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Phase I/II Trial of S64315 Plus Azacitidine in Acute Myeloid Leukaemia

Phase I/II, International, Multicentre, Open-label, Non-randomised, Non-comparative, Study Evaluating the Safety, Tolerability and Clinical Activity of Intravenously Administered S64315, a Selective Mcl-1 Inhibitor, in Combination With Azacitidine in Patients With Acute Myeloid Leukaemia (AML)

Status
Completed
Phases
Phase 1Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04629443
Enrollment
17
Registered
2020-11-16
Start date
2021-02-17
Completion date
2023-08-25
Last updated
2024-06-06

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

Conditions

Acute Myeloid Leukaemia

Keywords

Acute Myeloid Leukaemia, Oncology, Mcl-1 inhibitor, Azacitidine, Combination, Phase I/II, International, Safety, Maximum tolerated dose

Brief summary

The purpose of this study is to assess the safety, tolerability and clinical activity of the combination S64315 with azacitidine in patients with acute myeloid leukaemia.

Interventions

DRUGS 64315 (also referred as MIK665) and azacitidine

The combination treatment at the planned doses may be preceded by a 2-week Lead-In Dose period of S64315 (fixed dose) administered via intravenous (IV) infusion over at least 2 hours. During the combination treatment period S64315 will be administered according to a dose escalation scheme starting at 50 mg up to 250 mg might be explored. The schedule will be a 21-day cycle with a weekly regimen for S64315 and a daily regimen of azacitidine administered at 75 mg/m² via subcutaneous (SC) injection for 7 days from D1 to D7 of each cycle followed by a rest period of 21 days.

Sponsors

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

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

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

Inclusion criteria

1. Patients aged ≥ 18 years 2. Patients with cytologically confirmed and documented de novo, secondary or therapy-related AML as defined by World Health Organization 2016 classification (Arber, 2016) excluding acute promyelocytic leukaemia (APL, French American-British M3 classification) with: relapsed or refractory disease and without established alternative therapy, or secondary to MyeloDysplastic Syndrome and without established alternative therapy or, newly diagnosed AML, not previously treated for AML and who are not candidate for intensive chemotherapy due to age or comorbidities. 3. Eastern Cooperative Oncology Group (ECOG) performance status ≤ 2. 4. Adequate haematological, renal and hepatic functions based on the last assessment performed within 7 days prior to the first Investigational Medicinal Product administration.

Exclusion criteria

1. Previous myeloproliferative syndrome (MPS). 2. Patients previously treated with any Mcl-1 inhibitor. 3. Patients who have not recovered from toxicity of previous anticancer therapy, including Grade ≥ 2 toxicity (except alopecia of any grade) according to the National Cancer Institute Common Terminology Criteria for Adverse Event (NCI CTCAE) version 5.0, prior to the first IMP administration. 4. Severe or uncontrolled active acute or chronic infection. 5. Uncontrolled hepatitis B or C infection. 6. Known carriers of HIV antibodies, history of significant liver disease, active acute or chronic pancreatitis, active central nervous system disease. 7. Troponin \> ULN (Upper Limit of reference range) or Troponin T \> ULN if Troponin I cannot be assessed. 8. Clinically significant cardiac dysfunction (including New York Heart Association class ≥II heart failure, Left Ventricular Ejection Fraction (LVEF) \< 50% as assessed by echocardiography (ECHO) or Multi-Gated Acquisition (MUGA) scan). 9. QT prolongation defined as QTc (QT interval corrected for heart rate) interval (corrected with Fridericia's formula) \> 450 ms for males and \> 470 ms for females, obtained from triplicate 12-lead ECG. 10. Any factors that increase the risk of QTc prolongation or risk of arrhythmic events such as heart failure, hypokalaemia, congenital long QT syndrome, family history of long QT syndrome or unexplained sudden death under 40 years of age. 11. Uncontrolled arterial hypertension (systolic blood pressure (SBP) \> 150 mmHg or diastolic blood pressure (DBP) \> 95 mmHg).

Design outcomes

Primary

MeasureTime frameDescription
Dose Intensity for Azacitidine (Phase I - Dose Escalation)Through study completion, an average of 6 months
Number of Serious Adverse Event (SAEs) and Fatal SAEs (Phase I - Dose Escalation)Day -13 up to 30 calendar days after the patient's last study visit (an average of 6 months)Incidence and severity of SAEs according to NCI CTCAE v5.0
Number of Participants With Dose Interruptions (Phase I - Dose Escalation)Through study completion, an average of 6 months
Number of Participants With Dose Reductions (Phase I - Dose Escalation)Through study completion, an average of 6 months
Dose Intensity for S64315 (Phase I - Dose Escalation)Through study completion, an average of 6 months
Dose Limiting Toxicity (DLT) (Phase I - Dose Escalation)Day -13 to Cycle 1 Day 28 (each cycle is 28 days)Incidence of DLTs starting from the Lead-In Dose period to the end of the first cycle of treatment of S64315 in combination with azacitidine.
Number of Adverse Events (AEs) and Severe AEs (Phase I - Dose Escalation)an average of 6 monthsIncidence and severity of AEs according to NCI CTCAE v5.0

Secondary

MeasureTime frameDescription
Assess Anti-leukemic Activity of S64315 in Combinaison With Azacitidine (Phase I - Dose Escalation)Through study completion, an average of 6 monthsDuration of response (DOR)
Pharmacokinetic Profile of S64315 Administered in Combination With Azacitidine in Plasma: Area Under the Curve (AUC) (Phase I - Dose Escalation)At Cycle 1 Day 2 and Cycle 1 Day 9 (each cycle is 28 days)
Pharmacokinetic Profile of S64315 Administered in Combination With Azacitidine in Plasma: Maximum Concentration (Cmax) (Phase I - Dose Escalation)At Cycle 1 Day 2 and Cycle 1 Day 9 (each cycle is 28 days)
Assess Anti-leukemic Activity of S64315 in Combination With Azacitidine (Phase I - Dose Escalation)Through study completion, an average of 6 monthsOverall survival (OS)

Countries

Australia, France, Spain, United States

Participant flow

Participants by arm

ArmCount
50 mg S64315 (Also Referred as MIK665) With Azacitidine
S 64315 (also referred as MIK665) and azacitidine: The combination treatment at the planned doses may be preceded by a 2-week Lead-In Dose period of S64315 (fixed dose) administered via intravenous (IV) infusion over at least 2 hours. During the combination treatment period S64315 will be administered according to a dose escalation scheme starting at 50 mg up to 250 mg might be explored. The schedule will be a 21-day cycle with a weekly regimen for S64315 and a daily regimen of azacitidine administered at 75 mg/m² via subcutaneous (SC) injection for 7 days from D1 to D7 of each cycle followed by a rest period of 21 days.
5
100 mg S64315 (Also Referred as MIK665) With Azacitidine
S 64315 (also referred as MIK665) and azacitidine: The combination treatment at the planned doses may be preceded by a 2-week Lead-In Dose period of S64315 (fixed dose) administered via intravenous (IV) infusion over at least 2 hours. During the combination treatment period S64315 will be administered according to a dose escalation scheme starting at 50 mg up to 250 mg might be explored. The schedule will be a 21-day cycle with a weekly regimen for S64315 and a daily regimen of azacitidine administered at 75 mg/m² via subcutaneous (SC) injection for 7 days from D1 to D7 of each cycle followed by a rest period of 21 days.
7
190 mg S64315 (Also Referred as MIK665) With Azacitidine
S 64315 (also referred as MIK665) and azacitidine: The combination treatment at the planned doses may be preceded by a 2-week Lead-In Dose period of S64315 (fixed dose) administered via intravenous (IV) infusion over at least 2 hours. During the combination treatment period S64315 will be administered according to a dose escalation scheme starting at 50 mg up to 250 mg might be explored. The schedule will be a 21-day cycle with a weekly regimen for S64315 and a daily regimen of azacitidine administered at 75 mg/m² via subcutaneous (SC) injection for 7 days from D1 to D7 of each cycle followed by a rest period of 21 days.
5
Total17

Withdrawals & dropouts

PeriodReasonFG000FG001FG002
Overall StudyAdverse Event212
Overall StudyPhysician Decision130
Overall StudyProgressive Disease233

Baseline characteristics

Characteristic50 mg S64315 (Also Referred as MIK665) With Azacitidine100 mg S64315 (Also Referred as MIK665) With Azacitidine190 mg S64315 (Also Referred as MIK665) With AzacitidineTotal
Age, Continuous71.6 years
STANDARD_DEVIATION 8.3
60.1 years
STANDARD_DEVIATION 14.1
64.8 years
STANDARD_DEVIATION 12.9
64.9 years
STANDARD_DEVIATION 12.5
Age, Customized
18 to less then 65
1 Participants4 Participants2 Participants7 Participants
Age, Customized
65 to less then 85
4 Participants3 Participants3 Participants10 Participants
Race/Ethnicity, Customized
Hispanic or Latino
0 Participants1 Participants2 Participants3 Participants
Race/Ethnicity, Customized
Not Hispanic or Latino
5 Participants6 Participants3 Participants14 Participants
Race/Ethnicity, Customized
White
5 Participants7 Participants5 Participants17 Participants
Sex: Female, Male
Female
1 Participants3 Participants3 Participants7 Participants
Sex: Female, Male
Male
4 Participants4 Participants2 Participants10 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
2 / 55 / 72 / 5
other
Total, other adverse events
5 / 56 / 75 / 5
serious
Total, serious adverse events
5 / 57 / 74 / 5

Outcome results

Primary

Dose Intensity for Azacitidine (Phase I - Dose Escalation)

Time frame: Through study completion, an average of 6 months

Population: One participant in the 100 mg arm did not receive azacitidine and therefore was not eligible for analysis.

ArmMeasureValue (MEAN)Dispersion
50 mg S64315 (Also Referred as MIK665) With AzacitidineDose Intensity for Azacitidine (Phase I - Dose Escalation)23.5 mg/m^2/weekStandard Deviation 17
100 mg S64315 (Also Referred as MIK665) With AzacitidineDose Intensity for Azacitidine (Phase I - Dose Escalation)18.8 mg/m^2/weekStandard Deviation 0.3
190 mg S64315 (Also Referred as MIK665) With AzacitidineDose Intensity for Azacitidine (Phase I - Dose Escalation)22.9 mg/m^2/weekStandard Deviation 9.1
Primary

Dose Intensity for S64315 (Phase I - Dose Escalation)

Time frame: Through study completion, an average of 6 months

ArmMeasureValue (MEAN)Dispersion
50 mg S64315 (Also Referred as MIK665) With AzacitidineDose Intensity for S64315 (Phase I - Dose Escalation)41.0 mg/weekStandard Deviation 2.7
100 mg S64315 (Also Referred as MIK665) With AzacitidineDose Intensity for S64315 (Phase I - Dose Escalation)60.3 mg/weekStandard Deviation 19.8
190 mg S64315 (Also Referred as MIK665) With AzacitidineDose Intensity for S64315 (Phase I - Dose Escalation)119.6 mg/weekStandard Deviation 19.9
Primary

Dose Limiting Toxicity (DLT) (Phase I - Dose Escalation)

Incidence of DLTs starting from the Lead-In Dose period to the end of the first cycle of treatment of S64315 in combination with azacitidine.

Time frame: Day -13 to Cycle 1 Day 28 (each cycle is 28 days)

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
50 mg S64315 (Also Referred as MIK665) With AzacitidineDose Limiting Toxicity (DLT) (Phase I - Dose Escalation)0 Participants
100 mg S64315 (Also Referred as MIK665) With AzacitidineDose Limiting Toxicity (DLT) (Phase I - Dose Escalation)1 Participants
190 mg S64315 (Also Referred as MIK665) With AzacitidineDose Limiting Toxicity (DLT) (Phase I - Dose Escalation)1 Participants
Primary

Number of Adverse Events (AEs) and Severe AEs (Phase I - Dose Escalation)

Incidence and severity of AEs according to NCI CTCAE v5.0

Time frame: an average of 6 months

ArmMeasureGroupValue (NUMBER)
50 mg S64315 (Also Referred as MIK665) With AzacitidineNumber of Adverse Events (AEs) and Severe AEs (Phase I - Dose Escalation)Total Number of AEs72 Events
50 mg S64315 (Also Referred as MIK665) With AzacitidineNumber of Adverse Events (AEs) and Severe AEs (Phase I - Dose Escalation)Number of Severe AEs39 Events
100 mg S64315 (Also Referred as MIK665) With AzacitidineNumber of Adverse Events (AEs) and Severe AEs (Phase I - Dose Escalation)Total Number of AEs56 Events
100 mg S64315 (Also Referred as MIK665) With AzacitidineNumber of Adverse Events (AEs) and Severe AEs (Phase I - Dose Escalation)Number of Severe AEs22 Events
190 mg S64315 (Also Referred as MIK665) With AzacitidineNumber of Adverse Events (AEs) and Severe AEs (Phase I - Dose Escalation)Total Number of AEs41 Events
190 mg S64315 (Also Referred as MIK665) With AzacitidineNumber of Adverse Events (AEs) and Severe AEs (Phase I - Dose Escalation)Number of Severe AEs13 Events
Primary

Number of Participants With Dose Interruptions (Phase I - Dose Escalation)

Time frame: Through study completion, an average of 6 months

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
50 mg S64315 (Also Referred as MIK665) With AzacitidineNumber of Participants With Dose Interruptions (Phase I - Dose Escalation)Dose delay3 Participants
50 mg S64315 (Also Referred as MIK665) With AzacitidineNumber of Participants With Dose Interruptions (Phase I - Dose Escalation)Dose interruption4 Participants
100 mg S64315 (Also Referred as MIK665) With AzacitidineNumber of Participants With Dose Interruptions (Phase I - Dose Escalation)Dose delay2 Participants
100 mg S64315 (Also Referred as MIK665) With AzacitidineNumber of Participants With Dose Interruptions (Phase I - Dose Escalation)Dose interruption4 Participants
190 mg S64315 (Also Referred as MIK665) With AzacitidineNumber of Participants With Dose Interruptions (Phase I - Dose Escalation)Dose delay1 Participants
190 mg S64315 (Also Referred as MIK665) With AzacitidineNumber of Participants With Dose Interruptions (Phase I - Dose Escalation)Dose interruption3 Participants
Primary

Number of Participants With Dose Reductions (Phase I - Dose Escalation)

Time frame: Through study completion, an average of 6 months

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
50 mg S64315 (Also Referred as MIK665) With AzacitidineNumber of Participants With Dose Reductions (Phase I - Dose Escalation)1 Participants
100 mg S64315 (Also Referred as MIK665) With AzacitidineNumber of Participants With Dose Reductions (Phase I - Dose Escalation)0 Participants
190 mg S64315 (Also Referred as MIK665) With AzacitidineNumber of Participants With Dose Reductions (Phase I - Dose Escalation)0 Participants
Primary

Number of Serious Adverse Event (SAEs) and Fatal SAEs (Phase I - Dose Escalation)

Incidence and severity of SAEs according to NCI CTCAE v5.0

Time frame: Day -13 up to 30 calendar days after the patient's last study visit (an average of 6 months)

ArmMeasureGroupValue (NUMBER)
50 mg S64315 (Also Referred as MIK665) With AzacitidineNumber of Serious Adverse Event (SAEs) and Fatal SAEs (Phase I - Dose Escalation)Total Number of SAEs16 Events
50 mg S64315 (Also Referred as MIK665) With AzacitidineNumber of Serious Adverse Event (SAEs) and Fatal SAEs (Phase I - Dose Escalation)Fatal SAEs2 Events
100 mg S64315 (Also Referred as MIK665) With AzacitidineNumber of Serious Adverse Event (SAEs) and Fatal SAEs (Phase I - Dose Escalation)Total Number of SAEs14 Events
100 mg S64315 (Also Referred as MIK665) With AzacitidineNumber of Serious Adverse Event (SAEs) and Fatal SAEs (Phase I - Dose Escalation)Fatal SAEs2 Events
190 mg S64315 (Also Referred as MIK665) With AzacitidineNumber of Serious Adverse Event (SAEs) and Fatal SAEs (Phase I - Dose Escalation)Total Number of SAEs5 Events
190 mg S64315 (Also Referred as MIK665) With AzacitidineNumber of Serious Adverse Event (SAEs) and Fatal SAEs (Phase I - Dose Escalation)Fatal SAEs0 Events
Secondary

Assess Anti-leukemic Activity of S64315 in Combinaison With Azacitidine (Phase I - Dose Escalation)

Disease-free survival (DFS)

Time frame: Through study completion, an average of 6 months

Population: In the context of the premature study discontinuation due to strategic reasons, no statistical analyses for this outcome measure was completed since data was not collected.

Secondary

Assess Anti-leukemic Activity of S64315 in Combinaison With Azacitidine (Phase I - Dose Escalation)

Best overall response (BOR)

Time frame: Through study completion, an average of 6 months

Population: In the context of the premature study discontinuation due to strategic reasons, no statistical analyses for this outcome measure was completed since data was not collected.

Secondary

Assess Anti-leukemic Activity of S64315 in Combinaison With Azacitidine (Phase I - Dose Escalation)

Progression-free survival (PFS)

Time frame: Through study completion, an average of 6 months

Population: In the context of the premature study discontinuation due to strategic reasons, no statistical analyses for this outcome measure was completed since data was not collected.

Secondary

Assess Anti-leukemic Activity of S64315 in Combinaison With Azacitidine (Phase I - Dose Escalation)

Duration of response (DOR)

Time frame: Through study completion, an average of 6 months

Population: In the context of the premature study discontinuation due to strategic reasons, no statistical analyses for this outcome measure was completed since data was not collected.

Secondary

Assess Anti-leukemic Activity of S64315 in Combination With Azacitidine (Phase I - Dose Escalation)

Overall survival (OS)

Time frame: Through study completion, an average of 6 months

Population: In the context of the premature study discontinuation due to strategic reasons, no statistical analyses for this outcome measure was completed since data was not collected.

Secondary

Pharmacokinetic Profile of S64315 Administered in Combination With Azacitidine in Plasma: Area Under the Curve (AUC) (Phase I - Dose Escalation)

Time frame: At Cycle 1 Day 2 and Cycle 1 Day 9 (each cycle is 28 days)

Population: For Cycle 1 Day 9 in the 50 mg S64315 arm, the blood sample was collected from the same site of IV infusion and therefore, no descriptive statistics were derived due to unreliable PK Data. The other cohorts had less patients analyzed due to missing patient data.

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
50 mg S64315 (Also Referred as MIK665) With AzacitidinePharmacokinetic Profile of S64315 Administered in Combination With Azacitidine in Plasma: Area Under the Curve (AUC) (Phase I - Dose Escalation)Cycle 1 Day 21588 ng.h/mLGeometric Coefficient of Variation 2.9
100 mg S64315 (Also Referred as MIK665) With AzacitidinePharmacokinetic Profile of S64315 Administered in Combination With Azacitidine in Plasma: Area Under the Curve (AUC) (Phase I - Dose Escalation)Cycle 1 Day 21929 ng.h/mLGeometric Coefficient of Variation 71
100 mg S64315 (Also Referred as MIK665) With AzacitidinePharmacokinetic Profile of S64315 Administered in Combination With Azacitidine in Plasma: Area Under the Curve (AUC) (Phase I - Dose Escalation)Cycle 1 Day 92235 ng.h/mL
190 mg S64315 (Also Referred as MIK665) With AzacitidinePharmacokinetic Profile of S64315 Administered in Combination With Azacitidine in Plasma: Area Under the Curve (AUC) (Phase I - Dose Escalation)Cycle 1 Day 27393 ng.h/mLGeometric Coefficient of Variation 38
190 mg S64315 (Also Referred as MIK665) With AzacitidinePharmacokinetic Profile of S64315 Administered in Combination With Azacitidine in Plasma: Area Under the Curve (AUC) (Phase I - Dose Escalation)Cycle 1 Day 98584 ng.h/mL
Secondary

Pharmacokinetic Profile of S64315 Administered in Combination With Azacitidine in Plasma: Maximum Concentration (Cmax) (Phase I - Dose Escalation)

Time frame: At Cycle 1 Day 2 and Cycle 1 Day 9 (each cycle is 28 days)

Population: For Cycle 1 Day 9 in the 50 mg S64315 arm, the blood sample was collected from the same site of IV infusion and therefore, no descriptive statistics were derived due to unreliable PK Data. The other cohorts had less patients analyzed due to missing patient data.

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
50 mg S64315 (Also Referred as MIK665) With AzacitidinePharmacokinetic Profile of S64315 Administered in Combination With Azacitidine in Plasma: Maximum Concentration (Cmax) (Phase I - Dose Escalation)Cycle 1 Day 2923 ng/mLGeometric Coefficient of Variation 16
100 mg S64315 (Also Referred as MIK665) With AzacitidinePharmacokinetic Profile of S64315 Administered in Combination With Azacitidine in Plasma: Maximum Concentration (Cmax) (Phase I - Dose Escalation)Cycle 1 Day 21021 ng/mLGeometric Coefficient of Variation 59
100 mg S64315 (Also Referred as MIK665) With AzacitidinePharmacokinetic Profile of S64315 Administered in Combination With Azacitidine in Plasma: Maximum Concentration (Cmax) (Phase I - Dose Escalation)Cycle 1 Day 91850 ng/mL
190 mg S64315 (Also Referred as MIK665) With AzacitidinePharmacokinetic Profile of S64315 Administered in Combination With Azacitidine in Plasma: Maximum Concentration (Cmax) (Phase I - Dose Escalation)Cycle 1 Day 23646 ng/mLGeometric Coefficient of Variation 36
190 mg S64315 (Also Referred as MIK665) With AzacitidinePharmacokinetic Profile of S64315 Administered in Combination With Azacitidine in Plasma: Maximum Concentration (Cmax) (Phase I - Dose Escalation)Cycle 1 Day 94520 ng/mL

Source: ClinicalTrials.gov · Data processed: Feb 10, 2026