International Proof of Concept Therapeutic Stratification Trial of Molecular Anomalies in Relapsed or Refractory HEMatological Malignancies in Children, Subprotocol C Ruxolitinib + Venetoclax + Dexamethasone + Cyclophosphamide and Cytarabine in Pediatric Patients With Relapsed or Refractory Hematological Malignancies

HEM-iSMART is a master protocol which investigates multiple investigational medicinal products in children, adolescents and young adults (AYA) with relapsed/refractory (R/R) ALL and LBL. Sub-protocol C is a phase I/II trial evaluating the safety and efficacy of ruxolitinib and venetoclax in combination with dexamethasone, cyclophosphamide and cytarabine in children and AYA with R/R ped ALL/LBL whose tumor present with alterations in the IL7R/JAK-STAT pathway.

Start Date01 Oct 2024

Sponsor / Collaborator

Princess Maxima Centre For Pediatric Oncology

NCT05751044

/ Not yet recruitingPhase 1/2IIT

International Proof of Concept Therapeutic Stratification Trial of Molecular Anomalies in Relapsed or Refractory HEMatological Malignancies in Children, Sub-protocol B Dasatinib + Venetoclax + Dexamethasone + Cyclophosphamide and Cytarabine in Pediatric Patients With Relapsed or Refractory Hematological Malignancies

HEM-iSMART is a master protocol which investigates multiple investigational medicinal products in children, adolescents and young adults (AYA) with relapsed/refractory (R/R) ALL and LBL. Sub-protocol B is a phase I/II trial evaluating the safety and efficacy of dasatinib + venetocolax in combination with dexamethasone + Cyclophosphamide and cytarabine in children and AYA with R/R ped ALL/LBL whose tumor present with alterations in the MAPK/SRC pathway.

Start Date01 Oct 2024

Sponsor / Collaborator

Princess Maxima Centre For Pediatric Oncology

NCT05658640

/ RecruitingPhase 1/2IIT

International Proof of Concept Therapeutic Stratification Trial of Molecular Anomalies in Relapsed or Refractory HEMatological Malignancies in Children, Subprotocol D: Trametinib + Dexamethasone + Cyclophosphamide and Cytarabine in Pediatric Patients with Relapsed or Refractory Hematological Malignancies

HEM-iSMART is a master protocol which investigates multiple investigational medicinal products in children, adolescents and young adults (AYA) with relapsed/refractory (R/R) ALL and LBL. Sub-protocol D is a phase I/II trial evaluating the safety and efficacy of trametinib in combination with dexamethasone, cyclophosphamide and cytarabine in children and AYA with R/R ped ALL/LBL whose tumor present with alterations in the RAS-RAF-MAPK pathway.

Start Date14 Nov 2023

Sponsor / Collaborator

Princess Maxima Centre For Pediatric Oncology

100 Clinical Results associated with Refractory T Lymphoblastic Lymphoma

100 Translational Medicine associated with Refractory T Lymphoblastic Lymphoma

0 Patents (Medical) associated with Refractory T Lymphoblastic Lymphoma

Literatures (Medical) associated with Refractory T Lymphoblastic Lymphoma

14 Sep 2024·Zhonghua xue ye xue za zhi = Zhonghua xueyexue zazhi

[Ruxolitinib combined with venetoclax and azacitidine in the treatment of refractory T-ALL patients with JAK1, JAK3, and STAT5B gene mutations: a case report and literature review].

Review

Author: Chen, B ; Xie, T ; Zhou, T ; Yang, Y G ; Ouyang, J ; Peng, M X ; Xu, P P ; Xu, Y Y ; Du, Y

Refractory acute T-lymphoblastic leukemia (T-ALL), which is characterized by a low sensitivity to conventional induction therapy and poor prognosis, poses significant challenges during treatment. This study reported a case of refractory T-ALL patient with mutations in the JAK1, JAK3, and STAT5B genes from Nanjing University's Gulou Hospital. Following an unsuccessful course of standard VDLP regimen chemotherapy, the treatment was modified to include ruxolitinib in combination with venetoclax and azacitidine. Subsequent to this therapy, the patient achieved bone marrow minimal residual disease (MRD) negativity. Notably, pleural effusion and mediastinal mass significantly improved the post-chest cavity infusion of dexamethasone combined with etoposide at the same stage. The patient also underwent allogeneic hematopoietic stem cell transplantation upon achieving bone marrow remission and was followed up until January 2024. Ruxolitinib combined with venetoclax and azacytidine has shown promising efficacy and safety in treating refractory T-ALL harboring the JAK1, JAK3, and STAT5B mutations, providing a novel therapeutic approach for such patients.

14 Nov 2023·Clinical Cancer Research

Integration of Genomic Sequencing Drives Therapeutic Targeting of PDGFRA in T-Cell Acute Lymphoblastic Leukemia/Lymphoblastic Lymphoma

Article

Author: Sulis, Maria Luisa ; Shukla, Neerav N ; Li, Yen Der ; Tsai, Jonathan ; Kim, Annette S ; Ocasio-Martinez, Nicole ; Bledsoe, Jacob ; Jacobson, Matthew P ; Gotti, Giacomo ; Harris, Marian H ; Magee, Jeffrey A ; Ebert, Benjamin L ; Kavanagh, Julia ; Sandoval-Perez, Angelica ; Dilig, Anthony ; Rangarajan, Amith Vikram ; Hatton, Charlie ; Tsai, Harrison K ; Cooper, Stacy L ; Khalid, Delan ; Robichaud, Amanda L ; Polonen, Petri ; Gillani, Riaz ; Dimitrov, Boris ; Mar, Brenton G ; Apsel Winger, Beth ; Li, Yuting ; Van Allen, Eliezer M ; Pikman, Yana ; Mullighan, Charles G ; Adhav, Asmani A ; Stegmaier, Kimberly ; Place, Andrew E ; Luskin, Marlise R ; Burke, Michael J ; Hijiya, Nobuko ; Gow, Sean ; Cooper, Todd M ; Paolino, Jonathan ; Tasian, Sarah K

AbstractPurpose:Patients with relapsed or refractory T-cell acute lymphoblastic leukemia (T-ALL) or lymphoblastic lymphoma (T-LBL) have limited therapeutic options. Clinical use of genomic profiling provides an opportunity to identify targetable alterations to inform therapy.Experimental Design:We describe a cohort of 14 pediatric patients with relapsed or refractory T-ALL enrolled on the Leukemia Precision-based Therapy (LEAP) Consortium trial (NCT02670525) and a patient with T-LBL, discovering alterations in platelet-derived growth factor receptor-α (PDGFRA) in 3 of these patients. We identified a novel mutation in PDGFRA, p.D842N, and used an integrated structural modeling and molecular biology approach to characterize mutations at D842 to guide therapeutic targeting. We conducted a preclinical study of avapritinib in a mouse patient-derived xenograft (PDX) model of FIP1L1-PDGFRA and PDGFRA p.D842N leukemia.Results:Two patients with T-ALL in the LEAP cohort (14%) had targetable genomic alterations affecting PDGFRA, a FIP1-like 1 protein/PDGFRA (FIP1L1-PDGFRA) fusion and a novel mutation in PDGFRA, p.D842N. The D842N mutation resulted in PDGFRA activation and sensitivity to tested PDGFRA inhibitors. In a T-ALL PDX model, avapritinib treatment led to decreased leukemia burden, significantly prolonged survival, and even cured a subset of mice. Avapritinib treatment was well tolerated and yielded clinical benefit in a patient with refractory T-ALL.Conclusions:Refractory T-ALL has not been fully characterized. Alterations in PDGFRA or other targetable kinases may inform therapy for patients with refractory T-ALL who otherwise have limited treatment options. Clinical genomic profiling, in real time, is needed for fully informed therapeutic decision making.

22 Jun 2023·Blood

How I treat newly diagnosed and refractory T-cell acute lymphoblastic lymphoma in children and young adults.

Article

Author: Ford, James B ; Si Lim, Stephanie J ; Hermiston, Michelle L

T-cell lymphoblastic lymphoma (T-LLy) and T-cell acute lymphoblastic leukemia (T-ALL) have historically been considered a spectrum of the same disease. However, recent evidence demonstrating differential responses to chemotherapy raise the possibility that T-LLy and T-ALL are distinct clinical and biologic entities. Here, we examine differences between the 2 diseases and use illustrative cases to highlight key recommendations on how to best treat patients with newly diagnosed and relapsed/refractory T-LLy. We discuss results of recent clinical trials incorporating use of nelarabine and bortezomib, choice of induction steroid, role of cranial radiotherapy, and risk stratification markers to identify patients at highest risk of relapse and to further refine current treatment strategies. Because prognosis for relapsed or refractory T-LLy patients is poor, we discuss ongoing investigations incorporating novel therapies, including immunotherapeutics, into upfront and salvage regimens and the role of hematopoietic stem cell transplantation.

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