FIH XON7 in Advanced/Metastatic Solid Tumors

Phase 1

Recruiting

• Conditions: Advanced Solid Tumor; Metastatic Cancer
• Interventions: Drug: XON7

• Registration Number: NCT06154291
• Lead Sponsor: Xenothera SAS

Brief Summary

This is a two-stage trial consisting of a Part I, dose escalation and dose-finding component to establish the Maximal Tolerated Dose (MTD), if any, and Recommended Part 2 Dose (RP2D) of XON7, followed by a Part II component to investigate anti-tumors efficacy in selected solid tumor types and to further evaluate safety and tolerability of XON7 at RP2D.

Detailed Description

Not available

Study Timeline

• Study First Submitted: 2023-11-06
• Study Start: 2023-11-14
• Study First Submitted QC: 2023-12-01
• Study First Posted: 2023-12-04
• Status Verified: 2025-04
• Last Update Submitted: 2025-04-02
• Last Update Posted: 2025-04-06
• Primary Completion: 2026-12
• Study Completion: 2027-11

Recruitment & Eligibility

• Status: RECRUITING
• Sex: All
• Target Recruitment: 255

Inclusion Criteria

1. Provide signed, written informed consent.

2. Male and female participant, age ≥ 18 years old (at the time consent is obtained)

3. Solid tumors indications:

   • Participant in phase I, must have a histologically or cytologically confirmed advanced or metastatic solid tumors for which no effective standard therapy is available. All tumor types except glioblastoma, could be included.
   • Participant in phase II, must have histologically or cytologically confirmed advanced or metastatic solid tumors of the following: NSCLC, gastro-esophageal adenocarcinoma, CRC, pancreatic cancer, Sarcoma, TNBC, or ovarian cancer.

4. Line of treatment: Participant must have solid tumors progressing after ≤ 4 lines of standard appropriate anticancer therapies for the specific tumor type, or for which the patient is ineligible. Participants whose cancers harbor molecular alterations for which targeted therapy is standard of care should have received health authority-approved appropriate targeted therapy for their tumor types before enrollment.

5. Measurable disease per RECIST version 1.1 - v5

6. (ECOG) performance status (PS) 0-1

7. Life expectancy of at least 12 weeks.

8. Adequate organ function

9. QT duration corrected for heart rate by Fridericia's formula (QTcF) <450 msec or QTcF <480 msec for participants with bundle branch block.

10. In France, a participant will be eligible for inclusion in this trial only if either affiliated to or a beneficiary of a social security category.

11. Female participant who are not of child-bearing potential, and female participants of child-bearing potential who have a negative serum pregnancy test within 7 days prior to initial trial treatment. Female participants of child-bearing potential, and all male partners must consent to use a medically acceptable method of contraception throughout the trial period and for at least 60 days after the last dose of XON7. A barrier method of contraception must be included.

12. Male participant willing to use adequate contraceptive measures throughout the trial period and for at least 60 days after the last dose of trial intervention.

13. For phase II, participant in pharmacodynamics cohort must provide biopsy of a tumor lesion not previously irradiated during the screening period and must agree to provide at least one additional on-treatment biopsy between day 36 and 42 after trial intervention administration.

14. For phase II, participant in pharmacodynamics cohort must have accessible tumor tissue available for fresh biopsy except for ovarian cancer and sarcoma.

Exclusion Criteria

1. A participant who has received more than 4 prior lines of therapy for advanced or metastatic disease.

2. A participant who has had a prior anti-cancer mAb within 3 weeks prior to trial Day 1 or who has not recovered (i.e., ≤ Grade 1 or at baseline) from adverse events due to agents administered more than 4 weeks earlier prior to trial Day 1.

3. A participant who has had prior chemotherapy, targeted small molecule therapy, or radiation therapy within 2 weeks prior to trial Day 1 or who have not recovered (i.e., ≤ Grade 1 or at baseline) from adverse events due to a previously administered agent (Except alopecia, hearing loss, grade 2 neuropathy or endocrinopathy managed with replacement therapy).

4. A participant with ≥Grade 3 toxicity related to prior immunotherapy leading to treatment discontinuation.

5. A participant whose toxicity related to prior treatment has not resolved to Grade 1 (except alopecia, hearing loss, grade 2 neuropathy or endocrinopathy managed with replacement therapy).

6. A participant who has received major surgery 2 weeks before the first dose of trial treatment or has not recovered adequately from the toxicity and/or complications from any surgery (major or minor) before initiating trial treatment.

7. Concomitant use of another experimental drug, or wash-out period of at least 5 half-lives for a previous experimental drug not completed before start of trial intervention

8. Participant treated with drugs known to prolong the QT interval

9. Participant with carcinomatous meningitis.

10. Central nervous system (CNS) metastases, with the exception of individuals who have been previously treated CNS metastases, are asymptomatic, and have had no requirement for steroids for 3 weeks prior to first dose of trial drug.

11. Malignancies other than disease under trial within 3 years prior to first dose of trial intervention.

12. History of autoimmune disease

13. Active or uncontrolled infections requiring systemic treatment (known human immunodeficiency virus infection, or positive test for hepatitis B surface antigen or hepatitis C).

14. Any severe and/or uncontrolled medical conditions or other conditions that could affect their participation in the trial such as history or evidence of cardiovascular risk including any of the following:

    • Recent (within the past 6 months) history of serious uncontrolled cardiac arrhythmia or clinically significant ECG abnormalities including second degree (Type II) or third-degree atrioventricular block.
    • Documented cardiomyopathy, myocardial infarction, acute coronary syndromes (including unstable angina pectoris), coronary angioplasty, stenting, or bypass grafting within the past 6 months before enrollment.
    • Documented congestive heart failure (Class II, III, or IV) as defined by the New York Heart Association functional classification system (NYHA, 1994).

15. Prior allogeneic or autologous bone marrow transplantation or other solid organ transplantation.

16. Current active liver or biliary disease (Except for Gilbert's syndrome or asymptomatic gallstones, liver metastases, or otherwise stable chronic liver disease per investigator assessment).

17. Concurrent medical condition requiring the use of systemic immunosuppressive medications within 28 days before the first dose of trial treatment.

18. Recent history (within the past 6 months) of acute diverticulitis, inflammatory bowel disease, intra-abdominal abscess, or gastrointestinal obstruction.

19. Current or history of idiopathic pulmonary fibrosis, interstitial lung disease, or organizing pneumonia. Note: post-radiation changes in the lung related to prior radiotherapy and/or asymptomatic radiation-induced pneumonitis not requiring treatment may be permitted if agreed by the investigator and Medical Monitor.

20. History of (non-infectious) pneumonitis that required steroids or current pneumonitis.

21. Recent history (within 6 months) of uncontrolled symptomatic ascites or pleural effusions.

22. Participant who has received transfusion of blood products (including platelets or red blood cells) or administration of colony stimulating factors (including granulocyte colony- stimulating factor [G-CSF], granulocyte-macrophage colony-stimulating factor [GM- CSF], recombinant erythropoietin) within 2 weeks before the first dose of trial intervention.

23. Known, current drug or alcohol abuse.

24. Female participant who is pregnant or lactating.

25. Psychological, familial, sociological, or geographical conditions that do not permit compliance with the protocol.

26. Inability or unwillingness to comply with trial and/or follow-up procedures outlined in the protocol.

27. For France, patients under legal protection (safeguard, guardianship, curatorship)

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Arm && Interventions

Group	Intervention	Description
Dose Escalation part then Expansion part	XON7	Dose Escalation part: Six dose levels are planned: 1.5; 3; 6; 12; 16 and 20mg/kg Expansion part: Up to 7 cohorts (1 cohort for one selected solid tumor type) could be investigated: Cohort E1: Non-small cell lung cancer (NSCLC) Cohort E2: Gastro-esophageal adenocarcinoma Cohort E3: Colorectal cancer (CRC) Cohort E4: Pancreatic cancer Cohort E5: Sarcoma Cohort E6: Triple-negative breast cancer (TNBC) Cohort E7: Ovarian cancer

Primary Outcome Measures

Name	Time	Method
Dose Escalation part: Dose Limiting Toxicities (DLTs)	At the end of Cycle 1 (28 days)	Investigator defined DLT during first treatment cycle
Dose Escalation part: treatment emergent adverse events (TEAEs)	At the end of Cycle 1 (28 days)	An overall summary of AE occurrences with onset during the first treatment cycle will be presented; this will include the following AE attributes: * Preferred term,; * Maximum CTCAE grade,; * Outcome,; * Time to first occurrence \[days\].
Dose Escalation part: clinically significant changes in Leucocytes count	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Leucocytes Count (G/L)
Dose Escalation part: clinically significant changes in Red Blood Cells Count	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Red Blood Cells Count (T/L)
Dose Escalation part: clinically significant changes in Hemoglobin	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Hemoglobin (g/dL).
Dose Escalation part: clinically significant changes in Hematocrit	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Hematocrit (%).
Dose Escalation part: clinically significant changes in Absolute Basophil Count	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Absolute Basophil Count (G/L).
Dose Escalation part: clinically significant changes in Absolute Neutrophil Count	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Absolute Neutrophil Count (G/L).
Dose Escalation part: clinically significant changes in Chloride	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Chloride (mmol/L).
Dose Escalation part: clinically significant changes in Potassium	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Potassium (mmol/L).
Dose Escalation part: clinically significant changes in Creatinine Clearance	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Creatinine Clearance (mL/min).
Dose Escalation part: clinically significant changes in Gamma-glutamyl transférase (GGT)	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Gamma-glutamyl transférase (GGT) (U/L).
Dose Escalation part: clinically significant changes in Lactate dehydrogenase (LDH)	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Lactate dehydrogenase (LDH) (U/L).
Dose Escalation part: clinically significant changes in Absolute Eosinophil Count	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Absolute Eosinophil Count (G/L).
Dose Escalation part: clinically significant changes in Absolute Lymphocytes Count	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Absolute Lymphocytes Count (G/L).
Dose Escalation part: clinically significant changes in Creatinine	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Creatinine (µmol/L).
Dose Escalation part: clinically significant changes in Glucose	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Glucose (mmol/L).
Dose Escalation part: clinically significant changes in Total Protein	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Total Protein (g/L).
Dose Escalation part: clinically significant changes in Alanine aminotransferase (ALT)	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Alanine aminotransferase (ALT) (U/L).
Dose Escalation part: clinically significant changes in Amylase	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Amylase (U/L).
Dose Escalation part: clinically significant changes in Prothrombin Time (PT)	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Prothrombin Time (PT) (Sec).
Dose Escalation part: clinically significant changes in INR (if under VKA Therapy)	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in INR (if under VKA Therapy)
Dose Escalation part: clinically significant changes in Activated Partial Thromboplastin Time (aPTT)	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Activated Partial Thromboplastin Time (aPTT) (Sec).
Dose Escalation part: clinically significant findings in blood pressure (BP)	At the end of Cycle 1 (28 days)	Incidence and severity of clinically significant findings in blood pressure: Significant blood pressure increase will be defined as BP \>150/100 mmHg in a subject without a history of hypertension or increased \>20 mmHg (diastolic) from baseline measurement in a subject with a previous history of hypertension.
Dose Escalation part: clinically significant findings in electrocardiogram (ECGs)	At the end of Cycle 1 (28 days)	Incidence of clinically significant findings in Electrocardiogram (ECG): Significant QTc prolongation will be defined as an interval ≥500 msec or an interval which increases by ≥60 msec over baseline
Expansion part: Anti-tumors efficacy	Within 3 months after XON7 initiation	Objective response rate (ORR): defined as the proportion of participants with a confirmed complete response \[CR\] or confirmed partial response \[PR\] assessed by investigators according to RECIST v1.1.
Dose Escalation part: clinically significant changes in Absolute Monocytes Count	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Absolute Monocytes Count (G/L).
Dose Escalation part: clinically significant changes in Platelet Count	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Platelet Count (G/L).
Dose Escalation part: clinically significant changes in Albumin	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Albumin (g/L).
Dose Escalation part: clinically significant changes in Bicarbonate	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Bicarbonate (mmol/L).
Dose Escalation part: clinically significant changes in Total Bilirubin	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Total Bilirubin (µmol/L).
Dose Escalation part: clinically significant changes in Calcium	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Calcium (mmol/L).
Dose Escalation part: clinically significant changes in Urea	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Urea (mmol/L).
Dose Escalation part: clinically significant changes in Magnesium	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Magnesium (mmol/L).
Dose Escalation part: clinically significant changes in Phosphate	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Phosphate (mmol/L).
Dose Escalation part: clinically significant changes in Sodium	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Sodium (mmol/L).
Dose Escalation part: clinically significant changes in Aspartate aminotransferase (AST)	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Aspartate aminotransferase (AST) (U/L).
Dose Escalation part: clinically significant changes in Alkaline Phosphatase (ALP)	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Alkaline Phosphatase (ALP) (U/L).
Dose Escalation part: clinically significant changes in Creatine kinase - cardiac muscle isoenzyme (CK-MB)	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Creatine kinase - cardiac muscle isoenzyme (CK-MB) (U/L).
Dose Escalation part: clinically significant changes in Troponin T	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Troponin T (ng/L).
Dose Escalation part: clinically significant changes in Lipase	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Lipase (U/L).
Dose Escalation part: clinically significant changes in Total Protein Creatine Kinase (CK)	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Total Protein Creatine Kinase (CK) (U/L).

Secondary Outcome Measures

Name	Time	Method
Pharmacokinetics (PK) of XON7 (Part 1): Cmax	Cycle 1-Day 1 Predose and Postdose: 5 minutes; 1; 2; 4; 8; 24; 72 or 96; 144 hours after the end of infusion. Cycle 1 Day 15; Cycle 2 Day 1; Cycle 3 Day 1; Cycle 7 Day 1: Predose and 5 minutes after the end of infusion	XON7 peak plasma concentration (Cmax) in plasma
Pharmacokinetics (PK) of XON7 (Part 2): Cmax	Cycle 1-Day 1; Cycle 2-Day 1; Cycle 3-Day 1; Cycle 6-Day 1; Cycle 9-Day1 and Cycle 12-Day 1: Predose and 5 minutes after the end of infusion	XON7 peak plasma concentration (Cmax) in plasma
Pharmacokinetics (PK) of XON7 (Part 1): Tmax	Cycle 1-Day 1 Predose and Postdose: 5 minutes; 1; 2; 4; 8; 24; 72 or 96; 144 hours after the end of infusion. Cycle 1 Day 15; Cycle 2 Day 1; Cycle 3 Day 1; Cycle 7 Day 1: Predose and 5 minutes after the end of infusion	Time to peak drug concentration in plasma (Tmax)
Pharmacokinetics (PK) of XON7 (Part 2): Tmax	Cycle 1-Day 1; Cycle 2-Day 1; Cycle 3-Day 1; Cycle 6-Day 1; Cycle 9-Day1 and Cycle 12-Day 1: Predose and 5 minutes after the end of infusion	Time to peak drug concentration in plasma (Tmax)
Pharmacokinetics (PK) of XON7 (Part 1): AUC	Cycle 1-Day 1 Predose and Postdose: 5 minutes; 1; 2; 4; 8; 24; 72 or 96; 144 hours after the end of infusion. Cycle 1 Day 15; Cycle 2 Day 1; Cycle 3 Day 1; Cycle 7 Day 1: Predose and 5 minutes after the end of infusion	Area under the plasma concentration versus time curve (AUC). AUC24hours; AUC0-14days and AUC15-28days will be assessed
Pharmacokinetics (PK) of XON7 (Part 2): AUC	Cycle 1-Day 1; Cycle 2-Day 1; Cycle 3-Day 1; Cycle 6-Day 1; Cycle 9-Day1 and Cycle 12-Day 1: Predose and 5 minutes after the end of infusion	Area under the plasma concentration versus time curve (AUC). AUC24hours; AUC0-14days and AUC15-28days will be assessed
Pharmacokinetics (PK) of XON7 (Part 1): Ctrough	Cycle 1-Day 1 Predose and Postdose: 5 minutes; 1; 2; 4; 8; 24; 72 or 96; 144 hours after the end of infusion. Cycle 1 Day 15; Cycle 2 Day 1; Cycle 3 Day 1; Cycle 7 Day 1: Predose and 5 minutes after the end of infusion	Trough concentration (Ctrough) is the concentration reached by XON7 immediately before the next dose is administered
Pharmacokinetics (PK) of XON7 (Part 2): Ctrough	Cycle 1-Day 1; Cycle 2-Day 1; Cycle 3-Day 1; Cycle 6-Day 1; Cycle 9-Day1 and Cycle 12-Day 1: Predose and 5 minutes after the end of infusion	Trough concentration (Ctrough) is the concentration reached by XON7 immediately before the next dose is administered
Pharmacokinetics (PK) of XON7 (Part 1): Cmin	Cycle 1-Day 1 Predose and Postdose: 5 minutes; 1; 2; 4; 8; 24; 72 or 96; 144 hours after the end of infusion. Cycle 1 Day 15; Cycle 2 Day 1; Cycle 3 Day 1; Cycle 7 Day 1: Predose and 5 minutes after the end of infusion	Cmin for the minimum blood plasma concentration reached by XON7 during the time interval between administration of two doses
Pharmacokinetics (PK) of XON7 (Part 2): Cmin	Cycle 1-Day 1; Cycle 2-Day 1; Cycle 3-Day 1; Cycle 6-Day 1; Cycle 9-Day1 and Cycle 12-Day 1: Predose and 5 minutes after the end of infusion	Cmin for the minimum blood plasma concentration reached by XON7 during the time interval between administration of two doses
Pharmacokinetics (PK) of XON7 (Part 1): T1/2	Cycle 1-Day 1 Predose and Postdose: 5 minutes; 1; 2; 4; 8; 24; 72 or 96; 144 hours after the end of infusion. Cycle 1 Day 15; Cycle 2 Day 1; Cycle 3 Day 1; Cycle 7 Day 1: Predose and 5 minutes after the end of infusion	Half-life (T1/2) refers to the time required for plasma concentration of XON7 to decrease by 50%
Pharmacokinetics (PK) of XON7 (Part 2): T1/2	Cycle 1-Day 1; Cycle 2-Day 1; Cycle 3-Day 1; Cycle 6-Day 1; Cycle 9-Day1 and Cycle 12-Day 1: Predose and 5 minutes after the end of infusion	Half-life (T1/2) refers to the time required for plasma concentration of XON7 to decrease by 50%
Pharmacokinetics (PK) of XON7 (Part 1): CL	Cycle 1-Day 1 Predose and Postdose: 5 minutes; 1; 2; 4; 8; 24; 72 or 96; 144 hours after the end of infusion. Cycle 1 Day 15; Cycle 2 Day 1; Cycle 3 Day 1; Cycle 7 Day 1: Predose and 5 minutes after the end of infusion	Clearance (CL) is the volume of blood or plasma cleared of XON7 from the body per unit of time
Pharmacokinetics (PK) of XON7 (Part 2): CL	Cycle 1-Day 1; Cycle 2-Day 1; Cycle 3-Day 1; Cycle 6-Day 1; Cycle 9-Day1 and Cycle 12-Day 1: Predose and 5 minutes after the end of infusion	Clearance (CL) is the volume of blood or plasma cleared of XON7 from the body per unit of time
Pharmacokinetics (PK) of XON7 (Part 1): Vd	Cycle 1-Day 1 Predose and Postdose: 5 minutes; 1; 2; 4; 8; 24; 72 or 96; 144 hours after the end of infusion. Cycle 1 Day 15; Cycle 2 Day 1; Cycle 3 Day 1; Cycle 7 Day 1: Predose and 5 minutes after the end of infusion	Volume of distribution (Vd) is defined as the total amount of XON7 in the body divided by its concentration in plasma
Pharmacokinetics (PK) of XON7 (Part 2): Vd	Cycle 1-Day 1; Cycle 2-Day 1; Cycle 3-Day 1; Cycle 6-Day 1; Cycle 9-Day1 and Cycle 12-Day 1: Predose and 5 minutes after the end of infusion	Volume of distribution (Vd) is defined as the total amount of XON7 in the body divided by its concentration in plasma
Host immunogenicity to XON7 (Part 1 and part 2)	Cycle 1-Day 1; Cycle 1-Day4; Cycle 1-Day7; Cycle 1-Day15; Cycle 2 and additional cycles-Day1; 30 and 60 days after the last dose of XON7	Percentage of participants who develop detectable anti-drug antibodies
Further assess anti-tumor efficacy (Part 1): ORR	Tumor imaging (computed tomography [CT]) will be performed within 28 days prior to enrollment, and while on study approximately every 8 weeks during the treatment period. During the survival follow-up, results of CT only performed in current practice	Objective response rate (ORR): defined as the proportion of participants with a confirmed complete response \[CR\] or confirmed partial response \[PR\] assessed by investigators according to RECIST v1.1. within 3 months after XON7 initiation
Further assess anti-tumor efficacy (Part 2): CBR	Tumor imaging (computed tomography [CT]) will be performed within 28 days prior to enrollment, and while on study approximately every 8 weeks during the treatment period. During the survival follow-up, results of CT only performed in current practice	Clinical Benefit Rate (CBR) defined as the proportion of participants who achieve CR, PR, and durable SD \[SD≥24 weeks\] assessed by investigators according to the RECIST criteria v 1.1.
Expansion part: clinically significant changes in Absolute Neutrophil Count	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Absolute Neutrophil Count (G/L).
Further assess anti-tumor efficacy (Part 1 and part 2): DCR	Tumor imaging (computed tomography [CT]) will be performed within 28 days prior to enrollment, and while on study approximately every 8 weeks during the treatment period. During the survival follow-up, results of CT only performed in current practice	Disease control rate (DCR): defined as the proportion of participants who achieve confirmed complete response \[CR\], confirmed partial response \[PR\] or stable disease \[SD\] assessed by investigators according to the RECIST criteria version 1.1.
Further assess anti-tumor efficacy (Part 1 and part 2): DoR	Tumor imaging (computed tomography [CT]) will be performed within 28 days prior to enrollment, and while on study approximately every 8 weeks during the treatment period. During the survival follow-up, results of CT only performed in current practice	Duration of response (DoR): defined as the time interval between the first confirmed objective response (CR or PR per RECIST 1.1 by investigators) and the first occurrence of objective tumor progression (Progressive disease (PD) per RECIST 1.1 by investigators) or death from any cause.
Further assess anti-tumor efficacy (Part 2): TTR	Tumor imaging (computed tomography [CT]) will be performed within 28 days prior to enrollment, and while on study approximately every 8 weeks during the treatment period. During the survival follow-up, results of CT only performed in current practice	Time to response (TTR): defined as the time from the date of XON7 initiation to first confirmed objective response (CR or PR per RECIST 1.1 by investigators)..
Further assess anti-tumor efficacy (Part 1 and part 2): PFS	Tumor imaging (computed tomography [CT]) will be performed within 28 days prior to enrollment, and while on study approximately every 8 weeks during the treatment period. During the survival follow-up, results of CT only performed in current practice	Progression-free survival (PFS): defined as the time from the date of XON7 initiation to the date of first documented progression (RECIST 1.1 by investigators) or death.
Further assess anti-tumor efficacy (Part 1 and part 2): OS	Tumor imaging (computed tomography [CT]) will be performed within 28 days prior to enrollment, and while on study approximately every 8 weeks during the treatment period. During the survival follow-up, results of CT only performed in current practice	Overall survival (OS): defined as the time interval between the date of XON7 initiation and the date of death due to any cause.
Expansion part: treatment emergent adverse events (TEAEs)	Participants will be assessed for AEs and SAEs beginning immediately after the first dose of investigational drug and continuing through to follow-up which is 60 ± 5 days of last dose of investigational drug.	An overall summary of AE occurrences with onset during the first treatment cycle will be presented; this will include the following AE attributes: * Preferred term,; * Maximum CTCAE grade,; * Outcome,; * Time to first occurrence \[days\].
Dose Escalation part: clinically significant findings in blood pressure (BP)	Before and immediately after the first dose of investigational drug and continuing through to follow-up which is 60 ± 5 days of last dose of investigational drug	Incidence and severity of clinically significant findings in blood pressure: Significant blood pressure increase will be defined as BP \>150/100 mmHg in a subject without a history of hypertension or increased \>20 mmHg (diastolic) from baseline measurement in a subject with a previous history of hypertension.
Dose Escalation part: clinically significant findings in electrocardiogram (ECGs)	Before and immediately after the first dose of investigational drug and continuing through to follow-up which is 60 ± 5 days of last dose of investigational drug	Incidence of clinically significant findings in Electrocardiogram (ECG): Significant QTc prolongation will be defined as an interval ≥500 msec or an interval which increases by ≥60 msec over baseline
Expansion part: clinically significant changes in Leucocytes count	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Leucocytes Count (G/L)
Expansion part: clinically significant changes in Red Blood Cells Count	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Red Blood Cells Count (T/L)
Expansion part: clinically significant changes in Hemoglobin	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Hemoglobin (g/dL).
Expansion part: clinically significant changes in Hematocrit	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Hematocrit (%).
Expansion part: clinically significant changes in Sodium	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Sodium (mmol/L).
Expansion part: clinically significant changes in Absolute Eosinophil Count	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Absolute Eosinophil Count (G/L).
Expansion part: clinically significant changes in Absolute Basophil Count	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Absolute Basophil Count (G/L).
Expansion part: clinically significant changes in Absolute Lymphocytes Count	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Absolute Lymphocytes Count (G/L).
Expansion part: clinically significant changes in Absolute Monocytes Count	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Absolute Monocytes Count (G/L).
Expansion part: clinically significant changes in Platelet Count	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Platelet Count (G/L).
Expansion part: clinically significant changes in Albumin	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Albumin (g/L).
Expansion part: clinically significant changes in Bicarbonate	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Bicarbonate (mmol/L).
Expansion part: clinically significant changes in Total Bilirubin	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Total Bilirubin (µmol/L).
Expansion part: clinically significant changes in Calcium	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Calcium (mmol/L).
Expansion part: clinically significant changes in Urea	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Urea (mmol/L).
Expansion part: clinically significant changes in Chloride	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Chloride (mmol/L).
Expansion part: clinically significant changes in Creatinine	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Creatinine (µmol/L).
Expansion part: clinically significant changes in Creatinine Clearance	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Creatinine Clearance (mL/min).
Expansion part: clinically significant changes in Glucose	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Glucose (mmol/L).
Expansion part: clinically significant changes in Magnesium	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Magnesium (mmol/L).
Expansion part: clinically significant changes in Phosphate	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Phosphate (mmol/L).
Expansion part: clinically significant changes in Potassium	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Potassium (mmol/L).
Expansion part: clinically significant changes in Total Protein	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Total Protein (g/L).
Expansion part: clinically significant changes in Alanine aminotransferase (ALT)	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Alanine aminotransferase (ALT) (U/L).
Expansion part: clinically significant changes in Aspartate aminotransferase (AST)	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Aspartate aminotransferase (AST) (U/L).
Expansion part: clinically significant changes in Gamma-glutamyl transférase (GGT)	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Gamma-glutamyl transférase (GGT) (U/L).
Expansion part: clinically significant changes in Alkaline Phosphatase (ALP)	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Alkaline Phosphatase (ALP) (U/L).
Expansion part: clinically significant changes in Lactate dehydrogenase (LDH)	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Lactate dehydrogenase (LDH) (U/L).
Expansion part: clinically significant changes in Amylase	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Amylase (U/L).
Expansion part: clinically significant changes in Lipase	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Lipase (U/L).
Expansion part: clinically significant changes in Total Protein Creatine Kinase (CK)	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Total Protein Creatine Kinase (CK) (U/L).
Expansion part: clinically significant changes in Creatine kinase - cardiac muscle isoenzyme (CK-MB)	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Creatine kinase - cardiac muscle isoenzyme (CK-MB) (U/L).
Expansion part: clinically significant changes in Troponin T	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Troponin T (ng/L).
Expansion part: clinically significant changes in Prothrombin Time (PT)	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Prothrombin Time (PT) (Sec).
Expansion part: clinically significant changes in INR (if under VKA Therapy)	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in INR (if under VKA Therapy)
Expansion part: clinically significant changes in Activated Partial Thromboplastin Time (aPTT)	At the end of Cycle 1 (28 days)	Incidence and magnitude of clinically significant changes in Activated Partial Thromboplastin Time (aPTT) (Sec).

Trial Locations

Locations (4)

Institut Jules Bordet; 🇧🇪 Anderlecht, Belgium

Hôpital Foch; 🇫🇷 Suresnes, France

Centre Léon Bérard; 🇫🇷 Lyon, France

IUCT-Oncopole; 🇫🇷 Toulouse, France