts originated from HLA-genoidentical siblings or from HLA-matched unrelated donors who were identified and matched by high-resolution allelic typing and were compatible in at least 9 of 10 HLA loci. Results Four-year event-free survival (± standard deviation [SD]) did not differ between patients with transplantations from unrelated or sibling donors (0.67 ± 0.03 v 0.71 ± 0.05; P = .405), with cumulative incidences of nonrelapse mortality (± SD) of 0.10 ± 0.02 and 0.03 ± 0.02 (P = .017) and relapse rates (± SD) of 0.22 ± 0.02 and 0.24 ± 0.04 (P = .732), respectively. Among recipients of transplantations from unrelated donors, no significant differences in event-free survival, overall survival, or nonrelapse mortality were observed between 9/10 and 10/10 matched grafts or between peripheral blood stem cells and bone marrow. The absence of chronic graft-versus-host disease had no effect on event-free survival. Engraftment was faster after bone marrow transplantation from siblings and was associated with fewer severe infections and pulmonary complications. Conclusion Outcome among high-risk pediatric patients with ALL after hematopoietic stem-cell transplantation was not affected by donor type. Standardized myeloablative conditioning produced a low incidence of treatment-related mortality and effective control of leukemia.

scholarly journals Long-term and quality of survival in patients treated for acute lymphoblastic leukemia during the pediatric age

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Lara Devilli ◽  
Chiara Garonzi ◽  
Rita Balter ◽  
Elisa Bonetti ◽  
Matteo Chinello ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Acute Lymphoblastic Leukemia ◽  
Lymphoblastic Leukemia ◽  
Current Treatment ◽  
Event Free Survival ◽  
Term Survival ◽  
Free Survival ◽  
Long Term Survival

Long-term survival for acute lymphoblastic leukemia (ALL) in children improved over the last three decades up to 80-90% of affected patients. Consequently, the quality of life of survivors has become increasingly important. This study analyses the clinical features and outcome of 119 children with ALL, focusing on the quality of long-term survival in a subset of 22 patients over 18 years of age. Among this group, the 10-year event-free survival and overall survival were 83.1% (C.I. 74.0-89.2) and 88.4% (C.I. 80.9-93.1), respectively. Treatment related long-term medical complications were reported only in 2 patients (9.1%). Secondary school was completed successfully in 20 of 22 patients (89.9%). The remaining 2 patients were still attending at the time of the analysis. In conclusion, current treatment for ALL is well tolerated and does not compromise significantly the quality of life of survivors.

scholarly journals L-Asparaginase Toxicity in the Treatment of Children and Adolescents with Acute Lymphoblastic Leukemia

2021 ◽  
Vol 10 (19) ◽  
pp. 4419
Author(s):  
Madalina-Petronela Schmidt ◽  
Anca-Viorica Ivanov ◽  
Daniel Coriu ◽  
Ingrith-Crenguta Miron
Keyword(s):  
Acute Lymphoblastic Leukemia ◽  
Children And Adolescents ◽  
Lymphoblastic Leukemia ◽  
Event Free Survival ◽  
Long Term Outcomes ◽  
Term Survival ◽  
Free Survival ◽  
The Impact

Asparaginase is a basic component of chemotherapy in pediatric acute lymphoblastic leukemia (ALL) and has played a crucial role in improving the long-term survival of this disease. The objectives of this retrospective study were to elucidate the toxicity profile associated with asparaginase in children and adolescents with ALL, to analyze the impact of each type of toxicity on long-term outcomes, and to identify risk factors. We analyzed the medical charts of 165 patients diagnosed with ALL at Sf. Maria Iasi Children’s Hospital from 2010 to 2019 and treated according to a chemotherapeutic protocol containing asparaginase. The median duration of follow-up was 5 years (0.1–11.5 years). Groups of patients with specific types of toxicity were compared to groups of patients without toxicity. We found the following incidence of asparaginase-associated toxicity: 24.1% clinical hypersensitivity, 19.4% hepatotoxicity, 6.7% hypertriglyceridemia, 4.2% hyperglycemia, 3.7% osteonecrosis, 3% pancreatitis, 2.4% thrombosis, and 1.2% cerebral thrombosis. Overall, 82 patients (49.7%) had at least one type of toxicity related to asparaginase. No type of toxicity had a significant impact on overall survival or event-free survival. Being older than 14 years was associated with a higher risk of osteonecrosis (p = 0.015) and hypertriglyceridemia (p = 0.043) and a lower risk of clinical hypersensitivity (p = 0.04). Asparaginase-related toxicity is common and has a varied profile, and its early detection is important for realizing efficient and appropriate management.

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