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Tarantino P, Gupta H, Hughes ME, Files J, Strauss S, Kirkner G, Feeney AM, Li Y, Garrido-Castro AC, Barroso-Sousa R, Bychkovsky BL, DiLascio S, Sholl L, MacConaill L, Lindeman N, Johnson BE, Meyerson M, Jeselsohn R, Qiu X, Li R, Long H, Winer EP, Dillon D, Curigliano G, Cherniack AD, Tolaney SM, Lin NU. Author Correction: Comprehensive genomic characterization of HER2-low and HER2-0 breast cancer. Nat Commun 2023; 14:8321. [PMID: 38097580 PMCID: PMC10721787 DOI: 10.1038/s41467-023-44124-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2023] Open
Affiliation(s)
- Paolo Tarantino
- Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA.
- Breast Oncology Program, Dana-Farber Brigham Cancer Center, Boston, MA, USA.
- Harvard Medical School, Boston, MA, USA.
- Department of Oncology and Hematology-Oncology, University of Milano, Milano, Italy.
| | - Hersh Gupta
- Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
- Broad Institute of Harvard and MIT, Cambridge, MA, USA
| | | | - Janet Files
- Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Sarah Strauss
- Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Gregory Kirkner
- Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | | | - Yvonne Li
- Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Ana C Garrido-Castro
- Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
- Breast Oncology Program, Dana-Farber Brigham Cancer Center, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
| | - Romualdo Barroso-Sousa
- Dasa Institute for Education and Research (IEPD), Brasilia, Brazil
- Dasa Oncology/Hospital Brasilia, Brasilia, Brazil
| | - Brittany L Bychkovsky
- Breast Oncology Program, Dana-Farber Brigham Cancer Center, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
- Division of Cancer Genetics and Prevention, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Simona DiLascio
- Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Lynette Sholl
- Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | | | - Neal Lindeman
- Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
- Department of Pathology, Weill Cornell Medicine, New York, NY, USA
| | - Bruce E Johnson
- Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Matthew Meyerson
- Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
- Broad Institute of Harvard and MIT, Cambridge, MA, USA
| | - Rinath Jeselsohn
- Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
- Breast Oncology Program, Dana-Farber Brigham Cancer Center, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
| | - Xintao Qiu
- Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Rong Li
- Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Henry Long
- Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Eric P Winer
- Yale Cancer Center, Yale School of Medicine, Smilow Cancer Hospital, New Haven, CT, USA
| | - Deborah Dillon
- Harvard Medical School, Boston, MA, USA
- Department of Pathology, Brigham and Women's Hospital, Boston, MA, USA
| | - Giuseppe Curigliano
- Division of Early Drug Development, European Institute of Oncology IRCCS, Milano, Italy
| | - Andrew D Cherniack
- Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
- Broad Institute of Harvard and MIT, Cambridge, MA, USA
| | - Sara M Tolaney
- Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
- Breast Oncology Program, Dana-Farber Brigham Cancer Center, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
| | - Nancy U Lin
- Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
- Breast Oncology Program, Dana-Farber Brigham Cancer Center, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
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2
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Nishida J, Cristea S, Bodapati S, Puleo J, Bai G, Patel A, Hughes M, Snow C, Borges V, Ruddy KJ, Collins LC, Feeney AM, Slowik K, Bossuyt V, Dillon D, Lin NU, Partridge AH, Michor F, Polyak K. Peripheral blood TCR clonotype diversity as an age-associated marker of breast cancer progression. Proc Natl Acad Sci U S A 2023; 120:e2316763120. [PMID: 38011567 DOI: 10.1073/pnas.2316763120] [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: 09/26/2023] [Accepted: 10/27/2023] [Indexed: 11/29/2023] Open
Abstract
Immune escape is a prerequisite for tumor growth. We previously described a decline in intratumor activated cytotoxic T cells and T cell receptor (TCR) clonotype diversity in invasive breast carcinomas compared to ductal carcinoma in situ (DCIS), implying a central role of decreasing T cell responses in tumor progression. To determine potential associations between peripheral immunity and breast tumor progression, here, we assessed the peripheral blood TCR clonotype of 485 breast cancer patients diagnosed with either DCIS or de novo stage IV disease at younger (<45) or older (≥45) age. TCR clonotype diversity was significantly lower in older compared to younger breast cancer patients regardless of tumor stage at diagnosis. In the younger age group, TCR-α clonotype diversity was lower in patients diagnosed with de novo stage IV breast cancer compared to those diagnosed with DCIS. In the older age group, DCIS patients with higher TCR-α clonotype diversity were more likely to have a recurrence compared to those with lower diversity. Whole blood transcriptome profiles were distinct depending on the TCR-α Chao1 diversity score. There were more CD8+ T cells and a more active immune environment in DCIS tumors of young patients with higher peripheral blood TCR-α Chao1 diversity than in those with lower diversity. These results provide insights into the role that host immunity plays in breast cancer development across different age groups.
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MESH Headings
- Humans
- Aged
- Female
- Breast Neoplasms/pathology
- Carcinoma, Intraductal, Noninfiltrating/genetics
- Carcinoma, Intraductal, Noninfiltrating/pathology
- CD8-Positive T-Lymphocytes/pathology
- Biomarkers, Tumor/genetics
- Receptors, Antigen, T-Cell/genetics
- Neoplastic Processes
- Receptors, Antigen, T-Cell, alpha-beta/genetics
- Carcinoma, Ductal, Breast/pathology
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Affiliation(s)
- Jun Nishida
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02215
- Department of Medicine, Brigham and Women's Hospital, Boston, MA 02115
- Department of Medicine, Harvard Medical School, Boston, MA 02115
| | - Simona Cristea
- Department of Data Science, Dana-Farber Cancer Institute, Boston, MA 02215
- Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, MA 02138
- Department of Biostatistics, Harvard T. H. Chan School of Public Health, Boston, MA 02115
| | - Sudheshna Bodapati
- Department of Data Science, Dana-Farber Cancer Institute, Boston, MA 02215
| | - Julieann Puleo
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02215
- Department of Medicine, Brigham and Women's Hospital, Boston, MA 02115
- Department of Medicine, Harvard Medical School, Boston, MA 02115
| | - Gali Bai
- Department of Data Science, Dana-Farber Cancer Institute, Boston, MA 02215
- Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, MA 02138
- Department of Biostatistics, Harvard T. H. Chan School of Public Health, Boston, MA 02115
| | - Ashka Patel
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02215
- Department of Medicine, Brigham and Women's Hospital, Boston, MA 02115
| | - Melissa Hughes
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02215
- Department of Medicine, Brigham and Women's Hospital, Boston, MA 02115
| | - Craig Snow
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02215
- Department of Medicine, Brigham and Women's Hospital, Boston, MA 02115
| | - Virginia Borges
- Medicine-Medical Oncology, University of Colorado Comprehensive Cancer Center, Aurora, CO 80045
| | - Kathryn J Ruddy
- Division of Medical Oncology, Department of Oncology, Mayo Clinic, Rochester, MN 55905
| | - Laura C Collins
- Department of Pathology, Beth Israel Deaconess Medical Center, Boston, MA 02115
| | - Anne-Marie Feeney
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02215
- Department of Medicine, Brigham and Women's Hospital, Boston, MA 02115
| | - Kara Slowik
- The Broad Institute of MIT and Harvard, Cambridge, MA 02138
| | - Veerle Bossuyt
- Mass General Pathology, Massachusetts General Hospital, Boston, MA 02114
| | - Deborah Dillon
- Department of Pathology, Brigham and Women's Hospital, Boston, MA 02115
| | - Nancy U Lin
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02215
- Department of Medicine, Brigham and Women's Hospital, Boston, MA 02115
- Department of Medicine, Harvard Medical School, Boston, MA 02115
| | - Ann H Partridge
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02215
- Department of Medicine, Brigham and Women's Hospital, Boston, MA 02115
- Department of Medicine, Harvard Medical School, Boston, MA 02115
| | - Franziska Michor
- Department of Data Science, Dana-Farber Cancer Institute, Boston, MA 02215
- Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, MA 02138
- Department of Biostatistics, Harvard T. H. Chan School of Public Health, Boston, MA 02115
- The Broad Institute of MIT and Harvard, Cambridge, MA 02138
- The Ludwig Center at Harvard, Boston, MA 02115
- Center for Cancer Evolution, Dana-Farber Cancer Institute, Boston, MA 02215
| | - Kornelia Polyak
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02215
- Department of Medicine, Brigham and Women's Hospital, Boston, MA 02115
- Department of Medicine, Harvard Medical School, Boston, MA 02115
- Mass General Pathology, Massachusetts General Hospital, Boston, MA 02114
- The Ludwig Center at Harvard, Boston, MA 02115
- Center for Cancer Evolution, Dana-Farber Cancer Institute, Boston, MA 02215
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3
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Tarantino P, Gupta H, Hughes ME, Files J, Strauss S, Kirkner G, Feeney AM, Li Y, Garrido-Castro AC, Barroso-Sousa R, Bychkovsky BL, DiLascio S, Sholl L, MacConaill L, Lindeman N, Johnson BE, Meyerson M, Jeselsohn R, Qiu X, Li R, Long H, Winer EP, Dillon D, Curigliano G, Cherniack AD, Tolaney SM, Lin NU. Comprehensive genomic characterization of HER2-low and HER2-0 breast cancer. Nat Commun 2023; 14:7496. [PMID: 37980405 PMCID: PMC10657399 DOI: 10.1038/s41467-023-43324-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [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: 04/19/2023] [Accepted: 11/07/2023] [Indexed: 11/20/2023] Open
Abstract
The molecular underpinnings of HER2-low and HER2-0 (IHC 0) breast tumors remain poorly defined. Using genomic findings from 1039 patients with HER2-negative metastatic breast cancer undergoing next-generation sequencing from 7/2013-12/2020, we compare results between HER2-low (n = 487, 47%) and HER2-0 tumors (n = 552, 53%). A significantly higher number of ERBB2 alleles (median copy count: 2.05) are observed among HER2-low tumors compared to HER2-0 (median copy count: 1.79; P = 2.36e-6), with HER2-0 tumors harboring a higher rate of ERBB2 hemideletions (31.1% vs. 14.5%). No other genomic alteration reaches significance after accounting for multiple hypothesis testing, and no significant differences in tumor mutational burden are observed between HER2-low and HER2-0 tumors (median: 7.26 mutations/megabase vs. 7.60 mutations/megabase, p = 0.24). Here, we show that the genomic landscape of HER2-low and HER2-0 tumors does not differ significantly, apart from a higher ERBB2 copy count among HER2-low tumors, and a higher rate of ERBB2 hemideletions in HER2-0 tumors.
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Affiliation(s)
- Paolo Tarantino
- Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA.
- Breast Oncology Program, Dana-Farber Brigham Cancer Center, Boston, MA, USA.
- Harvard Medical School, Boston, MA, USA.
- Department of Oncology and Hematology-Oncology, University of Milano, Milano, Italy.
| | - Hersh Gupta
- Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
- Broad Institute of Harvard and MIT, Cambridge, MA, USA
| | | | - Janet Files
- Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Sarah Strauss
- Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Gregory Kirkner
- Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | | | - Yvonne Li
- Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Ana C Garrido-Castro
- Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
- Breast Oncology Program, Dana-Farber Brigham Cancer Center, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
| | - Romualdo Barroso-Sousa
- Dasa Institute for Education and Research (IEPD), Brasilia, Brazil
- Dasa Oncology/Hospital Brasilia, Brasilia, Brazil
| | - Brittany L Bychkovsky
- Breast Oncology Program, Dana-Farber Brigham Cancer Center, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
- Division of Cancer Genetics and Prevention, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Simona DiLascio
- Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Lynette Sholl
- Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | | | - Neal Lindeman
- Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
- Department of Pathology, Weill Cornell Medicine, New York, NY, USA
| | - Bruce E Johnson
- Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Matthew Meyerson
- Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
- Broad Institute of Harvard and MIT, Cambridge, MA, USA
| | - Rinath Jeselsohn
- Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
- Breast Oncology Program, Dana-Farber Brigham Cancer Center, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
| | - Xintao Qiu
- Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Rong Li
- Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Henry Long
- Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Eric P Winer
- Yale Cancer Center, Yale School of Medicine, Smilow Cancer Hospital, New Haven, CT, USA
| | - Deborah Dillon
- Harvard Medical School, Boston, MA, USA
- Department of Pathology, Brigham and Women's Hospital, Boston, MA, USA
| | - Giuseppe Curigliano
- Division of Early Drug Development, European Institute of Oncology IRCCS, Milano, Italy
| | - Andrew D Cherniack
- Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
- Broad Institute of Harvard and MIT, Cambridge, MA, USA
| | - Sara M Tolaney
- Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
- Breast Oncology Program, Dana-Farber Brigham Cancer Center, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
| | - Nancy U Lin
- Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
- Breast Oncology Program, Dana-Farber Brigham Cancer Center, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
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4
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Kabraji S, Li YY, Hughes ME, Gupta HV, Buckley L, Files JL, Mohammed-Abreu A, Feeney AM, Kirkner G, Patel A, Garrido-Castro AC, Barroso-Sousa R, Bychkovsky B, Meyerson M, Tolaney S, Dillon DA, Johnson B, Winer E, Cherniack A, Lin NU. Abstract PD7-07: Somatic alterations in primary tumors of patients (pts) with metastatic breast cancer (MBC) may predict likelihood of brain metastasis. Cancer Res 2023. [DOI: 10.1158/1538-7445.sabcs22-pd7-07] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
Abstract
Abstract
Background: Despite advances in treatment options, outcomes remain poor for many pts with breast cancer brain metastases (BCBMs). Identifying genomic predictors of brain metastasis from primary tumors could lead to better stratification of pts at risk and drive the development of preventative strategies. The objective of this study was to describe the landscape of genomic alterations in primary tumors from pts with MBC who subsequently did or did not develop BCBMs.
Methods: We performed a case control study to identify somatic alterations in primary tumors associated with a higher incidence of brain metastases. We reviewed outcomes for 2562 unique MBC patients from a single institution who underwent targeted next-generation DNA sequencing of > 280 cancer-related genes (OncoPanel) from their tumor between July 1, 2013 and December 31, 2020. Pts were included in this analysis if they had at least 2 years of follow-up from date of metastatic diagnosis and OncoPanel testing on a primary breast tumor. We compared single nucleotide variants (oncogenic or likely oncogenic), copy number variation (amplification and deep deletions) and tumor mutation burden in the primary tumors of pts in this cohort. Copy number variation was corrected for Panel version and tumor purity. Wilcoxon rank sum test and Fisher exact test was used to compare genomic differences between groups. False discovery rate was used to correct for multiple hypothesis testing and q < 0.1 was considered significant
Results: A total of 369 pts were included in the final analytic cohort. Of these, 115 were diagnosed with brain mets (cases, BM group) and 224 were not (controls, nBM group). The BM group was enriched for patients with HER2-positive breast cancer (33 vs 12.5%), consistent with previous work. In the whole cohort, the most common and clinically significant somatic alterations (oncogenic single nucleotide variants or copy number high amplification or two copy deletion) are shown in Table 1. When adjusting for subtype there were no significantly enriched SNVs in BM vs nBM group. When adjusting for subtype, FGFR1 amplification was significantly enriched in hormone receptor positive HER2 negative (HR+ HER2-) patients with BM (log2 odds ratio 1.22, q < 0.1). Tumor mutation burden was not significantly different in primary tumors between the BM and nBM groups (median TMB 7.3 vs 6.1, Wilcoxon p = 0.08).
Pathway analysis combining all subtypes revealed that RTK_RAS pathway (log2 odds ratio 1.64, q value < 0.1) and TP53 pathway (log2 odds ratio 1.15, q value < 0.1) gene sets were significantly enriched in the BM group. When controlling for subtype, pathway analysis revealed that RTK_RAS pathway gene set was significantly enriched in HR+ HER2- BM group (log2 odds ratio 1.36 q < 0.1).
Conclusions: In this case control series of patients with metastatic breast cancer with or without brain metastases, we found that primary tumors that are enriched for somatic alterations in the RTK_RAS and TP53 pathway may be associated with higher risk of developing brain metastases. Further validation in larger cohorts is warranted.
Table 1. Frequency of somatic alterations in primary tumor by brain metastasis outcome.
Citation Format: Sheheryar Kabraji, Yvonne Y. Li, Melissa E. Hughes, Hersh V. Gupta, Lauren Buckley, Janet L. Files, Ayesha Mohammed-Abreu, Anne-Marie Feeney, Greg Kirkner, Ashka Patel, Ana C. Garrido-Castro, Romualdo Barroso-Sousa, Brittany Bychkovsky, Matthew Meyerson, Sara Tolaney, Deborah A. Dillon, Bruce Johnson, Eric Winer, Andrew Cherniack, Nancy U. Lin. Somatic alterations in primary tumors of patients (pts) with metastatic breast cancer (MBC) may predict likelihood of brain metastasis [abstract]. In: Proceedings of the 2022 San Antonio Breast Cancer Symposium; 2022 Dec 6-10; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2023;83(5 Suppl):Abstract nr PD7-07.
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Affiliation(s)
| | | | | | - Hersh V. Gupta
- 4Albert Einstein College of Medicine MSTP (previously: Medical Oncology, Dana-Farber Cancer Institute)
| | | | - Janet L. Files
- 6Medical Oncology, Dana-Farber Cancer Institute, Hull, Massachusetts
| | | | | | | | - Ashka Patel
- 10Department of Pathology, Brigham and Women’s Hospital
| | | | | | - Brittany Bychkovsky
- 13Comprehensive Breast Health Center, Brigham and Women’s Hospital; Breast Oncology Program, Dana-Farber Brigham Cancer Center Division of Cancer Genetics and Prevention; Dana-Farber Cancer Institute; Harvard Medical School
| | - Matthew Meyerson
- 14Medical Oncology, Dana-Farber Cancer Institute; Center for Cancer Genomics, Dana-Farber Cancer Institute; Harvard Medical School; Broad Institute
| | | | - Deborah A. Dillon
- 16Brigham and Women’s Hospital, Breast Oncology Program, Susan F. Smith Center for Women’s Cancers, Dana-Farber Brigham Cancer Center; Harvard Medical School
| | - Bruce Johnson
- 17Medical Oncology, Dana-Farber Cancer Institute; Harvard Medical School
| | | | - Andrew Cherniack
- 19Medical Oncology, Dana-Farber Cancer Institute; Broad Institute
| | - Nancy U. Lin
- 20Dana-Farber Cancer Institute, Boston, Massachusetts
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5
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Tarantino P, Gupta HV, Hughes ME, Files JL, Strauss S, Kirkner G, Feeney AM, Li YY, Garrido-Castro AC, Barroso-Sousa R, Bychkovsky B, MacConaill L, Lindeman N, Johnson B, Meyerson M, Kabraji S, Jeselsohn R, Qiu X, Li R, Long HW, Winer E, Dillon DA, Curigliano G, Cherniack A, Tolaney S, Lin NU. Abstract HER2-05: HER2-05 Comprehensive genomic characterization of HER2-low breast cancer. Cancer Res 2023. [DOI: 10.1158/1538-7445.sabcs22-her2-05] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
Abstract
Abstract
Background: About half of all breast cancers exhibit low HER2 expression. Despite lack of ERBB2 amplification, HER2-low tumors respond to trastuzumab deruxtecan (T-DXd), leading to the NCCN recommendation of T-DXd both for patients with HER2+ and HER2-low metastatic breast cancer (MBC). It remains however unclear if HER2-low represents a distinct molecular entity, as compared to HER2-0 MBC. Here, we compare the genomic landscape of HER2-low versus HER2-0 breast cancers in a large, single institution cohort. Methods: We identified consecutive patients with MBC seen at Dana-Farber Cancer Institute between 07/2013 and 12/2020. Patients were included if they had HER2-negative MBC per ASCO/CAP Guidelines and had undergone next generation sequencing (NGS) testing with a targeted, tumor-only platform (OncoPanel). Based on the HER2 status of the specimen tested by NGS, patients were divided into 2 groups: (i) HER2-low if immunohistochemistry (IHC) 1+ or 2+ non-amplified, or (ii) HER2-0 if IHC 0. Mutations of interest detected on NGS were classified as oncogenic using the OncoKB tool and additional annotation. Genomic profiles of HER2-low and HER2-0 tumors were compared using Chi-Square and Kruskal-Wallis tests. To determine genomic event enrichment between the two HER2 groups, logistic regression models were used, accounting for background rate and estrogen receptor (ER) expression. ERBB2 copy counts were calculated for tumors with recorded histology-estimated purities and copy-number segmentation using a simple model of allelic gain/loss. Results: Among 1847 patients with HER2-negative MBC, 1043 underwent NGS testing on a HER2-low (n=489, 47%) or HER2-0 sample (n=554, 53%). Most samples were metastatic (71%, n=743) while 29% (n=300) were from primary tumors. 73% had ductal histology, 13% were lobular and 14% had mixed or other histology. ER expression was enriched among HER2-low vs. HER2-0 tumors (76% vs. 60%; p< 0.001). Focusing on the most commonly occurring genetic mutations, no major differences were observed in HER2-low vs. HER2-0 tumors, after correcting for ER status (Table 1). Among all mutational events, any mutation in MPL, CYLD, and MAP3K and oncogenic mutations in TP53 and NF1 were more common in HER2-0, while any mutation in MTOR, RAD21, DNMT3A, and PDGFRA were enriched in HER2-low patients, when controlling for ER status and background mutational rate (p< 0.05). However, no mutation reached significance after accounting for multiple hypothesis testing. Similarly, no deep deletion or high amplification CNV events reached significance for either group. Analysis of tumor mutational burden in HER2-low vs. HER-0 tumors revealed no significant differences (median: 7.26 muts/Mb vs. 7.60 muts/Mb, p=1.00), including when accounting for ER status. Finally, among tumors with sufficient tumor purity for ERBB2 copy count analysis (n=374 and 419 for HER2-low and HER2-0, respectively), HER2-low tumors had a significantly higher number of ERBB2 alleles as compared to HER2-0 (< 2 copies, 15.0% vs. 30.9%, 2 copies 67.4% vs. 60.5%, and >2 copies, 17.6% vs. 8.6%; p< 0.001 by Kruskal-Wallis). Conclusions: To our knowledge, this is the largest comprehensive genomic analysis of HER2-low MBC to date. In our cohort of patients with HER2-negative MBC, the genomic landscape of HER2-low and HER2-0 tumors did not differ significantly, apart from a higher number of ERBB2 alleles. These data further support the notion that HER2-low, as currently defined, is not a distinct molecular subtype of breast cancer.
Citation Format: Paolo Tarantino, Hersh V. Gupta, Melissa E. Hughes, Janet L. Files, Sarah Strauss, Gregory Kirkner, Anne-Marie Feeney, Yvonne Y. Li, Ana C. Garrido-Castro, Romualdo Barroso-Sousa, Brittany Bychkovsky, Laura MacConaill, Neal Lindeman, Bruce Johnson, Matthew Meyerson, Sheheryar Kabraji, Rinath Jeselsohn, Xintao Qiu, Rong Li, Henry W. Long, Eric Winer, Deborah A. Dillon, Giuseppe Curigliano, Andrew Cherniack, Sara Tolaney, Nancy U. Lin. HER2-05 Comprehensive genomic characterization of HER2-low breast cancer [abstract]. In: Proceedings of the 2022 San Antonio Breast Cancer Symposium; 2022 Dec 6-10; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2023;83(5 Suppl):Abstract nr HER2-05.
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Affiliation(s)
- Paolo Tarantino
- 1Breast Oncology Program, Dana-Farber Cancer Institute; Harvard Medical School, Boston, Massachusetts
| | - Hersh V. Gupta
- 2Albert Einstein College of Medicine MSTP (previously: Medical Oncology, Dana-Farber Cancer Institute)
| | | | - Janet L. Files
- 4Medical Oncology, Dana-Farber Cancer Institute, Hull, Massachusetts
| | | | | | | | | | | | | | - Brittany Bychkovsky
- 11Comprehensive Breast Health Center, Brigham and Women’s Hospital; Breast Oncology Program, Dana-Farber Brigham Cancer Center Division of Cancer Genetics and Prevention; Dana-Farber Cancer Institute; Harvard Medical School
| | - Laura MacConaill
- 12Dana-Farber Cancer Institute; Harvard Medical School; Broad Institute of Harvard and MIT
| | - Neal Lindeman
- 13Brigham and Women’s Hospital; Harvard Medical School
| | - Bruce Johnson
- 14Medical Oncology, Dana-Farber Cancer Institute; Harvard Medical School
| | - Matthew Meyerson
- 15Medical Oncology, Dana-Farber Cancer Institute; Center for Cancer Genomics, Dana-Farber Cancer Institute; Harvard Medical School; Broad Institute
| | | | | | | | - Rong Li
- 19Dana-Farber Cancer Institute
| | | | | | - Deborah A. Dillon
- 22Brigham and Women’s Hospital, Breast Oncology Program, Susan F. Smith Center for Women’s Cancers, Dana-Farber Brigham Cancer Center; Harvard Medical School
| | | | - Andrew Cherniack
- 24Medical Oncology, Dana-Farber Cancer Institute; Broad Institute
| | | | - Nancy U. Lin
- 26Dana-Farber Cancer Institute, Boston, Massachusetts
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6
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Affiliation(s)
| | - Mohamed Zairi
- Unilever Lecturer in TQM in the Management Centre at the University of Bradford, United Kingdom
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7
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Abstract
This study was undertaken to assess the application of the British Paediatric Association's (BPA) published guidelines to the bacteriological screening of breast milk donated to a District General Hospital milk bank. Samples of donated milk were subjected to bacterial counts and provisional identification after both 24 and 48 h incubation on cysteine lactose electrolyte-deficient (CLED) and Columbia blood agar. 21.8% (76 out of 348) donations of milk failed to reach the BPA acceptable criteria. The organisms responsible for the rejection of these samples were all evident within 24 h incubation, and were not significantly confined to one medium. A large percentage of rejected samples originated from a small number of donor mothers; 63.2% came from one donor. In applying BPA guidelines, both CLED and Columbia blood agar were found to be equally effective in screening for unacceptable organisms in prepasteurization donated breast milk. The 24 h period allowed for bacteriological screening, prior to pasteurization of milk samples, was sufficient to allow the growth of all potentially pathogenic bacteria in this study. To prevent the donation of consistently contaminated milk, more active communication between the milk bank staff and the donor is recommended.
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Affiliation(s)
- K C Wright
- Microbiology Department, Huddersfield Royal Infirmary, UK
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Dugas JE, Feeney AM. Evaluation of a new lithium dosage-prediction technique. Clin Pharm 1983; 2:249-52. [PMID: 6411414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The accuracy of a lithium dosage prediction technique was studied retrospectively. The dosage-prediction technique evaluated is based on lithium body clearance. The medical records of 71 psychiatric patients (30 men, 41 women) were reviewed. Age, sex, height, weight, serum creatinine, and one-compartment intravenous dosage equations were used. The lithium dose that would produce steady-state concentrations equal to those actually attained clinically was calculated. Forty-five (64%) of the predictions were within one capsule/day of the actual dose. There were 42 episodes (59%) of underprediction and 10(14%) of overprediction by one or more capsules per day. Underprediction occurred significantly more often in women than in men (31/41 versus 11/30). Predictions differed from actual doses by three or more capsules per day in 10 cases, nine of which were underpredictions. These patients did not differ significantly from the rest of the study group in age, sex, weight, serum creatinine, creatinine clearance, concurrent medical problems, or other medications. This lithium dosage prediction technique may be reliable, rapid, and inexpensive, but further refinement and prospective evaluation are necessary.
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Feeney JG, Feeney AM. Bacterial excretion rates in the diagnosis of urinary tract infections. Ir Med J 1974; 67:585-8. [PMID: 4617746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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