Acute Promyelocytic Leukemia

P3, N=150, Recruiting, Quetzal Therapeutics

P3, N=224, Recruiting, First Affiliated Hospital Xi'an Jiaotong University

When interpreted together with the in silico analyses performed on AML patient datasets, these results support the rationale for future validation in APL-oriented models carrying the PML::RARα fusion, the disease-defining oncogenic driver generated by the t(15;17) translocation that blocks myeloid differentiation. However, the in silico and in vitro datasets were not formally integrated at the patient level, and these functional results should be considered exploratory.

Despite prompt initiation of all-trans retinoic acid and arsenic trioxide therapy, she developed worsening respiratory distress and neurological deterioration, succumbing within 70 hours of admission...The optimal management strategies remain undefined, particularly for CNS-directed therapy. This case underscores the importance of considering extramedullary involvement in APL patients with atypical or rapidly progressive presentations.

This study demonstrated that piperine at 20 mg/kg orally was protective in arsenic trioxide-induced cardiotoxicity in an experimental rat model. This study is the first to combine serum biomarkers and ECG analysis to demonstrate piperine's cardioprotective role. It may have clinical relevance in exploring the potential of piperine to reduce arsenic trioxide-induced cardiotoxicity.

Notably, recent phenotypic screening studies identified Triciribine (TCN), an AKT inhibitor, as a differentiation inducer in AML cells...However, differentiation therapy outside APL has shown variable and often incomplete clinical success, frequently limited by partial maturation and context-dependent responses. Together, these approaches reveal novel therapeutic vulnerabilities in AML and support the development of differentiation-based strategies for a broader range of patients.

He underwent haploidentical transplantation using post-transplant cyclophosphamide (PTCy) after conventional chemotherapy and maintained long-term remission. This case highlights the importance of a morphological diagnosis and allogeneic hematopoietic stem cell transplantation (allo-HSCT) in APL with t(11;17)(q23.2;q21.2).

BP is an effective adjunct to ATO therapy, counteracting gut dysbiosis, intestinal damage, and the immune microenvironment while synergistically improving antileukemic efficacy. Targeting the gut-leukemia axis with BP represents a promising strategy for improving the precision and safety of APL treatment.

While differentiation therapy revolutionized acute promyelocytic leukemia (APL) with all-trans retinoic acid (ATRA) and arsenic trioxide (ATO), its extension into non-APL AML has been limited until recent targeted agents...IDH1/2 inhibitors (ivosidenib, enasidenib, olutasidenib) yield overall response rates (ORRs) of 30-94% in AML with DS in 10-19%. Menin inhibitors (revumenib, ziftomenib, enzomenib, bleximenib) achieve ORRs of 33-88% in KMT2A-rearranged or NPM1-mutated AML, with DS in 10-25% and QT prolongation as key toxicities. FLT3 inhibitors (gilteritinib, quizartinib) improve survival in FLT3-mutated AML with DS in 1-5%...Improved recognition of DS and rational combination approaches will be essential to maximize the therapeutic benefit. Future research should address mechanisms of resistance and biomarkers to achieve cures beyond APL.

P=N/A, N=202, Active, not recruiting, ECOG-ACRIN Cancer Research Group | Trial completion date: Dec 2025 --> Dec 2027

After treatment with all-trans retinoic acid and arsenic trioxide, he developed localized penile ulcers resistant to antibiotics. The ulcers improved following chemotherapy with daunorubicin and azacitidine. This case highlights penile ulcerations as a rare manifestation of leukemia cutis in APML, underscoring the importance of considering leukemic infiltration in differential diagnosis of genital ulcers when infectious causes are excluded.