A pilot study of chlorambucil in pre-treated metastatic pancreatic adenocarcinoma patients bearing germline BRCA or other DNA damage repair system variants.

BACKGORUND: Pancreatic adenocarcinoma remains a malignancy with a grim prognosis and scarce personalized treatment options. Pathogenic variants of DNA damage repair (DDR) genes are emerging as molecular targets, as they confer a higher sensitivity to DNA-damaging agents. This study aimed at assessing the activity of chlorambucil as salvage therapy in metastatic pancreatic cancer patients bearing a germline pathogenetic variant or variant of uncertain significance on a DDR-related gene. METHODS: Platinum-pretreated metastatic pancreatic cancer patients harbouring a germline variant on a DDR gene received chlorambucil at a daily oral dose of 6 mg/m2 for 42 every 56 days for the first cycle and for 14 every 28 days for the following cycles, until disease progression or unacceptable toxicity. The primary endpoint was 6-month progression-free survival rate (PFS-6). Median progression-free survival (PFS) and overall survival (OS) were secondarily described. RESULTS: Twenty patients were enrolled between December 2020 and September 2022. PFS-6 was 5%, median PFS and OS were 1.6 months and 3.0 months, respectively. Grade-3 adverse events were observed in 25% of patients, while no Grade-4 toxicity was reported. CONCLUSIONS: Single agent chlorambucil did not show sufficient signal of activity to warrant its further investigation in metastatic pancreatic cancer patients bearing a DDR-related germline alteration.

HOXD8 hypermethylation as a fully sensitive and specific biomarker for biliary tract cancer detectable in tissue and bile samples.

BACKGROUND: Biliary tract cancers (BTC) are rare but highly aggressive tumours with poor prognosis, usually detected at advanced stages. Herein, we aimed at identifying BTC-specific DNA methylation alterations. METHODS: Study design included statistical power and sample size estimation. A genome-wide methylation study of an explorative cohort (50 BTC and ten matched non-tumoral tissue samples) has been performed. BTC-specific altered CpG islands were validated in over 180 samples (174 BTCs and 13 non-tumoral controls). The final biomarkers, selected by a machine-learning approach, were validated in independent tissue (18 BTCs, 14 matched non-tumoral samples) and bile (24 BTCs, five non-tumoral samples) replication series, using droplet digital PCR. RESULTS: We identified and successfully validated BTC-specific DNA methylation alterations in over 200 BTC samples. The two-biomarker panel, selected by an in-house algorithm, showed an AUC > 0.97. The best-performing biomarker (chr2:176993479-176995557), associated with HOXD8, a pivotal gene in cancer-related pathways, achieved 100% sensitivity and specificity in a new series of tissue and bile samples. CONCLUSIONS: We identified a novel fully efficient BTC biomarker, associated with HOXD8 gene, detectable both in tissue and bile by a standardised assay ready-to-use in clinical trials also including samples from non-invasive matrices.

Cancer patient perspective in the arena of COVID-19 pandemic.

OBJECTIVE: The coronavirus disease 2019 (COVID-19) outbreak has been declared a global pandemic of unprecedented proportions. Italy is a country which has been heavily affected. Cancer patients are at a higher risk owing to their intrinsic fragility related to their underlying disease and oncologic treatment. Against this backdrop, we conducted a survey to investigate how patients perceived their condition, clinical management and availability of information during the pandemic. METHODS: Between 15 April and 1 May 2020 a survey was submitted to cancer patients at oncology departments in the Marche region. Questions regarding the perception of personal safety, continuity of cancer care, information quality and psychological distress. RESULTS: Seven hundred patients participated in the survey; 59% were female and 40% were aged between 46 and 65. The majority of the participants perceived compliance with appropriate safety standards by cancer care providers and 80% were reassured about their concerns during the medical interview. 40% were worried of being at a higher risk of infection and 71% felt they were at a greater risk because of chemotherapy. 55% felt that postponing cancer treatment could reduce its efficacy, however 76% declared they did not feel abandoned at the time of treatment postponement. Patients between 46 and 65 years declared a significant reduction in sleep (p < 0.01) and in concentration (p = 0.03). CONCLUSIONS: The emergency care offered to cancer patients has been deemed satisfactory in terms of both safety standards and care management. However, the majority of participants perceived the mutual negative influence between their oncologic disease and the risk of infection highlighting the need for special measures to ensure safe continuity of care.

A prognostic model in patients with advanced biliary tract cancer receiving first-line chemotherapy.

BACKGROUND: Standard treatment of advanced biliary tract cancer (aBTC) is represented by first-line chemotherapy (CT1). However, some patients do not gain any benefit from CT1, contributing to the overall dismal prognosis of aBTC. The present study aimed to devise a prognostic model in aBTC patients receiving CT1. METHODS: A large panel of clinical, laboratory, and pathology variables, available before the start of CT1, were retrospectively assessed in a multi-centric cohort to determine their prognostic value on univariate and multivariate regression analysis. The variables that showed a significant correlation with overall survival (OS) were computed in a three-tier prognostic score. External validation of the prognostication performance was carried out. RESULTS: Clinical histories of 935 patients (median OS 10.3 months), with diagnosis dates ranging from 2001 to 2017, were retrieved from 14 institutions. According to multivariate analysis, Eastern Cooperative Oncology Group performance status, carbohydrate antigen 19.9, albumin levels, and neutrophil/lymphocyte ratio were strongly associated with OS (p <0.01). The prognostic score could generate a highly significant stratification (all between-group p values ≤0.001) into groups of favorable (comprising 51.5% of the sample), intermediate (39.2%), and poor prognosis (9.3%): median OS was 12.7 (CI95% 11.0-14.4), 7.1 (CI95% 5.8-8.4), and 3.2 months (CI95% 1.7-4.7), respectively. This OS gradient was replicated in the validation set (129 patients), with median OS of 12.7 (CI95% 11.0-14.3), 7.5 (CI95% 6.1-8.9), and 1.4 months (CI95% 0.1-2.7), respectively (all between-group p values ≤0.05). CONCLUSION: A prognostic score, derived from a limited set of easily-retrievable variables, efficiently stratified a large population of unselected aBTC patients undergoing CT1. This tool could be useful to clinicians, to ascertain the potential benefit from CT1 at the start of treatment.

Role of SIRT-3, p-mTOR and HIF-1α in Hepatocellular Carcinoma Patients Affected by Metabolic Dysfunctions and in Chronic Treatment with Metformin.

The incidence of hepatocellular carcinoma deriving from metabolic dysfunctions has increased in the last years. Sirtuin- (SIRT-3), phospho-mammalian target of rapamycin (p-mTOR) and hypoxia-inducible factor- (HIF-1α) are involved in metabolism and cancer. However, their role in hepatocellular carcinoma (HCC) metabolism, drug resistance and progression remains unclear. This study aimed to better clarify the biological and clinical function of these markers in HCC patients, in relation to the presence of metabolic alterations, metformin therapy and clinical outcome. A total of 70 HCC patients were enrolled: 48 and 22 of whom were in early stage and advanced stage, respectively. The expression levels of the three markers were assessed by immunohistochemistry and summarized using descriptive statistics. SIRT-3 expression was higher in diabetic than non-diabetic patients, and in metformin-treated than insulin-treated patients. Interestingly, p-mTOR was higher in patients with metabolic syndrome than those with different etiology, and, similar to SIRT-3, in metformin-treated than insulin-treated patients. Moreover, our results describe a slight, albeit not significant, benefit of high SIRT-3 and a significant benefit of high nuclear HIF-1α expression in early-stage patients, whereas high levels of p-mTOR correlated with worse prognosis in advanced-stage patients. Our study highlighted the involvement of SIRT-3 and p-mTOR in metabolic dysfunctions that occur in HCC patients, and suggested SIRT-3 and HIF-1α as predictors of prognosis in early-stage HCC patients, and p-mTOR as target for the treatment of advanced-stage HCC.

Estimating Survival Probabilities of Advanced Gastric Cancer Patients in the Second-Line Setting: The Gastric Life Nomogram.

OBJECTIVE: We built and externally validated a nomogram for predicting the overall survival (OS) probability of advanced gastric cancer patients receiving second-line treatment. METHODS: The nomogram was developed on a set of 320 Italian patients and validated on two independent sets (295 Italian and 172 Korean patients). Putative prognostic variables were selected using a random forest model and included in the multivariable Cox model. The nomogram's performance was evaluated by calibration plot and C index. RESULTS: ECOG performance status, neutrophils to lymphocytes ratio, and peritoneal involvement were selected and included into the multivariable model. The C index was 0.72 (95% CI 0.68-0.75) in the development set, 0.69 (95% CI 0.65-0.73) in the Italian validation set, but only 0.57 (95% CI 0.52-0.62) in the Korean set. While Italian calibrations were quite good, the Korean one was poor. Regarding 6-month OS predictions, calibration was best in both Caucasian cohorts and worst the in Asian one. CONCLUSIONS: Our nomogram may be a useful tool to predict 3- or 6-month OS in Caucasian gastric cancer patients eligible for second-line therapy. Based on three easy-to-collect variables, the Gastric Life nomogram may help clinicians improve patient selection for second-line treatments and assist in clinical trial enrollment.

Mismatch repair deficiency may affect clinical outcome through immune response activation in metastatic gastric cancer patients receiving first-line chemotherapy.

INTRODUCTION: The microsatellite-instable gastric cancer subtype, because of its supposed high antigenic potential, is a promising candidate for immunotherapy. We analyzed if the presence of a defective mismatch repair (MMR) system is associated with other markers of immune response and their relationship with outcome in advanced gastric cancer patients. METHODS: We analyzed the relationship between clinical outcome and MMR status, the presence of tumor-infiltrating lymphocytes (TIL), lymphocytosis, and neutrophil-to-lymphocyte ratio (NLR) in metastatic gastric cancer patients treated with a chemotherapy doublet in the first-line setting. Other stratification factors were sex, age, Eastern Cooperative Oncology Group performance status, adjuvant/neoadjuvant chemotherapy, metastatic sites, and histotype. RESULTS: One hundred three patients were eligible for analysis. Defective MMR was found in 15 patients (14 %), TILs were found in 18 patients (17 %), lymphocytosis was found in 24 patients (23 %), and high NLR was found in 75 patients (72 %). Significant correlations were found between defective MMR and TIL positivity (p = 0.0004), between defective MMR and lymphocytosis (p = 0.0062), between defective MMR and low NLR (p = 0.000069), and between TIL positivity and lymphocytosis (p = 0.000147). All factors had a statistically significant impact on overall survival, although on multivariate analysis only defective MMR (p = 0.0001) and TIL positivity (p = 0.0192) maintained their independent prognostic role. Similar results were observed for progression-free survival, with defective MMR (p = 0.0001) and TIL positivity (p = 0.0195) maintaining their prognostic role on multivariate analysis. CONCLUSIONS: Our analysis confirms the favorable prognosis of metastatic gastric cancer patients with a defective MMR system and suggests that expression of TILs might also be linked to better outcome. Because of the correlation between defective MMR status and measures of immune system activity, this group of patients would be the best candidates for novel immunotherapy-based therapies.

Interplay Between SIRT-3, Metabolism and Its Tumor Suppressor Role in Hepatocellular Carcinoma.

Sirtuins (SIRT), first described as nicotinamide adenine dinucleotide (NAD+)-dependent type III histone deacetylases, are produced by cells to support in the defense against chronic stress conditions such as metabolic syndromes, neurodegeneration, and cancer. SIRT-3 is one of the most studied members of the mitochondrial sirtuins family. In particular, its involvement in metabolic diseases and its dual role in cancer have been described. In the present review, based on the evidence of SIRT-3 involvement in metabolic dysfunctions, we aimed to provide an insight into the multifaceted role of SIRT-3 in many solid and hematological tumors with a particular focus on hepatocellular carcinoma (HCC). SIRT-3 regulatory effect and involvement in metabolism dysfunctions may have strong implications in HCC development and treatment. Research literature widely reports the relationship between metabolic disorders and HCC development. This evidence suggests a putative bridge role of SIRT-3 between metabolic diseases and HCC. However, further studies are necessary to demonstrate such interconnection.

Efficacy of sorafenib in BRAF-mutated non-small-cell lung cancer (NSCLC) and no response in synchronous BRAF wild type-hepatocellular carcinoma: a case report.

BACKGROUND: Sorafenib is a multi-targeted kinase inhibitor with a demonstrated activity in renal cell carcinoma (RCC) and hepatocellular carcinoma (HCC), and it is currently used for the treatment of these pathologies. Ongoing clinical trials are studying its activity in other malignancies, such as non-small-cell lung cancer (NSCLC). However, no biological marker is known to define either the sensitivity or resistance to the drug. CASE PRESENTATION: Here we report a case of a patient with two synchronous tumors, HCC and NSCLC, with metastases in the contralateral lung and bone. The patient was treated with gemcitabine as first line, with a resulting progressive disease after two months, and then with sorafenib at standard dosage in the second line setting. After 6 months of treatment CT scan showed a partial response in the primary lesion of the lung, complete response of the metastasis in the contralateral lung, and stability of HCC. The patient had progression in the lung, liver and bone after 13 months of therapy. A molecular characterization of NSCLC and HCC lesions was performed, revealing a BRAF exon 11 mutation (G469V) only in NSCLC. We hypothesize that the response observed in NSCLC lesions could be due to the presence of BRAF mutation, and that this alteration could be responsible in determining sorafenib sensitivity. CONCLUSIONS: Results observed in this case encourage further research on the activity of sorafenib in both HCC and NSCLC, based on the presence of BRAF mutation. This could lead to a selection of HCC patients to be treated with this drug, and could help identify a novel treatment strategy for BRAF-mutated NSCLC patients.

Prospective study of a molecular selection profile for RAS wild type colorectal cancer patients receiving irinotecan-cetuximab.

BACKGROUND: The aim of our study was to evaluate whether a panel of biomarkers, prospectively analysed might be able to predict patients' clinical outcome more accurately than RAS status alone. METHODS: K-RAS (exons 2, 3, 4) wild type colorectal cancer patients, candidates to second/third-line cetuximab with chemotherapy were prospectively allocated into 2 groups on the basis of their profile: favourable (BRAF and PIK3CA exon 20 wild type, EGFR GCN ≥ 2.6, HER-3 Rajkumar score ≤ 8, IGF-1 immunostaining < 2) or unfavourable (any of the previous markers altered or mutated). After the introduction of N-RAS status (exons 2, 3, 4) only RAS wild type patients were considered eligible. Primary aim was response rate (RR). To detect a difference in terms of RR among patients with an unfavourable profile (estimated around 25%) and patients with a favourable profile (estimated around 60%), with a probability alpha of 0.05 and beta of 0.05, required sample size was 46 patients. Secondary endpoints were progression free survival (PFS) and overall survival (OS). RESULTS: Forty-six patients were enrolled. Seventeen patients (37%) were allocated to the favourable and 29 patients (63%) to the unfavourable profile. RR in the favourable and unfavourable group was 11/17 (65%) and 2/29 (7%) (p = 0.007) respectively. The favourable group also showed an improved PFS (8 months vs. 3 months, p < 0.0001) and OS (15 months vs. 6 months, p < 0.0001). CONCLUSIONS: Our results suggest that prospective selection of optimal candidates for cetuximab treatment is feasible and may be able to improve clinical outcome.

[Treatment of pancreatic cancer. Actuality and perspective]. / Trattamento del carcinoma del pancreas. Attualità e prospettive.

Pancreatic ductal adenocarcinoma (PDAC) is still one of the deadliest solid malignancies, with an extremely poor prognosis, with a 1-year survival rate of approximately 20%. Low survival rates of PDAC mainly derive from late diagnosis, with only a minority of patients amenable to surgery, as well as high rates of relapse and lack of effective treatments for advanced disease stages. As a result, there is an urgent need for the development of new effective therapies. At present, the greatest step towards an improvement of treatment has been made with the introduction of two combination chemotherapy regimens, namely FOLFIRINOX (folinic acid, 5-fluorouracil, irinotecan and oxaliplatin) and gemcitabine/nab-paclitaxel. However, current research is also taking a multidirectional approach aiming at developing new treatment options, such as the use of agents targeting the oncogenic network signaling of KRAS or the extracellular matrix, as well as immune therapies.

VEGF and VEGFR genotyping in the prediction of clinical outcome for HCC patients receiving sorafenib: the ALICE-1 study.

Although new treatment modalities changed the global approach to hepatocellular carcinoma (HCC), this disease still represents a medical challenge. Currently, the therapeutic stronghold is sorafenib, a tyrosine kinase inhibitor (TKI) directed against the vascular endothelial growth factor (VEGF) family. Previous observations suggested that polymorphisms of VEGF and its receptor (VEGFR) genes may regulate angiogenesis and lymphangiogenesis and thus tumour growth control. The aim of our study was to evaluate the role of VEGF and VEGFR polymorphisms in determining the clinical outcome of HCC patients receiving sorafenib. From a multicentre experience 148 samples (tumour or blood samples) of HCC patients receiving sorafenib were tested for VEGF-A, VEGF-C and VEGFR-1,2,3 single nucleotide polymorphisms (SNPs). Patients' progression-free survival (PFS) and overall survival (OS) were analysed. At univariate analysis VEGF-A alleles C of rs25648, T of rs833061, C of rs699947, C of rs2010963, VEGF-C alleles T of rs4604006, G of rs664393, VEGFR-2 alleles C of rs2071559, C of rs2305948 were significant predictors of PFS and OS. At multivariate analysis rs2010963, rs4604006 and BCLC (Barcelona Clinic Liver Cancer) stage resulted to be independent factors influencing PFS and OS. Once prospectively validated, the analysis of VEGF and VEGFR SNPs may represent a clinical tool to better identify HCC patients more likely to benefit from sorafenib. On the other hand, the availability of more accurate predictive factors could help avoiding unnecessary toxicities to potentially resistant patients who may be optimal candidates for different treatments interfering with other tumour molecular pathways.

The role of LDH serum levels in predicting global outcome in HCC patients treated with sorafenib: implications for clinical management.

BACKGROUND: In many tumour types serumlactate dehydrogenase (LDH) levels proved to represent an indirect marker of tumour hypoxia, neo-angiogenesis and worse prognosis. As we previously reported LDH is an important predictive factor in hepatocellular carcinoma (HCC) patients undergoing transarterial chemoembolization (TACE). Sorafenib represents the therapeutic stronghold in advanced HCC patients. As a tyrosine kinase inhibitor (TKI) mainly directed against the angiogenetic pathway, the correlation of sorafenib administration with markers of hypoxia could be an important tool in patients management. Aim of our analysis was to evaluate the role of LDH pre-treatment levels and its variation during treatment in HCC patients receiving sorafenib. METHODS: 78 patients were available for our analysis. For all patients LDH values were collected within one month before the start of treatment and after the end of therapy. For study purposes we divided our patients into two groups, according to LDH pre-treatment levels, cut-off levels was determined with ROC curve analysis. Patients were, also, classified according to the variation in LDH serum levels pre- and post-treatment (increased vs decreased). RESULTS: Patients proved homogeneous for all clinical characteristics analyzed. In patients with LDH values under the cut-off median progression free survival (PFS) was 6.7 months, whereas it was 1.9 months in patients above the cut-off (p = 0.0002). Accordingly median overall survival (OS) was 13.2 months and 4.9 months (p = 0.0006). In patients with decreased LDH values after treatment median PFS was 6.8 months, and median OS was 21.0 months, whereas PFS was 2.9 months and OS 8.6 months in patients with increased LDH levels (PFS: p = 0.0087; OS: p = 0.0035). CONCLUSIONS: In our experience, LDH seemed able to predict clinical outcome in terms of PFS and OS for HCC patients treated with sorafenib. Given the correlation between LDH levels and tumour angiogenesis we can speculate that patients with high LDH pretreatment levels may be optimal candidates for other emerging therapeutic agents or strategies targeting different molecular pathways.

Selected news from the 2014 Genitourinary Cancers Symposium: translating novel strategies into clinical practice.

2014 Genitourinary Cancers Symposium San Francisco, CA, USA, 30 January-1 February 2014 The American Society of Clinical Oncology symposium dedicated to genitourinary tumors represents an unmissable opportunity for the whole oncology community with a special interest in the diagnosis and treatment of genitorurinary tract malignancies, in particular kidney and prostate tumors. The 2014 Genitourinary Cancers Symposium focused attention on the need to find a personalized therapy for metastatic renal cell carcinoma and castration-resistant prostate cancer patients. The development of biomarkers for tumor response and/or resistance will represent a major step in this context and has been the focus of several researches at the symposium.

The role of micro-RNAs in hepatocellular carcinoma: from molecular biology to treatment.

Hepatocellular carcinoma (HCC) is the fifth most common cancer worldwide and the third leading cause of cancer deaths. microRNAs (miRNAs) are evolutionary conserved small non-coding RNA that negatively regulate gene expression and protein translation. Recent evidences have shown that they are involved in many biological processes, from development and cell-cycle regulation to apoptosis. miRNAs can behave as tumor suppressor or promoter of oncogenesis depending on the cellular function of their targets. Moreover, they are frequently dysregulated in HCC. In this review we summarize the latest findings of miRNAs regulation in HCC and their role as potentially diagnostic and prognostic biomarkers for HCC. We highlight development of miRNAs as potential therapeutic targets for HCC.

Exploring external validity of chemotherapy for pancreatic ductal adenocarcinoma in real life.

INTRODUCTION: Cisplatin, nab-paclitaxel, capecitabine, and gemcitabine (PAXG) regimen activity was assessed in a single institution phase II trial (PACT-19) on pancreatic ductal adenocarcinoma (PDAC). The PACT-31 study explored the external validity of PACT-19 results. MATERIALS AND METHODS: Patients aged ≥18 and ≤75 years with KPS ≥70, and PDAC diagnosis receiving PAXG in the participating institutions were eligible and categorized as follows: A) PACT-19; B) PACT-31-HSR; C) PACT-31-non-HSR. With a sample of 175 patients, assuming a target 1-year overall survival of 60 % for metastatic and of 80 % for non-metastatic patients, the trial will be considered successful with the 1-year OS falling into the 95 % CI. RESULTS: Data from 68 PACT-19 and 168 PACT-31 patients were retrieved. After 124 events, 1yOS was 52.5 % (95 %CI: 44.6-60.4 %) for metastatic and 80.5 % (95 %CI: 71.9-89.1 %) for non-metastatic patients. Survival overlapped between PACT-19 and PACT-31-HSR (median 17.6 and 17.4 months, p = 0.21) and was significantly shorter in PACT-31-non-HSR (median 11.3 months; p = 0.03). Differences of dose-intensity, use of maintenance therapy, and treatment after progression between PACT-31-HSR and non-HSR were evidenced. DISCUSSION: PACT-19 results have external validity. The outcome difference between HSR and non-HSR centers endorses the need of creating a hub-and-spoke network aimed at sharing the expertise on rare-diseases.

Role of ß4 integrin in HER-3-negative, K-RAS wild-type metastatic colorectal tumors receiving cetuximab.

AIMS: Altered α6ß4 integrin expression has been demonstrated in HER-3-negative tumors and may be responsible for anti-HER treatment resistance. The current study aimed to evaluate the interaction between polymorphisms of α6 and ß4 integrins and clinical outcome in HER-3-negative, K-RAS wild-type colorectal cancer patients receiving cetuximab. PATIENTS & METHODS: K-RAS analysis was performed via direct sequencing, HER-3 was evaluated by immunohistochemistry and genotyping of α6 and ß4 integrins was performed by real-time PCR. RESULTS: An univariate analysis, the ß4 rs8669, rs871443 and rs9367 polymorphisms correlated with progression-free and overall survival. On multivariate analysis, only the ß4 rs8669 maintained an independent role in influencing progression-free survival. CONCLUSION: We believe that ß4 rs8669 genotyping may help to identify a subgroup of HER-3-negative, K-RAS wild-type colorectal cancer patients who are more likely to benefit from anti-EGFR treatment. Our findings could also be relevant in planning future trials testing treatment strategies against the integrin-activated molecular pathways.

Survival trends over 20 years in patients with advanced cholangiocarcinoma: Results from a national retrospective analysis of 922 cases in Italy.

Cholangiocarcinoma is a rare group of tumors that involve the hepatic biliary tree. Prognosis for patients with cholangiocarcinoma remains dismal. Herein, we present survival trends over a long time period spanning almost 20 years in patients with advanced cholangiocarcinoma receiving systemic chemotherapy. We retrospectively analyzed a large multicenter dataset of cholangiocarcinoma outpatients evaluated in 14 centers within the Cholangiocarcinoma Italian Group Onlus (Gruppo Italiano Colangiocarcinoma Onlus, G.I.C.O.) between 2000 and 2017 (first-line), and 2002 and 2017 (second-line). Three time periods were considered: 2000-2009, 2010-2013, and 2014-2017. A total of 922 patients (51.19% male) with cholangiocarcinoma undergoing first-line therapy were evaluated. The median durations of follow-up for progression-free survival (PFS) and overall survival (OS) were 37 and 57 months, respectively. PFS at 12 months in the three periods of starting first-line therapy was similar, ranging from 11.71% to 15.25%. OS at 12 months progressively improved (38.30%, 44.61% and 49.52%, respectively), although the differences were not statistically significant after adjusting for age, disease status, and primary tumor site. A total of 410 patients (48.5% male) underwent second-line chemotherapy. The median durations of follow-up for PFS and OS were 47.6 and 41.90 months, respectively. An OS of 24.3%, 32.3%, and 33.1% was observed in 2002-2009, 2010-2013, and 2014-2017, respectively. Despite incremental benefits across years, our clinical experience confirms that modest overall advances have been achieved with first- and second-line chemotherapy in advanced cholangiocarcinoma. Efforts should focus on the identification of patients who derive the greatest benefit from treatment.

Phosphorylated AKT and MAPK expression in primary tumours and in corresponding metastases and clinical outcome in colorectal cancer patients receiving irinotecan-cetuximab.

BACKGROUND: Clinical observations suggested that a non negligible proportion of patients, ranging from 40% to 70%, does not seem to benefit from the use of anti-EGFR targeted antibodies even in the absence of a mutation of the K- RAS gene. The EGFR pathway activation via the Ras-Raf-MAP-kinase and the protein-serine/threonine kinase AKT could determine resistance to anti-EGFR treatment. METHODS: We tested the interaction between phosphorylated AKT and MAPK expression in colorectal tumours and corresponding metastases and global outcome in K-RAS wild type patients receiving irinotecan-cetuximab. RESULTS: Seventy-two patients with histologically proven metastatic colorectal cancer, treated with Irinotecan and Cetuximab based chemotherapy, were eligible for our analysis.In metastases pAKT correlated with RR (9% vs. 58%, p = 0.004), PFS (2.3 months vs. 9.2 months p < 0.0001) and OS (6.1 months vs. 26.7 months p < 0.0001) and pMAPK correlated with RR (10% vs. 47%, p = 0.002), PFS (2.3 months vs. 8.6 months p < 0.0001) and OS (7.8 months vs. 26 months p = 0.0004). At multivariate analysis pAKT and pMAPK in metastases were able to independently predict PFS. pAKT in metastases independently correlated with RR as well DISCUSSION: pAKT and pMAPK expression in metastases may modulate the activity of EGFR-targeted antibodies. We could speculate that in patients with pAKT and pMAPK metastases expression targeting these factors may be crucial.

Selecting the best treatment for an individual patient.

Several factors concur in determining outcome for locally advanced gastric cancer patients. Shockingly, geographic origin of the patient seems to play a major role. In Eastern countries, the high level of surgery that can be expected grants a high percentage of success in a strategy that employs surgery as immediate treatment followed by adjuvant chemotherapy, mainly based on oral fluoropyrimidines (S-1 or Capecitabine), with satisfactory results. In Western countries, the expertise of the surgeon maintains its role as predictor of high likelihood of cure. Indeed, patients treated with standard D2 lymph node dissection have a significantly better survival than those who do not obtain the same kind of treatment. For patients who underwent a suboptimal resection (less than a D1) the classical indication is for a combined adjuvant chemoradiotherapy. In patients who obtain a good surgical outcome, the benefit of the addition of adjuvant chemotherapy is still debatable: the gain in survival seems to be small (around 8 % at 5 years) and with noticeable toxicities (usually with dismal compliance for patients treated). On this basis, neoadjuvant treatment is a promising option even if there is a general lack of conclusive data regarding which is the best regimen to use. Even with the limitation of a small number of studies (with difficulties in enrollment), neoadjuvant chemotherapy is usually feasible, allows for a greater chance of receiving chemotherapy at all, and opens the possibility of a downstaging and downsizing of the tumor, allowing an easier surgery. Regarding this strategy preliminary results have also been presented about the addition of monoclonal antibodies. For example, in the TOGA trial, a significant benefit in terms of overall survival, response rate, and progression free survival was observed also for patients with locally advanced gastric cancer and not just for the metastatic ones. In the AVAGAST trial also, the addition of Bevacizumab failed to determine a significant improvement in the primary outcome, overall survival, for patients treated with the combination, but in the subgroup analysis, patients with locally advanced gastric cancer had a significantly better overall survival and response rate. This data was the basis for the newest neoadjuvant trial, of Cunningham et al., the MAGIC2 trial, with the peri-operative use of ECX+Bevacizumab. Finally, an increasing interest in the use of hyperthermic intraperitoneal chemotherapy in other types of solid tumors (including those of the gastrointestinal tract such as colon cancer) has led to evaluate this treatment modality in gastric cancer patients with peritoneal involvement. It should be noted that it is still to be considered an experimental approach, even though it would be intriguing to evaluate if a particular subset of patients, those who are more likely to develop peritoneal metastasis, may benefit from this technique in the adjuvant setting. It should be considered that other than histologic subtype (diffuse vs intestinal) there seems to be a series of polymorphisms of genes usually involved in cell interaction and migration that can explain a different metastatic pattern in resected patients. Further research on these determinants of metastatic spread could be used to select those patients who may benefit from HIPEC and those who may benefit from standard adjuvant or that gain no benefit at all.