Hypereosinophilia (HE) is rare but often secondary to a nonhematologic disease such as allergic disorders and parasitic infections. HE can also be associated with hematologic malignancies and be the result of a clonal proliferation or reactive to another hematologic condition. Association of HE with acute lymphoblastic leukemia (ALL) is rare in children. We reported a case of a teenager presented with HE secondary to B-ALL who experienced severe cardiac complications with severe absolute eosinophil count. We compared his clinical evolution with other published cases and we reported 2 mutations linked to B-ALL never described before in this context.
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http://dx.doi.org/10.1097/MPH.0000000000001975 | DOI Listing |
J Clin Invest
January 2025
Division of Pediatric Hematology/Oncology, Department of Pediatrics, Pennsylvania State University College of Medicine, Hershey, United States of America.
Although nucleoporin 98 (NUP98) fusion oncogenes often drive aggressive pediatric leukemia by altering chromatin structure and expression of HOX genes, underlying mechanisms remain elusive. Here, we report that a Hoxb-associated lncRNA HoxBlinc was aberrantly activated in NUP98-PHF23 fusion-driven leukemias. HoxBlinc chromatin occupancies led to elevated MLL1 recruitment and aberrant homeotic topologically associated domains (TADs) that enhanced chromatin accessibilities and activated homeotic/hematopoietic oncogenes.
View Article and Find Full Text PDFInotuzumab ozogamicin (InO) is approved for treatment of relapsed/refractory acute lymphoblastic leukemia (R/R ALL). Previous studies reported higher rates of post- hematopoietic stem cell transplant (HSCT) hepatic sinusoidal obstruction syndrome (SOS) in patients receiving InO versus chemotherapy prior to HSCT. It is unknown if a lower InO dose would reduce risk of post-HSCT SOS or if it would impact efficacy.
View Article and Find Full Text PDFCureus
December 2024
Internal Medicine, Hospital de Braga, Braga, PRT.
Hairy cell leukemia (HCL) is a rare and slow-progressing lymphoid disorder commonly presenting with splenomegaly and cytopenias. The diagnosis can be challenging due to its nonspecific clinical presentation, frequently resembling other diseases. We report the case of a 48-year-old male patient, whose initial diagnostic hypotheses included cutaneous tuberculosis and reactive arthritis, but the diagnosis was confirmed as HCL after further investigation, including flow cytometry.
View Article and Find Full Text PDFNat Commun
January 2025
Department of Pharmacy and Pharmaceutical Sciences, St. Jude Children's Research Hospital, Memphis, TN, USA.
ETV6::RUNX1 is the most common fusion gene in childhood acute lymphoblastic leukemia (ALL) associated with favorable prognosis, but the optimal therapy for this subtype remains unclear. Profiling the genomic and pharmacological landscape of 194 pediatric ETV6::RUNX1 ALL cases, we uncover two transcriptomic clusters, C1 (61%) and C2 (39%). Compared to C1, the C2 subtype features higher white blood cell counts and younger age at diagnosis, as well as better early treatment responses.
View Article and Find Full Text PDFArch Argent Pediatr
January 2025
Infectious Diseases Service, Hospital de Niños Sor María Ludovica, La Plata, Argentina.
Mucormycosis is an opportunistic fungal infection with high mortality, especially in immunocompromised patients. This article emphasizes the importance of early diagnosis and aggressive treatment. We describe the case of a child with leukemia treated with corticosteroids, vincristine, and daunorubicin, who developed rhino-orbital mucormycosis.
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