E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Treatment of solid tumors, including advanced/unresectable or metastatic cancer and neoadjuvant/resectable |
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E.1.1.1 | Medical condition in easily understood language |
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E.1.1.2 | Therapeutic area | Diseases [C] - Cancer [C04] |
MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 20.0 |
E.1.2 | Level | LLT |
E.1.2 | Classification code | 10007050 |
E.1.2 | Term | Cancer |
E.1.2 | System Organ Class | 100000004864 |
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E.1.3 | Condition being studied is a rare disease | No |
E.2 Objective of the trial |
E.2.1 | Main objective of the trial |
Part A:
• To obtain evidence of antitumor effect of CX-072 in combination with ipilimumab in subjects with solid tumors based on the objective response rate (ORR) as defined by the Response Evaluation Criteria in Solid Tumours (RECIST) v1.1
Part B:
• To obtain evidence of antitumor effect of CX-072 in combination with ipilimumab in subjects with solid tumors based on pathologic response following neoadjuvant administration of combination treatment
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E.2.2 | Secondary objectives of the trial |
Part A:
• Safety and tolerability of CX-072 in combination with ipilimumab in subjects with solid tumors
• Evaluate antitumor activity in subjects with solid tumors treated with CX-072 in combination with ipilimumab
• Characterize the pharmacokinetics (PK) of CX-072 and ipilimumab
• Characterize the incidence of CX-072 antidrug antibodies (ADAs) and ipilimumab ADAs
Part B:
• Safety and tolerability of CX-072 in combination with ipilimumab in subjects with solid tumors
• Evaluate antitumor activity in subjects with solid tumors treated with CX-072 in combination with ipilimumab
• Characterize the PK profile of CX-072 and ipilimumab
• Characterize the incidence of CX-072 ADAs and ipilimumab ADAs
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
1. At least 18 years of age
2. Measurable disease as defined by RECIST v1.1
3. Eastern Cooperative Oncology Group (ECOG) performance status of ≤1
4. Agree to provide tumor tissue and blood samples for biomarker assessment
• Part A: Must agree to provide mandatory archival tumor tissue (formalin-fixed paraffin embedded tumor block or unstained slides) or undergo a new tumor biopsy
• Part B: Must agree to provide tumor tissue from the initial diagnostic biopsy and prospectively agree to provide tumor tissue obtained from surgery on study for pathologic analysis and for biomarker assessment
5. Subjects with treated brain metastases are eligible if the brain metastases are stable (no magnetic resonance imaging [MRI] evidence of progression for at least 8 weeks after treatment is complete and within 28 days prior to first dose of study treatment) and the subject does not require radiation therapy or steroids. Active screening for brain metastases (eg, brain computed tomography [CT] or MRI) is not required
6. Screening laboratory values must meet all of the following criteria:
• White blood cells >2000/µL or 2.0 × 10 to the power of 9/L
• Neutrophils ≥1500/µL or 1.5 × 10 to the power of 9/L
• Platelets ≥100 × 10 to the power of 3/µL or 100 × 10 to the power of 9/L
• Hemoglobin ≥9.0 g/dL (may have been transfused) or 90.0 g/L
• Creatinine ≤2 mg/dL or 176.8 µmol/L OR measured or calculated creatinine clearance (glomerular filtration rate can also be used in place of creatinine or creatinine clearance) >50 mL/min
• AST and ALT ≤2.5 × upper limit of normal (ULN)
• Total bilirubin within ULN (unless diagnosed with Gilbert’s syndrome, those subjects must have a total bilirubin <3.0 mg/dL or 51.3 µmol/L)
• Amylase and lipase ≤1.5 × ULN
• International normalized ratio (INR) and activated partial thromboplastin time (aPTT) ≤1.5 × ULN (unless subject is on therapeutic anticoagulation, at which time the INR and aPTT must be in the target therapeutic anticoagulation range)
• Serum albumin ≥2.5 g/dL
7. Females of childbearing potential and nonsterile males must agree to practice highly effective methods of birth control (as described in Appendix C) for the duration of the study and for 6 months after the last dose of study treatment
8. The ability to understand and the willingness to sign a written ICF and adhere to study schedule and prohibitions
See additional cohort-specific inclusion criteria in Sections 4.2, 4.3, 4.4, and 4.5 of the Protocol. |
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E.4 | Principal exclusion criteria |
1. Treatment with cytotoxic chemotherapy, biologic agents, radiation, immunotherapy, or any investigational agent within 28 days prior to the first dose of study tr. This interval can be reduced to 2 weeks for subjects who received bone-only radiation therapy or for subjects whose most recent prior therapy was a single-agent, small-molecule kinase inhibitor having a half-life of 3 days or less.
- For Cohort A2: Prior anti-PD-1/PD-L1 antibody given as a single agent is not excluded within the 28 days prior to the first dose of study treatment. Time from last dose of prior anti-PD-1/PD-L1 inhibitor to first dose of study treatment must be at least the same length as the time interval of the prior PD-1/PD-L1 dosing schedule (eg, if prior PD-1/PD-L1 dosing was once every 14 days, then the last dose must have been at least 14 days prior to first dose of study tr)
2. Prior therapy with a chimeric antigen receptor T cell–containing regimen
3. History of active autoimmune disease(s) including but not limited to inflammatory bowel diseases, rheumatoid arthritis, autoimmune thyroiditis, autoimmune hepatitis, systemic sclerosis, systemic lupus erythematosus, autoimmune vasculitis, autoimmune neuropathies, type 1 insulin-dependent diabetes mellitus
4. History of myocarditis regardless of the cause
5. History of intolerance to prior checkpoint inhibitor therapy defined as the need to discontinue treatment due to an irAE
6. History of toxic epidermal necrolysis or Stevens-Johnson syndrome
7. History of any syndrome or medical condition that required treatment with systemic steroids (≥10 mg daily prednisone equivalents) or immunosuppressive medications. However, subjects who required brief courses of steroids (eg, as prophylaxis for IV contrastor for treatment of an allergic reaction) may be eligible with Sponsor approval. Inhaled or topical steroids are permitted.
8. Baseline corrected QT interval (QTc) >470 ms. If a subject starts on a QTc prolonging drug(s), a series of electrocardiograms (ECGs) should be obtained to redefine the baseline QTc.
9. Unresolved acute toxicity CTCAE v5.0 Grade ≥1 (or baseline, whichever is greater) from prior anticancer therapy. Alopecia and other nonacute toxicities are acceptable.
10. History of severe allergic or anaphylactic reactions to human mAb therapy or known hypersensitivity to any Probody therapeutic
11. Subjects with known human immunodeficiency virus, acquired immune deficiency syndrome, or any related illness
12. Subjects with acute or chronic hepatitis B or C
13. History of allogeneic tissue/solid organ transplant, stem cell transplant, or bone marrow transplant
14. Major surgery (eg, that required general anesthesia) within 4 weeks prior to the first dose of study treatment (and must be confirmed to be completely healed), or minor surgery (eg, not
involving chest, abdomen, or intracranial structures) or gamma knife treatment (with adequate healing) within 14 days prior to first dose of study treatment (excluding biopsies conducted with local/topical anesthesia) if complete healing is confirmed
15. History of active malignancy not related to the cancer being treated within the previous 2 years, with the exception of localized cancers that are considered cured and, in the opinion of the Investigator, present a low risk for recurrence. These exceptions include, but are not limited to, basal or squamous cell skin cancer, superficial bladder cancer, and carcinoma in situ of the prostate, cervix, or breast.
16. Received a live vaccine within 30 days prior to the first dose of study treatment. Examples of live vaccines include, but are not limited to, the following: measles, mumps, rubella, chicken pox/zoster, yellow fever, rabies, Bacillus Calmette-Guérin, and typhoid vaccine.
17. Intercurrent illness including, but not limited to:
• Ongoing severe aortic stenosis
• Myocardial infarction or stroke within 24 weeks prior to first dose of study treatment
• Any of the following within 12 weeks prior to first dose of study treatment: symptomatic congestive heart failure (ie, New York Heart Association Class III or IV), unstable angina pectoris, or clinically significant and uncontrolled cardiac arrhythmia
• Nonhealing wound or ulcer within 4 weeks prior to Cycle 1 Day 1
• Active infection requiring systemic antiviral, antibiotic, or antifungal therapy within 5 days prior to first dose of study treatment
18. Pleural or pericardial effusion or ascites requiring drainage ≥1 time(s) per month
19. History of multiple myeloma
20. Women who are pregnant or breastfeeding
21. Any condition, in the Investigator’s opinion, that would limit the subject’s compliance with study requirements
22. Participating in an ongoing interventional clinical study (eg, medication, radiation, procedures) unless the subject is only being followed for long-term outcomes
See additional cohort-specific exclusion criteria in Sections 4.7 and 4.8 of the Protocol. |
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E.5 End points |
E.5.1 | Primary end point(s) |
- Objective response rate (ORR) as defined by the Response Evaluation Criteria in Solid Tumours (RECIST) v1.1 as defined in the Common Core Protocol (Appendix A)
- Pathologic response following neoadjuvant administration of combination treatment
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
PART A: Radiographic Tumor Assessment and Tumor Response Evaluation : At screening and Scan q8w (±1w) for 12 months and q12w (±1w) thereafter until confirmed progression as assessed by irRECIST
PART B: Pathologic Response Assessment: Study day 43
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E.5.2 | Secondary end point(s) |
PART A:
- Adverse Event Assessment
- Objective response rate (ORR) as defined by the Response Evaluation Criteria in Solid Tumours (RECIST) v1.1
- Duration of response (DOR)
- Time to response (TTR)
- Progression-free survival (PFS)
- Overall survival (OS)
- PK
- CX-072 antidrug antibodies (ADAs) and ipilimumab ADAs
PART B:
- Adverse Event Assessment
- Objective response rate (ORR) as defined by the Response Evaluation Criteria in Solid Tumours (RECIST) v1.1 prior to surgery
- Relapse-free survival (RFS)
- PK
- CX-072 antidrug antibodies (ADAs) and ipilimumab ADAs |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
PART A:
- Radiographic Tumor Assessment and Tumor Response Evaluation : At screening and Scan q8w (±1w) for 12 months and q12w (±1w) thereafter until confirmed progression as assessed by irRECIST
- CX-072 ADAs: Study day 1, 22, 64, 85, 127, then q42d, Last Tx Day +30d (-2/+7d), Last Tx Day +90d then q90d (±14d)
- Ipilimumab ADAs: Study day 1, 64
PART B:
- Radiographic Tumor Assessment and Tumor Response Evaluation : At screening, study day 40, Scan q12w (±1w) until relapse
- CX-072 ADAs: Study day 1, 22, 85, 106, 127, 155, 183, then q14d, Last Tx Day +30d (-2/+7d), Last Tx Day +90d then q90d (±14d)
- Ipilimumab ADAs: Study day 1, 106
PART A & B:
- Adverse Event Assessment per Protocol
- Collect PK samples as shown in Table 3 of Protocol
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E.6 and E.7 Scope of the trial |
E.6 | Scope of the trial |
E.6.1 | Diagnosis | No |
E.6.2 | Prophylaxis | No |
E.6.3 | Therapy | Yes |
E.6.4 | Safety | Yes |
E.6.5 | Efficacy | Yes |
E.6.6 | Pharmacokinetic | Yes |
E.6.7 | Pharmacodynamic | Yes |
E.6.8 | Bioequivalence | No |
E.6.9 | Dose response | No |
E.6.10 | Pharmacogenetic | No |
E.6.11 | Pharmacogenomic | No |
E.6.12 | Pharmacoeconomic | No |
E.6.13 | Others | No |
E.7 | Trial type and phase |
E.7.1 | Human pharmacology (Phase I) | No |
E.7.1.1 | First administration to humans | No |
E.7.1.2 | Bioequivalence study | No |
E.7.1.3 | Other | No |
E.7.1.3.1 | Other trial type description | |
E.7.2 | Therapeutic exploratory (Phase II) | Yes |
E.7.3 | Therapeutic confirmatory (Phase III) | No |
E.7.4 | Therapeutic use (Phase IV) | No |
E.8 Design of the trial |
E.8.1 | Controlled | No |
E.8.1.1 | Randomised | No |
E.8.1.2 | Open | Yes |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | No |
E.8.1.5 | Parallel group | No |
E.8.1.6 | Cross over | No |
E.8.1.7 | Other | No |
E.8.2 | Comparator of controlled trial |
E.8.2.1 | Other medicinal product(s) | No |
E.8.2.2 | Placebo | No |
E.8.2.3 | Other | No |
E.8.3 |
The trial involves single site in the Member State concerned
| No |
E.8.4 | The trial involves multiple sites in the Member State concerned | Yes |
E.8.4.1 | Number of sites anticipated in Member State concerned | 3 |
E.8.5 | The trial involves multiple Member States | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 12 |
E.8.6 Trial involving sites outside the EEA |
E.8.6.1 | Trial being conducted both within and outside the EEA | Yes |
E.8.6.2 | Trial being conducted completely outside of the EEA | No |
E.8.6.3 | If E.8.6.1 or E.8.6.2 are Yes, specify the regions in which trial sites are planned |
Netherlands |
Spain |
United Kingdom |
United States |
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E.8.7 | Trial has a data monitoring committee | Yes |
E.8.8 |
Definition of the end of the trial and justification where it is not the last
visit of the last subject undergoing the trial
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E.8.9 Initial estimate of the duration of the trial |
E.8.9.1 | In the Member State concerned years | 3 |
E.8.9.1 | In the Member State concerned months | |
E.8.9.1 | In the Member State concerned days | |
E.8.9.2 | In all countries concerned by the trial years | 3 |