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Safety and Efficacy of Tenalisib (RP6530) in Combination With Romidepsin in Patients With Relapsed/Refractory T-cell Lymphoma

An Open Label, Phase I/II Study to Evaluate the Safety and Efficacy of Tenalisib (RP6530), a Novel PI3K δ/γ Dual Inhibitor Given in Combination With a Histone Deacetylase (HDAC) Inhibitor, Romidepsin in Adult Patients With Relapsed/Refractory T-cell Lymphoma

Status
Completed
Phases
Phase 1Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03770000
Enrollment
33
Registered
2018-12-10
Start date
2019-03-12
Completion date
2021-05-14
Last updated
2022-10-28

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

Conditions

T Cell Lymphoma

Keywords

T cell Lymphoma, RP6530, Tenalisib, Romidepsin

Brief summary

To characterize safety, tolerability and to establish the maximum tolerated dose (MTD) of Tenalisib in combination with Romidepsin in patients with R/R T-cell lymphoma.

Interventions

Tenalisib, BID orally daily

DRUGRomidepsin

Romidepsin IV

Sponsors

Rhizen Pharmaceuticals SA
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SEQUENTIAL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

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

Inclusion criteria

1. Pathologically confirmed T-cell lymphomas at the enrolling institution. 2. Disease status as defined as relapsed or progressed patients who have received at least one systemic therapy. 3. The patients should have received NOT more than three prior systemic combination chemotherapies 4. PTCL patients must have measurable disease defined as at least one bidimensional measurable lesion with minimum measurement of \> 1.5 cm in the longest diameter. 5. Must have ECOG performance status ≤ 2 6. Adequate bone marrow, liver and renal function in line with below mentioned laboratory requirements. 1. Hemoglobin ≥8.0 g/dL 2. Absolute neutrophil count (ANC) ≥1,000/µL 3. Platelet count ≥75,000/μL 4. Total bilirubin ≤1.5 times the ULN (or ≤3 x ULN, if patient has Gilbert syndrome) 5. AST (SGOT) and ALT (SGPT) ≤ 3 x ULN; ≤ 5 ULN in case of liver involvement 6. Calculated creatinine clearance (CrCl) \> 50 ml/min by Cockcroft-Gault formula 7. Use of an effective means of contraception for women of childbearing potential and men with partners of childbearing potential. 8. Provide written informed consent prior to any study-specific screening procedures. 9. Willingness and capability to comply with the requirements of the study

Exclusion criteria

1. Patient receiving anticancer therapy including any investigational therapy ≤3 weeks or 5 half-lives (whichever is shorter) prior to C1D1. 2. Patient who discontinued prior therapy with PI3K inhibitors or HDAC inhibitors due to drug toxicity. 3. PTCL patients with Allo-SCT on active GVHD or immunosuppression therapy within 3 months prior to C1D1. CTCL patients with the history of Allo-SCT will be excluded. 4. Patient with medical conditions requiring the use of systemic immunosuppressive medications (\> 20 mg/day of prednisone or equivalent). 5. Severe bacterial, viral or mycotic infection requiring systemic treatment. 6. Known seropositive requiring anti-viral therapy for human immunodeficiency virus (HIV) infection. 7. Known seropositive requiring anti-viral therapy for hepatitis B virus (HBV) infection OR evidence of active hepatitis B infection as defined by detectable viral load if the antibody tests are positive.. 8. Known seropositive requiring anti-viral therapy for hepatitis c virus (HCV) infection OR patients with positive hepatitis C virus Ab. 9. Subjects with active EBV unrelated to underlying lymphoma (positive serology for anti- EBV VCA IgM antibody and negative for anti-EBV EBNA IgG antibody, or clinical manifestations and positive EBV PCR consistent with active EBV infection. 10. Subject with active CMV (positive serology for anti-CMV IgM antibody and negative for anti-CMV IgG antibody and positive CMV PCR with clinical manifestations consistent with active CMV infection) and requiring therapy. 11. Uncontrolled or significant cardiovascular disease including, but not limited to: * Congenital long QT syndrome. * QTcF interval \> 450 msec * Myocardial infarction or stroke/TIA within the past 6 months * Uncontrolled angina within the past 3 months * Significant ECG abnormalities including 2nd degree atrio- ventricular (AV) block (AV) block type II, 3rd degree AV block. * History of clinically significant arrhythmias (such as ventricular tachycardia, ventricular fibrillation or torsades de pointes), * History of other clinically significant heart disease (ie, cardiomyopathy, congestive heart failure with NYHA functional classification III-IV, pericarditis, significant pericardial effusion) * Requirement for daily supplemental oxygen therapy.

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants With and Without Dose Limiting Toxicities (DLTs)28 daysThe DLTs will be classified according to National Cancer Institute Common Terminology Criteria for Adverse Events (NCI-CTCAE) version 5.0.

Secondary

MeasureTime frameDescription
Overall Response Rate (ORR) With Tenalisib and Romidepsin Combination12 weeksOverall response (ORR) = CR + PR) was assessed according to the Lugano classification with PTCL and according to the modified Severity Weighted Assessment Tool (mSWAT)/Global assessment in patients with CTCL.
Duration of Response (DoR) With Tenalisib and Romidepsin Combination28 weeksThe time period from the response achieved in patient until the disease progression
Maximum Observed Plasma Concentration (Cmax)8 daysAssessment of Cmax in subjects treated with Tenalisib and Romidepsin combination. Blood samples for measurement of RP6530 plasma concentrations were collected pre-dose and at 0.5, 1, 2, 3, 4, 6, 8, 10, and 11 hours after dosing on Day 8 of the first cycle. Maximum (peak) drug concentration (Cmax in nanograms/milliliter) was estimated using Single-Dose data.

Countries

United States

Participant flow

Participants by arm

ArmCount
Dose escalation_Cohort 1
RP6530 was administered at 400 mg BID orally daily and Romidepsin was administered at 12 mg/m2, IV on day 1, 8 and 15
3
Dose escalation_Cohort 2
RP6530 was administered at 600 mg BID orally daily and Romidepsin was administered at 12 mg/m2, IV on day 1, 8 and 15
3
Dose escalation_Cohort 3
RP6530 was administered at 800 mg BID orally daily and Romidepsin was administered at 14 mg/m2, IV on day 1, 8 and 15
3
Dose expansion_Group 1 (PTCL)
RP6530 was administered at 800 mg BID orally daily and Romidepsin was administered at 14 mg/m2, IV on day 1, 8 and 15
12
Dose expansion_Group 2 (CTCL)
RP6530 was administered at 800 mg BID orally daily and Romidepsin was administered at 14 mg/m2, IV on day 1, 8 and 15
12
Total33

Withdrawals & dropouts

PeriodReasonFG000FG001FG002FG003FG004
Overall StudyPremature discontinuation due to PD00132

Baseline characteristics

CharacteristicDose escalation_Cohort 1TotalDose expansion_Group 2 (CTCL)Dose expansion_Group 1 (PTCL)Dose escalation_Cohort 3Dose escalation_Cohort 2
Age, Continuous69.79 years66.21 years69.67 years67.62 years49.03 years55.72 years
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
1 Participants2 Participants0 Participants1 Participants0 Participants0 Participants
Race (NIH/OMB)
Black or African American
0 Participants4 Participants2 Participants0 Participants2 Participants0 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
White
2 Participants27 Participants10 Participants11 Participants1 Participants3 Participants
Region of Enrollment
United States
3 participants33 participants12 participants12 participants3 participants3 participants
Sex: Female, Male
Female
0 Participants16 Participants7 Participants6 Participants2 Participants1 Participants
Sex: Female, Male
Male
3 Participants17 Participants5 Participants6 Participants1 Participants2 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
EG004
affected / at risk
deaths
Total, all-cause mortality
0 / 30 / 30 / 31 / 121 / 12
other
Total, other adverse events
3 / 33 / 33 / 312 / 1212 / 12
serious
Total, serious adverse events
1 / 31 / 30 / 31 / 122 / 12

Outcome results

Primary

Number of Participants With and Without Dose Limiting Toxicities (DLTs)

The DLTs will be classified according to National Cancer Institute Common Terminology Criteria for Adverse Events (NCI-CTCAE) version 5.0.

Time frame: 28 days

Population: DLT assessment performed in patients who participated in dose escalation phase; A toxicity will be considered dose-limiting if it occurs during the first cycle (4-weeks) of treatment with Tenalisib and Romidepsin combination and is considered related to combination.

ArmMeasureCategoryValue (COUNT_OF_PARTICIPANTS)
Dose escalation_Cohort 1Number of Participants With and Without Dose Limiting Toxicities (DLTs)No.of Participants with Dose Limiting Toxicities0 Participants
Dose escalation_Cohort 1Number of Participants With and Without Dose Limiting Toxicities (DLTs)No.of Participants without Dose Limiting Toxicities3 Participants
Dose escalation_Cohort 2Number of Participants With and Without Dose Limiting Toxicities (DLTs)No.of Participants with Dose Limiting Toxicities0 Participants
Dose escalation_Cohort 2Number of Participants With and Without Dose Limiting Toxicities (DLTs)No.of Participants without Dose Limiting Toxicities3 Participants
Dose escalation_Cohort 3Number of Participants With and Without Dose Limiting Toxicities (DLTs)No.of Participants with Dose Limiting Toxicities0 Participants
Dose escalation_Cohort 3Number of Participants With and Without Dose Limiting Toxicities (DLTs)No.of Participants without Dose Limiting Toxicities3 Participants
Dose expansion_Group 1 (PTCL)Number of Participants With and Without Dose Limiting Toxicities (DLTs)No.of Participants without Dose Limiting Toxicities0 Participants
Dose expansion_Group 1 (PTCL)Number of Participants With and Without Dose Limiting Toxicities (DLTs)No.of Participants with Dose Limiting Toxicities0 Participants
Dose expansion_Group 2 (CTCL)Number of Participants With and Without Dose Limiting Toxicities (DLTs)No.of Participants with Dose Limiting Toxicities0 Participants
Dose expansion_Group 2 (CTCL)Number of Participants With and Without Dose Limiting Toxicities (DLTs)No.of Participants without Dose Limiting Toxicities0 Participants
Secondary

Duration of Response (DoR) With Tenalisib and Romidepsin Combination

The time period from the response achieved in patient until the disease progression

Time frame: 28 weeks

Population: Duration of Response (DoR) is defined as the time when the measurement criteria are first met for PR or CR (whichever is reported first) until the date of documented disease progression or death. Overall number of Participants analyzed for DoR will be the participants who met response as CR or PR

ArmMeasureValue (MEDIAN)
Dose escalation_Cohort 1Duration of Response (DoR) With Tenalisib and Romidepsin Combination151 days
Dose escalation_Cohort 2Duration of Response (DoR) With Tenalisib and Romidepsin Combination151 days
Dose expansion_Group 1 (PTCL)Duration of Response (DoR) With Tenalisib and Romidepsin Combination151 days
Dose expansion_Group 2 (CTCL)Duration of Response (DoR) With Tenalisib and Romidepsin Combination114 days
Secondary

Maximum Observed Plasma Concentration (Cmax)

Assessment of Cmax in subjects treated with Tenalisib and Romidepsin combination. Blood samples for measurement of RP6530 plasma concentrations were collected pre-dose and at 0.5, 1, 2, 3, 4, 6, 8, 10, and 11 hours after dosing on Day 8 of the first cycle. Maximum (peak) drug concentration (Cmax in nanograms/milliliter) was estimated using Single-Dose data.

Time frame: 8 days

Population: Peak Plasma Concentration (Cmax) of RP6530 at Cycle 1 day 8.

ArmMeasureValue (MEAN)Dispersion
Dose escalation_Cohort 1Maximum Observed Plasma Concentration (Cmax)1544.42 nanogram/millilitreStandard Deviation 1609.44
Dose escalation_Cohort 2Maximum Observed Plasma Concentration (Cmax)2152.17 nanogram/millilitreStandard Deviation 748.83
Dose escalation_Cohort 3Maximum Observed Plasma Concentration (Cmax)5791.11 nanogram/millilitreStandard Deviation 2426.44
Secondary

Overall Response Rate (ORR) With Tenalisib and Romidepsin Combination

Overall response (ORR) = CR + PR) was assessed according to the Lugano classification with PTCL and according to the modified Severity Weighted Assessment Tool (mSWAT)/Global assessment in patients with CTCL.

Time frame: 12 weeks

Population: Patients were considered for efficacy analysis as per protocol only if they had one post treatment efficacy assessment at C3D1

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Dose escalation_Cohort 1Overall Response Rate (ORR) With Tenalisib and Romidepsin Combination2 Participants
Dose escalation_Cohort 2Overall Response Rate (ORR) With Tenalisib and Romidepsin Combination2 Participants
Dose escalation_Cohort 3Overall Response Rate (ORR) With Tenalisib and Romidepsin Combination0 Participants
Dose expansion_Group 1 (PTCL)Overall Response Rate (ORR) With Tenalisib and Romidepsin Combination7 Participants
Dose expansion_Group 2 (CTCL)Overall Response Rate (ORR) With Tenalisib and Romidepsin Combination6 Participants

Source: ClinicalTrials.gov · Data processed: Feb 17, 2026