A Study to Evaluate the Safety, Pharmacokinetics, and Activity of GDC-6036 Alone or in Combination in Participants With Advanced or Metastatic Solid Tumors With a KRAS G12C Mutation
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ClinicalTrials.gov Identifier: NCT04449874 |
Recruitment Status :
Recruiting
First Posted : June 29, 2020
Last Update Posted : May 11, 2023
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Condition or disease | Intervention/treatment | Phase |
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Non-Small Cell Lung Cancer Colorectal Cancer Advanced Solid Tumors | Drug: GDC-6036 Drug: Atezolizumab Drug: Cetuximab Drug: Bevacizumab Drug: Erlotinib Drug: GDC-1971 Drug: Inavolisib | Phase 1 |
Study Type : | Interventional (Clinical Trial) |
Estimated Enrollment : | 498 participants |
Allocation: | Non-Randomized |
Intervention Model: | Sequential Assignment |
Masking: | None (Open Label) |
Primary Purpose: | Treatment |
Official Title: | A Phase Ia/Ib Dose-Escalation and Dose-Expansion Study Evaluating the Safety, Pharmacokinetics, and Activity of GDC-6036 as a Single Agent and in Combination With Other Anti-cancer Therapies in Patients With Advanced or Metastatic Solid Tumors With a KRAS G12C Mutation |
Actual Study Start Date : | July 29, 2020 |
Estimated Primary Completion Date : | November 30, 2024 |
Estimated Study Completion Date : | November 30, 2024 |

Arm | Intervention/treatment |
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Experimental: Arm A: Dose-escalation (Stage I), Dose Expansion (Stage II)
Participants in Stage I will receive GDC-6036 administered orally once daily (PO QD). The dose will be increased in successive cohorts until a study-specific threshold is reached. Participants with select solid tumors will be treated with GDC-6036 PO QD in Stage II. |
Drug: GDC-6036
The starting dose of GDC-6036 in the combination Arms B, C, D, E, F and G will be determined from Stage I Arm A (single-agent dose escalation). |
Experimental: Arm B: GDC-6036 + Atezolizumab (Stage I and Stage II)
Participants with non-small cell lung cancer will receive GDC-6036 in combination with atezolizumab.
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Drug: GDC-6036
The starting dose of GDC-6036 in the combination Arms B, C, D, E, F and G will be determined from Stage I Arm A (single-agent dose escalation). Drug: Atezolizumab A 1200 milligram (mg) intravenous (IV) infusion of atezolizumab will be administered on Day 1 of 21 day cycles. |
Experimental: Arm C: GDC-6036 + Cetuximab (Stage I and Stage II)
Participants with colorectal cancer will receive GDC-6036 in combination with cetuximab.
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Drug: GDC-6036
The starting dose of GDC-6036 in the combination Arms B, C, D, E, F and G will be determined from Stage I Arm A (single-agent dose escalation). Drug: Cetuximab Cetuximab will be administered at an initial dose of 400 milligram per square meter (mg/m^2) IV infusion followed by 250 mg/m^2 IV infusion weekly in 21 day cycles. |
Experimental: Arm D: GDC-6036 + Bevacizumab (Stage I and Stage II)
Participants with solid tumors will receive GDC-6036 in combination with bevacizumab.
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Drug: GDC-6036
The starting dose of GDC-6036 in the combination Arms B, C, D, E, F and G will be determined from Stage I Arm A (single-agent dose escalation). Drug: Bevacizumab A 15 milligram per kilogram (mg/kg) IV infusion of bevacizumab will be administered on Day 1 of 21 day cycles. |
Experimental: Arm E: GDC-6036 + Erlotinib (Stage I and Stage II)
Participants with non-small cell lung cancer will receive GDC-6036 in combination with erlotinib.
|
Drug: GDC-6036
The starting dose of GDC-6036 in the combination Arms B, C, D, E, F and G will be determined from Stage I Arm A (single-agent dose escalation). Drug: Erlotinib 150 mg of erlotinib will be administered PO QD in 21 day cycles. |
Experimental: Arm F: GDC-6036 + GDC-1971 (Stage I and Stage II)
Participants with solid tumors will receive GDC-6036 in combination with GDC-1971 PO in Stage I. Participants with select solid tumors will be treated with GDC-6036 in combination with GDC-1971 PO in Stage II. |
Drug: GDC-6036
The starting dose of GDC-6036 in the combination Arms B, C, D, E, F and G will be determined from Stage I Arm A (single-agent dose escalation). Drug: GDC-1971 The starting dose of GDC-1971 will be determined from its single-agent dose escalation. |
Experimental: Arm G: GDC-6036 + Inavolisib (Stage I and Stage II)
Participants with solid tumors will receive GDC-6036 in combination with inavolisib PO in Stage I. Participants with select solid tumors will be treated with GDC-6036 in combination with inavolisib PO in Stage II. |
Drug: GDC-6036
The starting dose of GDC-6036 in the combination Arms B, C, D, E, F and G will be determined from Stage I Arm A (single-agent dose escalation). Drug: Inavolisib The starting dose of inavolisib will be determined from its single-agent dose escalation. |
- Percentage of Participants With Adverse Events (AEs) [ Time Frame: From Cycle 1 Day 1 until 28 days after the final dose (or as specified in the protocol). A cycle is 21 days. ]Severity is determined according to National Cancer Institute Common Terminology Criteria for Adverse Events, Version 5.0 (NCI CTCAE v5.0)
- Percentage of Participants With Dose-Limiting Toxicities (DLTs) [ Time Frame: From Cycle 1 Day 1 through Day 21. A cycle is 21 days. ]
- Plasma Concentrations of GDC-6036 [ Time Frame: Various timepoints from Cycle 1 Day 1 through study treatment discontinuation (within 28 days after the final dose of study drug). A cycle is 21 days. ]
- Plasma Concentrations of Erlotinib [ Time Frame: Various timepoints from Cycle 1 Day 1 through study treatment discontinuation (within 28 days after the final dose of study drug). A cycle is 21 days. ]
- Plasma Concentrations of GDC-1971 [ Time Frame: Various timepoints from Cycle 1 Day 1 through study treatment discontinuation (within 28 days after the final dose of study drug). A cycle is 21 days. ]
- Plasma Concentrations of Inavolisib [ Time Frame: Various timepoints from Cycle 1 Day 1 through study treatment discontinuation (within 28 days after the final dose of study drug). A cycle is 21 days. ]
- Objective Response Rate (ORR) as Determined by the Investigator According to Response Evaluation Criteria in Solid Tumors, Version 1.1 (RECIST v1.1) [ Time Frame: Every 6 weeks from Cycle 1 Day 1 until study treatment discontinuation (within 28 days after the final dose of study drug). A cycle is 21 days. ]
- Duration of Response (DOR) as Determined by the Investigator According to RECIST v1.1 [ Time Frame: Every 6 weeks from Cycle 1 Day 1 until study treatment discontinuation (within 28 days after the final dose of study drug). A cycle is 21 days. ]
- Progression-free survival (PFS) as determined by the investigator according to RECIST v1.1 [ Time Frame: Every 6 weeks from Cycle 1 Day 1 until study treatment discontinuation (within 28 days after the final dose of study drug). A cycle is 21 days. ]
- Relationship Between GDC-6036 Exposure (Maximum Plasma Concentration Observed [Cmax]) [ Time Frame: Various timepoints from Cycle 1 Day 1 through study treatment discontinuation (within 28 days after the final dose of study drug). A cycle is 21 days. ]
- Relationship Between GDC-6036 Exposure (Time to Maximum Plasma Concentration [Tmax]) [ Time Frame: Various timepoints from Cycle 1 Day 1 through study treatment discontinuation (within 28 days after the final dose of study drug). A cycle is 21 days. ]
- Relationship Between GDC-6036 Exposure (Half-life [t1/2]) [ Time Frame: Various timepoints from Cycle 1 Day 1 through study treatment discontinuation (within 28 days after the final dose of study drug). A cycle is 21 days. ]
- Relationship Between GDC-6036 Exposure (Area Under the Curve [AUC]) [ Time Frame: Various timepoints from Cycle 1 Day 1 through study treatment discontinuation (within 28 days after the final dose of study drug). A cycle is 21 days. ]
- Relationship Between Tumor Pharmacodynamic Effects of GDC-6036 [ Time Frame: Various timepoints from Cycle 1 Day 1 through study treatment discontinuation (within 28 days after the final dose of study drug). A cycle is 21 days. ]

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Ages Eligible for Study: | 18 Years and older (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Histologically documented advanced or metastatic solid tumor with KRAS G12C mutation.
- Women of childbearing potential must agree to remain abstinent or use contraception, and agree to refrain from donating eggs during the treatment period and after the final dose of study treatment as specified in the protocol.
- Men who are not surgically sterile must agree to remain abstinent or use a condom, and agreement to refrain from donating sperm during the treatment period and after the final dose of study treatment as specified in the protocol.
Exclusion Criteria:
- Active brain metastases.
- Malabsorption or other condition that interferes with enteral absorption.
- Clinically significant cardiovascular dysfunction or liver disease.

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT04449874
Contact: Reference Study ID Number: GO42144 whttps://forpatients.roche.com/ | 888-662-6728 (U.S. and Canada) | global-roche-genentech-trials@gene.com |

Study Director: | Clinical Trials | Genentech, Inc. |
Responsible Party: | Genentech, Inc. |
ClinicalTrials.gov Identifier: | NCT04449874 |
Other Study ID Numbers: |
GO42144 2020-000084-22 ( EudraCT Number ) |
First Posted: | June 29, 2020 Key Record Dates |
Last Update Posted: | May 11, 2023 |
Last Verified: | May 2023 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | No |
Plan Description: | Qualified researchers may request access to individual patient level data through the clinical study data request platform (www.vivli.org). Further details on Roche's criteria for eligible studies are available here (https://vivli.org/members/ourmembers/). For further details on Roche's Global Policy on the Sharing of Clinical Information and how to request access to related clinical study documents, see here (https://www.roche.com/research_and_development/who_we_are_how_we_work/clinical_trials/our_commitment_to_data_sharing.htm). |
Studies a U.S. FDA-regulated Drug Product: | Yes |
Studies a U.S. FDA-regulated Device Product: | No |
KRAS G12C Non-Small Cell Lung Cancer Colorectal Cancer GDC-6036 Metastatic Solid Tumor Atezolizumab |
Bevacizumab Cetuximab Erlotinib Inavolisib GDC-1971 SHP2 |
Carcinoma, Non-Small-Cell Lung Colorectal Neoplasms Neoplasms Lung Neoplasms Respiratory Tract Neoplasms Thoracic Neoplasms Neoplasms by Site Lung Diseases Respiratory Tract Diseases Carcinoma, Bronchogenic Bronchial Neoplasms Intestinal Neoplasms Gastrointestinal Neoplasms Digestive System Neoplasms Digestive System Diseases |
Gastrointestinal Diseases Colonic Diseases Intestinal Diseases Rectal Diseases Bevacizumab Cetuximab Atezolizumab Erlotinib Hydrochloride Inavolisib Antineoplastic Agents, Immunological Antineoplastic Agents Angiogenesis Inhibitors Angiogenesis Modulating Agents Growth Substances Physiological Effects of Drugs |