scholarly journals Safety of Administration of BNT162b2 mRNA (Pfizer-BioNTech) COVID-19 Vaccine in Youths and Young Adults with a History of Acute Lymphoblastic Leukaemia and Allergy to PEG-Asparaginase

2021 ◽  
Author(s):  
Catherine Mark ◽  
Sumit Gupta ◽  
Angela Punnett ◽  
Julia Upton ◽  
Julia Orkin ◽  
...  
Keyword(s):  
Young Adults ◽  
Polyethylene Glycol ◽  
Acute Lymphoblastic Leukemia ◽  
North America ◽  
Acute Lymphoblastic Leukaemia ◽  
Lymphoblastic Leukaemia ◽  
Lymphoblastic Leukemia ◽  
Allergic Reactions ◽  
Vaccine Administration ◽  
History Of

Vaccination is a critical tool in the prevention of COVID-19 infection for individuals and for communities. The mRNA vaccines contain polyethylene glycol (PEG) as a stabilizer. Currently in North America only the BNT162b2 (Pfizer-BioNTech) mRNA vaccine is approved individuals 12 to 17 years of age. Most patients treated with contemporary regimens for acute lymphoblastic leukemia receive Peg-asparaginase and 10-30% will develop allergic reactions. Optimizing access and safety for vaccine administration for these patients critical. This report describes a process developed to support COVID vaccination in a cohort of adolescents and young adults with a history of PEG-asparaginase allergy.

scholarly journals Prevalence of early T-cell precursor acute lymphoblastic leukemia among immunophenotypically categorised acute T-cell lymphoblastic leukaemia cases

2021 ◽  
Author(s):  
Monika Gupta ◽  
Pinki Devi ◽  
Anjali Bishley ◽  
Sant Prakash Kataria ◽  
Rajeev Sen
Keyword(s):  
Acute Lymphoblastic Leukemia ◽  
T Cell ◽  
Acute Leukemia ◽  
Acute Lymphoblastic Leukaemia ◽  
B Cell ◽  
Lymphoblastic Leukaemia ◽  
Lymphoblastic Leukemia ◽  
Cell Lineage ◽  
Cell Precursor ◽  
Cell Markers

Acute lymphoblastic leukaemia is the most common hematopoietic malignancy in childhood, comprising of B-cell lineage (85%) and T-cell lineage (15%). Recent studies have identified a subtype of T-cell acute lymphoblastic leukaemia (T-ALL) termed “early T-cell precursors (ETP)” recognised as a new provisional entity in 2016 update to the World Health Organization (WHO) classification of acute leukaemia, early T-cell precursor acute lymphoblastic leukemia (ETP-ALL) is characterized by a unique immunophenotype and genetic profile and its origin has been found to be from migration of cells from thymus to bone marrow. Hence, our study aims at reporting the prevalence of ETP-ALL among immunophenotypically categorised acute T-cell lymphoblastic leukaemia cases. Present work is a retrospective observation of acute T-cell lymphoblastic leukemias and reporting ETP-ALL cases seen during the period of over two years (from August 2018 to August 2020) received for flowcytometry in the department of Pathology, PGIMS, Rohtak, Haryana. Peripheral blood showed features of acute leukemia and immunophenotyping was performed. Fourteen cases were received for flowcytometry showing features of acute leukemia and immunophenotyping was performed revealing two ETP-ALL cases with positivity for cytCD3, CD7 (T-cell markers), HLA-DR, CD13 (myeloid marker-aberrant expression), sCD34, CD117 (stem cell markers), CD19 (B-cell marker) and dim expression of CD45. This study is a supportive data for immunophenotypic identification of ETP-ALL cases in centres where genetic study and other ancillary techniques are not available. It needs to be differentiated from non ETP-ALLs as this entity has been reported to show treatment failure with the treatment modalities for non ETP-ALLs.

Expenditures among young adults with acute lymphoblastic leukemia by site of care

Cancer ◽  
2021 ◽  
Author(s):  
Julie A. Wolfson ◽  
Smita Bhatia ◽  
Jill Ginsberg ◽  
Laura K. Becker ◽  
David Bernstein ◽  
...  
Keyword(s):  
Young Adults ◽  
Acute Lymphoblastic Leukemia ◽  
Lymphoblastic Leukemia

scholarly journals DNA Methylation in T-Cell Acute Lymphoblastic Leukemia: In Search for Clinical and Biological Meaning

2021 ◽  
Vol 22 (3) ◽  
pp. 1388
Author(s):  
Natalia Maćkowska ◽  
Monika Drobna-Śledzińska ◽  
Michał Witt ◽  
Małgorzata Dawidowska
Keyword(s):  
Dna Methylation ◽  
Acute Lymphoblastic Leukemia ◽  
T Cell ◽  
Epigenetic Modification ◽  
Lymphoblastic Leukemia ◽  
Leukemic Cells ◽  
Global Methylation ◽  
Current State ◽  
History Of ◽  
Cell Acute Lymphoblastic Leukemia

Distinct DNA methylation signatures, related to different prognosis, have been observed across many cancers, including T-cell acute lymphoblastic leukemia (T-ALL), an aggressive hematological neoplasm. By global methylation analysis, two major phenotypes might be observed in T-ALL: hypermethylation related to better outcome and hypomethylation, which is a candidate marker of poor prognosis. Moreover, DNA methylation holds more than a clinical meaning. It reflects the replicative history of leukemic cells and most likely different mechanisms underlying leukemia development in these T-ALL subtypes. The elucidation of the mechanisms and aberrations specific to (epi-)genomic subtypes might pave the way towards predictive diagnostics and precision medicine in T-ALL. We present the current state of knowledge on the role of DNA methylation in T-ALL. We describe the involvement of DNA methylation in normal hematopoiesis and T-cell development, focusing on epigenetic aberrations contributing to this leukemia. We further review the research investigating distinct methylation phenotypes in T-ALL, related to different outcomes, pointing to the most recent research aimed to unravel the biological mechanisms behind differential methylation. We highlight how technological advancements facilitated broadening the perspective of the investigation into DNA methylation and how this has changed our understanding of the roles of this epigenetic modification in T-ALL.

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