Cited by 1,477Cancer Immunotherapy and BiomarkersBreast Cancer Treatment StudiesAdvanced Breast Cancer Therapies

Pembrolizumab in Patients With Advanced Triple-Negative Breast Cancer: Phase Ib KEYNOTE-012 Study

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Nanda, Rita, Chow, Laura Q.M., Dees, E. Claire, Berger, Raanan, Gupta, Shilpa, Geva, Ravit, Pusztai, Lajos, Pathiraja, Kumudu +4 more·2016·Journal of Clinical Oncology

Abstract

Purpose: Immune checkpoint inhibition has been demonstrated to be an effective anticancer strategy. Several lines of evidence support the study of immunotherapy in triple-negative breast cancer (TNBC). We assessed the safety and antitumor activity of the programmed cell death protein 1 (PD-1) inhibitor pembrolizumab in patients with advanced TNBC. Methods: KEYNOTE-012 ( ClinicalTrials.gov identifier: NCT01848834) was a multicenter, nonrandomized phase Ib trial of single-agent pembrolizumab given intravenously at 10 mg/kg every 2 weeks to patients with advanced PD-L1–positive (expression in stroma or ≥ 1% of tumor cells by immunohistochemistry) TNBC, gastric cancer, urothelial cancer, and head and neck cancer. This report focuses on the TNBC cohort. Results: Among 111 patients with TNBC whose tumor samples were screened for PD-L1 expression, 58.6% had PD-L1–positive tumors. Thirty-two women (median age, 50.5 years; range, 29 to 72 years) were enrolled and assessed for safety and antitumor activity. The median number of doses administered was five (range, 1 to 36 doses). Common toxicities were mild and similar to those observed in other tumor cohorts (eg, arthralgia, fatigue, myalgia, and nausea), and included five (15.6%) patients with grade ≥ 3 toxicity and one treatment-related death. Among the 27 patients who were evaluable for antitumor activity, the overall response rate was 18.5%, the median time to response was 17.9 weeks (range, 7.3 to 32.4 weeks), and the median duration of response was not yet reached (range, 15.0 to ≥ 47.3 weeks). Conclusion: This phase Ib study describes preliminary evidence of clinical activity and a potentially acceptable safety profile of pembrolizumab given every 2 weeks to patients with heavily pretreated, advanced TNBC. A single-agent phase II study examining a 200-mg dose given once every 3 weeks ( ClinicalTrials.gov identifier: NCT02447003) is ongoing.

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Authors
Nanda, R., Chow, L. Q. M., Dees, E. C., Berger, R., Gupta, S., Geva, R., Pusztai, L., Pathiraja, K., Aktan, G., Cheng, J. D., Karantza, V., & Buisseret, L.
Affiliations
  • Merck & Co., Inc., Rahway, NJ, USA (United States) (US)
  • University of Washington (US)
Venue
Journal of Clinical Oncology
Published
2016-07-20
Volume
34
Issue
21
Pages
2460-2467
ISSN
  • 0732-183X (ISSN-L)
  • 1527-7755
OpenAlex
W2345415641
Cited by
1,477
References
42
Citations by year
2026: 57 · 2025: 97 · 2024: 110 · 2023: 147 · 2022: 147 · 2021: 191 · 2020: 186 · 2019: 165 · 2018: 162 · 2017: 170 · 2016: 43 · 2015: 1
FWCI
96.94
Type
journal article
Language
en
Open access
Locations
  • Journal of Clinical Oncology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Dépôt institutionnel de l'Université libre de Bruxelles (Université Libre de Bruxelles) (submittedVersion)
Funders
National Cancer Institute (P30CA016086)
Topics
  • Health Sciences › Medicine › Oncology › Cancer Immunotherapy and Biomarkers
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Breast Cancer Treatment Studies
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Advanced Breast Cancer Therapies
Keywords
pembrolizumab, triple-negative breast cancer, PD-1 inhibitors, immune checkpoint blockade, PD-L1 expression, anticancer activity, drug safety, immunotherapy, advanced cancer, heavily pretreated patients
MeSH terms
Adult, Aged, Antineoplastic Agents, Female, Humans, L-Lactate Dehydrogenase, Middle Aged, Antibodies, Monoclonal, Humanized, Triple Negative Breast Neoplasms

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