Researchers are looking for new ways to treat people with relapsed or refractory B-Cell Non-Hodgkin Lymphoma (B-NHL). B-cells are a type of white blood cells that make antibodies and help fight infections. Non-Hodgkin Lymphoma is a type of cancer in the lymphatic system causing enlarged lymph nodes and/or organs in belly or chest. Relapsed means a disease or condition comes back after treatment Refractory means a disease does not respond to treatment or stops responding to a treatment.
MK-1045, the study medicine, is designed to treat relapsed or refractory B-NHL. MK-1045 is an immunotherapy, which is a treatment that helps the immune system fight cancer.
This is the first study in which MK-1045 will be given to people. The goal of this study is to learn about:
* The safety of MK-1045 and how well people tolerate it. * The highest dose of MK-1045 that is well tolerated. * How well MK-1045 works to treat relapsed or refractory B-NHL.
None
Has relapsed or refractory B-cell Non-Hodgkin's lymphoma (B-NHL) with disease history meeting the following World Health Organization (WHO) diagnostic subtypes of B-NHL that are CD19-positive in pathologic immunohistochemistry test: diffuse large B-cell lymphoma (DLBCL), follicular lymphoma (FL) (Grade I to III), marginal zone lymphoma, lymphoplasmacytic lymphoma, mantle cell lymphoma, small lymphocytic lymphoma, and transformed large B-cell lymphoma (During the dose-escalation phase, participants, excluding those treated with Chimeric antigen receptor T-cell (CAR-T) who cannot provide proof of pathologic immunohistochemistry CD19 positivity but have previous proof of CD20 positivity may be considered for enrollment after communication with the sponsor)
Relapse is defined as the occurrence of progressive disease (PD) after complete response (CR) or partial response (PR) has been achieved after adequate treatment. Note: For DLBCL participants, relapse must occur after participants undergoing at least two lines of therapy; for other participants, they must undergo at least one line of therapy.
Refractory is defined as a situation that there is no standard of care available or that it is not applicable to use standard of care at this stage, including: Participants who are unresponsive to standard of care (e.g., monotherapy or combination therapy containing anti-CD20 monoclonal antibody) and whose best response to standard therapy is PD or stable disease (SD); Participants who are not eligible for autologous hematopoietic stem cell transplantation (ASCT) and have relapsed PD after receiving ASCT; Participants who have failed on chimeric antigen receptor T cell (CAR-T) immunotherapy, but the first dose of the study intervention must be at least 3 months after discontinuation of CAR-T therapy, and CD19 positive expression is still present in tumor tissue.
Has at least one evaluable tumor lesion per the Lugano 2014 criteria, i.e., a lymph node lesion > 15 mm in long diameter or an extranodal lesion > 10 mm in long diameter according to computed tomography (CT) cross-sectional imaging or magnetic resonance imaging (MRI)
Sequential
MK-1045
DrugIV infusion
Number of Participants who Experience a Dose-limiting Toxicity (DLT)
DLT are any of the following drug related (DR) investigator-assessed adverse events: Grade 4 neutropenia that does not recover to Grade ≤ 2 after more than 5 days of supportive care including granulocyte colony-stimulating factor (G-CSF), or ≥ Grade 3 febrile neutropenia; Grade 4 platelet (PLT) decreased, or Grade 3 PLT decreased with bleeding; Grade 4 anemia. Grade 4 non-hematologic toxicity; Grade 3 non-hematologic toxicity that does not recover to Grade ≤ 2 within 3 days after best supportive care (excluding simple laboratory abnormalities without clinical significance as assessed by the investigator). Participants with ≥ Grade 3 tumor lysis syndrome who recover to ≤ Grade 2 within 14 days after optimal supportive therapy will be excluded from the definition of DLT. A DLT was also any other toxic reactions requiring permanent discontinuation of the study intervention.
Number of Participants who Experience an Adverse Event (AE)
An AE is defined as any untoward medical event that occurs after a participant receives the investigational drug, which may be manifested as symptoms, signs, diseases, or laboratory abnormalities, but may not necessarily have a causal relationship with the study intervention. The number of participants who experience an AE will be reported.
Number of Participants who Experience a Serious Adverse Events (SAE)
An SAE refers to an untoward medical occurrence such as death, life-threatening event, permanent or serious disability or loss of function, need for hospitalization or prolongation of hospitalization after the participant receives the intervention, and congenital abnormalities or birth defects. The number of participants who experience a SAE will be reported.
Number of Participants who Experience a Drug-related Adverse Event (DRAE)
An AE is defined as any untoward medical event that occurs after a participant receives the investigational drug, which may be manifested as symptoms, signs, diseases, or laboratory abnormalities, but may not necessarily have a causal relationship with the study intervention. A DRAE is defined as an AE definitely related, probably related, or possibly related to the study intervention. The number of participants who have experienced a DRAE will be reported.
Mean Change in Serum MK-1045 Concentration After Administration
Blood samples will be collected to determine the mean change from baseline in serum concentration of MK-1045.
Area Under the Concentration-time Curve (AUC) of MK-1045
Blood samples will be collected to determine the AUC of MK-1045 in plasma.
Area Under the Concentration-time Curve from Time 0 to 168 Hours Post Dose (AUC0-168) of MK-1045
Blood samples will be collected to determine the AUC0-168 of MK-1045 in plasma.
Area Under the Concentration-time Curve from Time 0 to Last Quantifiable Concentration Post Dose (AUC0-last) of MK-1045
Blood samples will be collected to determine the AUC0-last of MK-1045 in plasma.
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