Acute Promyelocytic Leukemia

Due to resource constraints, all-trans retinoic acid-based therapy was unavailable, and induction chemotherapy was administered, with a fatal outcome after one week. This case highlights gingival hypertrophy as an atypical early presentation and the impact of delayed diagnosis and limited access to essential therapy.

Acute promyelocytic leukemia (APL) is a highly curable form of acute myeloid leukemia (AML) when treated early with all-trans retinoic acid (ATRA) and arsenic trioxide (ATO)...The ATRA-ATO regimen showed substantial remission rates, but early deaths remain a concern. Increased survival rates in resource-constrained environments require improved early detection, referral, and supportive care.

Suspicion for DS should be heightened in patients with acute promyelocytic leukemia (M3 AML) who recently started induction chemotherapy, including all-trans retinoic acid or arsenic trioxide, and in those with non-M3 AML receiving differentiation agents (i.e., isocitrate dehydrogenase inhibitors, menin inhibitors, FMS-like tyrosine kinase 3 inhibitors)... DS represents a diagnostic challenge in the ED due to its nonspecific presentation and mimicry of infection. A high index of suspicion, combined with targeted imaging, laboratory evaluation, and early corticosteroid therapy, can improve outcomes.

Furthermore, in five cases, this method accurately monitored changes in transcript levels. This method, due to its simplified process without reverse transcription and thermal cycling as well as the free of clumsy instrument, holds promise as a point-of-care tool for MRD detection and could potentially prove invaluable in the regular follow-up and efficacy evaluation of cancer treatment.

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In addition, MGAT4A KO suppressed ERK/MAPK signaling, which contributed to differentiation. Our study highlights the critical role of GnT-IVa in regulating APL differentiation, which may provide a basis for developing new differentiation therapies for APL.

While limited by a single-case observation and heterogeneous reported data that preclude statistical analysis, this report expands the recognized clinical spectrum of TTMV::RARA APL and documents three previously unreported observations: spinal cord compression as the initial presentation, venetoclax-induced remission, and oral arsenic compound utilization. These findings suggest RNA-based fusion testing may be informative for PML::RARA-negative suspected APL with atypical presentations, although optimal diagnostic and therapeutic approaches await validation through collaborative studies.

RTS suppressed stemness-associated phenotypic features in a KG-1a-derived CD34+CD38- LSC-like model. These effects were associated with ERS, mitochondrial injury, and PINK1/Parkin-related mitophagy-like alterations.

Furthermore, marked myelofibrosis was identified in our patient - an unusual finding for APL. By sharing this observation, we emphasize the importance of a comprehensive approach in achieving an accurate and timely diagnosis of APL, including the integration of morphologic assessment, immunohistochemistry, flow cytometry, and molecular techniques.

P2/3, N=60, Not yet recruiting, The Affiliated People's Hospital of Ningbo University

This study highlights the potential of 3-APA analogs as effective cytotoxic agents in the treatment of APL. The compounds demonstrated significant apoptotic activity and altered gene expression, particularly in apoptosis regulation and oxidative stress pathways. These findings suggest that 3-APA analogs may serve as valuable candidates for future therapeutic development in APL treatment, warranting further research into their molecular mechanisms and clinical applicability.

Finally, we report the development of small-compounds potentially targeting ZMIZ1 with high binding affinity, selective on-target activity, and potent in vivo efficacy in both the murine AML model and AML organoids. Collectively, these findings uncover ZMIZ1 as a targetable epigenetic vulnerability in AML, underscoring its potential as a promising therapeutic target for differentiation-based treatment strategies.