DKN-01 with or without Docetaxel in Treating Patients with Advanced Prostate Cancer with Elevated DKK1
- Have a histologically or cytologically confirmed cancer of prostate origin (adenocarcinoma, poorly differentiated carcinoma, or neuroendocrine carcinoma are all allowed)
- Patients with pure neuroendocrine carcinoma must have had at least one line of platinum-based chemotherapy unless the patient is intolerant of or is refusing chemotherapy
- Surgically or medically castrated, with testosterone levels of < 50 ng/dL (< 2.0 nM). If the patient is being treated with luteinizing hormone-releasing hormone (LHRH) agonists (patient who have not undergone orchiectomy), this therapy must have been initiated at least 4 weeks prior to cycle 1, day 1 (C1D1) and must be continued throughout the study
- Cohorts 1A and 1B. Patients must have progressed despite 1 or more androgen receptor (AR) signaling inhibitors (abiraterone or enzalutamide) and have not received prior taxane-based chemotherapy for prostate cancer. Prior treatment with an AR signaling inhibitor for castration-sensitive disease will be allowed if the time to progression was within 1 year after starting drug. Prior treatment with a taxane-based chemotherapy for castration-sensitive disease will be exclusionary
- Cohorts 2A and 2B. Patients must have progressed despite 1 or more AR signaling inhibitor (abiraterone or enzalutamide) and either had disease progression, were intolerant of, or refused 1 or more taxane-based chemotherapies for metastatic castration-resistant prostate cancer (mCRPC)
- Patients must be DKK1 elevated as determined by either: * Elevated DKK1 ribonucleic acid (RNA) expression in >= 1% of cells as defined by central laboratory testing of a fresh biopsy or archival specimen OR * A genomic alteration in any of the following Wnt signaling genes (APC, CTNNB1, RNF43, ZNRF3, RSPO2, RSPO3, AXIN1, AXIN2) designated as likely pathogenic by a local Clinical Laboratory Improvement Act (CLIA)-certified laboratory testing of blood or tumor tissue. Gene variants of unknown significance are generally not allowed but may be considered with medical monitor approval
- Cohort 1B. Patients must have measurable disease per RECIST version (v) 1.1 guidelines AND must have either: * PSA progression is defined by Prostate Cancer Working Group 3 (PCWG3) criteria as a minimum of two consecutive rising levels, with an interval of >= 1 week between each determination with a minimum PSA of 1 ng/mL, if PSA is the sole evidence of progression, OR * Radionuclide bone progression as defined by at least two new metastatic lesions (per PCWG3), OR * Soft tissue progression on transaxial imaging: new or progressive soft tissue masses on computed tomography (CT) or magnetic resonance imaging (MRI) scans as defined by RECIST v1.1
- Cohorts 1A, 2A, 2B. Patients must have baseline progression defined as one of the following: * PSA progression is defined by PCWG3 criteria as a minimum of two consecutive rising levels, with an interval of >= 1 week between each determination with a minimum PSA of 2 ng/mL * Radionuclide bone progression as defined by at least two new metastatic lesions (per PCWG3) * Soft tissue progression on transaxial imaging: new or progressive soft tissue masses on computed tomography (CT) or magnetic resonance imaging (MRI) scans as defined by RECIST v1.1
- Eastern Cooperative Oncology Group (ECOG) performance status (PS) of 0 or 1
- Estimated life expectancy of at least 3 months, in the judgment of the investigator
- Disease-free of active second/secondary or prior malignancies for >= 2 years with the exception of currently treated basal cell, squamous cell carcinoma of the skin, or carcinoma in-situ of the cervix or breast
- Total bilirubin within normal limits for the institution (for Cohorts 2A and 2B, total bilirubin < 3 x upper limit of normal [ULN] is acceptable with known liver metastases) (within 14 days of C1D1)
- For Cohorts 1A, 1B transaminases (aspartate aminotransferase [AST] and alanine aminotransferase [ALT]) =< 1.5 x ULN (for Cohorts 2A and 2B, AST and ALT =< 5.0 x ULN is acceptable with known liver metastases)
- Creatinine =< 2.0 or calculated creatinine clearance >= 50 mL/min using the Cockcroft and Gault Method (within 14 days of C1D1)
- Absolute neutrophil count (ANC) >= 1000 cells/ul (within 14 days of C1D1)
- Absolute lymphocyte count >= 500/ul (within 14 days of C1D1)
- Hemoglobin >= 9.0 g/dL (within 14 days of C1D1)
- Platelet count >= 100,000 cells/ul. (for Cohorts 2A and 2B, platelet count >= 75,000 cells/ul) (within 14 days of C1D1)
- International normalized ratio (INR) (prothrombin time [PT])/partial thromboplastin time (PTT) =< 1.5 x ULN unless receiving anticoagulant, in which case INR =< 3.0 and no active bleeding, (ie, no clinically significant bleeding within 14 days prior to first dose of study therapy (within 14 days of C1D1)
- Sexually active male patients must agree to use adequate contraception (hormonal or barrier method of birth control) during the study and for 6 months after their last dose of study drug. Should a patient’s partner become pregnant or suspect she is pregnant while participating in the study, the Investigator should be immediately informed
- Reliable and willing to make themselves available for the duration of the study and are willing to follow study-specific procedures
- Provided written informed consent prior to any study-specific procedures
- Any anti-cancer therapy (with the exception of LHRH analog) within 2 weeks prior to initiation of study treatment
- Any investigational anti-cancer therapy within 4 weeks of initiation of study treatment
- New York Heart Association Class III or IV heart failure, or myocardial infarction within the past 6 months, or unstable arrhythmia within 3 months
- Uncontrolled bacterial, viral, or fungal infections, within 7 days of study entry
- Known to be human immunodeficiency virus (HIV) positive, have positive hepatitis B surface antigen (HBSAg), or positive hepatitis C antibody (HCAb) test. (Hepatitis C antibody-positive patients with an undetectable hepatitis C virus [HCV] RNA will be eligible.)
- History of solid organ transplant (ie, heart, lungs, liver, or kidney)
- History of autologous/allogenic bone marrow transplant
- Serious nonmalignant disease that could compromise protocol objectives in the opinion of the investigator and/or sponsor
- Major surgical procedures or significant traumatic injury within 4 weeks prior to study entry (minor procedures within 1 week of study entry)
- History of osteonecrosis of the hip. Other hip pathology such as degenerative disease or malignant involvement are not exclusionary. Screening of asymptomatic patients is not required
- Active or untreated central nervous system (CNS) malignancy or metastasis. Screening for CNS metastases of asymptomatic patients without a history of CNS metastases is not required. Patients with treated CNS metastases are eligible provided they meet all of the following criteria: * Evaluable disease outside the CNS * No history of intracranial or intraspinal hemorrhage * No evidence of significant vasogenic edema * No ongoing requirement for corticosteroids as therapy for CNS disease. (Anticonvulsants at a stable dose for > one month is allowed.) * No stereotactic radiation, whole brain radiation within 4 weeks of C1D1 * Patients with CNS metastases treated by neurosurgical resection or brain biopsy within 3 month prior to C1D1 will not be allowed * Radiographic demonstration of interim stability (ie, no progression) between completion of CNS-directed therapy and the screening radiographic study * Screening CNS radiographic study >= 4 weeks since completion of radiotherapy or surgical resection and >= 2 weeks since discontinuation of corticosteroids
- Any other condition, disease, metabolic dysfunction, physical examination finding, or clinical laboratory finding giving reasonable suspicion of a disease or condition that contraindicates the use of an investigational drug or that may affect the interpretation of the results or render the patient at high risk from treatment complications
- Active substance abuse
- Receipt of any live vaccine within 30 days before the first dose of study treatment or anticipation that such a live vaccine will be required during study participation
- Previously treated with an anti-DKK1 therapy
I. To determine the safety, tolerability, dose-limiting toxicities (DLTs) and maximum-tolerated dose (MTD) of DKK1-neutralizing monoclonal antibody DKN-01 (DKN-01) administered alone and in combination with docetaxel in patients with advanced prostate cancer with elevated DKK1. (Part 1: Dose Escalation)
II. To evaluate the anti-tumor activity of DKN-01 in combination with docetaxel in patients with advanced prostate cancer with elevated DKK1. (Part 2: Dose Expansion)
I. To determine the anti-tumor activity of DKN-01 as monotherapy using Immune-related Response Evaluation Criteria in Solid Tumors (iRECIST).
II. To characterize the pharmacodynamics effects of DKN-01 administered as monotherapy or in combination with docetaxel.
III. To characterize the pharmacokinetics (PK) of DKN-01 administered as monotherapy or in combination with docetaxel.
IV. To characterize the immunogenicity if DKN-01 administered as monotherapy or in combination with docetaxel.
I. To determine the effect of DKN-01 monotherapy on peripheral and intratumoral immune cell abundance and activation.
II. To explore the association between DKN-01 exposure, peripheral and intratumoral immune cell abundance and activation, anti-tumor activity, and key safety measures.
III. To determine the impact of docetaxel on peripheral and intratumoral immune cell abundance and activation.
IV. To determine the concordance between plasma and intratumoral DKK1 levels and determine the association between DKK1 level, Wnt pathway alteration, and anti-tumor activity.
V. To determine the effect of DKN-01 as monotherapy or in combination with docetaxel on ex-vivo intratumoral immune cell abundance and activation in a 3-dimensional organotypic culture model.
VI. To explore the association between response to study drug treatment and clinical evidence of “prostate-specific antigen (PSA)-high” (concordant radiographic and PSA progression) and “PSA-low” (radiographic evidence in the absence of PSA progression) prostate cancer.
OUTLINE: This is a phase Ib, dose-escalation study of DKK1-neutralizing monoclonal antibody DKN-01 followed by a phase IIa study. Patients are assigned to 1 of 2 cohorts.
COHORT I: Patients receive DKN-01 intravenously (IV) over 30-120 minutes on days 1 and 15, and docetaxel IV over 60 minutes on day 1. Cycles repeat every 21 days in the absence of disease progression or unacceptable toxicity.
COHORT II: Patients receive DKN-01 IV over 30-120 minutes on days 1 and 15. Cycles repeat every 28 days in the absence of disease progression or unacceptable toxicity.
After completion of study treatment, patients are followed for at 30, 60, and 100 days and then every 3 months for 2 years.
Trial Phase Phase I/II
Trial Type Treatment
Laura and Isaac Perlmutter Cancer Center at NYU Langone
David R. Wise
- Primary ID s17-01747
- Secondary IDs NCI-2019-00431
- Clinicaltrials.gov ID NCT03837353