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Matsubara K, Hayakawa N, Aida K, Koike J, Kikuchi E. Renal pelvic plasmacytoid subtype urothelial carcinoma accompanied with solitary mammary metastasis. Int Cancer Conf J 2024; 13:296-300. [PMID: 38962031 PMCID: PMC11217202 DOI: 10.1007/s13691-024-00681-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Accepted: 04/04/2024] [Indexed: 07/05/2024] Open
Abstract
A 72-year-old female was referred to our institution for further evaluation of right renal tumor detected during work-up for macroscopic hematuria in other hospital. CT urography performed at our institution suggested renal pelvic tumor. Voiding cytology was atypical. CT also revealed a small mass in the right mammary gland. Percutaneous needle biopsies were performed on the right mammary gland and renal mass, leading to a pathological diagnosis of UC with plasmacytoid subtype, suggesting metastasis from the renal pelvic UC to the mammary gland. She had a favorable response to four cycles of dose-dense MVAC therapy; therefore, we performed nephroureterectomy. One month after nephroureterectomy, new intraperitoneal metastatic lesions were observed and pembrolizumab therapy was started. After seven doses of pembrolizumab, CT revealed a marked size reduction of intraperitoneal metastases and the mammary metastasis remained small.
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Affiliation(s)
- Keisuke Matsubara
- Department of Urology, St. Marianna University School of Medicine, 2-16-1 Sugao, Miyamae-ku, Kawasaki-shi, Kanagawa 216-8511 Japan
| | - Nozomi Hayakawa
- Department of Urology, St. Marianna University School of Medicine, 2-16-1 Sugao, Miyamae-ku, Kawasaki-shi, Kanagawa 216-8511 Japan
| | - Koichiro Aida
- Department of Urology, St. Marianna University School of Medicine, 2-16-1 Sugao, Miyamae-ku, Kawasaki-shi, Kanagawa 216-8511 Japan
| | - Junki Koike
- Department of Diagnostic Pathology, St. Marianna University School of Medicine, 2-16-1 Sugao, Miyamae-Ku, Kawasaki-Shi, Kanagawa 216-8511 Japan
| | - Eiji Kikuchi
- Department of Urology, St. Marianna University School of Medicine, 2-16-1 Sugao, Miyamae-ku, Kawasaki-shi, Kanagawa 216-8511 Japan
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2
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Flaherty RL, Sflomos G, Brisken C. Is There a Special Role for Ovarian Hormones in the Pathogenesis of Lobular Carcinoma? Endocrinology 2024; 165:bqae031. [PMID: 38551031 PMCID: PMC10988861 DOI: 10.1210/endocr/bqae031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Indexed: 04/04/2024]
Abstract
Lobular carcinoma represent the most common special histological subtype of breast cancer, with the majority classed as hormone receptor positive. Rates of invasive lobular carcinoma in postmenopausal women have been seen to increase globally, while other hormone receptor-positive breast cancers proportionally have not followed the same trend. This has been linked to exposure to exogenous ovarian hormones such as hormone replacement therapy. Reproductive factors resulting in increased lifetime exposure to endogenous ovarian hormones have also been linked to an increased risk of lobular breast cancer, and taken together, these data make a case for the role of ovarian hormones in the genesis and progression of the disease. In this review, we summarize current understanding of the epidemiological associations between ovarian hormones and lobular breast cancer and highlight mechanistic links that may underpin the etiology and biology.
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Affiliation(s)
- Renée L Flaherty
- Division of Breast Cancer Research, The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London SW3 6JB, UK
| | - George Sflomos
- Swiss Institute for Experimental Cancer Research, School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Cathrin Brisken
- Division of Breast Cancer Research, The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London SW3 6JB, UK
- Swiss Institute for Experimental Cancer Research, School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
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3
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Carvalho FM. Triple-negative breast cancer: from none to multiple therapeutic targets in two decades. Front Oncol 2023; 13:1244781. [PMID: 38023167 PMCID: PMC10666917 DOI: 10.3389/fonc.2023.1244781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Accepted: 10/24/2023] [Indexed: 12/01/2023] Open
Abstract
Triple-negative breast cancers (TNBCs) are more likely to occur in younger patients and have a poor prognosis. They are highly heterogeneous tumors consisting of different molecular subtypes. The only common characteristic among them is the absence of targets for endocrine therapy and human epidermal growth factor receptor 2 (HER2) blockade. In the past two decades, there has been an increased understanding of these tumors from a molecular perspective, leading to their stratification according to new therapeutic strategies. TNBC has ushered breast carcinomas into the era of immunotherapy. The higher frequency of germline BRCA mutations in these tumors enables targeting this repair defect by drugs like PARP inhibitors, resulting in synthetic lethality in neoplastic cells. Additionally, we have the identification of new molecules to which this generation of smart drugs, such as antibody-drug conjugates (ADCs), are directed. In this review, we will discuss the trajectory of this knowledge in a systematic manner, presenting the molecular bases, therapeutic possibilities, and biomarkers.
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Affiliation(s)
- Filomena Marino Carvalho
- Department of Pathology, Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
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4
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Joshi U, Budhathoki P, Gaire S, Yadav SK, Shah A, Adhikari A, Choong G, Couzi R, Giridhar KV, Leon-Ferre RA, Boughey JC, Hieken TJ, Mutter R, Ruddy KJ, Haddad TC, Goetz MP, Couch FJ, Yadav S. Clinical outcomes and prognostic factors in triple-negative invasive lobular carcinoma of the breast. Breast Cancer Res Treat 2023; 200:217-224. [PMID: 37210429 PMCID: PMC10782581 DOI: 10.1007/s10549-023-06959-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Accepted: 04/21/2023] [Indexed: 05/22/2023]
Abstract
PURPOSE Triple-negative invasive lobular carcinoma (TN-ILC) of breast cancer is a rare disease and the clinical outcomes and prognostic factors are not well-defined. METHODS Women with stage I-III TN-ILC or triple-negative invasive ductal carcinoma (TN-IDC) of the breast undergoing mastectomy or breast-conserving surgery between 2010 and 2018 in the National Cancer Database were included. Kaplan-Meier curves and multivariate Cox proportional hazard regression were used to compare overall survival (OS) and evaluate prognostic factors. Multivariate logistic regression was performed to analyze the factors associated with pathological response to neoadjuvant chemotherapy. RESULTS The median age at diagnosis for women with TN-ILC was 67 years compared to 58 years in TN-IDC (p < 0.001). There was no significant difference in the OS between TN-ILC and TN-IDC in multivariate analysis (HR 0.96, p = 0.44). Black race and higher TNM stage were associated with worse OS, whereas receipt of chemotherapy or radiation was associated with better OS in TN-ILC. Among women with TN-ILC receiving neoadjuvant chemotherapy, the 5-year OS was 77.3% in women with a complete pathological response (pCR) compared to 39.8% in women without any response. The odds of achieving pCR following neoadjuvant chemotherapy were significantly lower in women with TN-ILC compared to TN-IDC (OR 0.53, p < 0.001). CONCLUSION Women with TN-ILC are older at diagnosis but have similar OS compared to TN-IDC after adjusting for tumor and demographic characteristics. Administration of chemotherapy was associated with improved OS in TN-ILC, but women with TN-ILC were less likely to achieve complete response to neoadjuvant therapy compared to TN-IDC.
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Affiliation(s)
- Utsav Joshi
- Department of Internal Medicine, Rochester General Hospital, Rochester, NY, 14621, USA
| | - Pravash Budhathoki
- Department of Internal Medicine, Bronxcare Health System, Bronx, NY, 10457, USA
| | - Suman Gaire
- Department of Internal Medicine, Mount Sinai Hospital Chicago, Chicago, IL, 60608, USA
| | - Sumeet K Yadav
- Department of Hospital Internal Medicine, Mayo Clinic, Mankato, MN, 56001, USA
| | - Anish Shah
- Department of Internal Medicine, Bronxcare Health System, Bronx, NY, 10457, USA
| | - Anurag Adhikari
- Department of Internal Medicine, Jacobi Medical Center, New York, NY, 10461, USA
| | - Grace Choong
- Department of Oncology, Mayo Clinic, Rochester, MN, 55905, USA
| | - Rima Couzi
- Department of Oncology, Johns Hopkins Hospital, Baltimore, MD, 21231, USA
| | | | | | - Judy C Boughey
- Division of Breast and Melanoma Surgical Oncology, Department of Surgery, Mayo Clinic, Rochester, MN, 55905, USA
| | - Tina J Hieken
- Division of Breast and Melanoma Surgical Oncology, Department of Surgery, Mayo Clinic, Rochester, MN, 55905, USA
| | - Robert Mutter
- Department of Radiation Oncology, Mayo Clinic, Rochester, MN, 55905, USA
| | - Kathryn J Ruddy
- Department of Oncology, Mayo Clinic, Rochester, MN, 55905, USA
| | - Tufia C Haddad
- Department of Oncology, Mayo Clinic, Rochester, MN, 55905, USA
| | - Matthew P Goetz
- Department of Oncology, Mayo Clinic, Rochester, MN, 55905, USA
| | - Fergus J Couch
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, 55905, USA
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5
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Thomas A, Reis-Filho JS, Geyer CE, Wen HY. Rare subtypes of triple negative breast cancer: Current understanding and future directions. NPJ Breast Cancer 2023; 9:55. [PMID: 37353557 DOI: 10.1038/s41523-023-00554-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Accepted: 05/19/2023] [Indexed: 06/25/2023] Open
Abstract
Rare subtypes of triple-negative breast cancers (TNBC) are a heterogenous group of tumors, comprising 5-10% of all TNBCs. Despite accounting for an absolute number of cases in aggregate approaching that of other less common, but well studied solid tumors, rare subtypes of triple-negative disease remain understudied. Low prevalence, diagnostic challenges and overlapping diagnoses have hindered consistent categorization of these breast cancers. Here we review epidemiology, histology and clinical and molecular characteristics of metaplastic, triple-negative lobular, apocrine, adenoid cystic, secretory and high-grade neuroendocrine TNBCs. Medullary pattern invasive ductal carcinoma no special type, which until recently was a considered a distinct subtype, is also discussed. With this background, we review how applying biological principals often applied to study TNBC no special type could improve our understanding of rare TNBCs. These could include the utilization of targeted molecular approaches or disease agnostic tools such as tumor mutational burden or germline mutation-directed treatments. Burgeoning data also suggest that pathologic response to neoadjuvant therapy and circulating tumor DNA have value in understanding rare subtypes of TNBC. Finally, we discuss a framework for advancing disease-specific knowledge in this space. While the conduct of randomized trials in rare TNBC subtypes has been challenging, re-envisioning trial design and technologic tools may offer new opportunities. These include embedding rare TNBC subtypes in umbrella studies of rare tumors, retrospective review of contemporary trials, prospective identification of patients with rare TNBC subtypes entering on clinical trials and querying big data for outcomes of patients with rare breast tumors.
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Affiliation(s)
- Alexandra Thomas
- Department of Internal Medicine, Atrium Health Wake Forest Baptist Cancer Center, Winston-Salem, NC, USA.
| | - Jorge S Reis-Filho
- Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Charles E Geyer
- Department of Medicine, University of Pittsburgh UPMC Hillman Cancer Center, Pittsburgh, PA, USA
| | - Hannah Y Wen
- Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
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6
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Bergeron A, Bertaut A, Beltjens F, Charon-Barra C, Amet A, Jankowski C, Desmoulins I, Ladoire S, Arnould L. Anticipating changes in the HER2 status of breast tumours with disease progression-towards better treatment decisions in the new era of HER2-low breast cancers. Br J Cancer 2023:10.1038/s41416-023-02287-x. [PMID: 37120672 DOI: 10.1038/s41416-023-02287-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 04/11/2023] [Accepted: 04/17/2023] [Indexed: 05/01/2023] Open
Abstract
BACKGROUND HER2 expression is often negative or low in primary breast cancers (BCs) but its changes with disease progression remain poorly known. We aimed to estimate them between primary and recurrent tumours, and identify predictive factors. METHODS We compared the HER2 status, and clinical and pathological characteristics by its evolution category (stable or changed), between all primary BCs and matched recurrences registered in our database in 2000-2020 (n = 512). RESULTS HER2-low tumours were the most prevalent at diagnosis (44.9%), followed by HER2-negative tumours (39.3%). HER2 status significantly changed in 37.3% of recurrences, mainly of HER2-negative and HER2-low tumours. HER2-negative tumours which relapsed as HER2-low significantly more frequently expressed oestrogen receptors (ER) and recurred later than stably HER2-negative tumours. Changed HER2 status in distant metastases correlated with lower proliferation rates and higher ER expression in primary tumours, and among metastases of hormone receptor-positive (HR+) tumours-with weak progesterone receptor (PR) expression in primary tumours. CONCLUSIONS HER2 status changes with BC progression, with enrichment of HER2-low tumours in advanced stages. The ER+/PR- status, low proliferation index and time to late recurrence correlated with these changes. These findings highlight the need of retesting recurrences, especially of HR + primary tumours, to identify candidates for new anti-HER2 therapies.
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Affiliation(s)
- Anthony Bergeron
- Unit of Pathology, Department of Biology and Pathology of Tumours, Georges-François Leclerc [Cancer] Centre, 1 rue du Professeur Marion, 21000, Dijon, France.
| | - Aurélie Bertaut
- Unit of Methodology and Biostatistics, Georges-François Leclerc [Cancer] Center, 1 rue du Professeur Marion, 21000, Dijon, France
| | - Françoise Beltjens
- Unit of Pathology, Department of Biology and Pathology of Tumours, Georges-François Leclerc [Cancer] Centre, 1 rue du Professeur Marion, 21000, Dijon, France
| | - Céline Charon-Barra
- Unit of Pathology, Department of Biology and Pathology of Tumours, Georges-François Leclerc [Cancer] Centre, 1 rue du Professeur Marion, 21000, Dijon, France
| | - Alix Amet
- Department of Surgery, Georges-François Leclerc [Cancer] Center, 1 rue du Professeur Marion, 21000, Dijon, France
| | - Clémentine Jankowski
- Department of Surgery, Georges-François Leclerc [Cancer] Center, 1 rue du Professeur Marion, 21000, Dijon, France
| | - Isabelle Desmoulins
- Department of Medical Oncology, Georges-François Leclerc [Cancer] Center, 1 rue du Professeur Marion, 21000, Dijon, France
| | - Sylvain Ladoire
- Department of Medical Oncology, Georges-François Leclerc [Cancer] Center, 1 rue du Professeur Marion, 21000, Dijon, France
- INSERM U1231, 7 boulevard Jeanne d'Arc, 21000, Dijon, France
- University of Burgundy-Franche Comté, 32 avenue de l'Observatoire, 25000, Besançon, France
| | - Laurent Arnould
- Unit of Pathology, Department of Biology and Pathology of Tumours, Georges-François Leclerc [Cancer] Centre, 1 rue du Professeur Marion, 21000, Dijon, France
- INSERM U1231, 7 boulevard Jeanne d'Arc, 21000, Dijon, France
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7
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Voorwerk L, Isaeva OI, Horlings HM, Balduzzi S, Chelushkin M, Bakker NAM, Champanhet E, Garner H, Sikorska K, Loo CE, Kemper I, Mandjes IAM, de Maaker M, van Geel JJL, Boers J, de Boer M, Salgado R, van Dongen MGJ, Sonke GS, de Visser KE, Schumacher TN, Blank CU, Wessels LFA, Jager A, Tjan-Heijnen VCG, Schröder CP, Linn SC, Kok M. PD-L1 blockade in combination with carboplatin as immune induction in metastatic lobular breast cancer: the GELATO trial. NATURE CANCER 2023; 4:535-549. [PMID: 37038006 PMCID: PMC10132987 DOI: 10.1038/s43018-023-00542-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Accepted: 03/08/2023] [Indexed: 04/12/2023]
Abstract
Invasive lobular breast cancer (ILC) is the second most common histological breast cancer subtype, but ILC-specific trials are lacking. Translational research revealed an immune-related ILC subset, and in mouse ILC models, synergy between immune checkpoint blockade and platinum was observed. In the phase II GELATO trial ( NCT03147040 ), patients with metastatic ILC were treated with weekly carboplatin (area under the curve 1.5 mg ml-1 min-1) as immune induction for 12 weeks and atezolizumab (PD-L1 blockade; triweekly) from the third week until progression. Four of 23 evaluable patients had a partial response (17%), and 2 had stable disease, resulting in a clinical benefit rate of 26%. From these six patients, four had triple-negative ILC (TN-ILC). We observed higher CD8+ T cell infiltration, immune checkpoint expression and exhausted T cells after treatment. With this GELATO trial, we show that ILC-specific clinical trials are feasible and demonstrate promising antitumor activity of atezolizumab with carboplatin, particularly for TN-ILC, and provide insights for the design of highly needed ILC-specific trials.
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Affiliation(s)
- Leonie Voorwerk
- Division of Tumor Biology and Immunology, The Netherlands Cancer Institute, Amsterdam, the Netherlands
| | - Olga I Isaeva
- Division of Tumor Biology and Immunology, The Netherlands Cancer Institute, Amsterdam, the Netherlands
| | - Hugo M Horlings
- Department of Pathology, The Netherlands Cancer Institute, Amsterdam, the Netherlands
| | - Sara Balduzzi
- Department of Biometrics, The Netherlands Cancer Institute, Amsterdam, the Netherlands
| | - Maksim Chelushkin
- Division of Tumor Biology and Immunology, The Netherlands Cancer Institute, Amsterdam, the Netherlands
- Division of Molecular Carcinogenesis, The Netherlands Cancer Institute, Amsterdam, the Netherlands
| | - Noor A M Bakker
- Division of Tumor Biology and Immunology, The Netherlands Cancer Institute, Amsterdam, the Netherlands
- Oncode Institute, Utrecht, the Netherlands
| | - Elisa Champanhet
- Division of Tumor Biology and Immunology, The Netherlands Cancer Institute, Amsterdam, the Netherlands
| | - Hannah Garner
- Division of Tumor Biology and Immunology, The Netherlands Cancer Institute, Amsterdam, the Netherlands
- Oncode Institute, Utrecht, the Netherlands
| | - Karolina Sikorska
- Department of Biometrics, The Netherlands Cancer Institute, Amsterdam, the Netherlands
| | - Claudette E Loo
- Department of Radiology, The Netherlands Cancer Institute, Amsterdam, the Netherlands
| | - Inge Kemper
- Department of Medical Oncology, The Netherlands Cancer Institute, Amsterdam, the Netherlands
| | - Ingrid A M Mandjes
- Department of Biometrics, The Netherlands Cancer Institute, Amsterdam, the Netherlands
| | - Michiel de Maaker
- Division of Molecular Pathology, The Netherlands Cancer Institute, Amsterdam, the Netherlands
| | - Jasper J L van Geel
- Department of Medical Oncology, University Medical Center Groningen, Groningen, the Netherlands
| | - Jorianne Boers
- Department of Medical Oncology, University Medical Center Groningen, Groningen, the Netherlands
| | - Maaike de Boer
- Department of Medical Oncology, GROW, Maastricht University Medical Center, Maastricht, the Netherlands
| | - Roberto Salgado
- Department of Pathology, GZA-ZNA hospitals, Antwerp, Belgium
- Division of Research, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
| | - Marloes G J van Dongen
- Department of Medical Oncology, The Netherlands Cancer Institute, Amsterdam, the Netherlands
| | - Gabe S Sonke
- Department of Medical Oncology, The Netherlands Cancer Institute, Amsterdam, the Netherlands
| | - Karin E de Visser
- Division of Tumor Biology and Immunology, The Netherlands Cancer Institute, Amsterdam, the Netherlands
- Oncode Institute, Utrecht, the Netherlands
- Department of Immunology, Leiden University Medical Center, Leiden, the Netherlands
| | - Ton N Schumacher
- Oncode Institute, Utrecht, the Netherlands
- Division of Molecular Oncology and Immunology, The Netherlands Cancer Institute, Amsterdam, the Netherlands
- Department of Hematology, Leiden University Medical Center, Leiden, the Netherlands
| | - Christian U Blank
- Department of Medical Oncology, The Netherlands Cancer Institute, Amsterdam, the Netherlands
- Division of Molecular Oncology and Immunology, The Netherlands Cancer Institute, Amsterdam, the Netherlands
| | - Lodewyk F A Wessels
- Division of Molecular Carcinogenesis, The Netherlands Cancer Institute, Amsterdam, the Netherlands
- Oncode Institute, Utrecht, the Netherlands
| | - Agnes Jager
- Department of Medical Oncology, Erasmus Medical Center, Rotterdam, the Netherlands
| | - Vivianne C G Tjan-Heijnen
- Department of Medical Oncology, GROW, Maastricht University Medical Center, Maastricht, the Netherlands
| | - Carolien P Schröder
- Department of Medical Oncology, The Netherlands Cancer Institute, Amsterdam, the Netherlands
- Department of Medical Oncology, University Medical Center Groningen, Groningen, the Netherlands
| | - Sabine C Linn
- Department of Medical Oncology, The Netherlands Cancer Institute, Amsterdam, the Netherlands
- Division of Molecular Pathology, The Netherlands Cancer Institute, Amsterdam, the Netherlands
- Department of Pathology, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Marleen Kok
- Division of Tumor Biology and Immunology, The Netherlands Cancer Institute, Amsterdam, the Netherlands.
- Department of Medical Oncology, The Netherlands Cancer Institute, Amsterdam, the Netherlands.
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8
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Joshi U, Budhathoki P, Gaire S, Yadav SK, Shah A, Adhikari A, Choong G, Couzi R, Giridhar K, Leon-Ferre R, Boughey JC, Hieken TJ, Mutter R, Ruddy KJ, Haddad TC, Goetz MP, Couch FJ, Yadav S. Clinical Outcomes and Prognostic Factors in Triple-Negative Invasive Lobular Carcinoma of the Breast. RESEARCH SQUARE 2023:rs.3.rs-2658909. [PMID: 36993608 PMCID: PMC10055567 DOI: 10.21203/rs.3.rs-2658909/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
Abstract
Purpose: Triple-negative invasive lobular carcinoma (TN-ILC) of breast cancer is a rare disease and the clinical outcomes and prognostic factors are not well-defined. Methods: Women with stage I-III TN-ILC or triple-negative invasive ductal carcinoma (TN-IDC) of the breast undergoing mastectomy or breast-conserving surgery between 2010 and 2018 in the National Cancer Database were included. Kaplan-Meier curves and multivariate Cox proportional hazard regression were used to compare overall survival (OS) and evaluate prognostic factors. Multivariate logistic regression was performed to analyze the factors associated with pathological response to neoadjuvant chemotherapy. Results: The median age at diagnosis for women with TN-ILC was 67 years compared to 58 years in TN-IDC (p<0.001). There was no significant difference in the OS between TN-ILC and TN-IDC in multivariate analysis (HR 0.96, p=0.44). Black race and higher TNM stage were associated with worse OS, whereas receipt of chemotherapy or radiation was associated with better OS in TN-ILC. Among women with TN-ILC receiving neoadjuvant chemotherapy, the 5-year OS was 77.3% in women with a complete pathological response (pCR) compared to 39.8% in women without any response. The odds of achieving pCR following neoadjuvant chemotherapy were significantly lower in women with TN-ILC compared to TN-IDC (OR 0.53, p<0.001). Conclusion: Women with TN-ILC are older at diagnosis but have similar OS compared to TN-IDC after adjusting for tumor and demographic characteristics. Administration of chemotherapy was associated with improved OS in TN-ILC, but women with TN-ILC were less likely to achieve complete response to neoadjuvant therapy compared to TN-IDC.
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Affiliation(s)
| | | | | | | | | | | | | | - Rima Couzi
- Johns Hopkins School of Medicine Department of Oncology: Johns Hopkins Medicine Sidney Kimmel Comprehensive Cancer Center
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9
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Trillo P, Sandoval J, Trapani D, Nicolò E, Zagami P, Giugliano F, Tarantino P, Vivanet G, Ascione L, Friedlaender A, Esposito A, Criscitiello C, Curigliano G. Evolution of biological features of invasive lobular breast cancer: comparison between primary tumor and metastases. Eur J Cancer 2023; 185:119-130. [PMID: 36989828 DOI: 10.1016/j.ejca.2023.02.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 02/24/2023] [Accepted: 02/27/2023] [Indexed: 03/09/2023]
Abstract
BACKGROUND Invasive lobular carcinoma (ILC) has unique clinical-biological features. Phenotypical differences between primary tumours (PTs) and metastases (M) have been described for invasive ductal carcinoma, but data on ILC are limited. METHODS We retrospectively analysed patients with recurrent ILC from our institution from 2013 to 2020. We evaluated the discordance of the oestrogen receptor (ER), progesterone receptor (PgR) and HER2 between PT and M, to understand prognostic and therapeutic implications. RESULTS Thirteen percent (n = 91) of all patients had ILC. We observed 15%, 44% and 5% of ER, PgR and HER2 status discordance between PT and M. ER/PgR discordance was related to receptor loss and HER2 mainly due to gain. PT presented a luminal-like phenotype (93%); 6% and 1% were triple-negative (TNBC) and HER2-positive. In M, there was an increase in TNBC (16%) and HER2-positive (5%). Metastasis-free survival and overall survival (OS) were different according to clinical phenotype, with poorer prognosis for HER2+ and TNBC (p < 0.001); OS after metastatic progression did not differ across phenotypes (p = 0.079). In luminal-like ILC (n = 85) at diagnosis, we found that OS after relapse was poorer in patients experiencing a phenotype switch to TNBC but improved in patients with HER2 gain (p = 0.0028). Poorer survival was reported in patients with a PgR and/or ER expression loss of ≥25%. There was HER2-low enrichment in M1 (from 37% to 58%): this change was not associated with OS (p > 0.05). CONCLUSION Our results suggest that phenotype switch after metastatic progression may be associated with patients' outcomes. Tumour biopsy in recurrent ILC could drive treatment decision-making, with prognostic implications.
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Affiliation(s)
- Pamela Trillo
- Division of New Drugs and Early Drug Development, European Institute of Oncology IRCCS, 20141 Milan, Italy; Department of Oncology and Hematology, University of Milan, 20122 Milan, Italy
| | - Josè Sandoval
- Unit of Population Epidemiology, Division and Department of Primary Care Medicine, 1205 Geneva University Hospitals, Geneva, Switzerland; Department of Oncology, Geneva University Hospitals, 1205 Geneva, Switzerland
| | - Dario Trapani
- Division of New Drugs and Early Drug Development, European Institute of Oncology IRCCS, 20141 Milan, Italy; Department of Oncology and Hematology, University of Milan, 20122 Milan, Italy
| | - Eleonora Nicolò
- Division of New Drugs and Early Drug Development, European Institute of Oncology IRCCS, 20141 Milan, Italy; Department of Oncology and Hematology, University of Milan, 20122 Milan, Italy
| | - Paola Zagami
- Division of New Drugs and Early Drug Development, European Institute of Oncology IRCCS, 20141 Milan, Italy; Department of Oncology and Hematology, University of Milan, 20122 Milan, Italy
| | - Federica Giugliano
- Division of New Drugs and Early Drug Development, European Institute of Oncology IRCCS, 20141 Milan, Italy; Department of Oncology and Hematology, University of Milan, 20122 Milan, Italy
| | - Paolo Tarantino
- Breast Oncology Program, Dana-Farber Cancer Institute, 02115 Boston, USA; Harvard Medical School, 02115 Boston, USA
| | - Grazia Vivanet
- Division of New Drugs and Early Drug Development, European Institute of Oncology IRCCS, 20141 Milan, Italy; Department of Oncology and Hematology, University of Milan, 20122 Milan, Italy
| | - Liliana Ascione
- Division of New Drugs and Early Drug Development, European Institute of Oncology IRCCS, 20141 Milan, Italy; Department of Oncology and Hematology, University of Milan, 20122 Milan, Italy
| | - Alex Friedlaender
- Department of Oncology, Geneva University Hospitals, 1205 Geneva, Switzerland
| | - Angela Esposito
- Division of New Drugs and Early Drug Development, European Institute of Oncology IRCCS, 20141 Milan, Italy
| | - Carmen Criscitiello
- Division of New Drugs and Early Drug Development, European Institute of Oncology IRCCS, 20141 Milan, Italy; Department of Oncology and Hematology, University of Milan, 20122 Milan, Italy
| | - Giuseppe Curigliano
- Division of New Drugs and Early Drug Development, European Institute of Oncology IRCCS, 20141 Milan, Italy; Department of Oncology and Hematology, University of Milan, 20122 Milan, Italy.
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10
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Kada Mohammed S, Billa O, Ladoire S, Jankowski C, Desmoulins I, Poillot ML, Coutant C, Beltjens F, Dabakuyo S, Arnould L. HER2-positive invasive lobular carcinoma: a rare breast cancer which may not necessarily require anti-HER2 therapy. A population-based study. Breast Cancer 2023; 30:343-353. [PMID: 36715845 DOI: 10.1007/s12282-022-01432-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Accepted: 12/21/2022] [Indexed: 01/31/2023]
Abstract
BACKGROUND HER2-positive (HER2 +) invasive lobular breast cancer (ILC) is rare and poorly characterised. In particular, patient outcomes compared to those associated with HER2 + invasive ductal cancer (IDC) and HER2-negative (HER2 -) ILC, as well as the benefits of anti-HER2 therapy, are not well established. METHODS We analysed the data from the Côte d'Or Registry of Breast and Gynaecological Cancers (France) for all patients diagnosed with early-stage HER2 + ILC (62 cases), HER2 + IDC (833 cases) and HER2 - ILC (685 cases) between 1998 and 2015 to compare overall and disease-free survival (OS and DFS) between these groups in correlation with anti-HER2 therapy. RESULTS ILCs were associated with older age, larger tumours, lower histological grades, higher hormonal receptor positivity rates and multifocality, and more common endocrine therapy. OS and DFS between the three groups did not differ. We found that anti-HER2 therapy was associated with a survival benefit in patients with HER2 + IDC. In contrast, the survival of HER2 + ILC patients was not improved by anti-HER2 treatment, remaining close to that of HER2 - ILC patients. CONCLUSION HER2 + ILC seems not to be associated with better outcomes than HER2 + IDC but may not differ from HER2 - ILC in terms of survival.
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Affiliation(s)
- Samia Kada Mohammed
- Department of Gynaecology and Obstetrics, Jean Verdier Hospital, Assistance Publique Des Hôpitaux de Paris (APHP), Avenue du 14 Juillet, 93140, Bondy, France.
| | - Oumar Billa
- Department of Epidemiology, Georges-François Leclerc Centre, 1 Rue du Professeur Marion, 21000, Dijon, France
| | - Sylvain Ladoire
- Department of Medical Oncology, Georges-François Leclerc Centre, 1 Rue du Professeur Marion, 21000, Dijon, France
- INSERM U1231, 21000, Dijon, France
- University of Burgundy-Franche Comté, 21000, Dijon, France
| | - Clementine Jankowski
- Department of Surgery, Georges-François Leclerc Centre, 1 Rue du Professeur Marion, 21000, Dijon, France
| | - Isabelle Desmoulins
- Department of Medical Oncology, Georges-François Leclerc Centre, 1 Rue du Professeur Marion, 21000, Dijon, France
| | - Marie-Laure Poillot
- Department of Epidemiology, Georges-François Leclerc Centre, 1 Rue du Professeur Marion, 21000, Dijon, France
| | - Charles Coutant
- University of Burgundy-Franche Comté, 21000, Dijon, France
- Department of Surgery, Georges-François Leclerc Centre, 1 Rue du Professeur Marion, 21000, Dijon, France
| | - Françoise Beltjens
- Unit of Pathology, Department of Tumour Biology and Pathology, Georges-François Leclerc Centre, 1 Rue du Professeur Marion, 21000, Dijon, France
| | - Sandrine Dabakuyo
- Department of Epidemiology, Georges-François Leclerc Centre, 1 Rue du Professeur Marion, 21000, Dijon, France
| | - Laurent Arnould
- INSERM U1231, 21000, Dijon, France
- Unit of Pathology, Department of Tumour Biology and Pathology, Georges-François Leclerc Centre, 1 Rue du Professeur Marion, 21000, Dijon, France
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11
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Ogier du Terrail J, Leopold A, Joly C, Béguier C, Andreux M, Maussion C, Schmauch B, Tramel EW, Bendjebbar E, Zaslavskiy M, Wainrib G, Milder M, Gervasoni J, Guerin J, Durand T, Livartowski A, Moutet K, Gautier C, Djafar I, Moisson AL, Marini C, Galtier M, Balazard F, Dubois R, Moreira J, Simon A, Drubay D, Lacroix-Triki M, Franchet C, Bataillon G, Heudel PE. Federated learning for predicting histological response to neoadjuvant chemotherapy in triple-negative breast cancer. Nat Med 2023; 29:135-146. [PMID: 36658418 DOI: 10.1038/s41591-022-02155-w] [Citation(s) in RCA: 25] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Accepted: 11/23/2022] [Indexed: 01/21/2023]
Abstract
Triple-negative breast cancer (TNBC) is a rare cancer, characterized by high metastatic potential and poor prognosis, and has limited treatment options. The current standard of care in nonmetastatic settings is neoadjuvant chemotherapy (NACT), but treatment efficacy varies substantially across patients. This heterogeneity is still poorly understood, partly due to the paucity of curated TNBC data. Here we investigate the use of machine learning (ML) leveraging whole-slide images and clinical information to predict, at diagnosis, the histological response to NACT for early TNBC women patients. To overcome the biases of small-scale studies while respecting data privacy, we conducted a multicentric TNBC study using federated learning, in which patient data remain secured behind hospitals' firewalls. We show that local ML models relying on whole-slide images can predict response to NACT but that collaborative training of ML models further improves performance, on par with the best current approaches in which ML models are trained using time-consuming expert annotations. Our ML model is interpretable and is sensitive to specific histological patterns. This proof of concept study, in which federated learning is applied to real-world datasets, paves the way for future biomarker discovery using unprecedentedly large datasets.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Camille Franchet
- Institut Universitaire du Cancer de Toulouse (IUCT) Oncopole, Toulouse, France
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12
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Choupani E, Madjd Z, Saraygord-Afshari N, Kiani J, Hosseini A. Combination of androgen receptor inhibitor enzalutamide with the CDK4/6 inhibitor ribociclib in triple negative breast cancer cells. PLoS One 2022; 17:e0279522. [PMID: 36548336 PMCID: PMC9779032 DOI: 10.1371/journal.pone.0279522] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Accepted: 12/08/2022] [Indexed: 12/24/2022] Open
Abstract
Triple-negative breast cancer (TNBC) is an aggressive subtype of breast cancer (BC) that currently lacks specific therapy options. Thus, chemotherapy continues to be the primary treatment, and developing novel targets is a top clinical focus. The androgen receptor (AR) has emerged as a therapeutic target in a subtype of TNBC, with substantial clinical benefits shown in various clinical studies. Numerous studies have shown that cancer is associated with changes in components of the cell cycle machinery. Although cell cycle cyclin-dependent kinase (CDK) 4/6 inhibitors are successful in the treatment of ER-positive BC, they are not helpful in the treatment of patients with TNBC. We investigated the possibility of combining CDK4/6 inhibitor(ribociclib) with AR inhibitor(enzalutamide) in the AR-positive TNBC cell line. Ribociclib showed an inhibitory effect in TNBC cells. Additionally, we found that enzalutamide reduced cell migration/invasion, clonogenic capacity, cell cycle progression, and cell growth in AR-positive cells. Enzalutamide therapy could increase the cytostatic impact of ribociclib in AR+ TNBC cells. Furthermore, dual inhibition of AR and CDK4/6 demonstrated synergy in an AR+ TNBC model compared to each treatment alone.
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Affiliation(s)
- Edris Choupani
- Department of Medical Biotechnology, Faculty of Allied Medical Sciences, Iran University of Medical Sciences, Tehran, Iran
| | - Zahra Madjd
- Department of Molecular Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran
- Oncopathology Research Center, Iran University of Medical Sciences, (IUMS), Tehran, Iran
| | - Neda Saraygord-Afshari
- Department of Medical Biotechnology, Faculty of Allied Medical Sciences, Iran University of Medical Sciences, Tehran, Iran
| | - Jafar Kiani
- Department of Molecular Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Arshad Hosseini
- Department of Medical Biotechnology, Faculty of Allied Medical Sciences, Iran University of Medical Sciences, Tehran, Iran
- * E-mail:
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13
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Oesterreich S, Nasrazadani A, Zou J, Carleton N, Onger T, Wright MD, Li Y, Demanelis K, Ramaswamy B, Tseng G, Lee AV, Williams N, Kruse M. Clinicopathological Features and Outcomes Comparing Patients With Invasive Ductal and Lobular Breast Cancer. J Natl Cancer Inst 2022; 114:1511-1522. [PMID: 36239760 PMCID: PMC9664185 DOI: 10.1093/jnci/djac157] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 06/16/2022] [Accepted: 08/03/2022] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND There is increasing interest in better understanding the biology and clinical presentation of invasive lobular cancer (ILC), which is the most common special histological subtype of breast cancer. Limited large contemporary data sets are available allowing comparison of clinicopathologic features between ILC and invasive ductal cancer (IDC). METHODS The Great Lakes Breast Cancer Consortium was formed to compare clinical behavior of ILC (n = 3617) and IDC (n = 30 045) from 33 662 patients treated between 1990 and 2017 at 3 large clinical centers. We used Kaplan-Meier analysis, Cox proportional hazards modeling, and propensity score matching to evaluate treatment differences and outcomes. All statistical testing used 2-sided P values. RESULTS Compared with IDC, patients with ILC were more frequently diagnosed at later stages and with more lymph node involvement (corrected P < .001). Estrogen receptor-positive ILCs were of lower grade (grade 1 and 2: 90% in ILC vs 72% in IDC) but larger in size (T3 and 4: 14.3% in ILC vs 3.4% in IDC) (corrected P < .001), and since 1990, the mean ILC size detected at diagnosis increased yearly. Patients with estrogen receptor (ER)-positive ILC underwent statistically significantly more mastectomies compared with ER-positive IDC (57% vs 46%). Using Kaplan-Meier analysis, patients with ER-positive ILC had statistically significantly worse disease-free survival and overall survival than ER-positive IDC although 6 times more IDCs were classified as high risk by OncotypeDx Breast Recurrence Score assay. CONCLUSIONS This large, retrospective, collaborative analysis with 3 clinical centers identified meaningful differences in clinicopathological features between ILC and IDC, providing further evidence that these are 2 different entities requiring different clinical management.
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Affiliation(s)
- Steffi Oesterreich
- UPMC Hillman Cancer Center, Pittsburgh, PA, USA
- Magee-Women’s Research Institute and Women’s Cancer Research Center, Pittsburgh, PA, USA
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Azadeh Nasrazadani
- UPMC Hillman Cancer Center, Pittsburgh, PA, USA
- Magee-Women’s Research Institute and Women’s Cancer Research Center, Pittsburgh, PA, USA
- Division of Hematology/Oncology, Department of Medicine, University of Pittsburgh, Pittsburgh, PA, USA
| | - Jian Zou
- Department of Biostatistics, University of Pittsburgh, Pittsburgh, PA, USA
| | - Neil Carleton
- UPMC Hillman Cancer Center, Pittsburgh, PA, USA
- Magee-Women’s Research Institute and Women’s Cancer Research Center, Pittsburgh, PA, USA
- Medical Scientist Training Program, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Tiffany Onger
- Cleveland Clinic Taussig Cancer Institute, Cleveland, OH, USA
| | | | - Yujia Li
- Department of Biostatistics, University of Pittsburgh, Pittsburgh, PA, USA
| | | | - Bhuvaneswari Ramaswamy
- James Cancer Hospital, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - George Tseng
- Department of Biostatistics, University of Pittsburgh, Pittsburgh, PA, USA
| | - Adrian V Lee
- UPMC Hillman Cancer Center, Pittsburgh, PA, USA
- Magee-Women’s Research Institute and Women’s Cancer Research Center, Pittsburgh, PA, USA
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Nicole Williams
- James Cancer Hospital, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Megan Kruse
- Cleveland Clinic Taussig Cancer Institute, Cleveland, OH, USA
- Case Western Comprehensive Cancer Center, Cleveland, OH, USA
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14
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Pinilla K, Drewett LM, Lucey R, Abraham JE. Precision Breast Cancer Medicine: Early Stage Triple Negative Breast Cancer-A Review of Molecular Characterisation, Therapeutic Targets and Future Trends. Front Oncol 2022; 12:866889. [PMID: 36003779 PMCID: PMC9393396 DOI: 10.3389/fonc.2022.866889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 05/23/2022] [Indexed: 11/29/2022] Open
Abstract
Personalised approaches to the management of all solid tumours are increasing rapidly, along with wider accessibility for clinicians. Advances in tumour characterisation and targeted therapies have placed triple-negative breast cancers (TNBC) at the forefront of this approach. TNBC is a highly heterogeneous disease with various histopathological features and is driven by distinct molecular alterations. The ability to tailor individualised and effective treatments for each patient is of particular importance in this group due to the high risk of distant recurrence and death. The mainstay of treatment across all subtypes of TNBC has historically been cytotoxic chemotherapy, which is often associated with off-target tissue toxicity and drug resistance. Neoadjuvant chemotherapy is commonly used as it allows close monitoring of early treatment response and provides valuable prognostic information. Patients who achieve a complete pathological response after neoadjuvant chemotherapy are known to have significantly improved long-term outcomes. Conversely, poor responders face a higher risk of relapse and death. The identification of those subgroups that are more likely to benefit from breakthroughs in the personalised approach is a challenge of the current era where several targeted therapies are available. This review presents an overview of contemporary practice, and promising future trends in the management of early TNBC. Platinum chemotherapy, DNA damage response (DDR) inhibitors, immune checkpoint inhibitors, inhibitors of the PI3K-AKT-mTOR, and androgen receptor (AR) pathways are some of the increasingly studied therapies which will be reviewed. We will also discuss the growing evidence for less-developed agents and predictive biomarkers that are likely to contribute to the forthcoming advances in this field. Finally, we will propose a framework for the personalised management of TNBC based upon the integration of clinico-pathological and molecular features to ensure that long-term outcomes are optimised.
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Affiliation(s)
- Karen Pinilla
- Precision Breast Cancer Institute, University of Cambridge, Cambridge, United Kingdom
- Department of Oncology, Cambridge University Hospitals NHS Foundation Trust, Cambridge, United Kingdom
- Cancer Research UK Cambridge Centre, Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, United Kingdom
| | - Lynsey M. Drewett
- Precision Breast Cancer Institute, University of Cambridge, Cambridge, United Kingdom
- Department of Oncology, Cambridge University Hospitals NHS Foundation Trust, Cambridge, United Kingdom
| | - Rebecca Lucey
- Precision Breast Cancer Institute, University of Cambridge, Cambridge, United Kingdom
- Department of Oncology, Cambridge University Hospitals NHS Foundation Trust, Cambridge, United Kingdom
| | - Jean E. Abraham
- Precision Breast Cancer Institute, University of Cambridge, Cambridge, United Kingdom
- Department of Oncology, Cambridge University Hospitals NHS Foundation Trust, Cambridge, United Kingdom
- Cancer Research UK Cambridge Centre, Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, United Kingdom
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15
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Van Baelen K, Geukens T, Maetens M, Tjan-Heijnen V, Lord CJ, Linn S, Bidard FC, Richard F, Yang WW, Steele RE, Pettitt SJ, Van Ongeval C, De Schepper M, Isnaldi E, Nevelsteen I, Smeets A, Punie K, Voorwerk L, Wildiers H, Floris G, Vincent-Salomon A, Derksen PWB, Neven P, Senkus E, Sawyer E, Kok M, Desmedt C. Current and future diagnostic and treatment strategies for patients with invasive lobular breast cancer. Ann Oncol 2022; 33:769-785. [PMID: 35605746 DOI: 10.1016/j.annonc.2022.05.006] [Citation(s) in RCA: 37] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 05/06/2022] [Accepted: 05/17/2022] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Invasive lobular breast cancer (ILC) is the second most common type of breast cancer after invasive breast cancer of no special type (NST), representing up to 15% of all breast cancers. DESIGN Latest data on ILC are presented, focusing on diagnosis, molecular make-up according to the European Society for Medical Oncology Scale for Clinical Actionability of molecular Targets (ESCAT) guidelines, treatment in the early and metastatic setting and ILC-focused clinical trials. RESULTS At the imaging level, magnetic resonance imaging-based and novel positron emission tomography/computed tomography-based techniques can overcome the limitations of currently used imaging techniques for diagnosing ILC. At the pathology level, E-cadherin immunohistochemistry could help improving inter-pathologist agreement. The majority of patients with ILC do not seem to benefit as much from (neo-)adjuvant chemotherapy as patients with NST, although chemotherapy might be required in a subset of high-risk patients. No differences in treatment efficacy are seen for anti-human epidermal growth factor receptor 2 (HER2) therapies in the adjuvant setting and cyclin-dependent kinases 4 and 6 inhibitors in the metastatic setting. The clinical utility of the commercially available prognostic gene expression-based tests is unclear for patients with ILC. Several ESCAT alterations differ in frequency between ILC and NST. Germline BRCA1 and PALB2 alterations are less frequent in patients with ILC, while germline CDH1 (gene coding for E-cadherin) alterations are more frequent in patients with ILC. Somatic HER2 mutations are more frequent in ILC, especially in metastases (15% ILC versus 5% NST). A high tumour mutational burden, relevant for immune checkpoint inhibition, is more frequent in ILC metastases (16%) than in NST metastases (5%). Tumours with somatic inactivating CDH1 mutations may be vulnerable for treatment with ROS1 inhibitors, a concept currently investigated in early and metastatic ILC. CONCLUSION ILC is a unique malignancy based on its pathological and biological features leading to differences in diagnosis as well as in treatment response, resistance and targets as compared to NST.
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Affiliation(s)
- K Van Baelen
- Laboratory for Translational Breast Cancer Research (LTBCR), Department of Oncology, KU Leuven, Leuven, Belgium; Departments of Gynaecology and Obstetrics, UZ Leuven, Leuven, Belgium
| | - T Geukens
- Laboratory for Translational Breast Cancer Research (LTBCR), Department of Oncology, KU Leuven, Leuven, Belgium; General Medical Oncology, UZ Leuven, Leuven, Belgium
| | - M Maetens
- Laboratory for Translational Breast Cancer Research (LTBCR), Department of Oncology, KU Leuven, Leuven, Belgium
| | - V Tjan-Heijnen
- Medical Oncology Department, Maastricht University Medical Center (MUMC), School of GROW, Maastricht, The Netherlands
| | - C J Lord
- The CRUK Gene Function Laboratory and Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London, UK
| | - S Linn
- Department of Pathology, University Medical Center Utrecht, Utrecht, The Netherlands; Departments of Medical Oncology, Amsterdam, The Netherlands; Molecular Pathology, Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - F-C Bidard
- Department of Medical Oncology, Institut Curie, UVSQ/Paris-Saclav University, Paris, France
| | - F Richard
- Laboratory for Translational Breast Cancer Research (LTBCR), Department of Oncology, KU Leuven, Leuven, Belgium
| | - W W Yang
- The CRUK Gene Function Laboratory and Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London, UK
| | - R E Steele
- The CRUK Gene Function Laboratory and Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London, UK
| | - S J Pettitt
- The CRUK Gene Function Laboratory and Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London, UK
| | - C Van Ongeval
- Departments of Radiology, UZ Leuven, Leuven, Belgium
| | - M De Schepper
- Laboratory for Translational Breast Cancer Research (LTBCR), Department of Oncology, KU Leuven, Leuven, Belgium; Pathology, UZ Leuven, Leuven, Belgium
| | - E Isnaldi
- Laboratory for Translational Breast Cancer Research (LTBCR), Department of Oncology, KU Leuven, Leuven, Belgium
| | | | - A Smeets
- Surgical Oncology, UZ Leuven, Leuven, Belgium
| | - K Punie
- General Medical Oncology, UZ Leuven, Leuven, Belgium
| | - L Voorwerk
- Departments of Medical Oncology, The Netherlands Cancer Institute, Amsterdam, The Netherlands; Tumour Biology and Immunology, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - H Wildiers
- General Medical Oncology, UZ Leuven, Leuven, Belgium
| | - G Floris
- Pathology, UZ Leuven, Leuven, Belgium
| | | | - P W B Derksen
- Department of Pathology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - P Neven
- Departments of Gynaecology and Obstetrics, UZ Leuven, Leuven, Belgium
| | - E Senkus
- Department of Oncology and Radiotherapy, Medical University of Gdańsk, Gdańsk, Poland
| | - E Sawyer
- School of Cancer and Pharmaceutical Sciences, Faculty of Life Sciences and Medicine, Guy's Cancer Centre, King's College London, London, UK
| | - M Kok
- Departments of Medical Oncology, The Netherlands Cancer Institute, Amsterdam, The Netherlands; Tumour Biology and Immunology, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - C Desmedt
- Laboratory for Translational Breast Cancer Research (LTBCR), Department of Oncology, KU Leuven, Leuven, Belgium.
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16
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Biomarker profile of invasive lobular carcinoma: pleomorphic versus classic subtypes, clinicopathological characteristics and prognosis analyses. Breast Cancer Res Treat 2022; 194:279-295. [PMID: 35666367 DOI: 10.1007/s10549-022-06627-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 05/03/2022] [Indexed: 02/05/2023]
Abstract
PURPOSE To compare the clinicopathologic features and prognosis of pleomorphic invasive lobular carcinoma (P-ILC) and classic ILC (C-ILC) according to the biomarker profile. METHODS A total of 667 C-ILCs and 133 P-ILCs between 2011 and 2021 were included. Clinicopathologic features and stromal tumor-infiltrating lymphocytes (sTILs) status were evaluated. P-ILCs were divided into subtypes based on ER/PR and HER2 expression. The overall survival and disease-free survival (DFS) of patients were compared among matched P-ILCs, C-ILCs, and invasive ductal carcinomas (IDCs) with biomarker subtypes. RESULTS Compared to C-ILCs, P-ILCs had greater tumor sizes and stages, fewer ER-positive, more HER2-positive, triple negative (TN), and Ki-67 > 20% tumors (P < 0.05). P-ILCs were subdivided into ER+ (63.1%), HER2+ (21.1%) and TN (15.8%). ER+ P-ILCs were mainly showed trabecular and solid growth patterns. Apocrine and solid features were more strongly associated with HER2+ P-ILCs and TN-P-ILCs, respectively. The prognosis of each biomarker group (ER+, HER2+ and TN) differed by subtype. The P-ILC biomarker subtypes had worse prognosis than the same subtypes in the IDC group, while there was no difference between the P-ILC and the C-ILC counterparts. Solid variants of P-ILC had the worst prognosis. Bone was the most common metastatic site in ER+ P-ILCs and TN-P-ILCs. HER2+ P-ILCs tended to metastasize to the brain and liver. DFS of HER2+ P-ILCs and TN-P-ILCs were worse than that of ER+ P-ILCs. Lacking lobular carcinoma in situ and sTILs ≤ 10% were associated with worse survival of ER+ P-ILCs and TN-P-ILCs, respectively. For HER2+ P-ILCs, Ki-67 > 20% and sTILs ≤ 10% were significant factors for lower DFS. CONCLUSION P-ILCs is an aggressive subtype of ILCs. Analyzing the prognostic factors of P-ILCs with heterogeneous morphological and biomarker characteristics is helpful for creating an individualized treatment.
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17
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Mouabbi JA, Hassan A, Lim B, Hortobagyi GN, Tripathy D, Layman RM. Invasive lobular carcinoma: an understudied emergent subtype of breast cancer. Breast Cancer Res Treat 2022; 193:253-264. [DOI: 10.1007/s10549-022-06572-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Accepted: 03/07/2022] [Indexed: 12/22/2022]
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18
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Dalenc F, Lusque A, De La Motte Rouge T, Pistilli B, Brain E, Pasquier D, Debled M, Thery JC, Gonçalves A, Desmoulins I, Levy C, Uwer L, Ferrero JM, Eymard JC, Mouret-Reynier MA, Patsouris A, Frenel JS, Petit T, Chevrot M, Bachelot T, Guiu S. Impact of lobular versus ductal histology on overall survival in metastatic breast cancer: a French retrospective multicentre cohort study. Eur J Cancer 2022; 164:70-79. [PMID: 35176614 DOI: 10.1016/j.ejca.2021.12.031] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 12/22/2021] [Accepted: 12/27/2021] [Indexed: 12/20/2022]
Abstract
BACKGROUND The impact of the histological lobular subtype on overall survival (OS) in metastatic breast cancer (MBC) is still under debate, with very few data available. PATIENTS AND METHODS Using the French national multicentre Epidemiological Strategy and Medico Economics [ESME]) data platform, the primary objective was to compare the OS of patients with invasive lobular carcinoma (ILC) versus invasive ductal carcinoma (IDC) MBC, with adjustment on the main prognostic factors using two approaches: multivariable analysis and matching with a propensity score. Secondary objectives were to compare first-line progression-free survival (PFS1) and describe patients and tumour characteristics. RESULTS Of the 16,703 patients with MBC in the ESME database, 13,111 met all inclusion criteria for the present analysis. One-thousand eight-hundred and four (13.8%) patients had ILC and 11.307 (86.2%) IDC. In the multivariable analysis, patients with ILC had a worse OS [hazard ratio (HR): 1.31; 95%CI 1.20-1.42; p < 0.0001] and a worse PFS1 (HR: 1.15; 95%CI 1.07-1.22; p < 0.0001) as compared with those with IDC, independently of hormone receptor and HER2 status. Interestingly, OS was better (HR 0.79; 95% confidence interval [CI] 0.64-0.98; p = 0.0302), worse (HR: 1.17; 95%CI 1.08-1.27; p = 0.0001) or similar (HR: 0.88; 95%CI 0.67-1.15; p = 0.3455) in patients with ILC with triple-negative, hormone receptor-positive/HER2-negative and HER2-positive MBC, respectively, compared with patients with IDC. CONCLUSION Lobular histology is an independent adverse prognostic factor among women with MBC. ILC MBC could be considered a specific entity. Dedicated prospective studies are needed to tailor the management of these patients.
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Affiliation(s)
- Florence Dalenc
- Department of Medical Oncology, Institut Claudius Regaud-IUCT Oncopole, Toulouse, France
| | - Amélie Lusque
- Department of Biostatistics, Institut Claudius Regaud-IUCT Oncopole, Toulouse, France
| | | | - Barbara Pistilli
- Department of Cancer Medicine, Gustave Roussy, Villejuif, France
| | - Etienne Brain
- Department of Medical Oncology, Saint-Cloud and Paris, France
| | - David Pasquier
- Department of Radiation Oncology, Centre Oscar Lambret, Lille, France
| | - Marc Debled
- Department of Medical Oncology, Institut Bergonie, Bordeaux, France
| | | | - Anthony Gonçalves
- Department of Medical Oncology, Institut Paoli-Calmettes, Marseille, France
| | - Isabelle Desmoulins
- Department of Medical Oncology, Centre Georges François Leclerc, Dijon, France
| | - Christelle Levy
- Department of Medical Oncology, Centre François Baclesse, Caen, France
| | - Lionel Uwer
- Department of Medical Oncology, Institut de Cancérologie de Lorraine, Vandœuvre-lès-Nancy, France
| | - Jean-Marc Ferrero
- Department of Medical Oncology, Centre Antoine Lacassagne, Nice, France
| | | | | | - Anne Patsouris
- Department of MedicalOncology, Institut de Cancérologie de L'Ouest-Paul Papin, Angers, France
| | - Jean-Sébastien Frenel
- Department of MedicalOncology, Institut de Cancérologie de L'Ouest-René Gauducheau, Nantes, France
| | - Thierry Petit
- Department of Medical Oncology, Centre Paul Strauss, Strasbourg, France
| | - Michael Chevrot
- Department of Real Worl Data, Data Unit, Unicancer, Paris, France
| | - Thomas Bachelot
- Department of Medical Oncology, Centre Léon Bérard, Lyon, France
| | - Séverine Guiu
- Department of Medical Oncology, Institut Du Cancer de Montpellier, Montpellier, France.
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19
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Vachenc S, Gobbo J, Moujarrebe SE, Desmoulins I, Gilabert M, Beau-Faller M, Mitry E, Girard N, Bertaut A, Dusetti N, Iovanna JL, Yousfi R, Pierrat F, Bruno R, Cueff A, Boidot R, Genne P. OncoSNIPE® Study Protocol, a study of molecular profiles associated with development of resistance in solid cancer patients. BMC Cancer 2022; 22:41. [PMID: 34991520 PMCID: PMC8734369 DOI: 10.1186/s12885-021-09134-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Accepted: 12/21/2021] [Indexed: 11/25/2022] Open
Abstract
Background Nowadays, evaluation of the efficacy and the duration of treatment, in context of monitoring patients with solid tumors, is based on the RECIST methodology. With these criteria, resistance and/or insensitivity are defined as tumor non-response which does not allow a good understanding of the diversity of the underlying mechanisms. The main objective of the OncoSNIPE® collaborative clinical research program is to identify early and late markers of resistance to treatment. Methods Multicentric, interventional study with the primary objective to identify early and / or late markers of resistance to treatment, in 600 adult patients with locally advanced or metastatic triple negative or Luminal B breast cancer, non-small-cell lung cancer or pancreatic ductal adenocarcinoma. Patients targeted in this study have all rapid progression of their pathology, making it possible to obtain models for evaluating markers of early and / or late responses over the 2-year period of follow-up, and thus provide the information necessary to understand resistance mechanisms. To explore the phenomena of resistance, during therapeutic response and / or progression of the pathology, we will use a multidisciplinary approach including high-throughput sequencing (Exome-seq and RNAseq), clinical data, medical images and immunological profile by ELISA. Patients will have long-term follow-up with different biological samples, at baseline (blood and biopsy) and at each tumoral evaluation or tumoral progression evaluated by medical imaging. Clinical data will be collected through a dedicated Case Report Form (CRF) and enriched by semantic extraction based on the French ConSoRe (Continuum Soins Recherche) initiative, a dedicated Semantic Clinical Data Warehouse (SCDW) to cancer. The study is sponsored by Oncodesign (Dijon, France) and is currently ongoing. Discussion The great diversity of intrinsic or acquired molecular mechanisms involved in resistance to treatment constitutes a real therapeutic issue. Improving understanding of mechanisms of resistance of cancer cells to anti-tumor treatments is therefore a major challenge. The OncoSNIPE cohort will lead to a better understanding of the mechanisms of resistance and will allow to explore new mechanisms of actions and to discover new therapeutic targets or strategies making it possible to circumvent the escape in different types of cancer. Trial registration Clinicaltrial.gov. Registered 16 September 2020, https://clinicaltrials.gov/ct2/show/NCT04548960?term=oncosnipe&draw=2&rank=1 and ANSM ID RCB 2017-A02018-45.
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Affiliation(s)
| | - Jessica Gobbo
- Centre Georges-François Leclerc, 1 rue Professeur Marion, 21079, Dijon Cedex, France. .,Inserm 1231, 8 Boulevard Jeanne d'ARC, 21000, Dijon, France.
| | | | - Isabelle Desmoulins
- Centre Georges-François Leclerc, 1 rue Professeur Marion, 21079, Dijon Cedex, France
| | - Marine Gilabert
- Institut Paoli-Calmettes, 232 Bd de Sainte Marguerite, 13009, Marseille, France
| | - Michelle Beau-Faller
- Hôpitaux Universitaires de Strasbourg, Avenue Molière, 67000, Strasbourg, France
| | - Emmanuel Mitry
- Institut Paoli-Calmettes, 232 Bd de Sainte Marguerite, 13009, Marseille, France
| | | | - Aurélie Bertaut
- Centre Georges-François Leclerc, 1 rue Professeur Marion, 21079, Dijon Cedex, France
| | - Nelson Dusetti
- Cancer Research Center of Marseille, CRCM, Inserm, CNRS, Paoli-Calmettes Institut, Aix-Marseille University, Marseille, France
| | - Juan L Iovanna
- Institut Paoli-Calmettes, 232 Bd de Sainte Marguerite, 13009, Marseille, France.,Cancer Research Center of Marseille, CRCM, Inserm, CNRS, Paoli-Calmettes Institut, Aix-Marseille University, Marseille, France
| | - Rahima Yousfi
- Oncodesign SA, 18-20 rue Jean Mazen, 21079, Dijon Cedex, France
| | - Fabien Pierrat
- Acobiom SAS, 1682 rue de la Valsière Cap Delta Biopôle Euromédecine II, 34790, Grables, France
| | - Roman Bruno
- Acobiom SAS, 1682 rue de la Valsière Cap Delta Biopôle Euromédecine II, 34790, Grables, France
| | - Adèle Cueff
- Centre Georges-François Leclerc, 1 rue Professeur Marion, 21079, Dijon Cedex, France
| | - Romain Boidot
- Centre Georges-François Leclerc, 1 rue Professeur Marion, 21079, Dijon Cedex, France
| | - Philippe Genne
- Oncodesign SA, 18-20 rue Jean Mazen, 21079, Dijon Cedex, France
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20
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Sflomos G, Schipper K, Koorman T, Fitzpatrick A, Oesterreich S, Lee AV, Jonkers J, Brunton VG, Christgen M, Isacke C, Derksen PWB, Brisken C. Atlas of Lobular Breast Cancer Models: Challenges and Strategic Directions. Cancers (Basel) 2021; 13:5396. [PMID: 34771558 PMCID: PMC8582475 DOI: 10.3390/cancers13215396] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Revised: 10/18/2021] [Accepted: 10/21/2021] [Indexed: 12/14/2022] Open
Abstract
Invasive lobular carcinoma (ILC) accounts for up to 15% of all breast cancer (BC) cases and responds well to endocrine treatment when estrogen receptor α-positive (ER+) yet differs in many biological aspects from other ER+ BC subtypes. Up to 30% of patients with ILC will develop late-onset metastatic disease up to ten years after initial tumor diagnosis and may experience failure of systemic therapy. Unfortunately, preclinical models to study ILC progression and predict the efficacy of novel therapeutics are scarce. Here, we review the current advances in ILC modeling, including cell lines and organotypic models, genetically engineered mouse models, and patient-derived xenografts. We also underscore four critical challenges that can be addressed using ILC models: drug resistance, lobular tumor microenvironment, tumor dormancy, and metastasis. Finally, we highlight the advantages of shared experimental ILC resources and provide essential considerations from the perspective of the European Lobular Breast Cancer Consortium (ELBCC), which is devoted to better understanding and translating the molecular cues that underpin ILC to clinical diagnosis and intervention. This review will guide investigators who are considering the implementation of ILC models in their research programs.
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Affiliation(s)
- George Sflomos
- ISREC—Swiss Institute for Experimental Cancer Research, School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Koen Schipper
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London SW3 6JB, UK; (K.S.); (A.F.); (C.I.)
| | - Thijs Koorman
- Department of Pathology, University Medical Center Utrecht, Heidelberglaan 100, 3584 CX Utrecht, The Netherlands; (T.K.); (P.W.B.D.)
| | - Amanda Fitzpatrick
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London SW3 6JB, UK; (K.S.); (A.F.); (C.I.)
| | - Steffi Oesterreich
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, PA 15261, USA; (S.O.); (A.V.L.)
- Magee Women’s Cancer Research Institute, Pittsburgh, PA 15213, USA
- Cancer Biology Program, Women’s Cancer Research Center, UPMC Hillman Cancer Center, Pittsburgh, PA 15232, USA
| | - Adrian V. Lee
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, PA 15261, USA; (S.O.); (A.V.L.)
- Magee Women’s Cancer Research Institute, Pittsburgh, PA 15213, USA
- Cancer Biology Program, Women’s Cancer Research Center, UPMC Hillman Cancer Center, Pittsburgh, PA 15232, USA
| | - Jos Jonkers
- Division of Molecular Pathology, The Netherlands Cancer Institute, 1066 CX Amsterdam, The Netherlands;
- Oncode Institute, 1066 CX Amsterdam, The Netherlands
| | - Valerie G. Brunton
- Edinburgh Cancer Research UK Centre, Institute of Genetics and Cancer, University of Edinburgh, Crewe Road South, Edinburgh EH4 2XU, UK;
| | - Matthias Christgen
- Institute of Pathology, Hannover Medical School, Carl-Neuberg-Straße 1, 30625 Hannover, Germany;
| | - Clare Isacke
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London SW3 6JB, UK; (K.S.); (A.F.); (C.I.)
| | - Patrick W. B. Derksen
- Department of Pathology, University Medical Center Utrecht, Heidelberglaan 100, 3584 CX Utrecht, The Netherlands; (T.K.); (P.W.B.D.)
| | - Cathrin Brisken
- ISREC—Swiss Institute for Experimental Cancer Research, School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London SW3 6JB, UK; (K.S.); (A.F.); (C.I.)
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21
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Lobular Breast Cancer: Histomorphology and Different Concepts of a Special Spectrum of Tumors. Cancers (Basel) 2021; 13:cancers13153695. [PMID: 34359596 PMCID: PMC8345067 DOI: 10.3390/cancers13153695] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 07/15/2021] [Accepted: 07/18/2021] [Indexed: 12/20/2022] Open
Abstract
Simple Summary Invasive lobular breast cancer (ILC) is a special type of breast cancer (BC) that was first described in 1941. The diagnosis of ILC is made by microscopy of tumor specimens, which reveals a distinct morphology. This review recapitulates the developments in the microscopic assessment of ILC from 1941 until today. We discuss different concepts of ILC, provide an overview on ILC variants, and highlight advances which have contributed to a better understanding of ILC as a special histologic spectrum of tumors. Abstract Invasive lobular breast cancer (ILC) is the most common special histological type of breast cancer (BC). This review recapitulates developments in the histomorphologic assessment of ILC from its beginnings with the seminal work of Foote and Stewart, which was published in 1941, until today. We discuss different concepts of ILC and their implications. These concepts include (i) BC arising from mammary lobules, (ii) BC growing in dissociated cells and single files, and (iii) BC defined as a morpho-molecular spectrum of tumors with distinct histological and molecular characteristics related to impaired cell adhesion. This review also provides a comprehensive overview of ILC variants, their histomorphology, and differential diagnosis. Furthermore, this review highlights recent advances which have contributed to a better understanding of the histomorphology of ILC, such as the role of the basal lamina component laminin, the molecular specificities of triple-negative ILC, and E-cadherin to P-cadherin expression switching as the molecular determinant of tubular elements in CDH1-deficient ILC. Last but not least, we provide a detailed account of the tumor microenvironment in ILC, including tumor infiltrating lymphocyte (TIL) levels, which are comparatively low in ILC compared to other BCs, but correlate with clinical outcome. The distinct histomorphology of ILC clearly reflects a special tumor biology. In the clinic, special treatment strategies have been established for triple-negative, HER2-positive, and ER-positive BC. Treatment specialization for patients diagnosed with ILC is just in its beginnings. Accordingly, ILC deserves greater attention as a special tumor entity in BC diagnostics, patient care, and cancer research.
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22
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The Genomic Landscape of Lobular Breast Cancer. Cancers (Basel) 2021; 13:cancers13081950. [PMID: 33919581 PMCID: PMC8073944 DOI: 10.3390/cancers13081950] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 04/12/2021] [Accepted: 04/13/2021] [Indexed: 12/12/2022] Open
Abstract
Invasive lobular carcinoma (ILC) is the second most common breast cancer histologic subtype, accounting for approximately 15% of all breast cancers. It is only recently that its unique biology has been assessed in high resolution. Here, we present a meta-analysis of ILC sequencing datasets, to provide a long-awaited ILC-specific resource, and to confirm the prognostic value and strength of association between a number of clinico-pathology features and genomics in this special tumour type. We consider panel (n = 684), whole exome (n = 215) and whole genome sequencing data (n = 48), and review histology of The Cancer Genome Atlas cases to assign grades and determine whether the ILC is of classic type or a variant, such as pleomorphic, prior to performing statistical analyses. We demonstrate evidence of considerable genomic heterogeneity underlying a broadly homogeneous tumour type (typically grade 2, estrogen receptor (ER)-positive); with genomes exhibiting few somatic mutations or structural alterations, genomes with a hypermutator phenotype, and tumours with highly rearranged genomes. We show that while CDH1 (E-cadherin) and PIK3CA mutations do not significantly impact survival, overall survival is significantly poorer for patients with a higher tumour mutation burden; this is also true for grade 3 tumours, and those carrying a somatic TP53 mutation (and these cases were more likely to be ER-negative). Taken together, we have compiled a meta-dataset of ILC with molecular profiling, and our analyses show that the genomic landscape significantly impacts the tumour's variable natural history and overall survival of ILC patients.
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