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Breast Cancer

Are Women in Europe or Asia More Likely to Have Breast-Conserving Therapy Than Those in the United States?

Neoadjuvant systemic therapy can shrink tumors in patients with breast cancer and, in some cases, allow patients to receive breast-conserving therapy who would otherwise require mastectomy. However, in the United States, about 55% of patients who become eligible for breast-conserving therapy after...

Breast Cancer

Higher 21-Gene Recurrence Score May Be Associated With Increased Risk of Locoregional Recurrence in Patients With Breast Cancer

A new study shows that a test physicians commonly use to guide chemotherapy for patients with breast cancer after surgery may also help them decide whether radiation therapy may be of benefit. Results published by Wendy A. Woodward, MD, PhD, and colleagues in JAMA Oncology suggest patients with an...

Breast Cancer
Issues in Oncology

Are Racial/Ethnic Disparities in Breast Cancer Diagnosis Caused by Health Insurance Coverage?

Lack of insurance coverage is a major cause of delayed breast cancer screening and treatment among minority women, which could lead to a decrease in a patient’s chance of survival. Nearly half of the disparity in later-stage diagnosis between non-Hispanic white women and black, Hispanic, and...

breast cancer

Hope S. Rugo, MD, on Metastatic Triple-Negative Breast Cancer: Retrospective Analysis of PD-L1 Immunohistochemistry Assays

Hope S. Rugo, MD, of the University of California San Francisco Comprehensive Cancer Center, discusses a retrospective analysis on the effectiveness of the VENTANA PD-L1 SP142 assay, the Dako 22C3 assay, and the VENTANA SP263 assay as predictors of response to atezolizumab plus nab-paclitaxel in patients with metastatic triple-negative breast cancer (Abstract PD1-07).

Breast Cancer

Does Adding Trastuzumab to Adjuvant Chemotherapy Improve Invasive Disease–Free Survival for Patients With HER2-Negative Breast Cancer?

As reported in the Journal of Clinical Oncology by Louis Fehrenbacher, MD, and colleagues, the phase III NSABP B-47/NRG Oncology trial has shown no invasive disease–free survival benefit with the addition of trastuzumab to adjuvant chemotherapy therapy in patients with HER2-negative breast cancer...

Breast Cancer

Dietary Supplement Use During Adjuvant Chemotherapy and Treatment Outcomes in Patients With Early Breast Cancer

As reported in the Journal of Clinical Oncology by Ambrosone et al, an analysis of the SWOG S0221 trial population suggests that use of antioxidant and nonantioxidant dietary supplements, but not multivitamins, before and during adjuvant chemotherapy may be associated with poorer treatment outcomes ...

Breast Cancer

Recurrence Risk With Accelerated Partial- vs Whole-Breast Irradiation After Breast-Conserving Surgery for Early Breast Cancer: Long-Term Follow-up

As reported in The Lancet by Frank A. Vicini, MD, and colleagues, 10-year follow-up in the phase III NSABP B-39/RTOG 0413 equivalence trial has shown that accelerated partial-breast irradiation did not achieve equivalence to whole-breast irradiation in preventing local recurrence in women receiving ...

Breast Cancer

FDA Pooled Analysis of CDK4/6 Inhibitor Treatment for Advanced Hormone Receptor–Positive, HER2-Negative Breast Cancer

In a U.S. Food and Drug Administration (FDA) pooled analysis reported in The Lancet Oncology, Jennifer J. Gao, MD, and colleagues found that the magnitude of progression-free survival benefit with the addition of a cyclin-dependent kinase (CDK) 4/6 inhibitor to endocrine therapy in women with...

Breast Cancer

Overall Survival With the Addition of Ribociclib to Fulvestrant in Hormone Receptor–Positive, HER2-Negative Advanced Breast Cancer: MONALEESA-3

As reported in The New England Journal of Medicine by Dennis J. Slamon, MD, PhD, and colleagues, in the phase III MONALEESA-3 trial, the second interim analysis of overall survival has shown a significant benefit with the addition of ribociclib to fulvestrant in first- or second-line treatment of...

Breast Cancer

Long-Term Results of IBIS-II: Anastrozole for Breast Cancer Prevention

As reported by Jack Cuzick, PhD, and colleagues in The Lancet, blinded follow-up of the IBIS-II trial has shown the continued benefit of anastrozole vs placebo in preventing breast cancer in high-risk postmenopausal women during the 5-year posttreatment period. For the international double-blind...

Breast Cancer

D-CARE Trial: Adjuvant Denosumab for Patients With Early Breast Cancer

As reported in The Lancet Oncology by Robert Coleman, MD, FRCP, and colleagues, the phase III D-CARE trial has shown no benefit of adjuvant therapy with the RANKL inhibitor denosumab vs placebo in improving bone metastasis–free survival in women with moderate- to high-risk early breast cancer....

Breast Cancer

Trastuzumab and Hyaluronidase-oysk for Subcutaneous Use in HER2-Positive Breast Cancer

Early in 2019, trastuzumab and the endoglycosidase hyaluronidase-oysk for subcutaneous injection was approved in the treatment of HER2-positive breast cancer.1,2 The agent is indicated for adjuvant treatment of patients with HER2-overexpressing node-positive or node-negative (estrogen...

Breast Cancer

Expert Point of View: Steven J. Isakoff, MD, PhD

Steven J. Isakoff, MD, PhD, a medical oncologist at Massachusetts General Hospital, Boston, commented on the results of the DESTINY-Breast01 trial. “These data are extraordinarily encouraging, suggesting we will have another new option for patients with metastatic HER2-positive breast cancer. The...

Breast Cancer

Novel Antibody-Drug Conjugate Shows Efficacy in Women With Pretreated, Metastatic HER2-Positive Breast Cancer

The novel antibody-drug conjugate [fam-] trastuzu­mab deruxtecan (T-DXd) achieved high response rates and durable responses in heavily pretreated patients with HER2-positive metastatic breast cancer, according to results of the phase II DESTINY-Breast 01 trial presented at the 2019 San Antonio...

Breast Cancer

Breast-Conserving Surgery and Partial-Breast Reirradiation in Patients With Ipsilateral Disease Recurrence

Findings from the phase II NRG Oncology/RTOG 1014 trial, reported in JAMA Oncology by Douglas W. Arthur, MD, and colleagues showed that partial-breast reirradiation after second lumpectomy for recurrence of ipsilateral breast cancer following previous whole-breast irradiation was an effective...

Breast Cancer

Swedish Study of Risk-Adapted Screening Starting Ages for Relatives of Patients With Breast Cancer

In a study reported in JAMA Oncology, Trasias Mukama, MPH, and colleagues identified risk-adapted screening starting ages for relatives of patients with breast cancer according to the number of affected first-degree and second-degree relatives and the age at diagnosis of affected relatives. The...

Lung Cancer
Bladder Cancer
Colorectal Cancer
Hematologic Malignancies
Myelodysplastic Syndromes
Breast Cancer
Head and Neck Cancer
Immunotherapy

FDA Pipeline: Priority Reviews in SCLC, Bladder Cancer, Colorectal Cancer

Recently, the U.S. Food and Drug Administration (FDA) granted Priority Reviews for treatments in extensive-stage small cell lung cancer (SCLC), non–muscle invasive bladder cancer, and BRAF V600E–mutant colorectal cancer. The Agency also recently issued multiple Breakthrough Therapy designations and ...

Breast Cancer

FDA Approves Fam-Trastuzumab Deruxtecan-nxki for Patients With Unresectable or Metastatic HER2-Positive Breast Cancer

On December 20, the U.S. Food and Drug Administration (FDA) granted accelerated approval to fam-trastuzumab deruxtecan-nxki (Enhertu) for patients with unresectable or metastatic HER2-positive breast cancer who have received two or more prior anti–HER2-based regimens in the metastatic setting....

Breast Cancer

How Effective Is Supplemental MRI Screening for Women With Extremely Dense Breasts?

In the Dutch DENSE study reported in The New England Journal of Medicine, Bakker et al found that supplemental magnetic resonance imaging (MRI) in women with extremely dense breast tissue and normal results on screening mammography was associated with the diagnosis of significantly fewer interval...

Breast Cancer

Companion Diagnostic Approved for Alpelisib/Fulvestrant Therapy

On December 4, the U.S. Food and Drug Administration (FDA) approved FoundationOne CDx to be used as a companion diagnostic for alpelisib in combination with fulvestrant for the treatment of postmenopausal women as well as male patients with hormone receptor–positive, HER2-negative, PIK3CA-mutated,...

Breast Cancer

Mobile App Designed to Match Patients With Metastatic Breast Cancer With Clinical Trials

The Metastatic Breast Cancer Alliance (MBCA), the largest coalition of nonprofit breast cancer organizations, pharmaceutical/biotech companies, and patient advocates in the United States, recently announced the release of MBC Connect 2.0. MBC Connect is an interactive, Web- and mobile-friendly...

Breast Cancer

Expert Point of View: Sherene Loi, MD

Sherene Loi, MD, of Peter MacCallum Cancer Centre, Melbourne, Australia, said that the BROCADE3 trial was positive because it met its primary endpoint. However, she expressed some reservations about adopting this combination as a new standard for HER2-negative BRCA-mutated advanced breast cancer....

Breast Cancer

Veliparib/Chemotherapy Combination Active in HER2-Negative BRCA-Positive Advanced Breast Cancer

The addition of the poly (ADP-ribose) polymerase (PARP) inhibitor veliparib to carboplatin/paclitaxel chemotherapy significantly improved progression-free survival in patients with advanced HER2-negative breast cancer and germline BRCA mutation compared with placebo plus chemotherapy, according to...

Breast Cancer

Recurrence Risk in Black and White Women With Borderline Estrogen Receptor–Positive Breast Cancer

In a study reported in the Journal of the National Cancer Institute, Benefield et al found that black women with borderline estrogen receptor (ER)-positive breast cancer had significantly poorer disease-free interval compared with those with ER-positive disease, irrespective of whether they...

Breast Cancer
Immunotherapy

First-Line Atezolizumab Plus Nab-paclitaxel in Advanced Triple-Negative Breast Cancer: Second Overall Survival Interim Analysis

As reported in The Lancet Oncology by Peter Schmid, MD, and colleagues, the prespecified second interim analysis of overall survival in the phase III IMpassion130 trial has shown no overall survival benefit with the addition of atezolizumab to nab-paclitaxel as first-line treatment of unresectable, ...

Breast Cancer

Study Links Sustained Weight Loss to Reduced Breast Cancer Risk

A new study finds that women who lost weight after age 50 and kept it off had a lower risk of breast cancer than women whose weight remained stable, helping answer a vexing question in cancer prevention.1 The reduction in risk increased with the amount of weight lost and was specific to women not...

breast cancer

Terry P. Mamounas, MD, MPH, on Extending Letrozole Treatment in Hormone Receptor–Positive Breast Cancer

Terry P. Mamounas, MD, MPH, of Orlando Health UF Health Cancer Center, discusses 10-year results from NRG Oncology/NSABP B-42, which showed that, for postmenopausal women with hormone receptor–positive breast cancer who have completed previous adjuvant therapy with an aromatase inhibitor or with tamoxifen followed by an aromatase inhibitor, extended treatment with letrozole improved disease-free survival (Abstract GS4-01).

breast cancer
immunotherapy

Luca Gianni, MD, on the Neoadjuvant Treatment of Triple-Negative Breast Cancer

Luca Gianni, MD, of the Fondazione Michelangelo, discusses findings from the NeoTRIP trial on pathologic complete response to neoadjuvant treatment with or without atezolizumab in triple-negative, early high-risk, and locally advanced breast cancer (Abstract GS3-04).

breast cancer

Hongchao Pan, PhD, on an Update on 5 Years of Endocrine Therapy for Early Breast Cancer

Hongchao Pan, PhD, of the University of Oxford, discusses an analysis of 86,000 women in the Early Breast Cancer Trialists’ Collaborative Group database, which showed that the risk of distant recurrence 20 years after a diagnosis of node-negative, estrogen receptor–negative early-stage breast cancer in women who discontinued endocrine therapy at 5 years is likely to be about a third lower now than in his group’s previous report (Abstract GS2-04).

breast cancer

Nadine M. Tung, MD, on HER2-Negative Breast Cancer: INFORM Trial of Cisplatin vs Doxorubicin/Cyclophosphamide

Nadine M. Tung, MD, of Beth Israel Deaconess Medical Center, discusses cisplatin vs doxorubicin/cyclophosphamide (AC) as neoadjuvant treatment in BRCA-mutation carriers with HER2-negative breast cancer. Although cisplatin as a single agent shows activity in this setting, the pathologic complete response with this agent alone is not higher than that with standard AC chemotherapy (Abstract GS6-03).

breast cancer

Ivana Sestak, PhD, on Clinical Treatment Score From TAILORx: Predicting Distant Breast Cancer Recurrence

Ivana Sestak, PhD, of Queen Mary University of London and the Centre for Cancer Prevention, discusses study findings that confirm the prognostic ability of the Clinical Treatment Score at 5 years (CTS5) for late distant recurrence, specifically for patients older than 50 years and/or for those deemed to have intermediate- or high-risk hormone receptor–positive, HER2-negative, node-negative breast cancer. The CTS5 is less prognostic in women younger than 50 who received 5 years of endocrine therapy alone (Abstract GS4-03).

breast cancer

Marie-Jeanne T.F.D. Vrancken Peeters, MD, PhD, on Omitting Breast Surgery: Results of the MICRA Trial

Marie-Jeanne T.F.D. Vrancken Peeters, MD, PhD, of the Netherlands Cancer Institute, discusses an interim study analysis showing that ultrasound-guided core biopsies of the breast in patients with excellent response on MRI after neoadjuvant systemic therapy may not be accurate enough to safely select patients with pathologic complete response for omission of surgery (Abstract GS5-06).

breast cancer
immunotherapy

Ariella B. Hanker, PhD, on Therapeutic Implications of HER2 and HER3 Mutations in Breast Cancer

Ariella B. Hanker, PhD, of UT Southwestern Medical Center, discusses data showing that breast cancers expressing co-occurring HER2 and HER3 mutations may require the addition of a phosphoinositide 3-kinase alpha inhibitor to a HER2 tyrosine kinase inhibitor (Abstract GS6-04).

breast cancer

Rowan T. Chlebowski, MD, PhD, on Breast Cancer: Findings From The Women’s Health Initiative

Rowan T. Chlebowski, MD, PhD, of the Lundquist Institute at Harbor-UCLA Medical Center, discusses the long-term influence of using estrogen plus progestin or estrogen alone on breast cancer incidence and mortality (Abstract GS5-00).

breast cancer

Gerardo Antonio Umanzor Funez, MD, on Metastatic Breast Cancer: Comparing IV and Oral Formulations of Paclitaxel

Gerardo Antonio Umanzor Funez, MD, of Liga Contra El Cáncer, discusses phase III findings on intravenous (IV) paclitaxel and oral paclitaxel plus encequidar (a novel P-gp inhibitor), the first orally administered taxane regimen shown to be superior to the IV formulation in terms of response and survival with less neuropathy (Abstract GS6-01).

breast cancer

Ian E. Krop, MD, PhD, on Trastuzumab Deruxtecan for Patients With Previously Treated, HER2-Positive Metastatic Breast Cancer

Ian E. Krop, MD, PhD, of Dana-Farber Cancer Institute, discusses phase II trial findings on trastuzumab deruxtecan, a HER2-targeting antibody-drug conjugate, in patients with HER2-positive metastatic breast cancer who were previously treated with trastuzumab emtansine (Abstract GS1-03).

breast cancer

Jack Cuzick, PhD, on the International Breast Cancer Intervention Study II: 10-Year Results

Jack Cuzick, PhD, of Queen Mary University of London, discusses the substantially greater benefits of anastrozole as compared with tamoxifen in terms of preventing breast cancer, with no increase in fractures or other reported serious side effects (Abstract GS4-04).

breast cancer

Madeleine M.A. Tilanus-Linthorst, MD, PhD, on MRI vs Mammography: Comparing Cost and Effectiveness

Madeleine M.A. Tilanus-Linthorst, MD, PhD, of Erasmus University, reports data from the first randomized trial comparing MRI breast cancer screening with mammography in women with a familial risk. Because MRI screening detected cancer at an earlier stage, it might reduce the use of adjuvant chemotherapy and decrease breast cancer–related mortality (Abstract GS4-07).

breast cancer

Joerg Heil, MD, PhD, on Image-Guided Vacuum-Assisted Breast Biopsy

Joerg Heil, MD, PhD, of the University Hospital Heidelberg, discusses findings on how accurately this technique can diagnose residual disease and pathologic complete response after neoadjuvant chemotherapy in patients with breast cancer. These data may help tailor, de-escalate, and potentially avoid unnecessary surgeries (Abstract GS5-03).

breast cancer
immunotherapy

Hope S. Rugo, MD, on HER2-Positive Metastatic Breast Cancer: SOPHIA Trial of Chemotherapy Plus Margetuximab or Trastuzumab

Hope S. Rugo, MD, of the University of California San Francisco Comprehensive Cancer Center, discusses trial data on margetuximab plus chemotherapy, which improved progression-free survival in patients with previously treated HER2-positive metastatic breast cancer when compared with trastuzumab plus chemotherapy. Maturing data comparing overall survival also provides new insights (Abstract GS1-02).

breast cancer

Javier Cortes, MD, PhD, on Triple-Negative Breast Cancer: Results From the KEYNOTE-119 Trial of Pembrolizumab vs Chemotherapy

Javier Cortes, MD, PhD, of the IOB Institute of Oncology, discusses study findings that suggested pembrolizumab offered a prolonged survival benefit compared to chemotherapy for a subset of patients with previously treated metastatic triple-negative breast cancer. In the trial, high tumor-infiltrating lymphocytes were significantly associated with better clinical outcomes with the checkpoint inhibitor.

breast cancer

Joseph Sparano, MD: The William L. McGuire Memorial Lecture

Joseph Sparano, MD, of the Montefiore Medical Center, discusses three challenges: How can gene-expression profiles and other diagnostic tests be used to guide the use of adjuvant systemic therapy? Is it time to reappraise active surveillance? Are there diagnostic and therapeutic strategies that can identify tumors at highest risk of metastasis, and novel therapies that can block the spread of disease?

breast cancer

Milan Radovich, PhD, on ctDNA After Neoadjuvant Chemotherapy and Recurrence in Triple-Negative Breast Cancer

Milan Radovich, PhD, of Indiana University School of Medicine, discusses trial findings that show patients with triple-negative breast cancer who are at high risk of relapse after receiving preoperative chemotherapy can be risk-stratified based on the presence of minimal residual disease as determined by circulating tumor DNA and circulating tumor cells (Abstract GS5-02).

breast cancer
genomics/genetics

Belinda Kingston, MB ChB, on the Genomic Landscape of Breast Cancer Based on ctDNA Analysis

Belinda Kingston, MB ChB, of the Institute of Cancer Research London, discusses next-generation sequencing results from the plasmaMATCH trial, including the incidence of gene alterations overall, as well as the associations with clinical and pathologic features that may help direct treatment decisions (Abstract GS3-07).

breast cancer

Tari A. King, MD, on Molecular Differences Between Primary and Metastatic Breast Tumors

Tari A. King, MD, of Brigham and Women’s Hospital and Dana-Farber/ Brigham and Women’s Cancer Center, discusses retrospective findings from the AURORA U.S. Network on molecular differences between primary tumors and metastases, a better understanding of which may help lead to more effective treatment of metastatic breast cancer (Abstract GS3-08).

breast cancer

Rashmi K. Murthy, MD, on HER2-Positive Metastatic Breast Cancer: HER2CLIMB Trial of Tucatinib, Capecitabine, and Trastuzumab

Rashmi K. Murthy, MD, of The University of Texas MD Anderson Cancer Center, discusses data on the efficacy and safety of tucatinib, trastuzumab, and capecitabine, a treatment regimen under investigation for patients with advanced HER2-positive metastatic breast cancer refractory to standard-of-care regimens (Abstract GS1-01).

Breast Cancer

SABCS 2019: Oral vs Intravenous Paclitaxel for Patients With Metastatic Breast Cancer

Patients with metastatic breast cancer who received an oral formulation of paclitaxel had better response and survival and less neuropathy than patients who received intravenous paclitaxel, according to results of a phase III trial presented at by Umanzor et al at the San Antonio Breast Cancer...

Breast Cancer

SABCS 2019: Residual Cancer Burden After Neoadjuvant Chemotherapy as a Predictive Tool

A large meta-analysis of patients with breast cancer showed that residual cancer burden after neoadjuvant chemotherapy is an accurate long-term predictor of recurrence and survival across all breast cancer subtypes, according to data presented by Yau et al at the 2019 San Antonio Breast Cancer...

Breast Cancer

SABCS 2019: Breast Cancer Incidence With Estrogen/Progestin vs Estrogen Alone in Postmenopausal Women

A study investigating the long-term influence of estrogen plus progestin compared with estrogen alone on breast cancer incidence in postmenopausal women has found that the menopausal hormone therapies had opposite effects on breast cancer incidence. While estrogen alone decreased breast cancer...

Breast Cancer

SABCS 2019: ctDNA May Be an Independent Predictor of Disease Recurrence in Patients With Early-Stage Triple-Negative Breast Cancer

The detection of circulating tumor DNA (ctDNA) in patients with early-stage triple-negative breast cancer treated with surgery following neoadjuvant chemotherapy is an independent predictor of disease recurrence, according to a phase II study investigating the potential of using ctDNA to detect...

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