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Liefaard MC, van der Voort A, van Ramshorst MS, Sanders J, Vonk S, Horlings HM, Siesling S, de Munck L, van Leeuwen AE, Kleijn M, Mittempergher L, Kuilman MM, Glas AM, Wesseling J, Lips EH, Sonke GS. BluePrint molecular subtypes predict response to neoadjuvant pertuzumab in HER2-positive breast cancer. Breast Cancer Res 2023; 25:71. [PMID: 37337299 DOI: 10.1186/s13058-023-01664-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 05/25/2023] [Indexed: 06/21/2023] Open
Abstract
BACKGROUND The introduction of pertuzumab has greatly improved pathological complete response (pCR) rates in HER2-positive breast cancer, yet effects on long-term survival have been limited and it is uncertain which patients derive most benefit. In this study, we determine the prognostic value of BluePrint subtyping in HER2-positive breast cancer. Additionally, we evaluate its use as a biomarker for predicting response to trastuzumab-containing neoadjuvant chemotherapy with or without pertuzumab. METHODS From a cohort of patients with stage II-III HER2-positive breast cancer who were treated with neoadjuvant chemotherapy and trastuzumab with or without pertuzumab, 836 patients were selected for microarray gene expression analysis, followed by readout of BluePrint standard (HER2, Basal and Luminal) and dual subtypes (HER2-single, Basal-single, Luminal-single, HER2-Basal, Luminal-HER2, Luminal-HER2-Basal). The associations between subtypes and pathological complete response (pCR), overall survival (OS) and breast cancer-specific survival (BCSS) were assessed, and pertuzumab benefit was evaluated within the BluePrint subgroups. RESULTS BluePrint results were available for 719 patients. In patients with HER2-type tumors, the pCR rate was 71.9% in patients who received pertuzumab versus 43.5% in patients who did not (adjusted Odds Ratio 3.43, 95% CI 2.36-4.96). Additionally, a significantly decreased hazard was observed for both OS (adjusted hazard ratio [aHR] 0.45, 95% CI 0.25-0.80) and BCSS (aHR 0.46, 95% CI 0.24-0.86) with pertuzumab treatment. Findings were similar in the HER2-single subgroup. No significant benefit of pertuzumab was seen in other subtypes. CONCLUSIONS In patients with HER2-type or HER2-single-type tumors, pertuzumab significantly improved the pCR rate and decreased the risk of breast cancer mortality, which was not observed in other subtypes. BluePrint subtyping may be valuable in future studies to identify patients that are likely to be highly sensitive to HER2-targeting agents.
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Affiliation(s)
- M C Liefaard
- Division of Molecular Pathology, The Netherlands Cancer Institute, Amsterdam, The Netherlands
- Department of Medical Oncology, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - A van der Voort
- Department of Medical Oncology, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - M S van Ramshorst
- Department of Medical Oncology, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - J Sanders
- Department of Pathology, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - S Vonk
- Division of Molecular Pathology, The Netherlands Cancer Institute, Amsterdam, The Netherlands
- Core Facility Molecular Pathology and Biobanking, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - H M Horlings
- Department of Pathology, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - S Siesling
- Department of Research and Development, Netherlands Comprehensive Cancer Organization (IKNL), Utrecht, The Netherlands
- Department of Health Technology and Services Research, Technical Medical Centre, University of Twente, Enschede, The Netherlands
| | - L de Munck
- Department of Research and Development, Netherlands Comprehensive Cancer Organization (IKNL), Utrecht, The Netherlands
| | - A E van Leeuwen
- Dutch Breast Cancer Research Group, BOOG Study Center, Amsterdam, The Netherlands
| | - M Kleijn
- Department of Research and Development, Agendia NV, Amsterdam, The Netherlands
| | - L Mittempergher
- Department of Research and Development, Agendia NV, Amsterdam, The Netherlands
| | - M M Kuilman
- Department of Research and Development, Agendia NV, Amsterdam, The Netherlands
| | - A M Glas
- Department of Research and Development, Agendia NV, Amsterdam, The Netherlands
| | - J Wesseling
- Division of Molecular Pathology, The Netherlands Cancer Institute, Amsterdam, The Netherlands
- Department of Pathology, The Netherlands Cancer Institute, Amsterdam, The Netherlands
- Department of Pathology, Leiden University Medical Center, Leiden, The Netherlands
| | - E H Lips
- Division of Molecular Pathology, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - G S Sonke
- Department of Medical Oncology, The Netherlands Cancer Institute, Amsterdam, The Netherlands.
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Whitworth PW, Beitsch PD, Murray MK, Richards PD, Mislowsky A, Dul CL, Pellicane JV, Baron PL, Rahman RL, Lee LA, Dupree BB, Kelemen PR, Ashikari AY, Budway RJ, Lopez-Penalver C, Dooley W, Wang S, Dauer P, Menicucci AR, Yoder EB, Finn C, Blumencranz LE, Audeh W. Genomic Classification of HER2-Positive Patients With 80-Gene and 70-Gene Signatures Identifies Diversity in Clinical Outcomes With HER2-Targeted Neoadjuvant Therapy. JCO Precis Oncol 2022; 6:e2200197. [PMID: 36108259 PMCID: PMC9489196 DOI: 10.1200/po.22.00197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The prospective Neoadjuvant Breast Registry Symphony Trial compared the 80-gene molecular subtyping signature with clinical assessment by immunohistochemistry and/or fluorescence in situ hybridization in predicting pathologic complete response (pCR) and 5-year outcomes in patients with early-stage breast cancer.
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Affiliation(s)
- Pat W Whitworth
- Nashville Breast Center, Nashville, TN.,Targeted Medical Education, Cupertino, CA
| | - Peter D Beitsch
- Targeted Medical Education, Cupertino, CA.,Dallas Surgical Group, Dallas, TX
| | - Mary K Murray
- Akron General Medical Center, Akron, OH.,Cleveland Clinic Akron General, Akron, OH
| | | | - Angela Mislowsky
- Tidelands Health, Coastal Carolina Breast Center, Murrells Inlet, SC
| | - Carrie L Dul
- Ascension St John Hospital Great Lakes Cancer Management Specialists, Grosse Pointe Woods, MI
| | | | - Paul L Baron
- Breast and Melanoma Specialist of Charleston, Charleston, SC.,Lenox Hill Hospital, New York, NY
| | | | - Laura A Lee
- Comprehensive Cancer Center, Palm Springs, CA
| | - Beth B Dupree
- St Mary Medical/Alliance Cancer Specialists, Langhorne, PA.,Holy Redeemer Health System, Sedona, AZ
| | - Pond R Kelemen
- Ashikari Breast Center, Sleepy Hollow, NY.,Northwell Health Physician Partners, Mount Kisco, NY
| | - Andrew Y Ashikari
- Ashikari Breast Center, Sleepy Hollow, NY.,Northwell Health Physician Partners, Mount Kisco, NY.,Zucker School of Medicine, Hofstra University, Hempstead, NY
| | | | | | - William Dooley
- Breast Institute, University of Oklahoma Health Sciences, Oklahoma City, OK.,Stephenson Cancer Center, Oklahoma City, OK
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Kuilman MM, Ellappalayam A, Barcaru A, Haan JC, Bhaskaran R, Wehkamp D, Menicucci AR, Audeh WM, Mittempergher L, Glas AM. BluePrint breast cancer molecular subtyping recognizes single and dual subtype tumors with implications for therapeutic guidance. Breast Cancer Res Treat 2022; 195:263-274. [PMID: 35984580 PMCID: PMC9464757 DOI: 10.1007/s10549-022-06698-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 07/27/2022] [Indexed: 12/05/2022]
Abstract
Purpose BluePrint (BP) is an 80-gene molecular subtyping test that classifies early-stage breast cancer (EBC) into Basal, Luminal, and HER2 subtypes. In most cases, breast tumors have one dominant subtype, representative of a single activated pathway. However, some tumors show a statistically equal representation of more than one subtype, referred to as dual subtype. This study aims to identify and examine dual subtype tumors by BP to understand their biology and possible implications for treatment guidance. Methods The BP scores of over 15,000 tumor samples from EBC patients were analyzed, and the differences between the highest and the lowest scoring subtypes were calculated. Based upon the distribution of the differences between BP scores, a threshold was determined for each subtype to identify dual versus single subtypes. Results Approximately 97% of samples had one single activated BluePrint molecular subtype, whereas ~ 3% of samples were classified as BP dual subtype. The most frequently occurring dual subtypes were the Luminal-Basal-type and Luminal-HER2-type. Luminal-Basal-type displays a distinct biology from the Luminal single type and Basal single type. Burstein’s classification of the single and dual Basal samples showed that the Luminal-Basal-type is mostly classified as ‘luminal androgen receptor’ and ‘mesenchymal’ subtypes, supporting molecular evidence of AR activation in the Luminal-Basal-type tumors. Tumors classified as Luminal-HER2-type resemble features of both Luminal-single-type and HER2-single-type. However, patients with dual Luminal-HER2-type have a lower pathological complete response after receiving HER2-targeted therapies in addition to chemotherapy in comparison with patients with a HER2-single-type. Conclusion This study demonstrates that BP identifies tumors with two active functional pathways (dual subtype) with specific transcriptional characteristics and highlights the added value of distinguishing BP dual from single subtypes as evidenced by distinct treatment response rates. Supplementary Information The online version contains supplementary material available at 10.1007/s10549-022-06698-x.
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Affiliation(s)
- Midas M Kuilman
- Department of Research and Development, Agendia N.V, Radarweg 60, 1043 NT, Amsterdam, The Netherlands
| | - Architha Ellappalayam
- Department of Research and Development, Agendia N.V, Radarweg 60, 1043 NT, Amsterdam, The Netherlands
| | - Andrei Barcaru
- Department of Research and Development, Agendia N.V, Radarweg 60, 1043 NT, Amsterdam, The Netherlands
| | - Josien C Haan
- Department of Research and Development, Agendia N.V, Radarweg 60, 1043 NT, Amsterdam, The Netherlands
| | - Rajith Bhaskaran
- Department of Research and Development, Agendia N.V, Radarweg 60, 1043 NT, Amsterdam, The Netherlands
| | - Diederik Wehkamp
- Department of Research and Development, Agendia N.V, Radarweg 60, 1043 NT, Amsterdam, The Netherlands
| | - Andrea R Menicucci
- Department of Medical Affairs, Agendia Inc, 22 Morgan, Irvine, CA, 92618, USA
| | - William M Audeh
- Department of Medical Affairs, Agendia Inc, 22 Morgan, Irvine, CA, 92618, USA
| | - Lorenza Mittempergher
- Department of Research and Development, Agendia N.V, Radarweg 60, 1043 NT, Amsterdam, The Netherlands.
| | - Annuska M Glas
- Department of Research and Development, Agendia N.V, Radarweg 60, 1043 NT, Amsterdam, The Netherlands.
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