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Balmaña J, Fasching PA, Couch FJ, Delaloge S, Labidi-Galy I, O'Shaughnessy J, Park YH, Eisen AF, You B, Bourgeois H, Gonçalves A, Kemp Z, Swampillai A, Jankowski T, Sohn JH, Poddubskaya E, Mukhametshina G, Aksoy S, Timcheva CV, Park-Simon TW, Antón-Torres A, John E, Baria K, Gibson I, Gelmon KA. Clinical effectiveness and safety of olaparib in BRCA-mutated, HER2-negative metastatic breast cancer in a real-world setting: final analysis of LUCY. Breast Cancer Res Treat 2024; 204:237-248. [PMID: 38112922 PMCID: PMC10948524 DOI: 10.1007/s10549-023-07165-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Accepted: 10/23/2023] [Indexed: 12/21/2023]
Abstract
PURPOSE The interim analysis of the phase IIIb LUCY trial demonstrated the clinical effectiveness of olaparib in patients with germline BRCA-mutated (gBRCAm), human epidermal growth factor receptor 2 (HER2)-negative metastatic breast cancer (mBC), with median progression-free survival (PFS) of 8.11 months, which was similar to that in the olaparib arm of the phase III OlympiAD trial (7.03 months). This prespecified analysis provides final overall survival (OS) and safety data. METHODS The open-label, single-arm LUCY trial of olaparib (300 mg, twice daily) enrolled adults with gBRCAm or somatic BRCA-mutated (sBRCAm), HER2-negative mBC. Patients had previously received a taxane or anthracycline for neoadjuvant/adjuvant or metastatic disease and up to two lines of chemotherapy for mBC. RESULTS Of 563 patients screened, 256 (gBRCAm, n = 253; sBRCAm, n = 3) were enrolled. In the gBRCAm cohort, median investigator-assessed PFS (primary endpoint) was 8.18 months and median OS was 24.94 months. Olaparib was clinically effective in all prespecified subgroups: hormone receptor status, previous chemotherapy for mBC, previous platinum-based chemotherapy (including by line of therapy), and previous cyclin-dependent kinase 4/6 inhibitor use. The most frequent treatment-emergent adverse events (TEAEs) were nausea (55.3%) and anemia (39.2%). Few patients (6.3%) discontinued olaparib owing to a TEAE. No deaths associated with AEs occurred during the study treatment or 30-day follow-up. CONCLUSION The LUCY patient population reflects a real-world population in line with the licensed indication of olaparib in mBC. These findings support the clinical effectiveness and safety of olaparib in patients with gBRCAm, HER2-negative mBC. CLINICAL TRIAL REGISTRATION Clinical trials registration number: NCT03286842.
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Affiliation(s)
- Judith Balmaña
- Medical Oncology Department, Vall d'Hebron University Hospital and Vall d'Hebron Institute of Oncology, Barcelona, Spain
| | - Peter A Fasching
- Department of Gynecology and Obstetrics, University Hospital Erlangen, Comprehensive Cancer Center Erlangen-EMN, Friedrich-Alexander University Erlangen-Nuremberg, Erlangen, Germany
| | - Fergus J Couch
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
| | - Suzette Delaloge
- Breast Cancer Unit, Department of Cancer Medicine, Gustave Roussy, Villejuif, France
| | - Intidhar Labidi-Galy
- Department of Oncology, Geneva University Hospital, Department of Medicine, Division of Oncology, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Joyce O'Shaughnessy
- Baylor University Medical Center, Texas Oncology and US Oncology, Dallas, TX, USA
| | - Yeon Hee Park
- Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Andrea F Eisen
- Division of Medical Oncology, Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
| | - Benoit You
- Department of Medical Oncology, Hospices Civils of Lyon Cancer Institute, Centre for Therapeutic Investigation in Oncology and Haematology of Lyon, Lyon Sud Hospital Centre, Lyon, France
- Faculty of Medicine of Lyon Sud, Claude Bernard Lyon 1 University, Lyon, France
- GINECO-GINEGEPS, Paris, France
| | - Hughes Bourgeois
- Medical Oncology Department, Victor Hugo Clinic-Jean Bernard Center, Le Mans, France
| | - Anthony Gonçalves
- Department of Medical Oncology, Institut Paoli-Calmettes, Marseille, France
- Cancer Research Center of Marseille, Aix-Marseille University, French National Centre for Scientific Research, National Institute for Health and Medical Research, Marseille, France
| | - Zoe Kemp
- Breast Cancer Unit, The Royal Marsden NHS Foundation Trust, London, UK
| | - Angela Swampillai
- Department of Clinical Oncology, Guy's and St Thomas' Hospital NHS Foundation Trust, London, UK
- Breast Cancer Now Research Unit, Guy's Hospital, King's College London, London, UK
| | - Tomasz Jankowski
- Department of Pneumology, Oncology and Allergology, Medical University of Lublin, Lublin, Poland
| | - Joo Hyuk Sohn
- Division of Medical Oncology, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Republic of Korea
| | | | | | - Sercan Aksoy
- Medical Oncology Department, Hacettepe University Cancer Institute, Ankara, Turkey
| | | | | | - Antonio Antón-Torres
- Department of Medical Oncology, Miguel Servet University Hospital and Aragon Health Research Institute, Zaragoza, Spain
| | | | | | | | - Karen A Gelmon
- Department of Medical Oncology, BC Cancer, University of British Columbia, Vancouver, Canada.
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