Phase Ib Study of TNO155 in Combination With Spartalizumab or Ribociclib in Selected Malignancies

A Phase Ib, Open-label, Multi-center Study to Characterize the Safety, Tolerability, and Preliminary Efficacy of TNO155 in Combination With Spartalizumab or Ribociclib in Selected Malignancies

This study was a Phase Ib, multi-center, open-label study of TNO155 in combination with spartalizumab or ribociclib with a dose escalation part followed by a dose expansion part in adult subjects with advanced solid tumors.

These two treatment arms enrolled subjects in parallel to characterize the safety, tolerability, PK, PD and preliminary antitumor activity.

The study treatment was administered until the subject experienced unacceptable toxicity, progressive disease, and/or had treatment discontinued at the discretion of the Investigator or the subject, or due to withdrawal of consent.

Study Overview

• Status: Terminated
• Conditions: Colorectal Cancer; Gastrointestinal Stromal Tumors; Non-small Cell Lung Carcinoma; Head and Neck Squamous Cell Carcinoma; Esophageal SCC
• Intervention / Treatment: Drug: Spartalizumab; Drug: TNO155; Drug: Ribociclib

Detailed Description

Rationale The purpose of this study was to evaluate the safety, tolerability, and preliminary efficacy of the combination of TNO155 with spartalizumab and of TNO155 with ribociclib, and to identify dosing regimens for further study. Data from preclinical models have demonstrated anti-tumor activity for the combinations of TNO155 with spartalizumab and of TNO155 with ribociclib that is superior to the activity observed with each of the drugs as single agents. These data suggest that these combinations may provide clinical benefit to patients with advanced malignancies.

Study Design This study was a Phase Ib, multi-center, open-label study with a dose escalation part followed by a dose expansion part in adult subjects with advanced solid tumors to characterize the safety and tolerability TNO155 in combination with spartalizumab and of TNO155 in combination with ribociclib and to identify the MTD and/or recommended regimen (dose and schedule) for each combination. The study treatment was administered until the subject experienced unacceptable toxicity, progressive disease, and/or had treatment discontinued at the discretion of the Investigator or the subject, or due to withdrawal of consent.

Objectives

Primary objective:

To characterize the safety and tolerability TNO155 in combination with spartalizumab and of TNO155 in combination with ribociclib, and to identify the MTD and/or recommended regimen (dose and schedule) for each combination.

Secondary objectives:

• To characterize the pharmacokinetic (PK) profile of TNO155, spartalizumab and ribociclib when administered as a combination of TNO155 plus spartalizumab or of TNO155 plus ribociclib.
• To evaluate the preliminary anti-tumor activity of TNO155 in combination with spartalizumab and of TNO155 in combination with ribociclib.

• Study Type: Interventional
• Enrollment (Actual): 122
• Phase: Phase 1

Contacts and Locations

Study Locations

• Australia
  • New South Wales
    • Westmead, New South Wales, Australia, 2145
      • Novartis Investigative Site
• Belgium
  • Brussels, Belgium, 1200
    • Novartis Investigative Site
• China
  • Sichuan
    • Chengdu, Sichuan, China, 610041
      • Novartis Investigative Site
• Germany
  • Cologne, Germany, 50937
    • Novartis Investigative Site
• Hong Kong
  • Hong Kong, Hong Kong
    • Novartis Investigative Site
• Japan
  • Tokyo
    • Chuo Ku, Tokyo, Japan, 104 0045
      • Novartis Investigative Site
• Singapore
  • Singapore, Singapore, 119228
    • Novartis Investigative Site
• Spain
  • Catalonia
    • Barcelona, Catalonia, Spain, 08035
      • Novartis Investigative Site
  • Valencia
    • Valencia, Valencia, Spain, 46010
      • Novartis Investigative Site
• United States
  • Massachusetts
    • Boston, Massachusetts, United States, 02114
      • Massachusetts General Hospital

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years and older (Adult, Older Adult)
• Accepts Healthy Volunteers: No

Description

Key Inclusion Criteria:

1. Signed informed consent must be obtained prior to participation in the study.
2. Age ≥ 18 years. For Japan only: written consent is necessary both from the patient and his/her legal representative if he/she is under the age of 20 years.
3. ECOG (Eastern Cooperative Oncology Group) performance status ≤ 1.

4. Dose escalation part: Patients with advanced solid tumors, with evaluable disease as determined by RECIST version 1.1, and fit into one of the following groups:

   a. For TNO155 plus spartalizumab combination: i. Advanced EGFR WT, ALK WT NSCLC, after progression on or intolerance to platinum-containing combination chemotherapy and after progression on anti-PD-1 or anti-PD-L1 therapy.

   ii. Advanced HNSCC or esophageal SCC, after progression on or intolerance to platinum-containing combination chemotherapy.

   iii. Advanced CRC, after progression on or intolerance to all standard-of-care (SOC) therapy per local guidelines.

   b. For TNO155 plus ribociclib combination: Advanced solid malignancies with the exception of CRC or GIST, after progression on or intolerance to all SOC therapy per local guidelines. The exclusion of CRC applies only as of Protocol Amendment 4.

5. Dose expansion part: Patients with advanced solid tumors, with at least one measurable lesion as determined by RECIST version 1.1, who fit into one of the following groups:

   a. For TNO155 plus spartalizumab combination: i. Advanced EGFR WT, ALK WT, KRAS G12C NSCLC after progression on or intolerance to platinum-containing combination chemotherapy and after progression on anti-PD-1 or anti-PD-L1 therapy.

   ii. Advanced EGFR WT, ALK WT, KRAS WT NSCLC, after progression on or intolerance to platinum-containing combination chemotherapy and after progression on anti-PD-1 or anti-PD-L1 therapy.

   iii. Advanced HNSCC, after progression on or intolerance to, platinum-containing combination chemotherapy.

   b. For TNO155 plus ribociclib combination: i. Advanced EGFR WT, ALK WT, KRAS WT NSCLC, after progression on or intolerance to platinum-containing chemotherapy and anti-PD-1 or anti-PD-L1 therapy ii. Advanced HNSCC, after progression on or intolerance to all SOC per local guidelines

6. Patients with NSCLC whose tumors harbor genomic aberrations for which SOC targeted therapies exist and are locally approved and available must have had progression on or after, or intolerance to, the SOC targeted therapy/therapies as indicated
7. Patients must have a site of disease amenable to biopsy

Key Exclusion Criteria:

1. Prior treatment with a MAPK pathway inhibitor
2. Clinically significant cardiac disease or risk factors
3. Use of any agent known to prolong the QT interval unless it can be permanently discontinued for the duration of study (see list in Section 6.2.2).
4. History or current evidence of retinal vein occlusion (RVO) or current risk factors for RVO
5. Inflammatory bowel disease (e.g., ulcerative colitis, Crohn's disease) or impairment of gastrointestinal (GI) function or GI disease that may significantly alter the absorption of study drugs
6. Symptomatic CNS metastases which are neurologically unstable

7. Insufficient bone marrow function at screening:

   1. Absolute Neutrophil Count (ANC) < 1.5 x 109/L.
   2. Hemoglobin < 9.0 g/dL.
   3. Platelets < 75 x 109/L for TNO155 plus spartalizumab combination; < 100 x 109/L for TNO155 plus ribociclib combination.

8. Insufficient hepatic or renal function at screening:

   1. Serum total bilirubin > upper limit of normal (ULN) or, for TNO155 plus spartalizumab combination only, if liver metastases are present at baseline, serum total bilirubin > 1.5 x ULN. An exception for either combination is for patients with Gilbert's syndrome, who are excluded if total bilirubin > 3.0 x ULN or direct bilirubin > 1.5 x ULN
   2. Aspartate aminotransferase (AST) or alanine aminotransferase (ALT) > 3 x ULN for TNO155 plus spartalizumab combination or > 2.5 x ULN for TNO155 plus ribociclib combination, or > 5 x ULN for either combination if liver metastases are present.
   3. Creatinine clearance < 60 mL/min (calculated using Cockcroft-Gault equation).

9. Pregnant or breast-feeding (lactating) women.

   Additional exclusion criteria for the TNO155 plus spartalizumab combination

10. History of severe hypersensitivity reactions to other mAbs.
11. Active, known or suspected autoimmune disease.
12. History of or current interstitial lung disease or pneumonitis grade ≥ 2.
13. Human Immunodeficiency Virus (HIV) infection, unless the patient is on antiviral therapy and has undetectable viral load.
14. Active hepatitis B virus (HBV) or hepatitis C virus (HCV) infection.
15. Systemic chronic steroid therapy

16. Patients who discontinued prior anti-PD-1 therapy due to an anti-PD-1-related toxicity.

    Additional exclusion criteria for the TNO155 plus ribociclib combination

17. Systolic Blood Pressure (SBP) < 90 mmHg.
18. International Normalized Ratio (INR) > 1.5 (unless the patient is receiving anticoagulants and the INR is within the therapeutic range of intended use for that anticoagulant within seven days prior to the first dose of study drug).
19. History of HIV infection (testing not mandatory)

20. Currently receiving any of the following substances and cannot be discontinued seven days prior to Cycle 1 Day 1:

    • Concomitant medications or herbal supplements, that are strong inducers or inhibitors of CYP3A4/5,
    • Medications that have a narrow therapeutic window and are predominantly metabolized through CYP3A4/5.
21. Previous treatment with a CDK4/6 inhibitor.
22. Patient is currently receiving or has received systemic corticosteroids ≤ 2 weeks prior to starting study drug, or who have not fully recovered from side effects of such treatment.

Note: The following uses of corticosteroids are permitted: single doses, topical applications (e.g., for rash), inhaled sprays (e.g., for obstructive airways diseases), eye drops or local injections (e.g., intra-articular).

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Non-Randomized
• Interventional Model: Parallel Assignment
• Masking: None (Open Label)

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: TNO155 in combination with spartalizumab	Drug: Spartalizumab; Concentrate for solution for infusion; Other Names: PDR001; Drug: TNO155; Capsule
Experimental: TNO155 in combination with ribociclib	Drug: TNO155; Capsule; Drug: Ribociclib; Capsule and tablet; Other Names: LEE011

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
DLT incidence	Incidence of dose limiting toxicities (DLTs) during the first cycle of combination treatment during the dose escalation part	1 year
AE and SAE incidence	Incidence and severity of adverse events (AEs) and serious adverse events (SAEs) as per CTCAE v5.0, by treatment	3 years
Dose interruptions, reductions and dose intensity, by treatment	Dose tolerability	3 years

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Pharmacokinetics (PK): Cmax	Cmax for TNO155, spartalizumab, and ribociclib	3 years
Pharmacokinetics (PK): Tmax	Tmax for TNO155, spartalizumab, and ribociclib	3 years
Pharmacokinetics (PK): AUClast	AUClast for TNO155, spartalizumab, and ribociclib	3 years
Pharmacokinetics (PK): AUCtau	AUCtau for TNO155, spartalizumab, and ribociclib	3 years
Efficacy measurements per RECIST v1.1: ORR	Overall response rate (ORR) per RECIST v1.1, by treatment	3 years
Efficacy measurements per RECIST v1.1: DCR	Disease control rate (DCR) per RECIST v1.1, by treatment	3 years
Efficacy measurements per RECIST v1.1: PFS	Progression-free survival (PFS) per RECIST v1.1, by treatment	3 years
Efficacy measurements per RECIST v1.1: DOR	Duration of response (DOR) per RECIST v1.1, by treatment	3 years
Efficacy measurements per iRECIST: ORR	Overall response rate (ORR) per iRECIST for TNO155 in combination with spartalizumab	3 years
Efficacy measurements per iRECIST: DCR	Disease control rate (DCR) per iRECIST for TNO155 in combination with spartalizumab	3 years
Efficacy measurements per iRECIST: PFS	Progression-free survival (PFS) per iRECIST for TNO155 in combination with spartalizumab	3 years
Efficacy measurements per iRECIST: DOR	Duration of response (DOR) per iRECIST for TNO155 in combination with spartalizumab	3 years
Overall Survival	Overall survival (OS) by treatment	3 years

Collaborators and Investigators

• Sponsor: Novartis Pharmaceuticals

Publications and helpful links

General Publications

• Chen H, Cresswell GM, Libring S, Ayers MG, Miao J, Zhang ZY, Solorio L, Ratliff TL, Wendt MK. Tumor Cell-Autonomous SHP2 Contributes to Immune Suppression in Metastatic Breast Cancer. Cancer Res Commun. 2022 Oct 3;2(10):1104-1118. doi: 10.1158/2767-9764.CRC-22-0117. eCollection 2022 Oct.

Helpful Links

• Study Results
• A Plain Language Trial Summary is available on www.novctrd.com

Study record dates

Study Major Dates

• Study Start (Actual): July 30, 2019
• Primary Completion (Actual): January 15, 2024
• Study Completion (Actual): January 15, 2024

Study Registration Dates

• First Submitted: June 24, 2019
• First Submitted That Met QC Criteria: June 26, 2019
• First Posted (Actual): June 27, 2019

Study Record Updates

• Last Update Posted (Estimated): September 30, 2025
• Last Update Submitted That Met QC Criteria: September 24, 2025
• Last Verified: September 1, 2025

More Information

Terms related to this study

• Keywords: TNO155, spartalizumab, ribociclib, checkpoint inhibitor, SHP2, PD-1, CDK4/6, NSCLC, CRC, HNSCC, KRAS, esophageal SCC, GIST
• Additional Relevant MeSH Terms: Neoplasms by Site; Neoplasms; Intestinal Diseases; Respiratory Tract Diseases; Neoplasms by Histologic Type; Gastrointestinal Neoplasms; Digestive System Neoplasms; Digestive System Diseases; Gastrointestinal Diseases; Intestinal Neoplasms; Rectal Diseases; Lung Diseases; Head and Neck Neoplasms; Neoplasms, Glandular and Epithelial; Respiratory Tract Neoplasms; Thoracic Neoplasms; Colonic Diseases; Esophageal Diseases; Lung Neoplasms; Carcinoma; Neoplasms, Squamous Cell; Carcinoma, Bronchogenic; Bronchial Neoplasms; Neoplasms, Connective and Soft Tissue; Neoplasms, Connective Tissue; Carcinoma, Squamous Cell; Esophageal Neoplasms; Squamous Cell Carcinoma of Head and Neck; Esophageal Squamous Cell Carcinoma; Colorectal Neoplasms; Carcinoma, Non-Small-Cell Lung; Gastrointestinal Stromal Tumors; Parkinson Disease 4, Autosomal Dominant Lewy Body; Antineoplastic Agents, Immunological; Immune Checkpoint Inhibitors; Antineoplastic Agents; Molecular Mechanisms of Pharmacological Action; ribociclib; spartalizumab
• Other Study ID Numbers: CTNO155B12101

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: Yes
• Studies a U.S. FDA-regulated device product: No