Evaluation of PD-L1, tumor-infiltrating lymphocytes, and CD8+  and FOXP3+ immune cells in HER2-positive breast cancer treated with neoadjuvant therapies

ConclusionsHigh Ki-67 is a strong predictor for pCR in HER2+  breast cancer. TIL and FOXP3 T cells may play a role in tumor response in HER2+ cancer. PD-L1 is expressed in a subset of HER2+ breast cancer, supporting a role of immunotherapy in treating a subset of HER2+ breast cancers. The role of PD-L1, TIL, and other markers of immunogenicity as pred ictors of response to neoadjuvant chemotherapy in HER2+ breast cancer should be further evaluated.
Source: Breast Cancer Research and Treatment - Category: Cancer & Oncology Source Type: research

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Basel, 18 June 2020 – Roche (SIX: RO, ROG; OTCQX: RHHBY) today announced that the Phase III IMpassion031 study, evaluating Tecentriq® (atezolizumab) in combination with chemotherapy (Abraxane®, albumin-bound paclitaxel; nab-paclitaxel; followed by doxorubicin and cyclophosphamide) in comparison to placebo plus chem otherapy (including Abraxane), met its primary endpoint by demonstrating a statistically significant and clinically meaningful improvement in pathological complete response (pCR) for the treatment of people with early triple-negative breast cancer (TNBC), regardless of PD-L1 expression.“Tripl...
Source: Roche Media News - Category: Pharmaceuticals Source Type: news
Endo Takabe We generated a 4-gene score with genes upregulated in LM2-4, a metastatic variant of MDA-MB-231 (DOK 4, HCCS, PGF, and SHCBP1) that was strongly associated with disease-free survival (DFS) in TCGA cohort (hazard ratio [HR]>1.2, p < 0.02). The 4-gene score correlated with overall survival of TCGA (HR = 1 .44, p < 0 .001), which was validated with DFS and disease-specific survival of METABRIC cohort. The 4-gene score was able to predict worse survival or clinically aggressive tumors, such as high Nottingham pathological grade and advanced cancer staging. High score was associated wit...
Source: Cancers - Category: Cancer & Oncology Authors: Tags: Article Source Type: research
Abstract Efficacy data from the KATHERINE clinical trial comparing ado-trastuzumab emtansine (T-DM1) to trastuzumab in patients with early-stage human epidermal growth factor receptor 2 (HER2)-overexpressing breast cancer with residual disease after neoadjuvant therapy (hazard ratio for invasive disease or death, 0.50; P
Source: Clinical Cancer Research - Category: Cancer & Oncology Authors: Tags: Clin Cancer Res Source Type: research
CONCLUSIONS: The immune microenvironment of HR+/HER2-tumors differs according to tumor biology. This cohort of paired pre-/post-chemotherapy samples suggests a critical role for immunosuppressive macrophage expansion in residual disease. The role of macrophages in chemo-resistance should be explored and further evaluation of macrophage-targeting therapy is warranted. PMID: 31061067 [PubMed - as supplied by publisher]
Source: Clinical Cancer Research - Category: Cancer & Oncology Authors: Tags: Clin Cancer Res Source Type: research
In this study, we evaluated the therapeutic benefit of combining the TAB004 antibody with Liposomal-MSA-IL-2 in immune competent and human MUC1 transgenic (MUC1.Tg) mouse models of PDA and investigated the associated immune responses. Treatment with TAB004 + Lip-MSA-IL-2 resulted in significantly improved survival and slower tumor growth compared to controls in MUC1.Tg mice bearing an orthotopic PDA.MUC1 tumor. Similarly, in the spontaneous model of PDA that expresses human MUC1, the combination treatment stalled the progression of pancreatic intraepithelial pre-neoplastic (PanIN) lesion to adenocarcinoma. Treatment with t...
Source: Frontiers in Oncology - Category: Cancer & Oncology Source Type: research
In conclusion, our findings support CTP as the optimum neoadjuvant regimen for HER2-positive breast cancer, with the best pCR and acceptable toxicity compared with CT. MP provides a therapeutic option for patients with poor performance status. PMID: 31015833 [PubMed]
Source: Journal of Oncology - Category: Cancer & Oncology Tags: J Oncol Source Type: research
, Trocóniz IF, Santisteban M Abstract AIM: Immunotherapy is a rising alternative to traditional treatment in breast cancer (BC) patients in order to transform cold into hot immune enriched tumours and improve responses and outcome. A computational modelling approach was applied to quantify modulation effects of immunotherapy and chemotherapy response on tumour shrinkage and progression-free survival (PFS) in naïve BC patients. METHODS: Eighty-three Her2-negative BC patients were recruited for neoadjuvant chemotherapy with or without immunotherapy based on dendritic cell vaccination. Sequential tum...
Source: Clinical Breast Cancer - Category: Cancer & Oncology Authors: Tags: Br J Clin Pharmacol Source Type: research
By BISHAL GYAWALI MD, PhD Hey, I’m back! Well, you might not have noticed that my blogs were missing for the last three months but anyways, its good to be back. I was having a little time off blogs and social media as I was transitioning in my career but now I am back. Sometimes, it is very difficult to manage time for things that you must do versus things you enjoy doing, especially when these two don’t intersect. For me, these last few months the things I had to do were all bureaucratic while I couldn’t find the time for things I enjoy doing like writing these blogs. But now that we are back,...
Source: The Health Care Blog - Category: Consumer Health News Authors: Tags: Medical Practice Physicians Bishal Gyawali Cancer drugs Clinical Trials Oncology Prostate Cancer RCTs Source Type: blogs
SummaryWhile immunotherapy (IOT) with monoclonal antibodies has long been present in HER2-positive breast cancer, the development of modern IOT concepts such as PD-1/PD-L1 targeting immune checkpoint inhibitors has been slow compared with other malignancies such a  melanoma or lung cancer. Recent clinical trials of IOT have focused on triple-negative breast cancer (TNBC) as no specific treatment options beyond chemotherapy have been available in this subtype; in addition, TNBC apparently harbours the largest immunogenic potential. Meanwhile, initial results from the phase III IMpassion130 trial have been presente...
Source: Memo - Magazine of European Medical Oncology - Category: Cancer & Oncology Source Type: research
AbstractPurpose of ReviewThe purpose of the review is to summarize the data regarding PD-L1 expression in breast cancer and the results of first clinical trials with PD-1 or PD-L1 inhibitors in patients with metastatic breast cancer.Recent FindingsPD-L1 expression is heterogeneous across primary breast cancers, and is generally associated with the presence of tumor-infiltrating lymphocytes and the presence of poor-prognosis features such as high grade, and aggressive molecular subtypes (triple-negative (TN), basal, HER2-enriched). Early phase clinical trials using PD-1 or PD-L1 inhibitors alone or in combination have shown...
Source: Current Oncology Reports - Category: Cancer & Oncology Source Type: research
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