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A Dose-finding Study of the Bromodomain (Brd) Inhibitor OTX015/ Birabresib (MK-8628) in Hematologic Malignancies (MK-8628-001)

A Phase I, Dose-finding Study of the Bromodomain (Brd) Inhibitor OTX015/MK-8628 in Haematological Malignancies

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01713582
Enrollment
141
Registered
2012-10-24
Start date
2012-12-14
Completion date
2017-01-20
Last updated
2021-01-26

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

Conditions

Acute Lymphoblastic Leukemia, Acute Myeloid Leukemia, Diffuse Large B-cell Lymphoma, Multiple Myeloma

Brief summary

The primary purpose of this study was to determine the recommended dose (RD) of birabresib (MK-8628) /OTX015 for further phase II studies, in participants with acute leukemia (AL) including acute myeloid leukemia (AML; de novo and secondary to a myelodysplastic syndrome) and acute lymphoblastic leukemia (ALL) or other hematologic malignancies (OHM) including diffuse large B cell lymphoma (DLBCL) and multiple myeloma (MM). The first phase of the study will be a dose escalation phase to determine the Phase II RD using dose-limiting toxicities (DLTs). Once the RD is determined, participants will be enrolled in an expansion phase at the RD to determine preliminary efficacy in AL and OHM cohorts. Participants received therapy in 21-day cycles until disease progression, intolerable toxicity, or treatment interruption for \>2 weeks due to toxicity.

Interventions

DRUGOTX015/Birabresib

OTX015/Birabresib 10 mg, 20 mg, or 40 mg capsules administered orally

Sponsors

Oncoethix GmbH, a subsidiary of Merck & Co., Inc. (Rahway, New Jersey USA)
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

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

Inclusion criteria

* Histologically or cytologically proven acute leukemias (AML or ALL) or hematologic malignancies (DLBCL or MM) using standard diagnosis criteria. Acute leukemia includes de novo and secondary to a pre-existing myelodysplastic syndrome, according to the World Health Organization 2008 classification. For DLBCL, an archived formaldehyde-fixed paraffin-embedded block must be available. * Has failed all standard therapies or for whom standard treatments are contra-indicated: * Acute leukemia participants: \<60 years old in second relapse or relapsing after allogeneic stem cell transplantation (aSCT) regardless of number of relapses; \>60 years old in first relapse with a disease-free interval (DFI) \<12 months or further relapse; irrespective of age, in participants relapsing after aSCT, the time elapsed since aSCT should be \>90 days; participants with B-cell ALL: Philadelphia chromosome positive (Ph+) must have received ≥2 lines of therapy, including 2 bcr-abl tyrosine-kinase (TK) inhibitors (among imatinib, nilotinib and dasatinib), or only 1 line including 1 TK inhibitor, if the relapse/refractoriness is associated with the detection of a resistance mutation to these inhibitors * DLBCL participants: Failed 2 standard lines of therapy (≥1 containing an anti-CD20 monoclonal antibody), or for whom such treatment is contra-indicated * MM participants: Adequately exposed to at least one alkylating agent, one corticosteroid, one immunomodulatory drug (IMiD) and bortezomib, or for whom such treatments are contra-indicated. * For participants with evaluable disease: * Advanced leukemia participants must have \>5% bone marrow blasts at study entry, without alternative causality (e.g. bone marrow regeneration) * DLBCL participants must have ≥1 non-irradiated tumor mass ≥15 mm (long axis of lymph node) or ≥10 mm (short axis of lymph node or extranodal lesions) on spiral computed tomography (CT)-scan. * MM participants must have ≥1 of the following: serum monoclonal component \>1 g/dL (IgG), or \>0.5 g/dL (IgA), or Bence-Jones (BJ) proteinuria \>200 mg/24h, or measurable plasmacytoma (not previously irradiated). * Life expectancy ≥3 months. * Eastern Cooperative Oncology Group (ECOG) performance status of 0 to 2. * Off previous therapy ≥3 weeks prior to first study drug administration with full recovery from any previous toxicities, except 1) hydroxyurea single agent of in combination (e.g. + 6-Mercaptopurine \[6MP\]) to control hyperleukocytosis, which should be stopped for ≥48 hours, and 2) rituximab, which should be stopped for ≥3 weeks. * Recovery from the non-hematologic toxic effects of prior treatment to grade ≤1, according to National Cancer Institute Common Toxicity Criteria (NCI-CTC) classification, except alopecia. * Adequate bone marrow function. * Adequate calculated creatinine clearance. * Adequate liver function tests. * Complete baseline disease assessment workup prior to first study drug administration.

Exclusion criteria

* History of prior malignancy other than those previously treated with a curative intent \>3 years ago and without relapse (any tumor) or basal cell skin cancer, in situ cervical cancer, superficial bladder cancer, or high grade intestinal polyps treated adequately, regardless of the DFI. * Pregnant or lactating women or women of childbearing potential not using adequate contraception. Male participants not using adequate contraception. * Peripheral cytopenias (i.e. auto-immune hemolytic anemia or thrombocytopenia). * Acute promyelocytic leukemia or with clinically uncontrolled (i.e. with bleeding) disseminated intravascular coagulation (DIC). * Chronic graft versus host disease (GVHD) or on immunosuppressive therapy for the control of GVHD. * Uncontrolled leptomeningeal disease. * Other tumor location necessitating an urgent therapeutic intervention (palliative care, surgery or radiation therapy), such as spinal cord compression, other compressive mass, uncontrolled painful lesion, bone fracture, etc. * Unable to swallow oral medications, or has gastrointestinal condition (e.g. malabsorption, resection) deemed to jeopardize intestinal absorption. * Other serious illness or medical conditions, which, in the investigator's opinion could hamper understanding of the study by the participants, participant's compliance to study treatment, participant's safety or interpretation of study results. These conditions include (but are not restricted to): 1. Congestive heart failure or angina pectoris except if medically controlled. Previous history of myocardial infarction within 1 year of study entry, uncontrolled hypertension or arrhythmias. 2. Existence of significant neurologic or psychiatric disorders impairing the ability to obtain consent. 3. Uncontrolled infection. 4. Known human immunodeficiency virus (HIV) positivity * Concurrent treatment with other experimental therapies or participation in another clinical trial within 30 days prior to first study drug administration. * Concurrent treatment or treatment within 30 days prior to first study drug administration with any other anticancer therapy, except hydroxyurea (+/- 6MP) to control hyperleukocytosis. * Concomitant treatment with corticosteroids except if chronic treatment with ≤30 mg of methylprednisolone daily or equivalent dose of other corticosteroids.

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants With Dose Limiting Toxicities (DLTs)Cycle 1 (Up to 21 days)A DLT was graded using the National Cancer Institute-Common Toxicity Criteria for Adverse Events (NCI-CTCAE) version 4.02 and defined as any of the following: grade 3 or 4 non-hematologic adverse events unless they were not optimally treated with supportive care; grade 3 or 4 asymptomatic laboratory abnormal values lasting \>7 days; prolonged grade 2 toxicity (lasting more than 2 weeks) leading to treatment interruption and/or dose reduction; pancytopenia with a hypocellular bone marrow and no marrow blasts lasting ≥6 weeks (AL participants); grade 3 neutropenia with fever or infection (OHM participants); grade 3 thrombocytopenia with bleeding (OHM participants); or grade 4 neutropenia or thrombocytopenia, regardless of symptoms and lasting ≥3 days (OHM participants).

Secondary

MeasureTime frameDescription
Number of Participants Who Discontinued Study Therapy Due to AEsFrom time of first dose of study therapy until the end of treatment (up to 26 months)All participants who discontinued study therapy due to an AE at any time during treatment.
Number of Participants Whose Best Response Was Partial Response (PR) or Complete Response (CR)From time of first dose of study therapy until the end of treatment (up to 26 months)Best response was determined from the start of treatment until disease progression, recurrence, or completion of 26 months of treatment. Partial and complete response was assessed by bone marrow aspiration (AL participants); or computed tomography scan, magnetic resonance imaging, positron emission tomography, or X-ray (OHM participants) using standard criteria. Acute leukemia participants were assessed based on the recommendations from the European LeukemiaNet Döhner 2010); lymphoma participants according to Cheson 2007; and MM participants according to Durie 2006.
Maximum Concentration (Cmax) of MK-8628/OTX015Cycle 1: Pre-infusion and 20 minutes; 1, 2.25, 3.25, 4, 6, 8, 9, 12, and 24 hours plus one sampling at either 10 hour or 16 hour post-infusion on Days 1 and 2 and on Days 8, 15, and 22 pre-infusion dependent on dose regimen and enrollment positionData were collected in Cycle 1 according to dosing regimen and enrollment position at the following sampling schedules: 1) Complete QD for the first 3 participants per dose level: Pre-infusion and 1, 4, 8, 12, and 24 hours (h) + 1 sampling at either 10h or 16h post-infusion on Days 1 and 2 and on Days 8, 15, and 22 pre-infusion per dose level; 2) Limited QD for participants 4 and higher: Pre-infusion and 1, 4, 6, and 8h post-infusion on Days 1 and 2 and on Days 8, 15, and 22 pre-infusion per dose level; 3) BID: Pre-infusion and at 20 minutes and 1, 2.25, 3.25. 9, 12, and 24h post-infusion on Days 1 and 2 and on Days 8, 15, and 22 pre-infusion per dose level. Blood samples for Cmax were measured using liquid chromatography-tandem mass spectrometry and analyzed using a nonlinear mixed-effects modelling software program Monolix version 4.3.2. Results for each dose level and method of administration included participants from both AL and OHM cohorts and different regimen frequencies.
Time to Maximum Concentration (Tmax) of MK-8628/OTX015Cycle 1: Pre-infusion and 20 minutes; 1, 2.25, 3.25, 4, 6, 8, 9, 12, and 24 hours plus one sampling at either 10 hour or 16 hour post-infusion on Days 1 and 2 and on Days 8, 15, and 22 pre-infusion dependent on dose regimen and enrollment positionData were collected in Cycle 1 according to dosing regimen and enrollment position at the following sampling schedules: 1) Complete QD for the first 3 participants per dose level: Pre-infusion and 1, 4, 8, 12, and 24h + 1 sampling at either 10h or 16h post-infusion on Days 1 and 2 and on Days 8, 15, and 22 pre-infusion per dose level; 2) Limited QD for participants 4 and higher: Pre-infusion and 1, 4, 6, and 8h post-infusion on Days 1 and 2 and on Days 8, 15, and 22 pre-infusion per dose level; 3) BID: Pre-infusion and at 20 minutes and 1, 2.25, 3.25. 9, 12, and 24h post-infusion on Days 1 and 2 and on Days 8, 15, and 22 pre-infusion per dose level. Blood samples for Tmax were measured using liquid chromatography-tandem mass spectrometry and analyzed using a nonlinear mixed-effects modelling software program Monolix version 4.3.2. Results for each dose level and method of administration included participants from both AL and OHM cohorts and different regimen frequencies.
Number of Participants Who Experienced at Least One Adverse Event (AE)Up to 40 days after last dose of study therapy (Up to 28 months)AE was defined as any untoward medical occurrence in a participant administered a pharmaceutical product and which did not necessarily have to have a causal relationship with this treatment. An AE could therefore be any unfavorable and unintended sign, symptom, or disease temporally associated with the use of a medicinal product/protocol specified procedure, whether or not considered related to the medicinal product/protocol specified procedure. Any worsening of a preexisting condition temporally associated with the use of the product was also an AE. AEs were collected during the entire time frame of treatment plus up to 40 days of follow-up.
Area Under the Concentration Time Curve of MK-8628/OTX015 From Time 0 to Infinity (AUC 0-inf)Cycle 1: Pre-infusion and 20 minutes; 1, 2.25, 3.25, 4, 6, 8, 9, 12, and 24 hours plus one sampling at either 10 hour or 16 hour post-infusion on Days 1 and 2 and on Days 8, 15, and 22 pre-infusion dependent on dose regimen and enrollment positionData were collected in Cycle 1 according to dosing regimen and enrollment position at the following sampling schedules: 1) Complete QD for the first 3 participants per dose level: Pre-infusion and 1, 4, 8, 12, and 24h + 1 sampling at either 10h or 16h post-infusion on Days 1 and 2 and on Days 8, 15, and 22 pre-infusion per dose level; 2) Limited QD for participants 4 and higher: Pre-infusion and 1, 4, 6, and 8h post-infusion on Days 1 and 2 and on Days 8, 15, and 22 pre-infusion per dose level; 3) BID: Pre-infusion and at 20 minutes and 1, 2.25, 3.25. 9, 12, and 24h post-infusion on Days 1 and 2 and on Days 8, 15, and 22 pre-infusion per dose level. Blood samples for AUC 0-first were measured using liquid chromatography-tandem mass spectrometry and analyzed using a nonlinear mixed-effects modelling software program Monolix version 4.3.2. Results for each dose level and method of administration included participants from both AL and OHM cohorts and different regimen frequencies.
Apparent Total Body Clearance (CL/F) of MK-8628/OTX015cycle 1: Pre-infusion and 20 minutes; 1, 2.25, 3.25, 4, 6, 8, 9, 12, and 24 hours plus one sampling at either 10 hour or 16 hour post-infusion on Days 1 and 2 and on Days 8, 15, and 22 pre-infusion dependent on dose regimen and enrollment positionData were collected in Cycle 1 according to dosing regimen and enrollment position at the following sampling schedules: 1) Complete QD for the first 3 participants per dose level: Pre-infusion and 1, 4, 8, 12, and 24h + 1 sampling at either 10h or 16h post-infusion on Days 1 and 2 and on Days 8, 15, and 22 pre-infusion per dose level; 2) Limited QD for participants 4 and higher: Pre-infusion and 1, 4, 6, and 8h post-infusion on Days 1 and 2 and on Days 8, 15, and 22 pre-infusion per dose level; 3) BID: Pre-infusion and at 20 minutes and 1, 2.25, 3.25. 9, 12, and 24h post-infusion on Days 1 and 2 and on Days 8, 15, and 22 pre-infusion per dose level. Blood samples for CL/F were measured using liquid chromatography-tandem mass spectrometry and analyzed using a nonlinear mixed-effects modelling software program Monolix version 4.3.2. Results for each dose level and method of administration included participants from both AL and OHM cohorts and different regimen frequencies.
Volume of Distribution at Steady State (Vz/F) of MK-8628/OTX015Cycle 1: Pre-infusion and 20 minutes; 1, 2.25, 3.25, 4, 6, 8, 9, 12, and 24 hours plus one sampling at either 10 hour or 16 hour post-infusion on Days 1 and 2 and on Days 8, 15, and 22 pre-infusion dependent on dose regimen and enrollment positionData were collected in Cycle 1 according to dosing regimen and enrollment position at the following sampling schedules: 1) Complete QD for the first 3 participants per dose level: Pre-infusion and 1, 4, 8, 12, and 24h + 1 sampling at either 10h or 16h post-infusion on Days 1 and 2 and on Days 8, 15, and 22 pre-infusion per dose level; 2) Limited QD for participants 4 and higher: Pre-infusion and 1, 4, 6, and 8h post-infusion on Days 1 and 2 and on Days 8, 15, and 22 pre-infusion per dose level; 3) BID: Pre-infusion and at 20 minutes and 1, 2.25, 3.25. 9, 12, and 24h post-infusion on Days 1 and 2 and on Days 8, 15, and 22 pre-infusion per dose level. Blood samples for Vz/F were measured using liquid chromatography-tandem mass spectrometry and analyzed using a nonlinear mixed-effects modelling software program Monolix version 4.3.2. Results for each dose level and method of administration included participants from both AL and OHM cohorts and different regimen frequencies.
Apparent Terminal Half-Life (t1/2) of MK-8628/OTX015Cycle 1: Pre-infusion and 20 minutes; 1, 2.25, 3.25, 4, 6, 8, 9, 12, and 24 hours plus one sampling at either 10 hour or 16 hour post-infusion on Days 1 and 2 and on Days 8, 15, and 22 pre-infusion dependent on dose regimen and enrollment positionData were collected in Cycle 1 according to dosing regimen and enrollment position at the following sampling schedules: 1) Complete QD for the first 3 participants per dose level: Pre-infusion and 1, 4, 8, 12, and 24h + 1 sampling at either 10h or 16h post-infusion on Days 1 and 2 and on Days 8, 15, and 22 pre-infusion per dose level; 2) Limited QD for participants 4 and higher: Pre-infusion and 1, 4, 6, and 8h post-infusion on Days 1 and 2 and on Days 8, 15, and 22 pre-infusion per dose level; 3) BID: Pre-infusion and at 20 minutes and 1, 2.25, 3.25. 9, 12, and 24h post-infusion on Days 1 and 2 and on Days 8, 15, and 22 pre-infusion per dose level. Blood samples for t1/2 were measured using liquid chromatography-tandem mass spectrometry and analyzed using a nonlinear mixed-effects modelling software program Monolix version 4.3.2. Results for each dose level and method of administration included participants from both AL and OHM cohorts and different regimen frequencies.

Participant flow

Recruitment details

80 participants were enrolled in the acute leukemia (AL) cohort and 78 were treated. 61 participants were enrolled in the other hematological malignancies (OHM) cohort and 60 were treated.

Pre-assignment details

The study consisted of a dose escalation phase in participants with AL and OHM followed by and expansion phase in 3 cohorts: de novo acute myelocytic leukemia (AML), myelodysplastic syndrome (MDS) AML, and diffuse large B-cell lymphoma (DLBCL).

Participants by arm

ArmCount
AL 10 mg QD 14-21
Participants received 10 mg MK-8628/OTX015 administered orally (PO), once daily (QD), in a fasted state on Days 1 to 14 of a 21-day cycle.
3
AL 20 mg QD 14-21
Participants received 20 mg MK-8628/OTX015 administered PO, QD, in a fasted state on Days 1 to 14 of a 21-day cycle.
3
AL 40 mg QD 14-21
Participants received 40 mg MK-8628/OTX015 administered PO, QD, in a fasted state on Days 1 to 14 of a 21-day cycle.
4
AL 20 mg BID 21-21
Participants received 20 mg MK-8628/OTX015 administered PO, twice a day (BID), with the first daily dose in a fasted state, on Days 1 to 21 of a 21-day cycle.
3
AL 80 mg QD 14-21
Participants received 80 mg MK-8628/OTX015 administered PO, QD, in a fasted state on Days 1 to 14 of a 21-day cycle.
4
AL 40 mg BID 14-21
Participants received 40 mg MK-8628/OTX015 administered PO, twice a day (BID), with the first daily dose in a fasted state, on Days 1 to 14 of a 21-day cycle.
8
AL 120 mg QD 14-21
Participants received 120 mg MK-8628/OTX015 administered PO, QD, in a fasted state on Days 1 to 14 of a 21-day cycle.
7
AL 120 mg QD 21-21
Participants received 120 mg MK-8628/OTX015 administered PO, QD, in a fasted state on Days 1 to 21 of a 21-day cycle.
6
AL 160 mg QD 14-21
Participants received 160 mg MK-8628/OTX015 administered PO, QD, in a fasted state on Days 1 to 14 of a 21-day cycle.
6
AML de Novo 80 mg QD 14-21
Participants received 80 mg MK-8628/OTX015 administered PO, QD, in a fasted state on Days 1 to 14 of a 21-day cycle.
18
AML/MDS 80 mg QD 14-21
Participants received 80 mg MK-8628/OTX015 administered PO, QD, in a fasted state on Days 1 to 14 of a 21-day cycle.
16
OHM 10 mg QD 21-21
Participants received 10 mg MK-8628/OTX015 administered PO, QD, in a fasted state on Days 1 to 21 of a 21-day cycle.
5
OHM 20 mg QD 21-21
Participants received 20 mg MK-8628/OTX015 administered PO, QD, in a fasted state on Days 1 to 21 of a 21-day cycle.
3
OHM 40 mg QD 21-21
Participants received 40 mg MK-8628/OTX015 administered PO, QD, in a fasted state on Days 1 to 21 of a 21-day cycle.
4
OHM 80 mg QD 21-21
Participants received 80 mg MK-8628/OTX015 administered PO, QD, in a fasted state on Days 1 to 21 of a 21-day cycle.
7
OHM 40 mg BID 21-21
Participants received 40 mg MK-8628/OTX015 administered PO, BID, with the first daily dose in a fasted state, on Days 1 to 21 of a 21-day cycle.
6
OHM 120 mg QD 21-21
Participants received 120 mg MK-8628/OTX015 administered PO, QD, in a fasted state on Days 1 to 21 of a 21-day cycle.
7
OHM 120 mg QD 14-21
Participants received 120 mg MK-8628/OTX015 administered PO, QD, in a fasted state on Days 1 to 14 of a 21-day cycle.
3
OHM 120 mg QD 5-7
Participants received 120 mg MK-8628/OTX015 administered PO, QD, in a fasted state on Days 1 to 5 of a 7-day cycle.
5
OHM 120 mg QD 7-21
Participants received 120 mg MK-8628/OTX015 administered PO, QD, in a fasted state on Days 1 to 7 of a 21-day cycle.
5
OHM/DLBCL 80 mg QD 14-21
Participants received 80 mg MK-8628/OTX015 administered PO, QD, in a fasted state on Days 1 to 14 of a 21-day cycle.
15
Total138

Withdrawals & dropouts

PeriodReasonFG000FG001FG002FG003FG004FG005FG006FG007FG008FG009FG010FG011FG012FG013FG014FG015FG016FG017FG018FG019FG020
Overall StudyAdverse event-related000000000110000000100
Overall StudyAdverse event-unrelated000001110000011000000
Overall StudyDeath000113323430000000000
Overall StudyDisease progression333233333111053366523515
Overall StudyDisease progression and adverse event000000000000000010000
Overall StudyLack of Efficacy000000000120000000000
Overall StudyStopped to receive bone marrow graft000000000000000010000
Overall StudyWithdrawal by Subject000000000000000001000
Overall StudyWithdrawal of consent001001000100000000100

Baseline characteristics

CharacteristicAL 20 mg QD 14-21AL 20 mg BID 21-21AL 80 mg QD 14-21AL 40 mg BID 14-21AL 120 mg QD 14-21AL 120 mg QD 21-21AL 160 mg QD 14-21AML de Novo 80 mg QD 14-21AML/MDS 80 mg QD 14-21OHM 10 mg QD 21-21OHM 20 mg QD 21-21OHM 40 mg QD 21-21OHM 80 mg QD 21-21OHM 40 mg BID 21-21OHM 120 mg QD 21-21OHM 120 mg QD 14-21OHM 120 mg QD 5-7OHM 120 mg QD 7-21AL 10 mg QD 14-21OHM/DLBCL 80 mg QD 14-21TotalAL 40 mg QD 14-21
Age, Continuous54.7 Years
STANDARD_DEVIATION 19.6
77.7 Years
STANDARD_DEVIATION 2.3
70.0 Years
STANDARD_DEVIATION 10.6
65.8 Years
STANDARD_DEVIATION 16.3
65.3 Years
STANDARD_DEVIATION 13.9
58.5 Years
STANDARD_DEVIATION 24.1
57.8 Years
STANDARD_DEVIATION 16.6
65.6 Years
STANDARD_DEVIATION 10
67.2 Years
STANDARD_DEVIATION 8.2
65.2 Years
STANDARD_DEVIATION 15.5
74.7 Years
STANDARD_DEVIATION 7.4
69.0 Years
STANDARD_DEVIATION 8.4
59.4 Years
STANDARD_DEVIATION 18.5
54.7 Years
STANDARD_DEVIATION 13
55.6 Years
STANDARD_DEVIATION 19.3
66.0 Years
STANDARD_DEVIATION 13.2
62.4 Years
STANDARD_DEVIATION 8.4
66.8 Years
STANDARD_DEVIATION 8.3
67.0 Years
STANDARD_DEVIATION 3.5
58.5 Years
STANDARD_DEVIATION 14.1
63.7 Years
STANDARD_DEVIATION 13.6
73.8 Years
STANDARD_DEVIATION 2.1
Race and Ethnicity Not Collected0 Participants
Sex: Female, Male
Female
3 Participants1 Participants0 Participants3 Participants3 Participants2 Participants0 Participants8 Participants3 Participants0 Participants1 Participants2 Participants3 Participants3 Participants2 Participants0 Participants0 Participants5 Participants1 Participants4 Participants46 Participants2 Participants
Sex: Female, Male
Male
0 Participants2 Participants4 Participants5 Participants4 Participants4 Participants6 Participants10 Participants13 Participants5 Participants2 Participants2 Participants4 Participants3 Participants5 Participants3 Participants5 Participants0 Participants2 Participants11 Participants92 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
EG005
affected / at risk
EG006
affected / at risk
EG007
affected / at risk
EG008
affected / at risk
EG009
affected / at risk
EG010
affected / at risk
EG011
affected / at risk
EG012
affected / at risk
EG013
affected / at risk
EG014
affected / at risk
EG015
affected / at risk
EG016
affected / at risk
EG017
affected / at risk
EG018
affected / at risk
EG019
affected / at risk
EG020
affected / at risk
deaths
Total, all-cause mortality
3 / 33 / 34 / 43 / 34 / 47 / 87 / 76 / 66 / 615 / 1815 / 163 / 52 / 32 / 44 / 65 / 71 / 32 / 55 / 59 / 154 / 7
other
Total, other adverse events
3 / 33 / 34 / 43 / 34 / 48 / 87 / 76 / 66 / 618 / 1816 / 165 / 53 / 34 / 46 / 67 / 73 / 35 / 55 / 515 / 157 / 7
serious
Total, serious adverse events
1 / 32 / 33 / 41 / 33 / 47 / 86 / 75 / 64 / 614 / 1814 / 163 / 51 / 30 / 45 / 66 / 72 / 32 / 52 / 55 / 154 / 7

Outcome results

Primary

Number of Participants With Dose Limiting Toxicities (DLTs)

A DLT was graded using the National Cancer Institute-Common Toxicity Criteria for Adverse Events (NCI-CTCAE) version 4.02 and defined as any of the following: grade 3 or 4 non-hematologic adverse events unless they were not optimally treated with supportive care; grade 3 or 4 asymptomatic laboratory abnormal values lasting \>7 days; prolonged grade 2 toxicity (lasting more than 2 weeks) leading to treatment interruption and/or dose reduction; pancytopenia with a hypocellular bone marrow and no marrow blasts lasting ≥6 weeks (AL participants); grade 3 neutropenia with fever or infection (OHM participants); grade 3 thrombocytopenia with bleeding (OHM participants); or grade 4 neutropenia or thrombocytopenia, regardless of symptoms and lasting ≥3 days (OHM participants).

Time frame: Cycle 1 (Up to 21 days)

Population: All participants who received at least 85% of the intended dose of study therapy during the first cycle (i.e. \>12 days at full dose for AL and \>18 days at full dose for other hematological malignancies) or discontinued from the study due to a DLT attributable to study therapy.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
AL 10 mg QD 14-21Number of Participants With Dose Limiting Toxicities (DLTs)0 Participants
AL 20 mg QD 14-21Number of Participants With Dose Limiting Toxicities (DLTs)0 Participants
AL 40 mg QD 14-21Number of Participants With Dose Limiting Toxicities (DLTs)0 Participants
AL 20 mg BID 21-21Number of Participants With Dose Limiting Toxicities (DLTs)0 Participants
AL 80 mg QD 14-21Number of Participants With Dose Limiting Toxicities (DLTs)0 Participants
AL 40 mg BID 14-21Number of Participants With Dose Limiting Toxicities (DLTs)0 Participants
AL 120 mg QD 14-21Number of Participants With Dose Limiting Toxicities (DLTs)0 Participants
AL 120 mg QD 21-21Number of Participants With Dose Limiting Toxicities (DLTs)0 Participants
AL 160 mg QD 14-21Number of Participants With Dose Limiting Toxicities (DLTs)2 Participants
AML de Novo 80 mg QD 14-21Number of Participants With Dose Limiting Toxicities (DLTs)0 Participants
AML/MDS 80 mg QD 14-21Number of Participants With Dose Limiting Toxicities (DLTs)1 Participants
OHM 10 mg QD 21-21Number of Participants With Dose Limiting Toxicities (DLTs)0 Participants
OHM 20 mg QD 21-21Number of Participants With Dose Limiting Toxicities (DLTs)0 Participants
OHM 40 mg QD 21-21Number of Participants With Dose Limiting Toxicities (DLTs)0 Participants
OHM 80 mg QD 21-21Number of Participants With Dose Limiting Toxicities (DLTs)2 Participants
OHM 40 mg BID 21-21Number of Participants With Dose Limiting Toxicities (DLTs)5 Participants
OHM 120 mg QD 21-21Number of Participants With Dose Limiting Toxicities (DLTs)4 Participants
OHM 120 mg QD 14-21Number of Participants With Dose Limiting Toxicities (DLTs)2 Participants
OHM 120 mg QD 5-7Number of Participants With Dose Limiting Toxicities (DLTs)3 Participants
OHM 120 mg QD 7-21Number of Participants With Dose Limiting Toxicities (DLTs)2 Participants
OHM/DLBCL 80 mg QD 14-21Number of Participants With Dose Limiting Toxicities (DLTs)0 Participants
Secondary

Apparent Terminal Half-Life (t1/2) of MK-8628/OTX015

Data were collected in Cycle 1 according to dosing regimen and enrollment position at the following sampling schedules: 1) Complete QD for the first 3 participants per dose level: Pre-infusion and 1, 4, 8, 12, and 24h + 1 sampling at either 10h or 16h post-infusion on Days 1 and 2 and on Days 8, 15, and 22 pre-infusion per dose level; 2) Limited QD for participants 4 and higher: Pre-infusion and 1, 4, 6, and 8h post-infusion on Days 1 and 2 and on Days 8, 15, and 22 pre-infusion per dose level; 3) BID: Pre-infusion and at 20 minutes and 1, 2.25, 3.25. 9, 12, and 24h post-infusion on Days 1 and 2 and on Days 8, 15, and 22 pre-infusion per dose level. Blood samples for t1/2 were measured using liquid chromatography-tandem mass spectrometry and analyzed using a nonlinear mixed-effects modelling software program Monolix version 4.3.2. Results for each dose level and method of administration included participants from both AL and OHM cohorts and different regimen frequencies.

Time frame: Cycle 1: Pre-infusion and 20 minutes; 1, 2.25, 3.25, 4, 6, 8, 9, 12, and 24 hours plus one sampling at either 10 hour or 16 hour post-infusion on Days 1 and 2 and on Days 8, 15, and 22 pre-infusion dependent on dose regimen and enrollment position

Population: All participants that received at least 1 dose of study therapy and had evaluable data for endpoint. Results were pooled by dose taken and not by disease or regimen.

ArmMeasureValue (MEAN)Dispersion
AL 10 mg QD 14-21Apparent Terminal Half-Life (t1/2) of MK-8628/OTX0153.65 HoursStandard Deviation 0.695
AL 20 mg QD 14-21Apparent Terminal Half-Life (t1/2) of MK-8628/OTX0154.78 HoursStandard Deviation 1.53
AL 40 mg QD 14-21Apparent Terminal Half-Life (t1/2) of MK-8628/OTX0154.55 HoursStandard Deviation 0.533
AL 20 mg BID 21-21Apparent Terminal Half-Life (t1/2) of MK-8628/OTX0154.71 HoursStandard Deviation 1.1
AL 80 mg QD 14-21Apparent Terminal Half-Life (t1/2) of MK-8628/OTX0154.62 HoursStandard Deviation 0.673
AL 40 mg BID 14-21Apparent Terminal Half-Life (t1/2) of MK-8628/OTX0154.70 HoursStandard Deviation 1.19
AL 120 mg QD 14-21Apparent Terminal Half-Life (t1/2) of MK-8628/OTX0154.49 HoursStandard Deviation 1.01
AL 120 mg QD 21-21Apparent Terminal Half-Life (t1/2) of MK-8628/OTX0153.87 HoursStandard Deviation 0.712
AL 160 mg QD 14-21Apparent Terminal Half-Life (t1/2) of MK-8628/OTX0154.27 HoursStandard Deviation 0.94
Secondary

Apparent Total Body Clearance (CL/F) of MK-8628/OTX015

Data were collected in Cycle 1 according to dosing regimen and enrollment position at the following sampling schedules: 1) Complete QD for the first 3 participants per dose level: Pre-infusion and 1, 4, 8, 12, and 24h + 1 sampling at either 10h or 16h post-infusion on Days 1 and 2 and on Days 8, 15, and 22 pre-infusion per dose level; 2) Limited QD for participants 4 and higher: Pre-infusion and 1, 4, 6, and 8h post-infusion on Days 1 and 2 and on Days 8, 15, and 22 pre-infusion per dose level; 3) BID: Pre-infusion and at 20 minutes and 1, 2.25, 3.25. 9, 12, and 24h post-infusion on Days 1 and 2 and on Days 8, 15, and 22 pre-infusion per dose level. Blood samples for CL/F were measured using liquid chromatography-tandem mass spectrometry and analyzed using a nonlinear mixed-effects modelling software program Monolix version 4.3.2. Results for each dose level and method of administration included participants from both AL and OHM cohorts and different regimen frequencies.

Time frame: cycle 1: Pre-infusion and 20 minutes; 1, 2.25, 3.25, 4, 6, 8, 9, 12, and 24 hours plus one sampling at either 10 hour or 16 hour post-infusion on Days 1 and 2 and on Days 8, 15, and 22 pre-infusion dependent on dose regimen and enrollment position

Population: All participants that received at least 1 dose of study therapy and had evaluable data for endpoint. Results were pooled by dose taken and not by disease or regimen.

ArmMeasureValue (MEAN)Dispersion
AL 10 mg QD 14-21Apparent Total Body Clearance (CL/F) of MK-8628/OTX0159.71 L/hourStandard Deviation 1.73
AL 20 mg QD 14-21Apparent Total Body Clearance (CL/F) of MK-8628/OTX0157.67 L/hourStandard Deviation 2.13
AL 40 mg QD 14-21Apparent Total Body Clearance (CL/F) of MK-8628/OTX0157.76 L/hourStandard Deviation 1.38
AL 20 mg BID 21-21Apparent Total Body Clearance (CL/F) of MK-8628/OTX0156.53 L/hourStandard Deviation 1.88
AL 80 mg QD 14-21Apparent Total Body Clearance (CL/F) of MK-8628/OTX0157.91 L/hourStandard Deviation 3.04
AL 40 mg BID 14-21Apparent Total Body Clearance (CL/F) of MK-8628/OTX0157.49 L/hourStandard Deviation 2.18
AL 120 mg QD 14-21Apparent Total Body Clearance (CL/F) of MK-8628/OTX0158.61 L/hourStandard Deviation 2.22
AL 120 mg QD 21-21Apparent Total Body Clearance (CL/F) of MK-8628/OTX01512.7 L/hourStandard Deviation 2.8
AL 160 mg QD 14-21Apparent Total Body Clearance (CL/F) of MK-8628/OTX0158.87 L/hourStandard Deviation 2.6
Secondary

Area Under the Concentration Time Curve of MK-8628/OTX015 From Time 0 to Infinity (AUC 0-inf)

Data were collected in Cycle 1 according to dosing regimen and enrollment position at the following sampling schedules: 1) Complete QD for the first 3 participants per dose level: Pre-infusion and 1, 4, 8, 12, and 24h + 1 sampling at either 10h or 16h post-infusion on Days 1 and 2 and on Days 8, 15, and 22 pre-infusion per dose level; 2) Limited QD for participants 4 and higher: Pre-infusion and 1, 4, 6, and 8h post-infusion on Days 1 and 2 and on Days 8, 15, and 22 pre-infusion per dose level; 3) BID: Pre-infusion and at 20 minutes and 1, 2.25, 3.25. 9, 12, and 24h post-infusion on Days 1 and 2 and on Days 8, 15, and 22 pre-infusion per dose level. Blood samples for AUC 0-first were measured using liquid chromatography-tandem mass spectrometry and analyzed using a nonlinear mixed-effects modelling software program Monolix version 4.3.2. Results for each dose level and method of administration included participants from both AL and OHM cohorts and different regimen frequencies.

Time frame: Cycle 1: Pre-infusion and 20 minutes; 1, 2.25, 3.25, 4, 6, 8, 9, 12, and 24 hours plus one sampling at either 10 hour or 16 hour post-infusion on Days 1 and 2 and on Days 8, 15, and 22 pre-infusion dependent on dose regimen and enrollment position

Population: All participants that received at least 1 dose of study therapy and had evaluable data for endpoint. Results were pooled by dose taken and not by disease or regimen.

ArmMeasureValue (MEAN)Dispersion
AL 10 mg QD 14-21Area Under the Concentration Time Curve of MK-8628/OTX015 From Time 0 to Infinity (AUC 0-inf)1060 hr*ng/mLStandard Deviation 191
AL 20 mg QD 14-21Area Under the Concentration Time Curve of MK-8628/OTX015 From Time 0 to Infinity (AUC 0-inf)2828 hr*ng/mLStandard Deviation 983
AL 40 mg QD 14-21Area Under the Concentration Time Curve of MK-8628/OTX015 From Time 0 to Infinity (AUC 0-inf)5301 hr*ng/mLStandard Deviation 924
AL 20 mg BID 21-21Area Under the Concentration Time Curve of MK-8628/OTX015 From Time 0 to Infinity (AUC 0-inf)3947 hr*ng/mLStandard Deviation 1184
AL 80 mg QD 14-21Area Under the Concentration Time Curve of MK-8628/OTX015 From Time 0 to Infinity (AUC 0-inf)11910 hr*ng/mLStandard Deviation 6987
AL 40 mg BID 14-21Area Under the Concentration Time Curve of MK-8628/OTX015 From Time 0 to Infinity (AUC 0-inf)5619 hr*ng/mLStandard Deviation 1895
AL 120 mg QD 14-21Area Under the Concentration Time Curve of MK-8628/OTX015 From Time 0 to Infinity (AUC 0-inf)15240 hr*ng/mLStandard Deviation 6021
AL 120 mg QD 21-21Area Under the Concentration Time Curve of MK-8628/OTX015 From Time 0 to Infinity (AUC 0-inf)13190 hr*ng/mLStandard Deviation 3183
AL 160 mg QD 14-21Area Under the Concentration Time Curve of MK-8628/OTX015 From Time 0 to Infinity (AUC 0-inf)9833 hr*ng/mLStandard Deviation 2968
Secondary

Maximum Concentration (Cmax) of MK-8628/OTX015

Data were collected in Cycle 1 according to dosing regimen and enrollment position at the following sampling schedules: 1) Complete QD for the first 3 participants per dose level: Pre-infusion and 1, 4, 8, 12, and 24 hours (h) + 1 sampling at either 10h or 16h post-infusion on Days 1 and 2 and on Days 8, 15, and 22 pre-infusion per dose level; 2) Limited QD for participants 4 and higher: Pre-infusion and 1, 4, 6, and 8h post-infusion on Days 1 and 2 and on Days 8, 15, and 22 pre-infusion per dose level; 3) BID: Pre-infusion and at 20 minutes and 1, 2.25, 3.25. 9, 12, and 24h post-infusion on Days 1 and 2 and on Days 8, 15, and 22 pre-infusion per dose level. Blood samples for Cmax were measured using liquid chromatography-tandem mass spectrometry and analyzed using a nonlinear mixed-effects modelling software program Monolix version 4.3.2. Results for each dose level and method of administration included participants from both AL and OHM cohorts and different regimen frequencies.

Time frame: Cycle 1: Pre-infusion and 20 minutes; 1, 2.25, 3.25, 4, 6, 8, 9, 12, and 24 hours plus one sampling at either 10 hour or 16 hour post-infusion on Days 1 and 2 and on Days 8, 15, and 22 pre-infusion dependent on dose regimen and enrollment position

Population: All participants that received at least 1 dose of study therapy and had evaluable data for endpoint. Results were pooled by dose taken and not by disease or regimen.

ArmMeasureValue (MEAN)Dispersion
AL 10 mg QD 14-21Maximum Concentration (Cmax) of MK-8628/OTX015131 ug/LStandard Deviation 56.5
AL 20 mg QD 14-21Maximum Concentration (Cmax) of MK-8628/OTX015275 ug/LStandard Deviation 104
AL 40 mg QD 14-21Maximum Concentration (Cmax) of MK-8628/OTX015627 ug/LStandard Deviation 328
AL 20 mg BID 21-21Maximum Concentration (Cmax) of MK-8628/OTX015453 ug/LStandard Deviation 185
AL 80 mg QD 14-21Maximum Concentration (Cmax) of MK-8628/OTX0151131 ug/LStandard Deviation 650
AL 40 mg BID 14-21Maximum Concentration (Cmax) of MK-8628/OTX015556 ug/LStandard Deviation 194
AL 120 mg QD 14-21Maximum Concentration (Cmax) of MK-8628/OTX0151425 ug/LStandard Deviation 555
AL 120 mg QD 21-21Maximum Concentration (Cmax) of MK-8628/OTX0151292 ug/LStandard Deviation 572
AL 160 mg QD 14-21Maximum Concentration (Cmax) of MK-8628/OTX015982 ug/LStandard Deviation 316
Secondary

Number of Participants Who Discontinued Study Therapy Due to AEs

All participants who discontinued study therapy due to an AE at any time during treatment.

Time frame: From time of first dose of study therapy until the end of treatment (up to 26 months)

Population: All participants who received at least one dose of study therapy.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
AL 10 mg QD 14-21Number of Participants Who Discontinued Study Therapy Due to AEs0 Participants
AL 20 mg QD 14-21Number of Participants Who Discontinued Study Therapy Due to AEs0 Participants
AL 40 mg QD 14-21Number of Participants Who Discontinued Study Therapy Due to AEs1 Participants
AL 20 mg BID 21-21Number of Participants Who Discontinued Study Therapy Due to AEs1 Participants
AL 80 mg QD 14-21Number of Participants Who Discontinued Study Therapy Due to AEs1 Participants
AL 40 mg BID 14-21Number of Participants Who Discontinued Study Therapy Due to AEs3 Participants
AL 120 mg QD 14-21Number of Participants Who Discontinued Study Therapy Due to AEs2 Participants
AL 120 mg QD 21-21Number of Participants Who Discontinued Study Therapy Due to AEs2 Participants
AL 160 mg QD 14-21Number of Participants Who Discontinued Study Therapy Due to AEs4 Participants
AML de Novo 80 mg QD 14-21Number of Participants Who Discontinued Study Therapy Due to AEs7 Participants
AML/MDS 80 mg QD 14-21Number of Participants Who Discontinued Study Therapy Due to AEs4 Participants
OHM 10 mg QD 21-21Number of Participants Who Discontinued Study Therapy Due to AEs0 Participants
OHM 20 mg QD 21-21Number of Participants Who Discontinued Study Therapy Due to AEs0 Participants
OHM 40 mg QD 21-21Number of Participants Who Discontinued Study Therapy Due to AEs1 Participants
OHM 80 mg QD 21-21Number of Participants Who Discontinued Study Therapy Due to AEs1 Participants
OHM 40 mg BID 21-21Number of Participants Who Discontinued Study Therapy Due to AEs1 Participants
OHM 120 mg QD 21-21Number of Participants Who Discontinued Study Therapy Due to AEs2 Participants
OHM 120 mg QD 14-21Number of Participants Who Discontinued Study Therapy Due to AEs1 Participants
OHM 120 mg QD 5-7Number of Participants Who Discontinued Study Therapy Due to AEs2 Participants
OHM 120 mg QD 7-21Number of Participants Who Discontinued Study Therapy Due to AEs0 Participants
OHM/DLBCL 80 mg QD 14-21Number of Participants Who Discontinued Study Therapy Due to AEs0 Participants
Secondary

Number of Participants Who Experienced at Least One Adverse Event (AE)

AE was defined as any untoward medical occurrence in a participant administered a pharmaceutical product and which did not necessarily have to have a causal relationship with this treatment. An AE could therefore be any unfavorable and unintended sign, symptom, or disease temporally associated with the use of a medicinal product/protocol specified procedure, whether or not considered related to the medicinal product/protocol specified procedure. Any worsening of a preexisting condition temporally associated with the use of the product was also an AE. AEs were collected during the entire time frame of treatment plus up to 40 days of follow-up.

Time frame: Up to 40 days after last dose of study therapy (Up to 28 months)

Population: All participants who received at least one dose of study therapy.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
AL 10 mg QD 14-21Number of Participants Who Experienced at Least One Adverse Event (AE)3 Participants
AL 20 mg QD 14-21Number of Participants Who Experienced at Least One Adverse Event (AE)3 Participants
AL 40 mg QD 14-21Number of Participants Who Experienced at Least One Adverse Event (AE)4 Participants
AL 20 mg BID 21-21Number of Participants Who Experienced at Least One Adverse Event (AE)3 Participants
AL 80 mg QD 14-21Number of Participants Who Experienced at Least One Adverse Event (AE)4 Participants
AL 40 mg BID 14-21Number of Participants Who Experienced at Least One Adverse Event (AE)8 Participants
AL 120 mg QD 14-21Number of Participants Who Experienced at Least One Adverse Event (AE)7 Participants
AL 120 mg QD 21-21Number of Participants Who Experienced at Least One Adverse Event (AE)6 Participants
AL 160 mg QD 14-21Number of Participants Who Experienced at Least One Adverse Event (AE)6 Participants
AML de Novo 80 mg QD 14-21Number of Participants Who Experienced at Least One Adverse Event (AE)18 Participants
AML/MDS 80 mg QD 14-21Number of Participants Who Experienced at Least One Adverse Event (AE)16 Participants
OHM 10 mg QD 21-21Number of Participants Who Experienced at Least One Adverse Event (AE)5 Participants
OHM 20 mg QD 21-21Number of Participants Who Experienced at Least One Adverse Event (AE)3 Participants
OHM 40 mg QD 21-21Number of Participants Who Experienced at Least One Adverse Event (AE)4 Participants
OHM 80 mg QD 21-21Number of Participants Who Experienced at Least One Adverse Event (AE)7 Participants
OHM 40 mg BID 21-21Number of Participants Who Experienced at Least One Adverse Event (AE)6 Participants
OHM 120 mg QD 21-21Number of Participants Who Experienced at Least One Adverse Event (AE)7 Participants
OHM 120 mg QD 14-21Number of Participants Who Experienced at Least One Adverse Event (AE)3 Participants
OHM 120 mg QD 5-7Number of Participants Who Experienced at Least One Adverse Event (AE)5 Participants
OHM 120 mg QD 7-21Number of Participants Who Experienced at Least One Adverse Event (AE)5 Participants
OHM/DLBCL 80 mg QD 14-21Number of Participants Who Experienced at Least One Adverse Event (AE)15 Participants
Secondary

Number of Participants Whose Best Response Was Partial Response (PR) or Complete Response (CR)

Best response was determined from the start of treatment until disease progression, recurrence, or completion of 26 months of treatment. Partial and complete response was assessed by bone marrow aspiration (AL participants); or computed tomography scan, magnetic resonance imaging, positron emission tomography, or X-ray (OHM participants) using standard criteria. Acute leukemia participants were assessed based on the recommendations from the European LeukemiaNet Döhner 2010); lymphoma participants according to Cheson 2007; and MM participants according to Durie 2006.

Time frame: From time of first dose of study therapy until the end of treatment (up to 26 months)

Population: All participants who received one dose of study therapy and had at least one available tumor assessment by the end of Cycle 2 or later or with earlier evidence of response or progression.

ArmMeasureValue (NUMBER)
AL 10 mg QD 14-21Number of Participants Whose Best Response Was Partial Response (PR) or Complete Response (CR)0 Participants
AL 20 mg QD 14-21Number of Participants Whose Best Response Was Partial Response (PR) or Complete Response (CR)0 Participants
AL 40 mg QD 14-21Number of Participants Whose Best Response Was Partial Response (PR) or Complete Response (CR)1 Participants
AL 20 mg BID 21-21Number of Participants Whose Best Response Was Partial Response (PR) or Complete Response (CR)0 Participants
AL 80 mg QD 14-21Number of Participants Whose Best Response Was Partial Response (PR) or Complete Response (CR)1 Participants
AL 40 mg BID 14-21Number of Participants Whose Best Response Was Partial Response (PR) or Complete Response (CR)0 Participants
AL 120 mg QD 14-21Number of Participants Whose Best Response Was Partial Response (PR) or Complete Response (CR)0 Participants
AL 120 mg QD 21-21Number of Participants Whose Best Response Was Partial Response (PR) or Complete Response (CR)0 Participants
AL 160 mg QD 14-21Number of Participants Whose Best Response Was Partial Response (PR) or Complete Response (CR)1 Participants
AML de Novo 80 mg QD 14-21Number of Participants Whose Best Response Was Partial Response (PR) or Complete Response (CR)0 Participants
AML/MDS 80 mg QD 14-21Number of Participants Whose Best Response Was Partial Response (PR) or Complete Response (CR)0 Participants
OHM 10 mg QD 21-21Number of Participants Whose Best Response Was Partial Response (PR) or Complete Response (CR)0 Participants
OHM 20 mg QD 21-21Number of Participants Whose Best Response Was Partial Response (PR) or Complete Response (CR)0 Participants
OHM 40 mg QD 21-21Number of Participants Whose Best Response Was Partial Response (PR) or Complete Response (CR)0 Participants
OHM 80 mg QD 21-21Number of Participants Whose Best Response Was Partial Response (PR) or Complete Response (CR)1 Participants
OHM 40 mg BID 21-21Number of Participants Whose Best Response Was Partial Response (PR) or Complete Response (CR)0 Participants
OHM 120 mg QD 21-21Number of Participants Whose Best Response Was Partial Response (PR) or Complete Response (CR)1 Participants
OHM 120 mg QD 14-21Number of Participants Whose Best Response Was Partial Response (PR) or Complete Response (CR)1 Participants
OHM 120 mg QD 5-7Number of Participants Whose Best Response Was Partial Response (PR) or Complete Response (CR)0 Participants
OHM 120 mg QD 7-21Number of Participants Whose Best Response Was Partial Response (PR) or Complete Response (CR)0 Participants
OHM/DLBCL 80 mg QD 14-21Number of Participants Whose Best Response Was Partial Response (PR) or Complete Response (CR)1 Participants
Secondary

Time to Maximum Concentration (Tmax) of MK-8628/OTX015

Data were collected in Cycle 1 according to dosing regimen and enrollment position at the following sampling schedules: 1) Complete QD for the first 3 participants per dose level: Pre-infusion and 1, 4, 8, 12, and 24h + 1 sampling at either 10h or 16h post-infusion on Days 1 and 2 and on Days 8, 15, and 22 pre-infusion per dose level; 2) Limited QD for participants 4 and higher: Pre-infusion and 1, 4, 6, and 8h post-infusion on Days 1 and 2 and on Days 8, 15, and 22 pre-infusion per dose level; 3) BID: Pre-infusion and at 20 minutes and 1, 2.25, 3.25. 9, 12, and 24h post-infusion on Days 1 and 2 and on Days 8, 15, and 22 pre-infusion per dose level. Blood samples for Tmax were measured using liquid chromatography-tandem mass spectrometry and analyzed using a nonlinear mixed-effects modelling software program Monolix version 4.3.2. Results for each dose level and method of administration included participants from both AL and OHM cohorts and different regimen frequencies.

Time frame: Cycle 1: Pre-infusion and 20 minutes; 1, 2.25, 3.25, 4, 6, 8, 9, 12, and 24 hours plus one sampling at either 10 hour or 16 hour post-infusion on Days 1 and 2 and on Days 8, 15, and 22 pre-infusion dependent on dose regimen and enrollment position

Population: All participants that received at least 1 dose of study therapy and had evaluable data for endpoint. Results were pooled by dose taken and not by disease or regimen.

ArmMeasureValue (MEAN)Dispersion
AL 10 mg QD 14-21Time to Maximum Concentration (Tmax) of MK-8628/OTX0151.78 HoursStandard Deviation 1.37
AL 20 mg QD 14-21Time to Maximum Concentration (Tmax) of MK-8628/OTX0153.03 HoursStandard Deviation 1.54
AL 40 mg QD 14-21Time to Maximum Concentration (Tmax) of MK-8628/OTX0151.75 HoursStandard Deviation 1.04
AL 20 mg BID 21-21Time to Maximum Concentration (Tmax) of MK-8628/OTX0151.92 HoursStandard Deviation 0.795
AL 80 mg QD 14-21Time to Maximum Concentration (Tmax) of MK-8628/OTX0153.44 HoursStandard Deviation 1.21
AL 40 mg BID 14-21Time to Maximum Concentration (Tmax) of MK-8628/OTX0152.73 HoursStandard Deviation 2.08
AL 120 mg QD 14-21Time to Maximum Concentration (Tmax) of MK-8628/OTX0153.48 HoursStandard Deviation 1.35
AL 120 mg QD 21-21Time to Maximum Concentration (Tmax) of MK-8628/OTX0154.22 HoursStandard Deviation 2.46
AL 160 mg QD 14-21Time to Maximum Concentration (Tmax) of MK-8628/OTX0153.07 HoursStandard Deviation 1.79
Secondary

Volume of Distribution at Steady State (Vz/F) of MK-8628/OTX015

Data were collected in Cycle 1 according to dosing regimen and enrollment position at the following sampling schedules: 1) Complete QD for the first 3 participants per dose level: Pre-infusion and 1, 4, 8, 12, and 24h + 1 sampling at either 10h or 16h post-infusion on Days 1 and 2 and on Days 8, 15, and 22 pre-infusion per dose level; 2) Limited QD for participants 4 and higher: Pre-infusion and 1, 4, 6, and 8h post-infusion on Days 1 and 2 and on Days 8, 15, and 22 pre-infusion per dose level; 3) BID: Pre-infusion and at 20 minutes and 1, 2.25, 3.25. 9, 12, and 24h post-infusion on Days 1 and 2 and on Days 8, 15, and 22 pre-infusion per dose level. Blood samples for Vz/F were measured using liquid chromatography-tandem mass spectrometry and analyzed using a nonlinear mixed-effects modelling software program Monolix version 4.3.2. Results for each dose level and method of administration included participants from both AL and OHM cohorts and different regimen frequencies.

Time frame: Cycle 1: Pre-infusion and 20 minutes; 1, 2.25, 3.25, 4, 6, 8, 9, 12, and 24 hours plus one sampling at either 10 hour or 16 hour post-infusion on Days 1 and 2 and on Days 8, 15, and 22 pre-infusion dependent on dose regimen and enrollment position

Population: All participants that received at least 1 dose of study therapy and had evaluable data for endpoint. Results were pooled by dose taken and not by disease or regimen.

ArmMeasureValue (MEAN)Dispersion
AL 10 mg QD 14-21Volume of Distribution at Steady State (Vz/F) of MK-8628/OTX01549.6 LitersStandard Deviation 1
AL 20 mg QD 14-21Volume of Distribution at Steady State (Vz/F) of MK-8628/OTX01549.1 LitersStandard Deviation 3.51
AL 40 mg QD 14-21Volume of Distribution at Steady State (Vz/F) of MK-8628/OTX01550.8 LitersStandard Deviation 10
AL 20 mg BID 21-21Volume of Distribution at Steady State (Vz/F) of MK-8628/OTX01542.4 LitersStandard Deviation 4.25
AL 80 mg QD 14-21Volume of Distribution at Steady State (Vz/F) of MK-8628/OTX01550.4 LitersStandard Deviation 17.5
AL 40 mg BID 14-21Volume of Distribution at Steady State (Vz/F) of MK-8628/OTX01548.2 LitersStandard Deviation 9.22
AL 120 mg QD 14-21Volume of Distribution at Steady State (Vz/F) of MK-8628/OTX01554.2 LitersStandard Deviation 14.4
AL 120 mg QD 21-21Volume of Distribution at Steady State (Vz/F) of MK-8628/OTX01569.3 LitersStandard Deviation 13.3
AL 160 mg QD 14-21Volume of Distribution at Steady State (Vz/F) of MK-8628/OTX01552.0 LitersStandard Deviation 9.18

Source: ClinicalTrials.gov · Data processed: Mar 13, 2026