Vemurafenib, Cobimetinib, Atezolizumab, and Tiragolumab in Treating Patients With High-Risk Stage III Melanoma

NCT03554083 | Completed Phase 2 Results DMC FDA Drug

• 3 other identifiers: MC1776NCI-2018-0101817-009383
• Study Type: interventional
• Target: 64
• Locations: 1 country
• Sites: 3

Brief Summary

This trial studies how well vemurafenib, cobimetinib, and atezolizumab work in treating patients with high-risk stage III melanoma. Vemurafenib and cobimetinib may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. Immunotherapy with monoclonal antibodies, such as atezolizumab and tiragolumab, may help the body's immune system attack the cancer, and may interfere with the ability of tumor cells to grow and spread. Giving vemurafenib, cobimetinib, and atezolizumab may work better in treating high-risk stage III melanoma. Giving atezolizumab and tiragolumab together may also work better in treating high-risk stage III melanoma.

Conditions

Clinical Stage III Cutaneous Melanoma AJCC v8; Pathologic Stage III Cutaneous Melanoma AJCC v8; Pathologic Stage IIIA Cutaneous Melanoma AJCC v8; Pathologic Stage IIIB Cutaneous Melanoma AJCC v8; Pathologic Stage IIIC Cutaneous Melanoma AJCC v8; Pathologic Stage IIID Cutaneous Melanoma AJCC v8

Outcome Measures

Primary Outcomes (2)

• Pathologic Complete Response Rate (pCR)

  Pathologic complete response rate defined as the percentage of patients with no residual disease found in the surgical specimen among the patients who began neo-adjuvant protocol treatment.

  12 weeks

• Median Recurrence-free (RFS) Rate (Adjuvant Phase)

  Recurrence-free survival is defined as the time from surgery to radiographic or histologic evidence of local, regional, or distant recurrence of melanoma or death due to any cause. For each regimen, the distribution of recurrence-free survival times \[denoted as RFS(t)\] will be estimated using the Kaplan-Meier method.

  3 years

Secondary Outcomes (1)

• Incidence of Adverse Events Per Common Terminology Criteria for Adverse Events (CTCAE)

  14 months

Other Outcomes (4)

• Pretreatment Soluble (s)PD-L1, Pretreatment Tumor PD-L1, and Pretreatment Intracellular Bim in Tumor-related T Cells

  Up to 3 years

• Molecular Features of Melanomas and the Tumor Immune Microenvironment Evaluated With Multiplexed Immunohistochemistry (mIHC) and Ribonucleic Acid Sequencing (RNASeq)

  Up to 3 years

• Changes in the Concentration of Circulating Tumor Deoxyribonucleic Acid (DNA) During Neoadjuvant Treatment

  Up to 3 years

Study Arms (3)

Arm A - CLOSED (vemurafenib, cobimetinib, atezolizumab)

EXPERIMENTAL

Patients receive vemurafenib PO BID on days 1-28 and cobimetinib PO QD on days 1-21. Patients also receive atezolizumab intravenously (IV) over 30-60 minutes on days 1 and 15 of cycles 2 and 3. Treatment repeats every 28 days for up to 3 cycles in the absence of disease progression or unacceptable toxicity. Within 2-4 weeks after treatment, patients undergo surgery then receive atezolizumab IV over 30-60 minutes on day 1. Treatment repeat every 21 days for up to 8 cycles in the absence of disease progression or unacceptable toxicity.

Drug: Atezolizumab; Drug: Cobimetinib; Drug: Vemurafenib

Arm B - CLOSED (cobimetinib, atezolizumab)

EXPERIMENTAL

Patients receive cobimetinib as in Arm A and atezolizumab IV over 30-60 minutes on days 1 and 15. Treatment repeats every 28 days for up to 3 cycles in the absence of disease progression or unacceptable toxicity. Within 2-4 weeks after treatment, patients undergo surgery then receive atezolizumab IV over 30-60 minutes on day 1. Treatment repeat every 21 days for up to 8 cycles in the absence of disease progression or unacceptable toxicity.

Drug: Atezolizumab; Drug: Cobimetinib

Arm C (atezolizumab, tiragolumab)

EXPERIMENTAL

Patients with BRAF wild-type or BRAF mutant melanoma receive atezolizumab IV over 30-60 minutes and tiragolumab IV over 30-60 minutes on day 1. Treatment repeats every 21 days for up to 4 cycles in the absence of disease progression or unacceptable toxicity.

Drug: Atezolizumab; Biological: Tiragolumab

Interventions

Atezolizumab DRUG

Given IV

Also known as: MPDL 3280A, MPDL 328OA, MPDL-3280A, MPDL3280A, MPDL328OA, RG7446, RO5541267, Tecentriq

Arm A - CLOSED (vemurafenib, cobimetinib, atezolizumab); Arm B - CLOSED (cobimetinib, atezolizumab); Arm C (atezolizumab, tiragolumab)

Cobimetinib DRUG

Given PO

Also known as: Cotellic, GDC-0973, MEK Inhibitor GDC-0973, XL518

Arm A - CLOSED (vemurafenib, cobimetinib, atezolizumab); Arm B - CLOSED (cobimetinib, atezolizumab)

Tiragolumab BIOLOGICAL

Given IV

Also known as: MTIG7192A, RG6058

Arm C (atezolizumab, tiragolumab)

Vemurafenib DRUG

Given PO

Also known as: BRAF (V600E) kinase inhibitor RO5185426, BRAF(V600E) Kinase Inhibitor RO5185426, PLX-4032, PLX4032, RG 7204, RG7204, RO 5185426, Zelboraf

Arm A - CLOSED (vemurafenib, cobimetinib, atezolizumab)

Eligibility Criteria

• Age: 18 Years+
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• PRE-REGISTRATION: Age \>= 18 years
• PRE-REGISTRATION: High-risk stage III melanoma, defined as (any of the following):
• Recurrent nodal metastasis, or
• Clinically detectable nodal metastasis, or
• Metastatic involvement of more than one nodal basin
• NOTE: For the purpose of pre-registration, high-risk stage III melanoma is defined based on clinical and imaging assessment (positron emission tomography/computed tomography \[PET/CT\], CT, or magnetic resonance imaging \[MRI\]). Histologic confirmation of nodal metastatic disease is not needed at the time of pre-registration, provided there is histologic confirmation of primary melanoma or a prior lymph node metastasis.
• PRE-REGISTRATION: Willing to submit archival tissue from a lymph node biopsy or undergo a needle biopsy (with clip placement) for BRAF testing and for research purposes.
• PRE-REGISTRATION: Willing to forego anticancer treatments or investigational agents during pre-registration period.
• PRE-REGISTRATION: The following laboratory values obtained =\< 28 days prior to pre-registration:
• Only for patients receiving therapeutic anticoagulation: stable anticoagulant regimen and stable international normalized ratio (INR).
• REGISTRATION: Histologic confirmation of stage III melanoma, as defined by the American Joint Committee on Cancer, 8th revised edition.
• REGISTRATION: Arms A and B only: Documentation of BRAFV600 mutation status in melanoma tumor tissue (archival or newly obtained) through use of a Clinical Laboratory Improvement Amendments (CLIA)-approved clinical mutation test.
• REGISTRATION: Surgically resectable disease, as determined by a melanoma surgical oncologist.
• REGISTRATION: Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1.
• REGISTRATION: Life expectancy \>= 26 weeks.

You may not qualify if:

• PRE-REGISTRATION: Prior systemic anti-cancer therapy for melanoma (e.g., chemotherapy, hormonal therapy, targeted therapy, immunotherapy including anti-PD-1, anti-PDL1 agents, or other biologic therapies), with the following exceptions: adjuvant treatment with interferon, IL-2, granulocyte-macrophage colony-stimulating factor (GM-CSF) or vaccine therapies are allowed, if discontinued \>= 28 days prior to pre-registration.
• PRE-REGISTRATION: Receiving any other investigational agent which would be considered as a treatment for the primary neoplasm.
• PRE-REGISTRATION: For patients with concurrent diagnosis of primary melanoma with nodal involvement, major surgical procedure other than lymph node biopsy or wide local excision of primary melanoma =\< 4 weeks prior to pre-registration, or anticipation of need for a major surgical procedure for reasons other than melanoma during the course of the study.
• PRE-REGISTRATION: For patients with nodal recurrence, surgical procedure or anti-cancer therapy for this recurrence (other than lymph node biopsy) or anticipation of need for a major surgical procedure for reasons other than melanoma during the course of the study.
• PRE-REGISTRATION: Prior radiotherapy for melanoma.
• PRE-REGISTRATION: History of non-nodal melanoma metastasis or central nervous system (CNS) lesion(s) proven or clinically suspected to be metastasis.
• PRE-REGISTRATION: Active malignancy (other than melanoma) or malignancy =\< 3 years prior to pre-registration.
• NOTE: Exceptions: Asymptomatic papillary thyroid cancer (not requiring treatment), resected basal cell carcinoma (BCC), resected cutaneous squamous cell carcinoma (SCC), resected carcinoma in situ of the cervix, resected carcinoma in situ of the breast, in situ prostate cancer, non-muscle-invasive bladder cancer, Stage I uterine cancer, or other curatively treated malignancies from which the patient has been disease-free for at least 3 years prior to pre registration.
• PRE-REGISTRATION: Prior allogeneic stem cell or solid organ transplantation.
• PRE-REGISTRATION: History of idiopathic pulmonary fibrosis, organizing pneumonia (e.g., bronchiolitis obliterans), drug-induced pneumonitis, or idiopathic pneumonitis, or evidence of active pneumonitis on screening chest CT scan.
• PRE-REGISTRATION: History of autoimmune disease requiring systemic immunosuppressive or immune-modulatory therapy =\< 5 years prior to pre-registration.
• NOTE: Exceptions are allowed for hypothyroidism on thyroid replacement therapy; or Type 1 diabetes on insulin regimen.
• PRE-REGISTRATION: Active psoriasis requiring therapy (systemic or topical).
• PRE-REGISTRATION: Known clinically significant liver disease, including alcoholism, cirrhosis, fatty liver, and other inherited liver disease as well as active viral disease.
• PRE-REGISTRATION: Arms A and B only: History of or evidence of retinal pathology on ophthalmologic examination including but not limited to:

Sponsors & Collaborators

• Mayo Clinic: lead

Study Sites (3)

Mayo Clinic in Florida

Jacksonville, Florida, 32224-9980, United States

Location

University of Minnesota/Masonic Cancer Center

Minneapolis, Minnesota, 55455, United States

Location

Mayo Clinic in Rochester

Rochester, Minnesota, 55905, United States

Location

Related Publications (3)

• Hieken TJ, Nelson GD, Flotte TJ, Grewal EP, Chen J, McWilliams RR, Kottschade LA, Yang L, Domingo-Musibay E, Dronca RS, Yan Y, Markovic SN, Dimou A, Montane HN, Erskine CL, Piltin MA, Price DL, Khariwala SS, Hui J, Strand CA, Harrington SM, Suman VJ, Dong H, Block MS. Neoadjuvant cobimetinib and atezolizumab with or without vemurafenib for high-risk operable Stage III melanoma: the Phase II NeoACTIVATE trial. Nat Commun. 2024 Feb 16;15(1):1430. doi: 10.1038/s41467-024-45798-8.

  PMID: 38365756 RESULT

• Block MS, Nelson GD, Chen J, Johnson S, Yang L, Flotte TJ, Grewal EP, McWilliams RR, Kottschade LA, Domingo-Musibay E, Markovic SN, Dimou A, Montane HN, Piltin MA, Price DL, Khariwala SS, Hui JYC, Erskine CL, Strand CA, Zahrieh D, Dong H, Hieken TJ. Neoadjuvant cobimetinib and atezolizumab with or without vemurafenib for stage III melanoma: outcomes and the impact of the microbiome from the NeoACTIVATE trial. J Immunother Cancer. 2025 Apr 15;13(4):e011706. doi: 10.1136/jitc-2025-011706.

  PMID: 40234093 RESULT

• Hieken TJ, Price DL, Piltin MA, Turner HJ, Block MS. Surgeon Assessment of the Technical Impact of Neoadjuvant Systemic Therapy on Operable Stage III Melanoma. Ann Surg Oncol. 2022 Feb;29(2):780-786. doi: 10.1245/s10434-021-11112-9. Epub 2021 Nov 25.

  PMID: 34825282 RESULT

Related Links

• Mayo Clinic Clinical Trials

MeSH Terms

Interventions

atezolizumab; cobimetinib; Tiragolumab; Vemurafenib

Intervention Hierarchy (Ancestors)

Sulfonamides; Amides; Organic Chemicals; Sulfones; Sulfur Compounds; Indoles; Heterocyclic Compounds, 2-Ring; Heterocyclic Compounds, Fused-Ring; Heterocyclic Compounds

Results Point of Contact

• Title: Matthew Block
• Organization: Mayo Clinic

block.matthew@mayo.edu

507-293-0553

Study Officials

• Matthew S. Block, M.D., Ph.D.

  Mayo Clinic

  PRINCIPAL INVESTIGATOR

Publication Agreements

• PI is Sponsor Employee: Yes

Study Design

• Study Type: interventional
• Phase: phase 2
• Allocation: NON RANDOMIZED
• Masking: NONE
• Purpose: TREATMENT
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: May 29, 2018
• First Posted: June 12, 2018
• Study Start: October 5, 2018
• Primary Completion: April 30, 2025
• Study Completion: April 30, 2025
• Last Updated: May 4, 2026
• Results First Posted: May 4, 2026

Record last verified: 2026-04

Locations

US (3)