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Chauvet P, Moisan R, Mongbo S, Naban S, Abou-Chahla W, Nelken B, Barbati M, Duployez N, Podvin B, Dubois R, Bruno B. Philadelphia chromosome-positive B-cell lymphoblastic lymphoma in a child: Case report and literature review. Pediatr Blood Cancer 2024; 71:e30884. [PMID: 38265257 DOI: 10.1002/pbc.30884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Accepted: 01/10/2024] [Indexed: 01/25/2024]
Affiliation(s)
- Paul Chauvet
- CHU de Lille, Service d'hématologie pédiatrique, Université de Lille, Lille, France
- CHU de Lille, Maladies du Sang, Université de Lille, Lille, France
| | - Rafael Moisan
- CHU de Lille, Service d'hématologie pédiatrique, Université de Lille, Lille, France
| | - Sarah Mongbo
- CHU de Lille, Service d'hématologie pédiatrique, Université de Lille, Lille, France
| | - Soumeya Naban
- CHU de Lille, Service d'hématologie pédiatrique, Université de Lille, Lille, France
| | - Wadih Abou-Chahla
- CHU de Lille, Service d'hématologie pédiatrique, Université de Lille, Lille, France
| | - Brigitte Nelken
- CHU de Lille, Service d'hématologie pédiatrique, Université de Lille, Lille, France
| | - Melissa Barbati
- CHU de Lille, Service d'hématologie pédiatrique, Université de Lille, Lille, France
| | - Nicolas Duployez
- CHU de Lille, Service d'hématologie biologique, Université de Lille, Lille, France
| | - Benjamin Podvin
- CHU de Lille, Service d'hématologie biologique, Université de Lille, Lille, France
| | - Romain Dubois
- CHU de Lille, Service d'Anatomo-pathologie, Université de Lille, Lille, France
| | - Bénédicte Bruno
- CHU de Lille, Service d'hématologie pédiatrique, Université de Lille, Lille, France
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Liu Q, Yu X, Wen J, Yin N, Liao X, Zou P, Guo Y, Song L, Xiao J. Genomic signatures and prognosis of advanced stage Chinese pediatric T cell lymphoblastic lymphoma by whole exome sequencing. Front Pediatr 2023; 11:1224966. [PMID: 37664545 PMCID: PMC10469305 DOI: 10.3389/fped.2023.1224966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Accepted: 07/31/2023] [Indexed: 09/05/2023] Open
Abstract
Objective To investigate the genomic signatures and prognosis of advanced-stage T cell lymphoblastic lymphoma (T-LBL) and to examine the relationship between T-LBL and T cell acute lymphoblastic leukemia (T-ALL). Methods 35 Chinese T-LBL children with stage III or IV disease were recruited for this study. They were treated with combination chemotherapy and whole exome sequencing. The relationship of the clinical features, prognosis and specific gene mutations was researched. Gene chips of T-LBL and T-ALL were downloaded from a database, and differential gene expression was analyzed. Results Germline causal gene mutations (CARS or MAP2K2) were detected in 2 patients; 3.06 ± 2.21 somatic causal gene mutations were identified in the 35 patients, and somatic mutations were observed in the NOTCH1, FBXW7, PHF6 and JAK3 genes. NOTCH1 mutations were significantly associated with FBXW7 mutations, and the age at diagnosis of patients with NOTCH1-FBXW7 mutations was less than that of patients without such mutations (P < 0.05). 32 patients achieved complete remission (CR), and 14 and 18 patients were classified into the intermediate risk (IR) group and high risk (HR) group. During a median follow-up of 44 months, 3 patients relapsed. Three-year prospective event free survival (pEFS) was 82.286%, and no significant differences of pEFS were found for different sexes, ages, or statuses of NOTCH1-FBXW7 mutations, (P > 0.05); however, the mean survival time of the IR group was longer than that of the HR group (P < 0.05). Differential expression of genes in the T-LBL and/or T-ALL datasets was analyzed using the R package limma, and 1/3 of the differentially expressed genes were found in both the T-ALL and T-LBL datasets. High expression of PI3K-Akt signal pathway genes and the USP34 gene was found in the T-LBL dataset. Conclusion Although T-ALL and T-LBL both originate from precursor T-cells and are considered different manifestations of the same disease and the outcome of T-LBL is favorable when using T-ALL-based chemotherapy, there are differences in the gene distribution between T-LBL and T-ALL. It seems that the PI3K-Akt signaling pathway and the USP34 gene play important roles in T-LBL, but medicines targeting the USP34 gene or the PI3K-Akt pathway may be invalid.
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Affiliation(s)
- Qinglin Liu
- First Clinical College of Chongqing Medical University, Chongqing, China
| | - Xiang Yu
- Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, China
- National Clinical Research Center for Child Health and Disorders, Chongqing, China
- Chongqing Key Laboratory of Pediatrics, Chongqing, China
| | - Jinquan Wen
- Department of Pediatric Hematology, Hospital of Xianyang Caihong, Shaanxi, China
| | - Nange Yin
- Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, China
- National Clinical Research Center for Child Health and Disorders, Chongqing, China
- Department of Pharmacy, Children’s Hospital of Chongqing Medical University, Chongqing, China
| | - Xin Liao
- Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, China
- Department of Hematology, Children’s Hospital of Chongqing Medical University, Chongqing, China
| | - Pinli Zou
- Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, China
- Department of Hematology, Children’s Hospital of Chongqing Medical University, Chongqing, China
| | - Yuxia Guo
- Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, China
- National Clinical Research Center for Child Health and Disorders, Chongqing, China
- Department of Hematology, Children’s Hospital of Chongqing Medical University, Chongqing, China
| | - Lin Song
- Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, China
- Department of Pharmacy, Children’s Hospital of Chongqing Medical University, Chongqing, China
| | - Jianwen Xiao
- Chongqing Key Laboratory of Pediatrics, Chongqing, China
- Department of Hematology, Children’s Hospital of Chongqing Medical University, Chongqing, China
- China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing, China
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Tecchio C, Russignan A, Krampera M. Immunophenotypic measurable residual disease monitoring in adult acute lymphoblastic leukemia patients undergoing allogeneic hematopoietic stem cell transplantation. Front Oncol 2023; 13:1047554. [PMID: 36910638 PMCID: PMC9992536 DOI: 10.3389/fonc.2023.1047554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2022] [Accepted: 01/11/2023] [Indexed: 02/24/2023] Open
Abstract
Allogeneic hematopoietic stem cell transplantation (allo-HSCT) offers a survival benefit to adult patients affected by acute lymphoblastic leukemia (ALL). However, to avoid an overt disease relapse, patients with pre or post transplant persistence or occurrence of measurable residual disease (MRD) may require cellular or pharmacological interventions with eventual side effects. While the significance of multiparametric flow cytometry (MFC) in the guidance of ALL treatment in both adult and pediatric patients is undebated, fewer data are available regarding the impact of MRD monitoring, as assessed by MFC analysis, in the allo-HSCT settings. Aim of this article is to summarize and discuss currently available information on the role of MFC detection of MRD in adult ALL patients undergoing allo-HSCT. The significance of MFC-based MRD according to sensitivity level, timing, and in relation to molecular techniques of MRD and chimerism assessment will be also discussed.
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Affiliation(s)
- Cristina Tecchio
- Department of Medicine, Section of Hematology and Bone Marrow Transplant Unit, University of Verona, Verona, Italy
| | - Anna Russignan
- Department of Medicine, Section of Hematology and Bone Marrow Transplant Unit, University of Verona, Verona, Italy
| | - Mauro Krampera
- Department of Medicine, Section of Hematology and Bone Marrow Transplant Unit, University of Verona, Verona, Italy
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Summers RJ, Teachey DT. SOHO State of the Art Updates and Next Questions | Novel Approaches to Pediatric T-cell ALL and T-Lymphoblastic Lymphoma. CLINICAL LYMPHOMA, MYELOMA & LEUKEMIA 2022; 22:718-725. [PMID: 35941070 PMCID: PMC9644234 DOI: 10.1016/j.clml.2022.07.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 07/15/2022] [Indexed: 06/15/2023]
Abstract
While outcomes for children with T-cell acute lymphoblastic leukemia (T-ALL) and T-lymphoblastic lymphoma (T-LL) have improved significantly with contemporary therapy, outcomes for patients with relapsed or refractory (r/r) disease remain dismal. Improved risk stratification and the incorporation of novel therapeutics have the potential to improve outcomes further in T-ALL/T-LL by limiting relapse risk and improving salvage rates for those with r/r disease. In this review we will discuss the challenges and new opportunities for improved risk stratification in T-ALL and T-LL. We will further discuss the recent incorporation of the novel therapeutics nelarabine and bortezomib into front-line therapy for children with T-ALL and T-LL. Finally, we will address new classes of targeted small molecule inhibitors, immunotherapeutics, and chimeric antigen receptor T-cell therapies under investigation in r/r T-ALL and T-LL.
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Affiliation(s)
- Ryan J Summers
- Aflac Cancer and Blood Disorders Center, Children’s Healthcare of Atlanta, Atlanta, GA 30322 USA
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA 30322 USA
| | - David T Teachey
- The Children’s Hospital of Philadelphia, Philadelphia, PA 19104 USA
- University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104 USA
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Vijayasekharan K, Kc A, Prasad M, Dhamne C, Roy Moulik N, Shet T, Sridhar E, Laskar S, Kembhavi S, Shah S, Gujral S, Narula G, Banavali SD. Clinical outcomes and prognostic factors in children with B-cell lymphoblastic lymphoma (LBL) treated according to on modified BFM-90 protocol: Experience from a Tertiary cancer care center in India. Pediatr Hematol Oncol 2022; 39:427-440. [PMID: 35179438 DOI: 10.1080/08880018.2021.2005725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Pediatric B-cell lymphoblastic lymphoma (LBL) is a rare entity, and appropriate treatment for pediatric B-cell LBL is not well defined. While intensive ALL type regimens achieve long term survival of 90% across Western co-operative group trials, published data from Asian studies on long term outcomes are scarce. We retrospectively analyzed the data of pediatric B-cell LBL patients treated between January 2010 and December 2017 on a uniform protocol (modified BFM 90). Kaplan-Meier method was used to estimate the survival and Cox regression models to identify prognostic factors. Of 21 patients who received treatment on the modified BFM-90 protocol, 17(81%) were alive in remission, 3(14%) had relapse, and 1(4%) had treatment-related mortality (TRM) while in remission. Two of 3 relapsed patients subsequently expired. With a median follow-up of 66 months (range 6-114), 5-year event free survival (EFS) and overall survival (OS) were 80% (95% CI:71-89%) and 91% (95% CI:85-97%), respectively. While delayed presentation from symptom onset (p=0.030), and partial response at early (D35) interim assessment (p=0.025) had inferior EFS, patients with elevated baseline LDH had a worse OS (p=0.037). Outcomes of pediatric B-cell LBL patients treated on a modified BFM-90 protocol at a single center in India were excellent. In our study, higher disease burden manifested by elevated baseline LDH and delayed presentation (≥3months) and partial interim response portend poorer survival.Supplemental data for this article is available online at https://doi.org/10.1080/08880018.2021.2005725.
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Affiliation(s)
- Kalasekhar Vijayasekharan
- Department of Medical Oncology, Tata Memorial Center, Pediatric Hematolymphoid Disease Management Group, Mumbai, Maharashtra, India.,Homi Bhabha National Institute, Mumbai, Maharashtra, India.,Department of Pediatric Oncology, Regional Cancer Centre, Trivandrum, Kerala, India
| | - Anand Kc
- Department of Medical Oncology, Tata Memorial Center, Pediatric Hematolymphoid Disease Management Group, Mumbai, Maharashtra, India.,Homi Bhabha National Institute, Mumbai, Maharashtra, India
| | - Maya Prasad
- Department of Medical Oncology, Tata Memorial Center, Pediatric Hematolymphoid Disease Management Group, Mumbai, Maharashtra, India.,Homi Bhabha National Institute, Mumbai, Maharashtra, India
| | - Chetan Dhamne
- Department of Medical Oncology, Tata Memorial Center, Pediatric Hematolymphoid Disease Management Group, Mumbai, Maharashtra, India.,Homi Bhabha National Institute, Mumbai, Maharashtra, India
| | - Nirmalya Roy Moulik
- Department of Medical Oncology, Tata Memorial Center, Pediatric Hematolymphoid Disease Management Group, Mumbai, Maharashtra, India.,Homi Bhabha National Institute, Mumbai, Maharashtra, India
| | - Tanuja Shet
- Department of Pathology, Tata Memorial Center, Mumbai, Maharashtra, India.,Homi Bhabha National Institute, Mumbai, Maharashtra, India
| | - Epari Sridhar
- Department of Pathology, Tata Memorial Center, Mumbai, Maharashtra, India.,Homi Bhabha National Institute, Mumbai, Maharashtra, India
| | - Siddhartha Laskar
- Department of Radiation Oncology, Tata Memorial Center, Mumbai, Maharashtra, India.,Homi Bhabha National Institute, Mumbai, Maharashtra, India
| | - Seema Kembhavi
- Department of Radiodiagnosis, Tata Memorial Center, Mumbai, Maharashtra, India.,Homi Bhabha National Institute, Mumbai, Maharashtra, India
| | - Sneha Shah
- Department of Nuclear Medicine, Tata Memorial Center, Mumbai, Maharashtra, India.,Homi Bhabha National Institute, Mumbai, Maharashtra, India
| | - Sumeet Gujral
- Department of Pathology, Tata Memorial Center, Mumbai, Maharashtra, India.,Homi Bhabha National Institute, Mumbai, Maharashtra, India
| | - Gaurav Narula
- Department of Medical Oncology, Tata Memorial Center, Pediatric Hematolymphoid Disease Management Group, Mumbai, Maharashtra, India.,Homi Bhabha National Institute, Mumbai, Maharashtra, India
| | - Shripad D Banavali
- Department of Medical Oncology, Tata Memorial Center, Pediatric Hematolymphoid Disease Management Group, Mumbai, Maharashtra, India.,Homi Bhabha National Institute, Mumbai, Maharashtra, India
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Intermesoli T, Weber A, Leoncin M, Frison L, Skert C, Bassan R. Lymphoblastic Lymphoma: a Concise Review. Curr Oncol Rep 2022; 24:1-12. [DOI: 10.1007/s11912-021-01168-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/25/2021] [Indexed: 12/19/2022]
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Toward Pediatric T Lymphoblastic Lymphoma Stratification Based on Minimal Disseminated Disease and NOTCH1/FBXW7 Status. Hemasphere 2021; 5:e641. [PMID: 34514345 PMCID: PMC8423389 DOI: 10.1097/hs9.0000000000000641] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Accepted: 08/12/2021] [Indexed: 12/05/2022] Open
Abstract
While outcome for pediatric T lymphoblastic lymphoma (T-LL) has improved with acute leukemia-type therapy, survival after relapse remains rare. Few prognostic markers have been identified: NOTCH1 and/or FBXW7 (N/F) mutations identify good prognosis T-LL and high-level minimal disseminated disease (MDD) is reported to be of poor prognosis. We evaluated MDD and/or MRD status by 8-color flow cytometry and/or digital droplet PCR in 82 pediatric T-LL treated according to the EURO-LB02 prednisone reference arm. Both techniques gave identical results for values ≥0.1%, allowing compilation. Unlike historical studies, an MDD threshold of 1% had no prognostic significance. The 54% (42/78) of patients with MDD ≥0.1% had a relatively favorable outcome (5-y overall survival [OS] 97.6% versus 80.6%, P = 0.015, 5-y event-free-survival [EFS] 95.2% versus 80.6%, P = 0.049). MDD lower than 0.1% had no impact in N/F mutated T-LL, but identified the N/F germline patient with a high risk of relapse. Combining oncogenetic and MDD status identified 86% of patients (n = 49) with an excellent outcome and 14% of N/F germline/MDD <0.1% patients (n = 8) with poor prognosis (5y-OS 95.9% versus 37.5%, P < 0.001; 5y-EFS 93.9% versus 37.5%, P < 0.001). If confirmed by prospective studies, MDD and N/F mutational status would allow identification of a subset of patients who merit consideration for alternative front-line treatment.
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Prognostic Role of Minimal Disseminated Disease and NOTCH1/FBXW7 Mutational Status in Children with Lymphoblastic Lymphoma: The AIEOP Experience. Diagnostics (Basel) 2021; 11:diagnostics11091594. [PMID: 34573936 PMCID: PMC8468850 DOI: 10.3390/diagnostics11091594] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 08/27/2021] [Accepted: 08/30/2021] [Indexed: 11/24/2022] Open
Abstract
NOTCH1/FBXW7 (N/F) mutational status at diagnosis is employed for T-cell lymphoblastic lymphoma (T-LBL) patients’ stratification in the international protocol LBL 2018. Our aim was to validate the prognostic role of Minimal Disseminated Disease (MDD) alone and in combination with N/F mutational status in a large retrospective series of LBL pediatric patients. MDD was analyzed in 132 bone marrow and/or peripheral blood samples by flow cytometry. Mutations in N/F genes were analyzed on 58 T-LBL tumor biopsies. Using the previously established cut-off of 3%, the four-year progression-free survival (PFS) was 57% for stage I–III patients with MDD ≥ 3% versus 80% for patients with MDD inferior to cut-off (p = 0.068). We found a significant worsening in the four-year PFS for nonmutated (51 ± 12%) compared to mutated patients (100%, p = 0.0013). Combining MDD and N/F mutational status in a subgroup of available cases, we found a statistically significant difference in the four-year PFS for different risk groups (p = 0.0012). Overall, our results demonstrate that N/F mutational status has a more relevant prognostic value than MDD at diagnosis. However, the combination of N/F mutations with MDD analysis could identify patients with very aggressive disease, which might benefit from a more intensive treatment.
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Ruxolitinib as a Novel Therapeutic Option for Poor Prognosis T-LBL Pediatric Patients. Cancers (Basel) 2021; 13:cancers13153724. [PMID: 34359628 PMCID: PMC8345121 DOI: 10.3390/cancers13153724] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 07/20/2021] [Accepted: 07/21/2021] [Indexed: 01/05/2023] Open
Abstract
Simple Summary Current treatment protocols for pediatric patients with T-Lymphoblastic lymphoma (T-LBL) allow the achievement of a complete remission in around 85% of T-LBL pediatric patients; however the overall survival rate of second-line treatments for patients with progressive disease or relapse is around 14%. Thus, the major issues to be addressed are the identification of a valuable predictor marker to foresee the disease risk and new therapeutic targets to improve relapsed/resistant patients’ outcome. We identified JAK2 Y1007-1008 as a potential prognosis marker as well as a therapeutic target for patients with progressive disease or relapse and suggest that its inhibition by ruxolitinib, a JAK1/2 FDA approved inhibitor, could represent a novel therapeutic approach to overcome therapy resistance and meliorate the outcome of pediatric T-LBL patients. Abstract Lymphoblastic lymphoma (LBL) is the second most common type of non-Hodgkin lymphoma in childhood, mainly of T cell origin (T-LBL). Although current treatment protocols allow a complete remission in 85% of cases, the second-line treatment overall survival for patients with progressive or relapsed disease is around 14%, making this the major issue to be confronted. Thus, we performed a Reverse Phase Protein Array study in a cohort of 22 T-LBL patients to find reliable disease risk marker(s) and new therapeutic targets to improve pediatric T-LBL patients’ outcome. Interestingly, we pinpointed JAK2 Y1007-1008 as a potential prognosis marker as well as a therapeutic target in poor prognosis patients. Hence, the hyperactivation of the JAK1/2-STAT6 pathway characterizes these latter patients. Moreover, we functionally demonstrated that STAT6 hyperactivation contributes to therapy resistance by binding the glucocorticoid receptor, thus inhibiting its transcriptional activity. This was further confirmed by specific STAT6 gene silencing followed by dexamethasone treatment. Finally, JAK1/2-STAT6 pathway inhibition by ruxolitinib, an FDA approved drug, in cell line models and in one T-LBL primary sample led to cell proliferation reduction and increased apoptosis. Globally, our results identify a new potential prognostic marker and suggest a novel therapeutic approach to overcome therapy resistance in pediatric T-LBL patients.
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Integrated omics approaches to predict T-LBL relapse risk. Blood 2021; 137:2280-2282. [PMID: 33914078 DOI: 10.1182/blood.2020009599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Minimal Disease Monitoring in Pediatric Non-Hodgkin's Lymphoma: Current Clinical Application and Future Challenges. Cancers (Basel) 2021; 13:cancers13081907. [PMID: 33921029 PMCID: PMC8071445 DOI: 10.3390/cancers13081907] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 04/07/2021] [Accepted: 04/11/2021] [Indexed: 12/13/2022] Open
Abstract
Minimal residual disease (MRD) detection is established routine practice for treatment stratification in leukemia and used for treatment optimization in adult lymphomas. Minimal disease studies in childhood non-Hodgkin lymphomas are challenged by stratified treatment in different subtypes, high cure rates, low patient numbers, limited initial tumor material, and early progression. Current clinical applications differ between the subtypes. A prognostic value of minimal disseminated disease (MDD) could not yet be clearly established for lymphoblastic lymphoma using flow cytometry and PCR-based methods for T-cell receptor (TCR) or immunoglobulin (IG) rearrangements. MYC-IGH fusion sequences or IG rearrangements enable minimal disease detection in Burkitt lymphoma and -leukemia. An additional prognostic value of MDD in Burkitt lymphoma and early MRD in Burkitt leukemia is implicated by single studies with risk-adapted therapy. MDD and MRD determined by PCR for ALK-fusion transcripts are independent prognostic parameters for patients with ALK-positive anaplastic large cell lymphoma (ALCL). They are introduced in routine clinical practice and used for patient stratification in clinical studies. Early MRD might serve as an endpoint for clinical trials and for guiding individual therapy. Validation of MDD and MRD as prognostic parameters is required for all subtypes but ALCL. Next-generation sequencing-based methods may provide new options and applications for minimal disease evaluation in childhood lymphomas.
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Hayashi RJ, Winter SS, Dunsmore KP, Devidas M, Chen Z, Wood BL, Hermiston ML, Teachey DT, Perkins SL, Miles RR, Raetz EA, Loh ML, Winick NJ, Carroll WL, Hunger SP, Lim MS, Gross TG, Bollard CM. Successful Outcomes of Newly Diagnosed T Lymphoblastic Lymphoma: Results From Children's Oncology Group AALL0434. J Clin Oncol 2020; 38:3062-3070. [PMID: 32552472 PMCID: PMC7479761 DOI: 10.1200/jco.20.00531] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/06/2020] [Indexed: 12/20/2022] Open
Abstract
PURPOSE The Children's Oncology Group (COG) protocol AALL0434 evaluated the safety and efficacy of multi-agent chemotherapy with Capizzi-based methotrexate/pegaspargase (C-MTX) in patients with newly diagnosed pediatric T-cell lymphoblastic lymphoma (T-LL) and gained preliminary data using nelarabine in high-risk patients. PATIENTS AND METHODS The trial enrolled 299 patients, age 1-31 years. High-risk (HR) patients had ≥ 1% minimal detectable disease (MDD) in the bone marrow at diagnosis or received prior steroid treatment. Induction failure was defined as failure to achieve a partial response (PR) by the end of the 4-week induction. All patients received the augmented Berlin-Frankfurt-Muenster (ABFM) C-MTX regimen. HR patients were randomly assigned to receive or not receive 6 5-day courses of nelarabine incorporated into ABFM. Patients with induction failure were nonrandomly assigned to ABFM C-MTX plus nelarabine. No patients received prophylactic cranial radiation; however, patients with CNS3 disease (CSF WBC ≥ 5/μL with blasts or cranial nerve palsies, brain/eye involvement, or hypothalamic syndrome) were ineligible. RESULTS At end-induction, 98.8% of evaluable participants had at least a PR. The 4-year event-free survival (EFS) and overall survival (OS) were 84.7% ± 2.3% and 89.0% ± 2.0%. The 4-year disease-free survival (DFS) from end-induction was 85.9% ± 2.6%. There was no difference in DFS observed between the HR and standard-risk groups (P = .29) or by treatment regimen (P = .55). Disease stage, tumor response, and MDD at diagnosis did not demonstrate thresholds that resulted in differences in EFS. Nelarabine did not show an advantage for HR patients. CNS relapse occurred in only 4 patients. CONCLUSION COG AALL0434 produced excellent outcomes in one of the largest trials ever conducted for patients with newly diagnosed T-LL. The COG ABFM regimen with C-MTX provided excellent EFS and OS without cranial radiation.
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Affiliation(s)
- Robert J. Hayashi
- Pediatric Hematology/Oncology, Washington School of Medicine, St Louis Children’s Hospital, St Louis, MO
| | - Stuart S. Winter
- Children’s Minnesota Cancer and Blood Disorders Program, Minneapolis, MN
| | | | - Meenakshi Devidas
- Department of Global Pediatric Medicine, St Jude Children’s Research Hospital, Memphis, TN
| | - Zhiguo Chen
- Department of Biostatistics, College of Medicine and College of Public Health and Health Professions, University of Florida, Gainesville, FL
| | - Brent L. Wood
- Laboratory Medicine, Seattle Children’s Hospital, Seattle, WA
| | - Michelle L. Hermiston
- Department of Pediatrics, UCSF Benioff Children’s Hospital and the Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, CA
| | - David T. Teachey
- Division of Oncology, Department of Pediatrics, Center for Childhood Cancer Research, Children’s Hospital of Philadelphia and Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Sherrie L. Perkins
- Department of Pathology, University of Utah Health Sciences Center, ARUP Institute for Clinical and Experimental Pathology, Salt Lake City, UT
| | - Rodney R. Miles
- Department of Pathology, University of Utah Health Sciences Center, ARUP Institute for Clinical and Experimental Pathology, Salt Lake City, UT
| | - Elizabeth A. Raetz
- Department of Pediatrics and Laura and Isaac Perlmutter Cancer Center at NYU Langone Health, New York, NY
| | - Mignon L. Loh
- Department of Pediatrics, UCSF Benioff Children’s Hospital and the Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, CA
| | - Naomi J. Winick
- Pediatric Hematology/Oncology, University of Texas Southwestern/Simmons Cancer Center, Dallas, TX
| | - William L. Carroll
- Department of Pediatrics and Laura and Isaac Perlmutter Cancer Center at NYU Langone Health, New York, NY
| | - Stephen P. Hunger
- Division of Oncology, Department of Pediatrics, Center for Childhood Cancer Research, Children’s Hospital of Philadelphia and Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Megan S. Lim
- Department of Pathology and Laboratory Medicine, Children’s Hospital of Philadelphia, and The Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Thomas G. Gross
- National Cancer Institute Center for Global Health, Rockville, MD
| | - Catherine M. Bollard
- Division of Blood and Marrow Transplantation, Children’s National Health System, Washington, DC
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Teachey DT, O'Connor D. How I treat newly diagnosed T-cell acute lymphoblastic leukemia and T-cell lymphoblastic lymphoma in children. Blood 2020; 135:159-166. [PMID: 31738819 PMCID: PMC6966932 DOI: 10.1182/blood.2019001557] [Citation(s) in RCA: 81] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Accepted: 11/14/2019] [Indexed: 12/11/2022] Open
Abstract
T-cell acute lymphoblastic leukemia (T-ALL) is an aggressive malignancy that has historically been associated with a very poor prognosis. Nevertheless, despite a lack of incorporation of novel agents, the development of intensified T-ALL-focused protocols has resulted in significant improvements in outcome in children. Through the use of several representative cases, we highlight the key changes that have driven these advances including asparaginase intensification, the use of induction dexamethasone, and the safe omission of cranial radiotherapy. We discuss the results of recent trials to explore key topics including the implementation of risk stratification with minimal residual disease measurement and how to treat high-risk subtypes such as early T-cell precursor ALL. In particular, we address current discrepancies in treatment between different cooperative groups, including the use of nelarabine, and provide rationales for current treatment protocols for both T-ALL and T-lymphoblastic lymphoma.
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Affiliation(s)
- David T Teachey
- Division of Oncology, Department of Pediatrics, Children's Hospital of Philadelphia, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - David O'Connor
- Department of Haematology, University College London (UCL) Cancer Institute, London, United Kingdom; and
- Department of Haematology, Great Ormond Street Hospital for Children, London, United Kingdom
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14
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Burkhardt B, Hermiston ML. Lymphoblastic lymphoma in children and adolescents: review of current challenges and future opportunities. Br J Haematol 2019; 185:1158-1170. [PMID: 30809797 DOI: 10.1111/bjh.15793] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Lymphoblastic lymphoma (LBL) is the second most common type of Non-Hodgkin Lymphoma (NHL) in childhood and adolescence, accounting for 25-35% of all cases. The majority, 70-80%, is of T-lymphoblastic origin while 20-25% arise from B lymphoblasts. With current therapy, the event-free and overall survivals for paediatric LBL patients now exceeds 80%. Therapy, especially in T-LBL with large mediastinal tumours, is challenging, with both significant morbidity and late sequela. An additional challenge is the dismal prognosis of patients with refractory or relapsed disease. This review article will focus on the growing knowledge of the pathogenesis and biology of LBL, recent advances and challenges in the therapy of LBL, and ongoing and future efforts and opportunities in optimizing therapy and developing novel targeted treatment approaches.
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Affiliation(s)
- Birgit Burkhardt
- Paediatric Haematology and Oncology, University Hospital Muenster, Muenster, Germany
| | - Michelle L Hermiston
- Pediatric Hematology and Oncology, University of California, San Francisco, CA, USA
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15
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Galardy PJ, Bedekovics T, Macintyre E, Miles RR. Lymphoma diagnostics: getting more from less. Br J Haematol 2019; 185:1136-1141. [PMID: 30784044 DOI: 10.1111/bjh.15788] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
In the modern era, clinicians and pathologists increasingly make challenging diagnoses in patients with suspected lymphoma using minimal amounts of diagnostic material. The increase in utilization of minimally invasive procedures, such as fine needle aspiration or needle core biopsies, lead to challenges in our ability to make accurate histopathological assessments of disease, including the integration of new diagnostic and prognostic testing, with smaller amounts of material. The trend towards minimally invasive diagnostics is also often in conflicting interest with researchers seeking to study tissue specimens to better understand the biology and genetics of these diseases to move the field forward. Thankfully, there are emerging fields which seek to extract large amounts of diagnostic and prognostic data out of material that is circulating in the blood of patients with lymphoma. Here we will review recent exciting data regarding the use of circulating tumour cells, circulating tumour DNA, and the detection and utility of circulating exosomes and how it can assist in diagnosis, prognosis and therapeutic monitoring. These advances hold the promise to enable continued safe patient care while also advancing discovery, translational and clinical research.
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Affiliation(s)
- Paul J Galardy
- Department of Pediatric and Adolescent Medicine, Mayo Clinic, Rochester, MN, USA.,Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, MN, USA.,Division of Pediatric Haematology-Oncology, Mayo Clinic, Rochester, MN, USA
| | - Tibor Bedekovics
- Department of Pediatric and Adolescent Medicine, Mayo Clinic, Rochester, MN, USA
| | - Elizabeth Macintyre
- Diagnostic Haematology, Necker-Enfants Malades Hospital, Assistance Publique Hôpitaux de Paris, Université Paris Descartes Sorbonne Cité, Institut Necker-Enfants Malades (INEM), Institut national de recherche médicale (INSERM) U1151, Paris, France
| | - Rodney R Miles
- Department of Pathology, University of Utah and ARUP Laboratories, Salt Lake City, UT, USA
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16
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Landmann E, Burkhardt B, Zimmermann M, Meyer U, Woessmann W, Klapper W, Wrobel G, Rosolen A, Pillon M, Escherich G, Attarbaschi A, Beishuizen A, Mellgren K, Wynn R, Ratei R, Plesa A, Schrappe M, Reiter A, Bergeron C, Patte C, Bertrand Y. Results and conclusions of the European Intergroup EURO-LB02 trial in children and adolescents with lymphoblastic lymphoma. Haematologica 2017; 102:2086-2096. [PMID: 28983060 PMCID: PMC5709108 DOI: 10.3324/haematol.2015.139162] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Accepted: 09/28/2017] [Indexed: 11/09/2022] Open
Abstract
In the European Intergroup EURO-LB02 trial, children and adolescents with lymphoblastic lymphoma underwent the non-Hodgkin lymphoma Berlin-Frankfurt-Münster protocol without prophylactic cranial radiotherapy. The primary aims of this trial were to test whether replacing prednisone with dexamethasone during induction increases event-free survival in the subgroups with T-cell lymphoblastic lymphoma and whether therapy duration could be reduced from 24 to 18 months (factorial design, randomizations). These questions could not be answered due to premature closure of the trial. Here we report on the secondary aims of the trial: whether the results of the NHL-BFM90 study could be reproduced and evaluation of disease features and prognostic factors. Three hundred and nineteen patients (66 with precursor B-cell lymphoblastic lymphoma, 233 with T-cell lymphoblastic lymphoma, 12 with mixed phenotype, 8 not classifiable) were enrolled. In induction, 215 patients received prednisone and 104 patients received dexamethasone. The median follow-up was 6.8 years (range, 3.0–10.3). The 5-year event-free survival was 82±2% [12 toxic deaths, 5 secondary malignancies, 43 non-response/relapse (central nervous system n=9; all received prednisone during induction)]. The event-free survival rate was 80±5% for patients with precursor B-cell lymphoblastic lymphoma, 82±3% for those with T-cell lymphoblastic lymphoma, and 100% for patients with a mixed phenotype. During induction, significantly more grade III/IV toxicities were observed in patients receiving dexamethasone, resulting in significant treatment delays. The number of toxic deaths did not differ significantly. The only variable associated with outcome was performance status at diagnosis. The 90% event-free survival rate for patients with T-cell lymphoblastic lymphoma shown in study NHL-BFM90 was not replicated, mainly due to more toxic deaths and central nervous system relapses. Dexamethasone in induction may prevent central nervous system relapse more effectively than prednisone but produces a higher burden of toxicity. (#NCT00275106).
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Affiliation(s)
- Eva Landmann
- Department of Pediatric Hematology and Oncology, Justus-Liebig-University, Giessen, Germany
| | - Birgit Burkhardt
- Department of Pediatric Hematology and Oncology, Children's University Hospital, Münster, Germany
| | - Martin Zimmermann
- Department of Pediatric Hematology and Oncology, Hannover Medical School, Germany
| | - Ulrike Meyer
- Department of Pediatric Hematology and Oncology, Justus-Liebig-University, Giessen, Germany
| | - Wilhelm Woessmann
- Department of Pediatric Hematology and Oncology, Justus-Liebig-University, Giessen, Germany
| | - Wolfram Klapper
- Department of Hematopathology and Lymph Node Registry, University Hospital, Kiel, Germany
| | - Grazyna Wrobel
- Department of Bone Marrow Transplantation, Children's Oncology and Hematology, Wroclaw Medical University, Poland
| | - Angelo Rosolen
- Clinica di Oncoematologia Pediatrica, Università di Padova, Italy
| | - Marta Pillon
- Clinica di Oncoematologia Pediatrica, Università di Padova, Italy
| | - Gabriele Escherich
- Clinic for Pediatric Hematology and Oncology, University Medical Center, Hamburg, Germany
| | - Andishe Attarbaschi
- Department of Pediatric Hematology and Oncology, St. Anna Children's Hospital, Medical University of Vienna, Austria
| | - Auke Beishuizen
- Department of Pediatric Hematology/Oncology, Erasmus MC - Sophia Children's Hospital, Rotterdam, the Netherlands and the Dutch Childhood Oncology Group, the Hague, the Netherlands
| | - Karin Mellgren
- Department of Pediatric Oncology and Hematology, The Queen Silvia Children's Hospital, Göteborg, Sweden
| | - Robert Wynn
- Central Manchester University Hospitals, Great Britain
| | - Richard Ratei
- Department of Hematology, Oncology and Tumor Immunology, Helios Klinikum, Berlin-Buch, Germany
| | - Adriana Plesa
- Department of Hematopathology and Flow Cytometry, CHU, Lyon-HCL, France
| | - Martin Schrappe
- Department of Pediatrics, Christian-Albrechts-University, Kiel, Germany
| | - Alfred Reiter
- Department of Pediatric Hematology and Oncology, Justus-Liebig-University, Giessen, Germany
| | - Christophe Bergeron
- Institut d'Hematologie et d'Oncologie Pediatrique, Centre Léon Bérard and HCL, Claude Bernard University, Lyon, France
| | | | - Yves Bertrand
- Institut d'Hematologie et d'Oncologie Pediatrique, Centre Léon Bérard and HCL, Claude Bernard University, Lyon, France
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17
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Adult T-type lymphoblastic lymphoma: Treatment advances and prognostic indicators. Exp Hematol 2017; 51:7-16. [DOI: 10.1016/j.exphem.2017.04.002] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Revised: 03/24/2017] [Accepted: 04/03/2017] [Indexed: 12/19/2022]
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18
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Michaux K, Bergeron C, Gandemer V, Mechinaud F, Uyttebroeck A, Bertrand Y. Relapsed or Refractory Lymphoblastic Lymphoma in Children: Results and Analysis of 23 Patients in the EORTC 58951 and the LMT96 Protocols. Pediatr Blood Cancer 2016; 63:1214-21. [PMID: 27037853 DOI: 10.1002/pbc.25990] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Revised: 02/25/2016] [Accepted: 03/06/2016] [Indexed: 12/23/2022]
Abstract
BACKGROUND The treatment of children with T-cell lymphoblastic lymphoma (T-LBL) and precursor B-cell lymphoblastic lymphoma (pB-LBL) has improved during the last decades. However, patients with relapsed or refractory lymphomas still have a poor prognosis. METHODS We report the characteristics and evolution of T-LBL and pB-LBL relapses in two multicenter prospective studies (LMT 96, European Organization for Research and Treatment of Cancer 58951). RESULTS From 1997 to 2008, 194 patients were included in these studies (157 T-LBL; 37 pB-LBL); among them, 23 patients underwent relapse or progression (18 T-LBL and 5 pB-LBL). The median age was 7.7 years (range 1.4-16.3). The survival rate at 8 years was 8.7% (21 deaths). The median time from diagnosis to relapse was 9 months [1-69] and 11 months [1-45] for T-LBL and pB-LBL, respectively. Twenty-two patients received a second-line treatment but remission was achieved in only seven patients. In 10 patients, intensification with hematopoietic stem cell transplantation (HSCT) was performed and four of them had a second relapse. Two patients still alive had T-LBL, experienced relapses 15 and 69 months after diagnosis, and received HSCT. Relapse during the intensive phase and second-line treatment without HSCT were identified as risk factors for bad prognosis (P = 0.01). CONCLUSIONS The results of second-line treatment, including intensive chemotherapy and HSCT, show that salvage treatment is still disappointing in controlling refractory forms. Early identification of patients at high risk of relapse is mandatory, allowing earlier intensification. Valid prognostic parameters, such as biological markers, are needed. International cooperation is warranted to collect more data on these rare diagnoses.
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Affiliation(s)
- Katell Michaux
- Pediatric Hematology/Oncology Department (IHOP), Hospices Civils de Lyon and Centre Léon Bérard, Lyon, France
| | - Christophe Bergeron
- Pediatric Hematology/Oncology Department (IHOP), Hospices Civils de Lyon and Centre Léon Bérard, Lyon, France
| | - Virginie Gandemer
- Pediatric Hematology Department, University Hospital, Rennes, France
| | - Françoise Mechinaud
- Pediatric Hematology/Oncology Department, University Hospital, Nantes, France
| | - Anne Uyttebroeck
- Pediatric Hematology/Oncology Department, University Hospital Gasthuisberg, Leuven, Belgium
| | - Yves Bertrand
- Pediatric Hematology/Oncology Department (IHOP), Hospices Civils de Lyon and Centre Léon Bérard, Lyon, France.,Pediatric Hematology Department, University Hospital, Rennes, France.,Pediatric Hematology/Oncology Department, University Hospital, Nantes, France.,Pediatric Hematology/Oncology Department, University Hospital Gasthuisberg, Leuven, Belgium.,Claude Bernard Lyon 1 University, Lyon, France
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19
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Cairo MS, Pinkerton R. Childhood, adolescent and young adult non-Hodgkin lymphoma: state of the science. Br J Haematol 2016; 173:507-30. [DOI: 10.1111/bjh.14035] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Mitchell S. Cairo
- Department of Pediatrics, Medicine, Pathology, Microbiology & Immunology and Cell Biology & Anatomy; New York Medical College; Valhalla NY USA
| | - Ross Pinkerton
- Department of Oncology; Children's Health Queensland; Brisbane Australia
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20
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Shiramizu B, Mussolin L, Woessmann W, Klapper W. Paediatric non-Hodgkin lymphoma - perspectives in translational biology. Br J Haematol 2016; 173:617-24. [PMID: 27009921 DOI: 10.1111/bjh.14009] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Exciting advances have been achieved for infants, children and adolescents diagnosed with, and treated for, non-Hodgkin lymphoma (NHL). In spite of these successes, new frontiers are being paved to improve the prognosis for those who relapse or have resistant disease. This review summarizes some of the novel approaches and ideas in NHL monitoring, diagnosis and treatment as discussed at the 5th International Symposium on Childhood, Adolescent and Young Adult Non-Hodgkin Lymphoma on October 22nd-24th 2015 in Varese, Italy.
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Affiliation(s)
- Bruce Shiramizu
- John A. Burns School of Medicine, Department of Pediatrics, University of Hawaii, Honolulu, USA
| | - Lara Mussolin
- Department of Woman and Child Health, University of Padova, Padova, Italy.,IRP-Istituto di Ricerca Pediatrica-Cittàdella Speranza, Padova, Italy
| | - Wilhelm Woessmann
- Department of Paediatric Haematology and Oncology, Justus-Liebig-University, Giessen, Germany.,Department of Paediatric Haematology and Oncology, Non-Hodgkin Lymphoma-Berlin-Frankfurt-Münster Study Centre, Justus-Liebig University, Giessen, Germany
| | - Wolfram Klapper
- Department of Pathology, Haematopathology Section, University-Hospital Schleswig-Holstein, University of Kiel, Kiel, Germany
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21
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Kelemen K, Holden J, Johnson LJ, Davion S, Robetorye RS. Immunophenotypic and cytogenetic findings of B-lymphoblastic leukemia/lymphoma associated with combined IGH/BCL2 and MYC rearrangement. CYTOMETRY PART B-CLINICAL CYTOMETRY 2016; 92:310-314. [PMID: 26517296 DOI: 10.1002/cyto.b.21334] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2015] [Revised: 10/19/2015] [Accepted: 10/28/2015] [Indexed: 11/09/2022]
Abstract
BACKGROUND B-lymphoblastic leukemias (B-LBL) with combined IGH/BCL2 and MYC rearrangement are rare and their clinical, cytogenetic and immunophenotypic features are not well characterized. Here, we describe a case of a 61-year-old woman with B-LBL associated with these cytogenetic alterations and present a review of the literature of this disease. METHODS Four-color flow cytometry (FC) was performed on a BD FACSCanto II flow cytometer. Data were analyzed with BD FACSDiva software. Cytogenetic, fluorescence in situ hybridization (FISH), and molecular studies were performed by conventional methods. A review of the literature was performed by a PubMed-assisted search. RESULTS Including our case, eight B-LBLs associated with a documented "double-hit" karyotype (IGH/BCL2 and 8q24/MYC rearrangement) were identified in the literature (male/female 2/6, age 15-65). Three occurred de-novo, and five had a history of a CD10+ B-cell lymphoma. The typical immunophenotype was CD10, CD19, TdT positive, and negative for CD34 and surface immunoglobulin (Ig), established either by FC or immunohistochemistry. Seven cases were CD20-, and one case was CD20+. Translocation partners of MYC varied, and included IGH, lambda light chain, and an unknown gene on chromosome 9. Prognosis was poor with median survival of five months. CONCLUSIONS Patients with B-LBL associated with a combined IGH/BCL2 and MYC rearrangement often have a history of a mature B-cell lymphoma. The immunophenotype of these cases is different from that of mature "double-hit" lymphomas; FC is essential to differentiate the B-LBL cases from the leukemic phase of mature B-cell lymphomas. © 2015 International Clinical Cytometry Society.
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Affiliation(s)
- Katalin Kelemen
- Department of Laboratory Medicine and Pathology, Mayo Clinic Hospital, Phoenix, Arizona
| | - Jaclyn Holden
- Department of Laboratory Medicine and Pathology, Mayo Clinic Hospital, Phoenix, Arizona
| | - Laura J Johnson
- Department of Laboratory Medicine and Pathology, Mayo Clinic Hospital, Phoenix, Arizona
| | - Simone Davion
- Department of Pathology, the Billings Clinic, Billings, Montana
| | - Ryan S Robetorye
- Department of Laboratory Medicine and Pathology, Mayo Clinic Hospital, Phoenix, Arizona
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