A Dose Escalation and Cohort Expansion Study of KB-0742 in Participants With Relapsed or Refractory Solid Tumors or Non-Hodgkin Lymphoma
![]() |
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Know the risks and potential benefits of clinical studies and talk to your health care provider before participating. Read our disclaimer for details. |
ClinicalTrials.gov Identifier: NCT04718675 |
Recruitment Status :
Recruiting
First Posted : January 22, 2021
Last Update Posted : March 11, 2022
|
- Study Details
- Tabular View
- No Results Posted
- Disclaimer
- How to Read a Study Record
Part 1: Dose Escalation. The primary objective of Part 1 of this study is to evaluate the safety and tolerability of KB-0742 in participants with relapsed or refractory (R/R) solid tumors or non-Hodgkin lymphoma (NHL).
Part 2: Cohort Expansion. The primary objective of Part 2 of this study is to further evaluate the safety and tolerability of KB-0742 in defined participant cohorts.
Condition or disease | Intervention/treatment | Phase |
---|---|---|
Relapsed Solid Tumors Refractory Solid Tumors Non-Hodgkin Lymphoma | Drug: KB-0742 | Phase 1 |
Study Type : | Interventional (Clinical Trial) |
Estimated Enrollment : | 100 participants |
Allocation: | Non-Randomized |
Intervention Model: | Sequential Assignment |
Masking: | None (Open Label) |
Primary Purpose: | Treatment |
Official Title: | Phase 1, First-in-human, Open-label Dose Escalation and Cohort Expansion Study of KB-0742 in Patients With Relapsed or Refractory Solid Tumors or Non-Hodgkin Lymphoma |
Actual Study Start Date : | February 8, 2021 |
Estimated Primary Completion Date : | November 2023 |
Estimated Study Completion Date : | March 2024 |
Arm | Intervention/treatment |
---|---|
Experimental: Part 1: Dose Escalation
Sequential cohorts of participants will receive escalating doses of KB-0742.
|
Drug: KB-0742
Oral capsules |
Experimental: Part 2: Cohort Expansion
Following identification of the maximally tolerated dose (MTD) / recommended Phase 2 dose (RP2D) in Part 1, the following expansion cohorts will be enrolled: Cohort A: Relapsed or refractory (R/R) solid tumors with evidence of MYC amplication/overexpression. Cohort B: Relapsed or refractory (R/R) soft tissue sarcomas with evidence of transcription factor dysregulation. |
Drug: KB-0742
Oral capsules |
- Part 1 and Part 2: Incidence of Adverse Events (AEs) [ Time Frame: Cycle 1 Day 1 up to 30 days after the last dose, where each cycle is up to 28 days (up to approximately 38 months) ]Type, incidence, severity, causality and outcome of adverse events (AEs), including serious AEs and AEs at Grade 3 or above, based on National Cancer Institute Common Terminology Criteria for Adverse Events (NCI-CTCAE) Version 5.0.
- Part 1 and Part 2: Number of Participants with Dose Limiting Toxicity (DLT) of KB-0742 [ Time Frame: Cycle 1 Day 1 through Cycle 2 Day 1, where each cycle is up to 28 days ]
- Part 1: Maximally Tolerated Dose (MTD) of KB-0742 [ Time Frame: Cycle 1 Day 1 through Cycle 2 Day 1, where each cycle is up to 28 days ]
- Part 1: Recommended Phase 2 Dose (RP2D) of KB-0742 [ Time Frame: Cycle 1 Day 1 through Cycle 2 Day 1, where each cycle is up to 28 days ]
- Part 1: Maximal Plasma Concentration (Cmax) of KB-0742 [ Time Frame: Cycle 1 Day 1 through Cycle 2 Day 1, where a cycle is up to 28 days ]
- Part 2: Maximal Plasma Concentration (Cmax) of KB-0742 [ Time Frame: Cycle 1 Day 1 and Cycle 1 Day 10, where a cycle is up to 28 days ]
- Part 1: Time to Maximal Plasma Concentration (Tmax) of KB-0742 [ Time Frame: Cycle 1 Day 1 through Cycle 2 Day 1, where a cycle is up to 28 days ]
- Part 2: Time to Maximal Plasma Concentration (Tmax) of KB-0742 [ Time Frame: Cycle 1 Day 1 and Cycle 1 Day 10, where a cycle is up to 28 days ]
- Part 1: Area Under The Plasma Concentration x Time Curve From Hour 0 to The Last Measurable Time Point (AUC0-last) of KB-0742 [ Time Frame: Cycle 1 Day 1 through Cycle 2 Day 1, where a cycle is up to 28 days ]
- Part 2: Trough Concentration (Ctrough) of KB-0742 [ Time Frame: Cycle 1 Day 1 and Cycle 1 Day 10, where a cycle is up to 28 days ]
- Part 1 and Part 2: Progression Free Survival (PFS) [ Time Frame: Cycle 1 Day 1 up to 30 days after the last dose, where each cycle is up to 28 days (up to approximately 38 months) ]
- Part 1 and Part 2: Disease Control Rate [ Time Frame: Cycle 1 Day 1 up to 30 days after the last dose, where each cycle is up to 28 days (up to approximately 38 months) ]
- Part 1 and Part 2: Duration of Disease Control [ Time Frame: Cycle 1 Day 1 up to 30 days after the last dose, where each cycle is up to 28 days (up to approximately 38 months) ]
- Part 1 and Part 2: Overall Response Rate (ORR) [ Time Frame: Cycle 1 Day 1 up to 30 days after the last dose, where each cycle is up to 28 days (up to approximately 38 months) ]
- Part 1 and Part 2: Duration of Response (DOR) [ Time Frame: Cycle 1 Day 1 up to 30 days after the last dose, where each cycle is up to 28 days (up to approximately 38 months) ]

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.
Ages Eligible for Study: | 16 Years and older (Child, Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Males or females ≥ 18 years old (Parts 1 and 2A); males or females ≥ 16 years old (Part 2B)
- Willing and able to provide consent (and assent for patients between the ages of 16-18)
- Part 1: Histologically or cytologically confirmed solid tumors or non-Hodgkin lymphoma, which have failed, are intolerant to or are considered ineligible for standard-of-care anti-cancer treatments
- Part 2A: Histologically or cytologically confirmed solid tumors which have failed, are intolerant to or are considered ineligible for standard-of-care anti-cancer treatments; documentation of MYC genomic amplification/overexpression is required
- Part 2B: Histologically or cytologically confirmed soft tissue sarcomas with defined transcription factor oncogenic drivers
- Access to a tumor sample for central laboratory testing
- Eastern Cooperative Oncology Group Performance Status (ECOG PS) 0 or 1
- Evaluable or measurable disease, per Response Evaluation Criteria in Solid Tumors (RECIST) 1.1 for solid tumors or the Lugano Classification for non-Hodgkin lymphoma
- Adequate bone marrow and organ function
- Recovery from treatment-related toxicities from prior therapies to National Cancer Institute Common Terminology Criteria for Adverse Events (NCI-CTCAE) Grade ≤ 1 or to baseline level
- Must agree to use highly effective birth control during the trial and for at least 3 months after the last dose of study drug; female participants cannot be pregnant or breastfeeding
Exclusion Criteria:
- Any other anti-cancer therapies including chemotherapy, immunotherapy, or hormonal therapy within 4 weeks or 5 half-lives (whichever is shorter)
- History of surgery (except for diagnostic purposes) or non-palliative radiotherapy within 4 weeks
- History of allogeneic transplantation within 6 months
- Active central nervous system (CNS) involvement by the underlying malignancy; previously treated CNS metastatic disease is permitted with magnetic resonance imaging (MRI) documentation of stable disease for at least 3 months prior to study start
- History of stroke or intracranial hemorrhage within ≤6 months
- History of seizure
- Current use of medications associated with seizure
- Active infections requiring systemic antibiotic, antiviral or antifungal therapy
- Known active coronavirus disease 2019 (COVID-19)
- Clinically significant heart disease
- Uncontrolled hypertension
- Prolongation of QT interval at baseline
- Known human immunodeficiency virus (HIV), hepatitis B, or hepatitis C infection
- Significant concurrent, uncontrolled medical condition including, but not limited to, renal, hepatic, hematologic, gastrointestinal, endocrine, pulmonary, neurological, cerebral or psychiatric disease

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT04718675
Contact: Director of Clinical Operations | 650-484-1583 | clinicaltrials@kronosbio.com |
United States, California | |
City of Hope | Recruiting |
Duarte, California, United States, 91010 | |
Contact: Dr Villalona, MD | |
Cedars Sinai | Recruiting |
Los Angeles, California, United States, 90048 | |
Contact: Dr. Mita 800-233-2771 | |
United States, Missouri | |
Washington University | Recruiting |
Saint Louis, Missouri, United States, 63110 | |
Contact: Dr. Van Tine | |
United States, Tennessee | |
SCRI Tennessee Oncology | Recruiting |
Nashville, Tennessee, United States, 37203 | |
United States, Texas | |
Mary Crowley Cancer Research | Withdrawn |
Dallas, Texas, United States, 75230 | |
South Texas Accelerated Research Therapeutics | Recruiting |
San Antonio, Texas, United States, 78229 | |
Contact: Isabel Jimenez, RN, MSN isabel.jimenez@startsa.com |
Responsible Party: | Kronos Bio |
ClinicalTrials.gov Identifier: | NCT04718675 |
Other Study ID Numbers: |
KB-0742-1001 |
First Posted: | January 22, 2021 Key Record Dates |
Last Update Posted: | March 11, 2022 |
Last Verified: | March 2022 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | No |
Studies a U.S. FDA-regulated Drug Product: | Yes |
Studies a U.S. FDA-regulated Device Product: | No |
KB-0742 Relapsed Solid Tumors Refractory Solid Tumors Non-Hodgkin Lymphoma CDK9 Inhibitor |
Lymphoma Neoplasms Lymphoma, Non-Hodgkin Neoplasms by Histologic Type |
Lymphoproliferative Disorders Lymphatic Diseases Immunoproliferative Disorders Immune System Diseases |