First-in-human Single Agent Study of SAR442257 in RRMM and RR-NHL


Primary Objective: To determine the maximum tolerated dose (MTD) of SAR442257 administered as a single agent in patients with relapsed and refractory multiple myeloma (RRMM) and refractory non-Hodgkin lymphoma (RR-NHL), and determine the recommended Phase 2 dose (RP2D) Secondary Objectives: – To characterize the safety profile of SAR442257 – To characterize the pharmacokinetics (PK) profile of SAR442257 – To evaluate the potential immunogenicity of SAR442257 – To assess preliminary evidence of antitumor activity

Full Title of Study: “An Open-label, First-in-human, Single Agent, Dose Escalation Study for the Evaluation of Safety, Pharmacokinetics, Pharmacodynamics and Anti-tumor Activity of SAR442257 in Patients With Relapsed and Refractory Multiple Myeloma and Relapsed and Refractory Non-Hodgkin Lymphoma”

Study Type

  • Study Type: Interventional
  • Study Design
    • Allocation: N/A
    • Intervention Model: Sequential Assignment
    • Primary Purpose: Treatment
    • Masking: None (Open Label)
  • Study Primary Completion Date: January 2024

Detailed Description

Study duration per participant is 2 months to estimated 16 months. Cycle lengths in this study are 27 days in Cycle 1 and 28 days for subsequent cycles as determined by totality of data collected thus far including PK/Pharmacodynamics (PD), safety and preliminary efficacy.


  • Drug: SAR442257
    • Pharmaceutical form: Sterile lyophilized powder for reconstitution Route of administration: Intravenous infusion

Arms, Groups and Cohorts

  • Experimental: Dose escalation
    • SAR442257 will be given intravenously with lead-in doses (LID) in the first-week, followed by twice weekly until week 4 (Cycle 1) and twice weekly for each subsequent cycle(s).

Clinical Trial Outcome Measures

Primary Measures

  • Determine maximum tolerated dose (MTD)
    • Time Frame: Baseline to estimated 4 weeks
    • MTD: defined as the highest dose level (DL) with highest probability of Investigational Medicinal Product (IMP)-related dose limiting toxicity (DLT) rate within the target range (16 to 33%) among dose levels with less than 0.25 probability of DLT rate above target (>33%)
  • Determine recommended Phase 2 dose (RP2D)
    • Time Frame: Baseline to estimated 4 months
    • RP2D: defined as the dose selected for the further single agent testing in the future study

Secondary Measures

  • Number of participants with AEs/SAEs/AESI
    • Time Frame: Baseline to 30 days after end of treatment
    • Incidence of treatment-emergent adverse events (AEs)/serious adverse events (SAEs)/ adverse events of special interest (AESIs)
  • Assessment of pharmacokinetic (PK) parameter: Cmax
    • Time Frame: through study completion (estimated 16 months)
    • Maximum concentration observed (Cmax)
  • Assessment of PK parameter: Ctrough
    • Time Frame: through study completion (estimated 16 months)
    • Concentration observed just before treatment administration during repeated dosing (Ctrough)
  • Assessment of PK parameter: AUC0-τ
    • Time Frame: up to 5 weeks
    • Area under the concentration versus time curve during a dosing interval (T) (AUC0-τ)
  • Incidence of anti-drug antibody (ADA)
    • Time Frame: Baseline to 30 days after end of treatment
    • Incidence of (ADA) against SAR442257
  • Overall response rate for RRMM
    • Time Frame: Baseline to 6 months
    • Overall response rate will be assessed using the International Myeloma Working Group (IMWG) 2016 criteria for patients with RRMM
  • Overall response rate for RR-NHL
    • Time Frame: Baseline to 6 months
    • Overall response rate will be assessed using the Response evaluation criteria in lymphoma (RECIL) 2017 criteria for patients with RR-NHL

Participating in This Clinical Trial

Inclusion criteria : Participant must be at least 18 years of age or of the country's legal age of majority if the legal age is >18 years old, at the time of signing the informed consent. Life expectancy of at least 12 weeks. Eastern Cooperative Oncology Group (ECOG) performance status ≤2. RRMM patients: must have received at least 3 prior lines of therapy including proteasome inhibitor (PI), immunomodulatory agent (IMiD), and anti-CD38 mAb; and must have received their last dose of prior anti-CD38 therapy within 12 months prior to the first dose of SAR442257; and must be refractory to anti-CD38 antibody (eg, daratumumab or isatuximab), characterized by progression within 60 days of the last dose of anti-CD38, regardless of which line it was given; and must be either relapsed or refractory to all established therapies with known clinical benefit in RRMM where approved and available, or are intolerant to those established therapies; based upon investigator's clinical judgement. and must not be candidates for regimens known to provide clinical benefit based upon investigator's clinical judgement. Patients with RRMM must have measurable disease as per the following:

  • Serum M protein ≥0.5 g/dL (≥5 g/L), or – Urine M protein ≥200 mg/24 hours, or – Serum free light chain (FLC) assay: involved FLC assay ≥10 mg/dL and an abnormal serum FLC ratio (<0.26 or >1.65). Patients with RR-NHL must be relapsed or refractory to all established therapies with known clinical benefit where approved and available, or are intolerant to those established therapies; based upon investigator's clinical judgement. Patients with RR-NHL must have measurable disease of at least one lesion ≥1.5 cm as documented by computed tomography (CT) scan, including the following subtype of disease: – Diffuse large B-cell lymphoma (DLBCL). – transformed follicular lymphoma (tFL), – follicular lymphoma (FL), – mantle cell lymphoma (MCL), – marginal zone lymphoma (MZL), – lymphoplasmacytic lymphoma, – small lymphocytic lymphoma (SLL). Patients with RR-NHL subtype T cell lymphoma (TCL): histopathologically confirmed mycosis fungoides or Sézary syndrome (cutaneous T cell lymphoma [CTCL] stage IIB or greater according to the European Organization for Research and Treatment of Cancer/International Society for Cutaneous Lymphomas [EORTC-ISCL] consensus classification) at study entry with progressive, persistent, or recurrent disease who have no available remaining standard therapeutic options (ie, refractory) as determined by the Investigator. Patients with lymphoma must have availability of lymphoma tissue for biomarker testing: either archived tissue or a fresh biopsy as a part of screening. On-treatment biopsy (Cycle 2 or beyond) is also expected if disease location is in a superficial lymph node. For post-CAR-T patients a fresh LN biopsy is expected if in a superficial node. For these patients tissue materials should be made available for analysis during the study. Excisional biopsy or resected tissue is required if clinically feasible; otherwise, core needle biopsy is acceptable. Fine needle aspirates are not acceptable. Patients with lymphoma must have a ≥50% left ventricular ejection fraction (LVEF) and no pericardial effusion, as measured by echocardiogram (ECHO). Contraceptive use by men or women should be consistent with local regulations regarding the methods of contraception for those participating in clinical studies. Exclusion criteria:

Diagnosed or treated for another malignancy within 3 years prior to enrollment, except for basal cell carcinoma or squamous cell carcinoma of the skin, an in-situ malignancy, superficial bladder carcinoma or low risk prostate cancer. Amyloidosis, leukemic manifestations of lymphoma, chronic lymphocytic leukemia and prolymphocytic leukemia. Known central nervous system (CNS) involvement by myeloma, lymphoma or other CNS disease such as neurodegenerative condition or CNS movement disorder. Has congestive heart failure (New York Heart Association) Grade ≥II; cardiomyopathy, active ischemia, or any other uncontrolled cardiac condition such as angina pectoris, clinically significant arrhythmia requiring therapy including anticoagulants, or clinically significant uncontrolled hypertension, QT interval corrected by the Fridericia method >480 msec (Grade ≥2). Acute myocardial infarction within 6 months before start of study treatment. Has active autoimmune disease including autoimmune hemolytic anemia, idiopathic thrombocytopenic purpura, inflammatory bowel syndrome, pneumonitis or any chronic condition requiring a higher corticosteroid systemic equivalent than prednisone 10 mg daily. Clinically-not controlled chronic or ongoing infectious disease requiring treatment at the time of first dose or within the 14 days before first dose. Active hepatitis A, B, and C as defined below: active hepatitis A (defined as positive IgM), active hepatitis B (defined as either positive hepatitis B surface antigen or positive hepatitis B viral DNA test above the lower limit of detection of the assay, and hepatitis B core antibodies), or C infection (defined as a known positive hepatitis C antibody result and known quantitative hepatitis C [HCV] ribonucleic acid [RNA] results greater than the lower limits of detection of the assay). Known positivity for Human Immunodeficiency Virus (HIV). Unresolved toxicities from prior anticancer therapy, defined as not having resolved to Common Terminology Criteria for Adverse Events (CTCAE) version 5.0 Grade 1 or to levels dictated in the eligibility criteria with the exception of Grade 1 peripheral neuropathy, alopecia or toxicities from prior anticancer therapy that are considered irreversible (defined as having been present and stable for >4 weeks) which may be allowed if they are not otherwise described in the exclusion criteria. Participant not suitable for participation, whatever the reason, as judged by the Investigator, including medical or clinical conditions, or participants potentially at risk of noncompliance to study procedures. Sensitivity to any of the study interventions, or components thereof, or drug or other allergy that, in the opinion of the Investigator, contraindicates participation in the study. The above information is not intended to contain all considerations relevant to a patient's potential participation in a clinical trial.

Gender Eligibility: All

Minimum Age: 18 Years

Maximum Age: N/A

Are Healthy Volunteers Accepted: No

Investigator Details

  • Lead Sponsor
    • Sanofi
  • Provider of Information About this Clinical Study
    • Sponsor
  • Overall Official(s)
    • Clinical Sciences & Operations, Study Director, Sanofi
  • Overall Contact(s)
    • Trial Transparency email recommended (Toll free number for US & Canada), 800-633-1610,

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