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Dose-escalation Study of Oral Administration of S 55746 in Patients With Chronic Lymphocytic Leukaemia and B-Cell Non-Hodgkin Lymphoma

Phase I Dose-escalation Study of Oral Administration of the Selective Bcl2 Inhibitor S 55746 in Patients With Refractory or Relapsed Chronic Lymphocytic Leukaemia and B-Cell Non-Hodgkin Lymphoma

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02920697
Enrollment
65
Registered
2016-09-30
Start date
2014-03-31
Completion date
2018-10-22
Last updated
2024-07-25

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

B-Cell Non-Hodgkin Lymphoma (NHL), Chronic Lymphocytic Leukaemia (CLL), Multiple Myeloma (MM)

Brief summary

The purpose of this study is to determine the safety profile and tolerability of S 55746 in patients with CLL, B-Cell NHL and MM, in terms of Dose-Limiting Toxicities (DLTs), Maximum Tolerated Dose (MTD) and determine the Recommended Phase 2 Dose (RP2D) through safety profile (DLT, MTD), PK profile, PD profile and preliminary efficacy.

Interventions

DRUGS 55746

S 55746, per os administration, from 50 to 1500 mg, once a day during a 21-day cycle. Participants will receive 21-day cycles of treatment until a discontinuation criterion is met.

Sponsors

ADIR, a Servier Group company
CollaboratorINDUSTRY
Institut de Recherches Internationales Servier
Lead SponsorOTHER

Study design

Allocation
NON_RANDOMIZED
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Women or men aged \>/=18 years * Patients with a measurable histologically confirmed Follicular Lymphoma (FL), Mantle Cell Lymphoma (MCL), Diffuse Large B-Cell Lymphoma (DLBCL), Small Lymphocytic Lymphoma (SLL) and Marginal Zone Lymphoma (MZL) (Arm A), or patients with an evaluable immunophenotypically confirmed CLL (Arm B), or patients with a measurable Multiple Myeloma t(11;14) (arm A expansion part) according to International Myeloma Working Group (IMWG) criteria * Relapsed after or refractory disease to standard treatments, and require treatment in the opinion of the investigator * Estimated life expectancy \> 12 weeks * World Health Organization (WHO) performance status 0-2 * Adequate bone marrow, renal and hepatic functions * No evidence or treatment for another malignancy within 2 years prior to study entry. Curatively treated non-melanoma skin cancer, in situ carcinoma, or cervical intraepithelial neoplasia is allowed Additional inclusion criteria for food interaction cohort: * B-cell NHL patients at low risk of tumour lysis syndrome (TLS) * Recent/concomitant treatment altering gastric pH

Exclusion criteria

* Previous treatment with a BH3 mimetic * Previous therapy for the studied disease within 3 weeks before first intake * Radioimmunotherapy, radiotherapy within 8 weeks before first intake * Major surgery within 3 weeks before first day of study drug dosing * Corticosteroids \>= 20 mg prednisone equivalent per day within 7 days before first intake * Anticoagulant oral drugs, aspirin \> 325 mg/day within 7 days prior to first S 55746 intake * Positive direct antiglobulin test (Coombs test) and haptoglobin below normal value * Prior allogenic stem cell transplant * Autologous stem cell transplant within 3 months before first intake * NHL patients diagnosed with Post-Transplant Lymphoproliferative Disease, Burkitt's lymphoma, Burkitt-like lymphoma, or lymphoblastic lymphoma/leukaemia * Human immunodeficiency virus (HIV) * Known acute or chronic hepatitis B or hepatitis C * Impaired cardiac function * Medications known to prolong corrected QT (QTc) interval * History or/ clinically suspicious for cancer- related Central Nervous System disease * Solitary extramedullary plasmacytoma * Laboratory Signs of TLS * Strong or moderate CYP3A4 inhibitors/inducers (treatment, food or drink products) * Treatment highly metabolized by the CYP3A4 or CYP2D6 and/or substrates with a narrow therapeutic index, multienzyme and/or OATP and/or P-gp substrates or herbal products. * Known hypersensitivity to rasburicase * Glucose-6-phosphate dehydrogenase (G6PD) deficiency and other cellular metabolic disorders known to cause haemolytic anaemia * Patients receiving proton pump inhibitor

Design outcomes

Primary

MeasureTime frameDescription
Maximum Tolerated Dose (MTD)During cycle 1 (21 days)The MTD is the highest drug dosage that is unlikely (\<25% posterior probability) to cause DLT in more than 33% of the treated patients in the first cycle of S 55746 treatment
Incidence of Adverse Events (AEs)From first dose until 30 days after the last dose intakeCharacterized by severity and seriousness of AEs, laboratory abnormalities and other safety parameters such as electrocardiogram (ECG) changes

Secondary

MeasureTime frame
The PK profile of S 55746: Maximal Concentration [Cmax]Pre-dose on Cycle 1 Day 1 (C1D1), C1D2, C1D3, C1D4, C1D5, C1D8, C1D9, C2D1 ; 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10-12 hours post-dose on C1D1, C1D8
Apoptotic activity from blood samplesAt Cycle 1(21 days)
Objective Response Rate (ORR)Up to study completion (maximum of 3 years)
Plasma concentration of S 55746Pre-dose on Cycle 1 Day 1 (C1D1), C1D2, C1D3, C1D4, C1D5, C1D8, C1D9, C2D1 ; 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10-12 hours post-dose on C1D1, C1D8
Duration of responseUp to study completion (maximum of 3 years)
Progression Free Survival (PFS)From date of inclusion until the date of progression or date of death, whichever occurs first, assessed up to study completion (maximum of 3 years)
Clinical Benefit Rate (CBR)Up to study completion (maximum of 3 years)
The pharmacokinetic (PK) profile of S 55746: Area Under the Curve [AUC]Pre-dose on Cycle 1 Day 1 (C1D1), C1D2, C1D3, C1D4, C1D5, C1D8, C1D9, C2D1 ; 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10-12 hours post-dose on C1D1, C1D8

Countries

Australia, France, Germany, Hungary, Poland, Singapore, South Korea, United Kingdom

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 26, 2026