Condition or disease | Intervention/treatment | Phase |
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Malignancy Non-hodgkin Lymphoma Multiple Myeloma Breast Cancer Ovarian Cancer Soft Tissue Sarcoma Head and Neck Cancer DLBCL Mantle Cell Lymphoma Follicular Lymphoma Pancreatic Cancer CLL Small Cell Lung Cancer Squamous Cell Carcinoma of Head and Neck Triple Negative Breast Cancer | Drug: CYT-0851 | Phase 1 Phase 2 |
Overexpression of activation-induced cytidine deaminase (AID) or other cytidine deaminases causes high rates of deoxyribonucleic acid (DNA) damage (mutations, double strand DNA breaks, and chromosome rearrangements) in a high number of patients with B-cell malignancies, such as NHL, MM, and CLL, and in a subset of patients with solid tumors, such as non-small cell lung cancer (NSCLC), sarcoma, breast cancer, ovarian cancer, and squamous cell carcinoma of the head and neck. Cancer cells that overexpress AID and other cytidine deaminases rely on RAD51, a protein involved in homologous recombination, to repair the DNA damage caused by cytidine deaminases. Inhibition of RAD51 with CYT-0851 in preclinical models induces cell death, tumor growth delay or tumor regression.
The Phase 1 part of the study will follow an accelerated titration design, which includes enrollment of single patient cohorts until certain criteria are met, followed by a standard 3+3 design. This design will allow for identification of a recommended phase 2 dose (RP2D) level while dosing the least number of patients as possible at potentially sub-therapeutic doses. In the Phase 2 part of the study, preliminary efficacy will be evaluated in 8 expansion cohorts (total n = 92-220), using a Simon two-stage design. The RP2D will be selected based on the MTD, the safety profile, PK, and available pharmacodynamics data generated from all subjects in Phase 1.
In both Phase 1 and Phase 2, patients will be treated in continuous 28-day cycles and all patients will be assessed for response every 2 cycles. Treatment will be terminated if the patient progresses, cannot tolerate treatment, or withdraws consent from active therapy. Patients will undergo a safety evaluation approximately 1 month (28-35 days) after the last dose. Patients will be followed for response until progression is documented.
Study Type : | Interventional (Clinical Trial) |
Estimated Enrollment : | 280 participants |
Allocation: | N/A |
Intervention Model: | Single Group Assignment |
Masking: | None (Open Label) |
Primary Purpose: | Treatment |
Official Title: | A Multi-Center, Open Label Phase 1/2 Study of CYT-0851, an Oral RAD51 Inhibitor, in Patients With Relapsed/Refractory B-Cell Malignancies and Advanced Solid Tumors |
Actual Study Start Date : | October 9, 2019 |
Estimated Primary Completion Date : | September 2021 |
Estimated Study Completion Date : | October 2021 |
Arm | Intervention/treatment |
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Experimental: Experimental: Active treatment
This is an open label study. All patients will receive single agent CYT-0851 administered orally.
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Drug: CYT-0851
All patients will receive CYT-0851 as a single agent
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Ages Eligible for Study: | 18 Years and older (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Key Phase 1 Inclusion Criteria
Histologically-proven B cell malignancies, meeting the following criteria:
Histologically-proven solid tumor meeting the following criteria:
Key Phase 2 Inclusion Criteria
Histologically-proven solid tumors:
Key Exclusion Criteria
Laboratory assessments
Contact: Judson Englert, MD | 857-285-4140 | clinicaltrials@cyteir.com | |
Contact: Susan Doleman | 857-285-4140 | clinicaloperations@cyteir.com |
Study Director: | Judson Englert, MD | Cyteir Therapeutics |
Tracking Information | |||||||||
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First Submitted Date ICMJE | June 24, 2019 | ||||||||
First Posted Date ICMJE | June 25, 2019 | ||||||||
Last Update Posted Date | February 2, 2021 | ||||||||
Actual Study Start Date ICMJE | October 9, 2019 | ||||||||
Estimated Primary Completion Date | September 2021 (Final data collection date for primary outcome measure) | ||||||||
Current Primary Outcome Measures ICMJE |
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Original Primary Outcome Measures ICMJE | Same as current | ||||||||
Change History | |||||||||
Current Secondary Outcome Measures ICMJE |
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Original Secondary Outcome Measures ICMJE | Same as current | ||||||||
Current Other Pre-specified Outcome Measures | Not Provided | ||||||||
Original Other Pre-specified Outcome Measures | Not Provided | ||||||||
Descriptive Information | |||||||||
Brief Title ICMJE | A Phase 1/2 Study of CYT-0851, an Oral RAD51 Inhibitor, in B-Cell Malignancies and Advanced Solid Tumors | ||||||||
Official Title ICMJE | A Multi-Center, Open Label Phase 1/2 Study of CYT-0851, an Oral RAD51 Inhibitor, in Patients With Relapsed/Refractory B-Cell Malignancies and Advanced Solid Tumors | ||||||||
Brief Summary | This clinical trial is an interventional, active-treatment, open-label, multi-center, Phase 1/2 study. The study objectives are to assess the safety, tolerability and pharmacokinetics (PK) of the oral RAD51 inhibitor CYT-0851 in patients with relapsed/refractory B-cell malignancies and advanced solid tumors and to identify a recommended Phase 2 dose for evaluation in these patients. | ||||||||
Detailed Description |
Overexpression of activation-induced cytidine deaminase (AID) or other cytidine deaminases causes high rates of deoxyribonucleic acid (DNA) damage (mutations, double strand DNA breaks, and chromosome rearrangements) in a high number of patients with B-cell malignancies, such as NHL, MM, and CLL, and in a subset of patients with solid tumors, such as non-small cell lung cancer (NSCLC), sarcoma, breast cancer, ovarian cancer, and squamous cell carcinoma of the head and neck. Cancer cells that overexpress AID and other cytidine deaminases rely on RAD51, a protein involved in homologous recombination, to repair the DNA damage caused by cytidine deaminases. Inhibition of RAD51 with CYT-0851 in preclinical models induces cell death, tumor growth delay or tumor regression. The Phase 1 part of the study will follow an accelerated titration design, which includes enrollment of single patient cohorts until certain criteria are met, followed by a standard 3+3 design. This design will allow for identification of a recommended phase 2 dose (RP2D) level while dosing the least number of patients as possible at potentially sub-therapeutic doses. In the Phase 2 part of the study, preliminary efficacy will be evaluated in 8 expansion cohorts (total n = 92-220), using a Simon two-stage design. The RP2D will be selected based on the MTD, the safety profile, PK, and available pharmacodynamics data generated from all subjects in Phase 1. In both Phase 1 and Phase 2, patients will be treated in continuous 28-day cycles and all patients will be assessed for response every 2 cycles. Treatment will be terminated if the patient progresses, cannot tolerate treatment, or withdraws consent from active therapy. Patients will undergo a safety evaluation approximately 1 month (28-35 days) after the last dose. Patients will be followed for response until progression is documented. |
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Study Type ICMJE | Interventional | ||||||||
Study Phase ICMJE | Phase 1 Phase 2 |
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Study Design ICMJE | Allocation: N/A Intervention Model: Single Group Assignment Masking: None (Open Label) Primary Purpose: Treatment |
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Condition ICMJE |
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Intervention ICMJE | Drug: CYT-0851
All patients will receive CYT-0851 as a single agent
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Study Arms ICMJE | Experimental: Experimental: Active treatment
This is an open label study. All patients will receive single agent CYT-0851 administered orally.
Intervention: Drug: CYT-0851
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Publications * | Lamont KR, Hasham MG, Donghia NM, Branca J, Chavaree M, Chase B, Breggia A, Hedlund J, Emery I, Cavallo F, Jasin M, Rüter J, Mills KD. Attenuating homologous recombination stimulates an AID-induced antileukemic effect. J Exp Med. 2013 May 6;210(5):1021-33. | ||||||||
* Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline. |
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Recruitment Information | |||||||||
Recruitment Status ICMJE | Recruiting | ||||||||
Estimated Enrollment ICMJE |
280 | ||||||||
Original Estimated Enrollment ICMJE |
165 | ||||||||
Estimated Study Completion Date ICMJE | October 2021 | ||||||||
Estimated Primary Completion Date | September 2021 (Final data collection date for primary outcome measure) | ||||||||
Eligibility Criteria ICMJE |
Key Phase 1 Inclusion Criteria
Key Phase 2 Inclusion Criteria
Key Exclusion Criteria
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Sex/Gender ICMJE |
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Ages ICMJE | 18 Years and older (Adult, Older Adult) | ||||||||
Accepts Healthy Volunteers ICMJE | No | ||||||||
Contacts ICMJE |
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Listed Location Countries ICMJE | United States | ||||||||
Removed Location Countries | |||||||||
Administrative Information | |||||||||
NCT Number ICMJE | NCT03997968 | ||||||||
Other Study ID Numbers ICMJE | CYT-0851-01 | ||||||||
Has Data Monitoring Committee | Yes | ||||||||
U.S. FDA-regulated Product |
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IPD Sharing Statement ICMJE |
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Responsible Party | Cyteir Therapeutics, Inc. | ||||||||
Study Sponsor ICMJE | Cyteir Therapeutics, Inc. | ||||||||
Collaborators ICMJE | Not Provided | ||||||||
Investigators ICMJE |
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PRS Account | Cyteir Therapeutics, Inc. | ||||||||
Verification Date | January 2021 | ||||||||
ICMJE Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP |