Browsing ICR Divisions by author "Johnston, Stephen"
Now showing items 1-19 of 19
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Abemaciclib as initial therapy for advanced breast cancer: MONARCH 3 updated results in prognostic subgroups.
(2021-06-22)In MONARCH 3, continuous dosing of abemaciclib with an aromatase inhibitor (AI) conferred significant clinical benefit to postmenopausal women with HR+, HER2- advanced breast cancer. We report data for clinically prognostic ... -
Abiraterone shows alternate activity in models of endocrine resistant and sensitive disease.
(2018-08)Background Resistance to endocrine therapy remains a major clinical problem in the treatment of oestrogen-receptor positive (ER+) breast cancer. Studies show androgen-receptor (AR) remains present in 80-90% of metastatic ... -
Buparlisib plus fulvestrant in postmenopausal women with hormone-receptor-positive, HER2-negative, advanced breast cancer progressing on or after mTOR inhibition (BELLE-3): a randomised, double-blind, placebo-controlled, phase 3 trial.
(2018-01)BACKGROUND:Activation of the PI3K/AKT/mTOR pathway occurs frequently in breast cancer that is resistant to endocrine therapy. Approved mTOR inhibitors effectively inhibit cell growth and proliferation but elicit AKT ... -
Clinical strategies for rationale combinations of aromatase inhibitors with novel therapies for breast cancer.
(2007-08)Improving endocrine responsiveness and preventing the development of resistance is the goal of many current strategies that are looking to combine aromatase inhibitors with novel drugs that target various pathways in ... -
Development and responses of brain metastases during treatment with trastuzumab emtansine (T-DM1) for HER2 positive advanced breast cancer: A single institution experience.
(2018-05)Ado-trastuzumab emtansine (T-DM1) is an antibody-drug conjugate that does not cross an intact blood-brain barrier. In the EMILIA trial of T-DM1 vs capecitabine/lapatinib for HER2 positive advanced breast cancer, all patients ... -
Enhancing endocrine response with novel targeted therapies: why have the clinical trials to date failed to deliver on the preclinical promise?
(2008-02)Acquired resistance to endocrine therapies has severely limited their long-term effectiveness in breast cancer. In recent years a clear rationale has developed for combining signal transduction inhibitors (STIs) with ... -
Growth factor signalling and response to endocrine therapy: the Royal Marsden Experience.
(2005-07)De novo resistance to endocrine therapy is a near-universal feature of oestrogen receptor (ER)- negative breast cancer. Although many ER-positive breast cancers also show no response to tamoxifen or aromatase inhibitors ... -
High-Level Clonal FGFR Amplification and Response to FGFR Inhibition in a Translational Clinical Trial.
(2016-08)Unlabelled FGFR1 and FGFR2 are amplified in many tumor types, yet what determines response to FGFR inhibition in amplified cancers is unknown. In a translational clinical trial, we show that gastric cancers with high-level ... -
Life following aromatase inhibitors--where now for endocrine sequencing?
(2005-01)The third-generation non-steroidal aromatase inhibitors (AIs) are challenging tamoxifen as treatments of choice for early and advanced breast cancer in postmenopausal women with estrogen receptor (ER)-positive disease. ... -
Phase III, Randomized Study of Dual Human Epidermal Growth Factor Receptor 2 (HER2) Blockade With Lapatinib Plus Trastuzumab in Combination With an Aromatase Inhibitor in Postmenopausal Women With HER2-Positive, Hormone Receptor-Positive Metastatic Breast Cancer: ALTERNATIVE.
(2018-03)Purpose Human epidermal growth factor receptor 2 (HER2) targeting plus endocrine therapy (ET) improved clinical benefit in HER2-positive, hormone receptor (HR)-positive metastatic breast cancer (MBC) versus ET alone. Dual ... -
Plasma ESR1 Mutations and the Treatment of Estrogen Receptor-Positive Advanced Breast Cancer.
(2016-09)Purpose ESR1 mutations are selected by prior aromatase inhibitor (AI) therapy in advanced breast cancer. We assessed the impact of ESR1 mutations on sensitivity to standard therapies in two phase III randomized trials that ... -
Prognostic Value of Intrinsic Subtypes in Hormone Receptor-Positive Metastatic Breast Cancer Treated With Letrozole With or Without Lapatinib.
(2016-10)Importance The value of the intrinsic subtypes of breast cancer (luminal A, luminal B, human epidermal growth factor receptor 2 [currently known as ERBB2, but referred to as HER2 in this study]-enriched, and basal-like) ... -
Randomized Phase II Study Evaluating Palbociclib in Addition to Letrozole as Neoadjuvant Therapy in Estrogen Receptor-Positive Early Breast Cancer: PALLET Trial.
(2019-01)Purpose CDK4/6 inhibitors are used to treat estrogen receptor (ER)-positive metastatic breast cancer (BC) in combination with endocrine therapy. PALLET is a phase II randomized trial that evaluated the effects of combination ... -
Relationship between IHC4 score and response to neo-adjuvant chemotherapy in estrogen receptor-positive breast cancer.
(2017-07)Aims To determine whether IHC4 score assessed on pre-treatment core biopsies (i) predicts response to neo-adjuvant chemotherapy in ER-positive (ER+) breast cancer; (ii) provides more predictive information than Ki67 ... -
Src Is a Potential Therapeutic Target in Endocrine-Resistant Breast Cancer Exhibiting Low Estrogen Receptor-Mediated Transactivation.
(2016-01)Despite the effectiveness of endocrine therapies in estrogen receptor positive (ER+) breast cancer, approximately 40% of patients relapse. Previously, we identified the Focal-adhesion kinase canonical pathway as a major ... -
Targeting tumour re-wiring by triple blockade of mTORC1, epidermal growth factor, and oestrogen receptor signalling pathways in endocrine-resistant breast cancer.
(2018-06-08)Background Endocrine therapies are the mainstay of treatment for oestrogen receptor (ER)-positive (ER + ) breast cancer (BC). However, resistance remains problematic largely due to enhanced cross-talk between ER and growth ... -
Tracking evolution of aromatase inhibitor resistance with circulating tumour DNA analysis in metastatic breast cancer.
(2018-01)Background:Selection of resistance mutations may play a major role in the development of endocrine resistance. ESR1 mutations are rare in primary breast cancer but have high prevalence in patients treated with aromatase ... -
Treatment and prognosis of leptomeningeal disease secondary to metastatic breast cancer: A single-centre experience.
(2017-12)Purpose Leptomeningeal disease (LMD) is an uncommon complication of advanced breast cancer. The prognosis is poor, and although radiotherapy (RT), systemic and intra-thecal (IT) chemotherapy are accepted treatment modalities, ...
