B-lineage acute lymphoblastic leukemia (B-ALL) is a common subtype of acute leukemia in children. PAX5 plays a central role in B-cell development and differentiation. In this study, we analyzed PAX5 expression levels, transactivation domain mutations/deletions in B-ALL patients (n=115) and healthy controls (n=10). Relative PAX5 mRNA levels were significantly increased in B-ALL patients (p<0.0001). PAX5 expression was also evaluated in three different B-ALL subgroups (pro B, Common B and Pre B ALL) and showed stage specific expression levels. Pro B (p=0.04) and pre B (p=0.04) patients showed significantly high PAX5 mRNA levels compared to stage specific controls. At least one deletion of exons 7-8 or 9 has been identified in the 41% of the patients. CD34 positivity in patients and presence of large deletions (Δ7/8/9) showed a significant correlation (p=0.05). None of our patients showed PAX5 point mutations, but two previously identified SNPs (rs3780135 and rs35469494) were detected. Our results support that PAX5 is a critical factor in B-ALL development and aberrant PAX5 expression especially at early stages may leads to leukemic transformation.
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http://dx.doi.org/10.1016/j.leukres.2011.07.017 | DOI Listing |
JCO Glob Oncol
January 2025
Division of Haematology/Oncology, The Hospital for Sick Children, Toronto, Canada.
Purpose: Patients with adolescent and young adult (AYA) cancer are recognized as a vulnerable subpopulation in high-income countries (HICs). Although survival gaps between HIC and low- and middle-income country (LMIC) children with cancer are well described, LMIC AYAs have been neglected. We conducted a systematic review to describe cancer outcomes among LMIC AYAs.
View Article and Find Full Text PDFInt J Hematol
January 2025
Department of Hematology, The 920th Hospital of Joint Logistics Support Force, No.212, Da Guan Road, Xishan District, Kunming, 650100, Yunnan, China.
Background: The treatment of relapsed/refractory T cell acute lymphoblastic leukemia (R/R T-ALL) is a significant challenge in hematologic oncology, and no standard salvage treatment plan exists. Both Chinese and international clinical guidelines recommend combination chemotherapy including venetoclax.
Methods: Efficacy and safety of venetoclax, azacitidine, homoharringtonine, cytarabine, and aclarubicin (VA-HAA) combination therapy were retrospectively analyzed in 3 patients with R/R T-ALL at the Department of Hematology, 920th Hospital of the Joint Logistics Support Force, Chinese People's Liberation Army.
Ann Hematol
January 2025
Department of Hematology, Faculty of Medicine, Istanbul Medipol University, Istanbul, Turkey.
Early T-precursor acute lymphoblastic leukemia/lymphoma (ETP-ALL/LBL) is a rare and aggressive subtype of T-cell leukemia with poor prognosis and resistance to standard treatments. We report a 21-year-old male with ETP-ALL/LBL who, after an initial complete remission with the HOELZER protocol, experienced early relapse and was refractory to subsequent FLEND and BFM protocols. Following disease progression and complications, he was treated with a combination of daratumumab, venetoclax, azacitidine, and dexamethasone.
View Article and Find Full Text PDFActa Endocrinol (Buchar)
January 2025
Dokuz Eylül University, Faculty of Medicine, Division of Pediatric Endocrinology.
Context: Osteonecrosis (ON) is bone death caused by inadequate blood supply and its optimal management remains uncertain.
Objective: We describe the outcomes of BP (pamidronate) treatment in our patients.
Design: Data regarding clinical, laboratory, magnetic resonance imaging (MRI) studies, and bone mineral density measurements (BMD) were recorded before and one year after treatment (reevaluation).
Leuk Lymphoma
January 2025
Faculty of Pharmacy, Center for Biomolecular Pharmaceutical Analyses, University Ss. Cyril and Methodius in Skopje, Skopje, North Macedonia.
The role of next-generation sequencing (NGS) for minimal residual disease (MRD) assessment in pediatric acute lymphoblastic leukemia (ALL) is still under consideration. Fifty pediatric patients were prospectively evaluated for specific clonal rearrangements of immunoglobulin and T-cell receptor genes using NGS analysis at diagnosis and on days 33 and 78 from therapy onset. The prognostic value or the NGS-MRD status was analyzed after a median follow-up of 4 years.
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