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The researchers are doing this study is to find out whether ulixertinib is an effective and safe treatment for people with histiocytic neoplasms.
BDTX-4933-101 is a first-in-human, open-label, Phase 1 dose escalation and an expansion cohort study designed to evaluate the safety and tolerability, maximum tolerated dose (MTD) and the preliminary recommended Phase 2 dose (RP2D), and antitumor activity of BDTX-4933. The study population for the Dose Escalation part of the study comprises adults with recurrent advanced/metastatic non-small cell lung cancer (NSCLC) harboring KRAS non-G12C mutations, BRAF, or CRAF (RAF1) mutations, advanced/metastatic melanoma harboring BRAF or NRAS mutations, histiocytic neoplasms harboring BRAF, CRAF, or NRAS mutations, and other solid tumors harboring BRAF mutations. The study population for the Dose Expansion part of the study comprises adults with recurrent advanced/metastatic NSCLC harboring KRAS non-G12C mutations. All patients will self-administer BDTX-4933 orally in 28-day cycles until disease progression, toxicity, withdrawal of consent, or termination of the study.
The purpose of this study is to determine the uptake of the imaging agent \[68Ga\]-pentixafor with PET/CT scans in people with monoclonal gammopathy of undetermined significance (MGUS), smoldering multiple myeloma (SMM), and non-Hodgkin lymphoma (NHL), or you have histiocytic neoplasms (Langerhans cell histiocytosis (LCH), Erdheim-Chester disease (ECD) and/or Rosai-Dorfman disease (RDD).
The rare histiocytic disorders (RHDs) are characterized by the infiltration of one or more organs by non-LCH histiocytes. They can range from localized disease that resolves spontaneously, to progressive disseminated forms that can be sometimes life-threatening. Since they are extremely rare, there is limited understanding of their causes and best treatment options. Physicians, patients and parents of children with RHDs frequently consult members of the Histiocyte Society regarding the best management of these disorders. Very often, no specific recommendation can be made due to the lack of prospective outcome data, or even large retrospective case series. The creation of an international rare histiocytic disorders registry (IRHDR) could facilitate a uniform diagnosis of the RHDs, as well as the collection and analysis of the clinical, epidemiological, treatment and survival data of patients with RHD. The registry may also lead to future therapeutic recommendations, provide a framework for future clinical trials and create excellent research opportunities.