Efficacy and Safety of the MDM2–p53 Antagonist Brigimadlin (BI 907828) in Patients with Advanced Biliary Tract Cancer: A Case Series

Noboru Yamamoto,1 Anthony Tolcher,2 Navid Hafez,3,4 Iwona Lugowska,5 Rodryg Ramlau,6 Teresa Macarulla,7,8 Junxian Geng,9 Jian Li,9 Michael Teufel,9 Angela Märten,10 Patricia LoRusso3 1Department of Experimental Therapeutics, National Cancer Center Hospital, Tokyo, Japan; 2NEXT Oncology, San Antonio, TX, USA; 3Yale Comprehensive Cancer Center, Yale School of Medicine, New Haven, CT, USA; 4The Angeles Clinic and Research Institute, A Cedars-Sinai Affiliate, Los Angeles, CA, USA; 5Early Phase Clinical Trials Unit, Maria Skłodowska Curie National Research Institute of Oncology, Warsaw, Poland; 6Institute of Oncology, Poznan University of Medical Sciences, Poznan, Poland; 7Vall d’Hebrón University Hospital, Barcelona, Spain; 8Vall d’Hebrón Institute of Oncology (VHIO), Barcelona, Spain; 9Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, CT, USA; 10Boehringer Ingelheim International GmbH, Ingelheim am Rhein, GermanyCorrespondence: Noboru Yamamoto, Department of Experimental Therapeutics, National Cancer Center Hospital, Tokyo, Japan, Tel + 81-3-3542-2511 ext 7319, Email [email protected]: In patients with advanced biliary tract cancer (BTC), first-line chemotherapy plus immunotherapy has improved outcomes; however, second-line options that reflect the disease’s molecular heterogeneity are still needed. One emerging target is MDM2, amplified in ~5– 8% of BTC cases.Methods: This is a subset analysis of two ongoing Phase Ia/Ib trials assessing patients treated with brigimadlin (BI 907828; a highly potent, oral MDM2–p53 antagonist) ± ezabenlimab (PD-1 inhibitor) ± BI 754111 (anti-LAG-3; n = 1).Results: Results from 12 patients with BTC are shown (monotherapy: n = 6/combination: n = 6). Six patients achieved partial response (monotherapy: n = 2/combination: n = 4), four had stable disease; responses were durable. Brigimadlin had a manageable safety profile. Seven patients had dose reductions due to adverse events, but no treatment-related adverse events led to treatment discontinuation.Conclusion: Brigimadlin demonstrated anti-tumor activity in patients with advanced MDM2-amplified BTC, and warrants further investigation.Plain Language Summary: Biliary tract carcinoma (BTC) is a cancer that affects the bile ducts which are part of the digestive system. Usually, the first treatment for advanced BTC (ie cannot be removed surgically and/or has spread) is chemotherapy in combination with immunotherapy. However, if chemotherapy does not work, or stops working, there are few treatment options available in second-line. Accordingly, intensive research is ongoing to try and find effective drugs. One potential medicine, called brigimadlin (or BI 907828), is a tablet that activates a molecule in tumor cells called p53. The normal function of p53 is to kill cells when they first start to become cancerous. However, if p53 is turned off by genetic mutations, or other mechanisms, then cancer can develop. Although p53 is rarely mutated in BTC tumors, it is inactivated by another molecule called MDM2 which is usually present at abnormally high levels in BTC. Brigimadlin prevents interaction between MDM2 and p53. This activates p53 and causes the cancer to die. Two clinical trials are currently assessing brigimadlin in a range of cancers, including BTC, with the aim of identifying a safe dose that can be examined in more detail in larger trials. So far, 12 patients with BTC have been treated. The patients’ tumors significantly shrank in six of these patients and remained stable in a further four patients. Side effects were as expected and could be tolerated by pausing treatment or lowering the dose. These results show that brigimadlin should be tested further in patients with advanced BTC.Keywords: biliary tract cancer, MDM2-p53 antagonist, brigimadlin, ezabenlimab, MDM2, MDM2-amplifie

Merkel-cell carcinoma: ESMO-EURACAN Clinical Practice Guideline for diagnosis, treatment and follow-up

: • This ESMO Clinical Practice Guideline provides key recommendations for managing Merkel-cell carcinoma (MCC). • Recommendations are based on available scientific data and the multidisciplinary group of experts’ collective opinion. • The guideline covers clinical and pathological diagnosis, staging and risk assessment, treatment and follow-up. • Algorithms for the management of locoregional and inoperable/metastatic disease are provided. • A multidisciplinary team with a high level of expertise in MCC should diagnose and make decisions about therapy

Uveal Melanoma: A European Network to Face the Many Challenges of a Rare Cancer

Uveal melanoma (UM) is the most frequent primary ocular cancer in adults, accounting for 5% of all melanomas. Despite effective treatments for the primary tumour, up to 50% of UM patients will develop metastasis, leading to a very poor prognosis and a median overall survival of 6 to 12 months, with no major improvements in the last 30 years. There is no standard oncological treatment available for metastatic UM patients, and BRAF/MEK and immune checkpoint inhibitors show disappointing results when compared to cutaneous melanoma (CM). Recent advances in biology, however, identified specific gene and chromosome alterations, potentially permitting an actively tailored surveillance strategy, and dedicated clinical studies. Being a rare cancer, UM patients have to overcome issues such as identifying referral centres, having access to information, and partnering with oncologists for specific management strategies and research priorities. Here, we describe how the European Rare Adult solid Cancer Network (EURACAN) will help in addressing these challenges and accelerating international collaborations to enhance the development of innovative treatments in UM

Identification of a gene signature for discriminating metastatic from primary melanoma using a molecular interaction network approach

Understanding the biological factors that are characteristic of metastasis in melanoma remains a key approach to improving treatment. In this study, we seek to identify a gene signature of metastatic melanoma. We configured a new network-based computational pipeline, combined with a machine learning method, to mine publicly available transcriptomic data from melanoma patient samples. Our method is unbiased and scans a genome-wide protein-protein interaction network using a novel formulation for network scoring. Using this, we identify the most influential, differentially expressed nodes in metastatic as compared to primary melanoma. We evaluated the shortlisted genes by a machine learning method to rank them by their discriminatory capacities. From this, we identified a panel of 6 genes, ALDH1A1, HSP90AB1, KIT, KRT16, SPRR3 and TMEM45B whose expression values discriminated metastatic from primary melanoma (87% classification accuracy). In an independent transcriptomic data set derived from 703 primary melanomas, we showed that all six genes were significant in predicting melanoma specific survival (MSS) in a univariate analysis, which was also consistent with AJCC staging. Further, 3 of these genes, HSP90AB1, SPRR3 and KRT16 remained significant predictors of MSS in a joint analysis (HR = 2.3, P = 0.03) although, HSP90AB1 (HR = 1.9, P = 2 × 10−4) alone remained predictive after adjusting for clinical predictors

Health-related quality-of-life results from PALETTE: A randomized, double-blind, phase 3 trial of pazopanib versus placebo in patients with soft tissue sarcoma whose disease has progressed during or after prior chemotherapy-a European Organization for research and treatment of cancer soft tissue and bone sarcoma group global network study (EORTC 62072)

Contains fulltext : 152958.pdf (publisher's version ) (Open Access)BACKGROUND: Health-related quality of life (HRQoL) was an exploratory endpoint in the PALETTE trial, a global, double-blind, randomized, phase 3 trial of pazopanib 800 mg versus placebo as second-line or later treatment for patients with advanced soft tissue sarcoma (N = 369). In that trial, progression-free survival was significantly improved in the pazopanib arm (median, 4.6 vs 1.6 months; hazard ratio, 0.31; P < .001), and toxicity of pazopanib consisted mainly of fatigue, diarrhea, nausea, weight loss, and hypertension. METHODS: HRQoL was assessed using the 30-item core European Organization for the Research and Treatment of Cancer (EORTC) Quality-of-Life Questionnaire (EORTC QLQ-C30) at baseline and at weeks 4, 8, and 12 in patients who received treatment on protocol. The primary HRQoL endpoint was the EORTC QLQ-C30 global health status scale. RESULTS: Compliance with HRQoL assessments was good, ranging from 94% at baseline to 81% at week 12. Differences in scores on the EORTC QLQ-C30 global health status subscale between the 2 treatment arms were not statistically significant and did not exceed the predetermined, minimal clinically important difference of 10 points (P = .291; maximum difference, 3.8 points). Among the other subscales, the pazopanib arm reported significantly worse symptom scores for diarrhea (P < .001) loss of appetite (P < .001), nausea/vomiting (P < .001), and fatigue (P = .012). In general, HRQoL scores tended to decline over time in both arms. CONCLUSIONS: HRQoL did not improve with the receipt of pazopanib. However, the observed improvement in progression-free survival without impairment of HRQoL was considered a meaningful result. The toxicity profile of pazopanib was reflected in the patients' self-reported symptoms but did not translate into significantly worse overall global health status during treatment. Cancer 2015;121:2933-2941. (c) 2015 American Cancer Society