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Summary Background Preclinical data have suggested a synergistic effect of cetuximab combined with gemcitabine and cisplatin and clinical data have shown a substantial improvement in response and survival when gemcitabine is combined with a platinum analogue compared with gemcitabine alone. The aim of this study was to assess the activity and feasibility of a combination of cetuximab with gemcitabine and cisplatin compared with use of gemcitabine and cisplatin alone for the treatment of advanced pancreatic cancer. Methods In a multicentre, randomised phase II trial, 84 patients with advanced pancreatic cancer were randomly assigned to either 250 mg/m 2 cetuximab weekly, after a loading dose of 400 mg/m 2 , plus 1000 mg/m 2 gemcitabine and 35 mg/m 2 cisplatin on days 1 and 8 of a 21-day cycle or to the same chemotherapeutic regimen without cetuximab. The primary endpoint was objective response (defined as the proportion of patients whose best response was either partial response or complete response). Secondary endpoints included disease control (defined as the proportion of patients whose best response was either partial response, complete response, or stable disease), progression-free survival, and overall survival. All assessments of response at each site were done blindly by a local experienced radiologist who was not directly involved in the trial. Responses were measured according to an intention-to-treat analysis. This trial is registered with the Clinical Trial registry, number NCT00536614. Findings 29 men and 13 women were randomly assigned to cetuximab plus gemcitabine and cisplatin (median age 61 years [range 38–78]) and 22 men and 20 women were randomly assigned to gemcitabine and cisplatin (median age 64 years [range 40–76]). Seven of 40 (17·5%) patients had an objective response in the cetuximab group (95% CI 7·3–32·8) and five of 41 (12·2%) patients had an objective response in the non-cetuximab group (95% CI 4·1–26·2). No significant difference was noted between the groups both for objective response (5·3% higher in the cetuximab group [95% CI −16·5 to 27·1]; χ 2 test=0·360; p=0·549) or for disease control (3·5% higher in the non-cetuximab group [−34·0% to 27·0%]; 0·446; p=0·504). Overall median follow-up was 11·8 months (range 2·5–18·5). No significant differences between the groups were noted in median progression-free survival (hazard ratio 0·96, 95% CI 0·60–1·52, p=0·847) or in median overall survival (0·91, 0·54–1·55, p=0·739): median progression-free survival was 3·4 months (95% CI 2·4–5·1) in the cetuximab group and 4·2 months (2·6–5·4) in the non-cetuximab group; median overall survival was 7·5 months (5·1–8·8) and 7·8 months (5·3–15·0), respectively. 33 patients from both groups had at least one grade 3–4 toxic effect. Interpretation The addition of cetuximab to a combination of gemcitabine and cisplatin does not increase response or survival for patients with advanced pancreatic cancer. Although toxic effects were not increased by cetuximab, this combination should not be further assessed in phase III trials.

To evaluate prognostic impact of maspin expression in patients with resected non-small cell lung cancer (NSCLC).From 1996 to 2001, 439 patients underwent radical surgery for NSCLC at the Polytechnic University of the Marche Region. Maspin expression was detected as cytoplasmic and nuclear staining of neoplastic cells. For cytoplasmic staining, cases were classified as negative, low positive, and high positive. In positive cases, intensity of staining was also considered and scored. A similar classification was used for nuclear staining, but intensity was not considered.The analysis showed that smoking history, pathologic stage of disease, N status, histologic grading, sex, and Eastern Cooperative Oncology Group performance status had a prognostic impact on overall survival (OS). Expression of maspin was also found to be an independent prognostic factor. A statistically significant longer OS was seen in patients with higher compared with lower expression of nuclear maspin, and poorer OS was present in patients with a higher intensity of cytoplasmic staining. Nuclear expression of maspin was also found to be an independent prognostic factor at multivariate analysis.Results suggest that overexpression of maspin correlates with favorable prognosis in NSCLC. and may be a useful clinical marker.

To verify whether epidermal growth factor receptor (EGFR) status could be considered a prognostic factor and assessment of it an effective tool for planning therapy in patients with non-small cell lung cancer (NSCLC).From 1996 to 2001, 439 patients underwent radical surgery for NSCLC at the Polytechnic University of the Marche Region. EGFR expression was detected as membranous and/or cytoplasmic staining of neoplastic cells with various intensity and was considered positive when > or = 1% of the tumor cells had membranous staining.Samples from 423 patients were available for EGFR analysis. EGFR expression and a stronger intensity of staining were associated with a trend for a worse prognosis in the analysis of all of the patients. The subgroup analysis showed no prognostic significance in stages I and II but a significantly longer survival in patients with advanced disease (stage III and particularly N2) overexpressing EGFR.The results of our study, showing a significantly longer survival in patients with advanced disease (stage III, particularly N2) overexpressing EGFR, present a new perspective, both for prognostic evaluation of patients with radically resected NSCLC and for the management of adjuvant treatment also employing targeted therapy.

Background & Aims Hospitalization is associated with inadequate colon cleansing before colonoscopy. We aimed to identify factors associated to inadequate colon cleansing among inpatients, and to derive and validate a model to identify inpatients with inadequate cleansing. Methods We performed a prospective observational study at 12 hospitals in Italy. Consecutive adult inpatients scheduled for colonoscopy for any indication were enrolled from February through May 2019 (derivation cohort, n = 1016) and from June through August 2019 (validation cohort, n = 508). Inadequate cleansing was defined as Boston bowel preparation scale scores below 2 in any colon segment. We performed multivariate logistic regression to identify factors associated with inadequate cleansing. Results In the combined cohorts, 1032 patients (68%) had adequate colon cleansing. Physicians’ meetings to optimize bowel preparation (odds ratio [OR], 0.42; 95% CI, 0.27–0.65), written and oral instructions to patients (OR, 0.48; 95% CI, 0.36–0.65), admission to gastroenterology unit (OR, 0.71; 95% CI, 0.51–0.98), split-dose regimens (OR, 0.27; 95% CI, 0.20–0.35), a 1-liter polyethylene glycol-based bowel purge (OR, 0.39; 95% CI, 0.23—0.65), and 75% or more intake of bowel preparation (OR, 0.09; 95% CI, 0.05–0.15) significantly reduced odds of inadequate colon cleansing. Alternatively, bedridden status (OR, 2.14; 95% CI, 1.55–2.98), constipation (OR, 2.16; 95% CI, 1.55–3.0), diabetes mellitus (OR, 1.61; 95% CI, 1.18–2.20), use of anti-psychotic drugs (OR, 3.26; 95% CI, 1.62–6.56), and 7 or more days of hospitalization (OR, 1.02; 95% CI, 1.00–1.04) increased risk of inadequate colon cleansing. We developed a model to identify patients with inadequate cleaning using data from patients in the derivation cohort and tested it in the validation cohort. Calibration values were P = .218 for the discrimination cohort and P = .232 for the validation cohort. Discrimination values were c-statistic, 0.78 (95% CI, 0.74–0.81) for the discrimination cohort and c-statistic, 0.73 (95% CI, 0.69–0.78) for the validation cohort. We developed app for use by clinicians. Conclusions In a prospective observational study, we identified setting-, patient- and preparation-related factors that affect colon cleansing among inpatients. We derived and validated a model to identify patients with inadequate preparation and developed an app for clinicians. ClinicalTrials.gov no: NCT03925506

We analysed the expression of activated (phosphorylated) Akt and MAPK in 98 cases of paired primary colorectal tumours and metastases with the aim to define better the epidermal growth factor receptor (EGFR)-related molecular profile of colorectal cancer as a tool for treatment selection. Among 47 (48%) EGFR-negative primary tumours, 35 cases (74%) were positive for phosphorylated Akt and MAPK. Among 51 (52%) EGFR-positive primary colorectal cancers, 13 (25%) cases were negative for phosphorylated Akt and 15 (29%) were negative for phosphorylated MAPK. In EGFR-negative metastases (56 cases, 55%), phosphorylated Akt was expressed in 41 (73%) and phosphorylated MAPK was expressed in 36 (64%) samples, whereas in EGFR-positive metastases, phosphorylated Akt and MAPK were negative in 14 (31%) and in 10 (22%) cases, respectively. Phosphorylated Akt expression in primary colorectal tumours changed from positive to negative in 16 (16%) paired metastases and from negative to positive in 13 (13%) related metastatic sites. Phosphorylated MAPK expression in primary tumours changed from positive to negative in 13 (13%) paired metastases and from negative to positive in 12 (12%) related metastatic sites. Our findings suggest that phosphorylated Akt and MAPK status in primary tumours does not correlate with Akt and MAPK status in corresponding metastases. EGFR downstream signalling pathway can be overactivated even in the absence of EGFR expression in a considerable proportion of patients.

A phase Ib/II trial was performed to evaluate safety, tolerability, recommended dose (RD) and efficacy of F16-IL2, a recombinant antibody-cytokine fusion protein, in combination with doxorubicin in patients with solid tumors (phase Ib) and metastatic breast cancer (phase II). Six patient cohorts with progressive solid tumors (n = 19) received escalating doses of F16-IL2 [5-25 Million International Units (MIU) of IL2 equivalent dose] in combination with escalating doses of doxorubicin (0-25 mg/m(2)) on day 1, 8 and 15 every 4 weeks. Subsequently, patients with metastatic breast cancer (n = 10) received the drug combination at the RD. Clinical data and laboratory findings were analyzed for safety, tolerability, and activity. F16-IL2 could be administered up to 25 MIU, in combination with the RD of doxorubicin (25 mg/m(2)). No human anti-fusion protein antibodies (HAFA) response was detected. Pharmacokinetics of F16-IL2 was dose-dependent over the tested range, with half-lives of ca. 13 and ca. 8 hours for cohorts dosed at lower and higher levels, respectively. Toxicities were controllable and reversible, with no combination treatment-related death. After 8 weeks, 57% and 67% disease control rates were observed for Phase I and II, respectively (decreasing to 43% and 33% after 12 weeks), considering 14 and 9 patients evaluable for efficacy. One patient experienced a long lasting partial response (45 weeks), still on-going at exit of study. F16-IL2 can be safely and repeatedly administered at the RD of 25 MIU in combination with 25 mg/m(2) doxorubicin; its safety and activity are currently being investigated in combination with other chemotherapeutics, in order to establish optimal therapy settings.

Rossana Berardi, Matteo Santoni, Francesca Morgese, Zelmira Ballatore, Agnese Savini, Azzurra Onofri, Paola Mazzanti, Mirco Pistelli, Chiara Pierantoni, Mariagrazia De Lisa, Miriam Caramanti, Silvia Pagliaretta, Chiara Pellei, Stefano CascinuMedical Oncology Unit, Universita Politecnica delle Marche, Azienda Ospedaliero-Universitaria Ospedali Riuniti Umberto I – GM Lancisi – G Salesi, Ancona, ItalyAbstract: In the last decade, better understanding of the role of epidermal growth factor receptor in the pathogenesis and progression of non-small cell lung cancer has led to a revolution in the work-up of these neoplasms. Tyrosine kinase inhibitors, such as erlotinib and gefitinib, have been approved for the treatment of non-small cell lung cancer, demonstrating an improvement in progression-free and overall survival, particularly in patients harboring activating EGFR mutations. Nevertheless, despite initial responses and long-lasting remissions, resistance to tyrosine kinase inhibitors invariably develops, most commonly due to the emergence of secondary T790M mutations or to the amplification of mesenchymal–epithelial transition factor (c-Met), which inevitably leads to treatment failure. Several clinical studies are ongoing (http://www.clinicaltrials.gov/), aimed to evaluate the efficacy and toxicity of combined approaches and to develop novel irreversible or multitargeted tyrosine kinase inhibitors and mutant-selective inhibitors to overcome such resistance. This review is an overview of ongoing Phase I, II, and III trials of novel small molecule epidermal growth factor receptor inhibitors and combinations in non-small cell lung cancer patients.Keywords: clinical trials, combined targeted therapy, epidermal growth factor receptor, non-small cell lung cancer, novel targeted agents, tyrosine kinase inhibitors

Cardiotoxicity is a common complication of many anti-cancer agents and it remains a major limitation, strongly impacting the quality of life and the overall survival, regardless of the oncologic prognosis. Cardiotoxicity may occur during or shortly after treatment (within days or weeks), or it may become evident months, and sometimes years, after completion of chemotherapy. Cardiotoxicity associated with cancer therapies can range from asymptomatic subclinical abnormalities, including electrocardiographic changes and temporary left ventricular ejection fraction decline, to life-threatening events such as congestive heart failure or acute coronary syndromes. The aim of this review is to summarize potential cancer chemotherapeutics-related cardiovascular toxicities in adult cancer-patients and to suggest monitoring and treatment options for each agent, that can serve as a tool in the clinical practice.

Learning Objectives: After completing this course, the reader will be able to: Describe the relationship between HER-3 status and response to treatment with cetuximab and irinotecan in patients with advanced colorectal cancer and EGFR+ wild-type K-RAS mutation in this study.Evaluate data that support using HER-3 status as a predictive factor for anti-EGFR treatment response in patients with colorectal cancer. CME This article is available for continuing medical education credit at CME.TheOncologist.com Preclinical data suggested that, in the presence of human epidermal growth factor receptor (HER)-3–altered activation, colorectal cancer cells may escape anti–epidermal growth factor receptor (EGFR)-mediated cell death. HER-3 overexpression may then represent a key factor for resistance to anti-EGFR antibodies in colorectal cancer. The aim of our analysis was to investigate a possible correlation between HER-3 expression and clinical outcome in wild-type K-RAS advanced colorectal cancer patients receiving cetuximab and irinotecan. We retrospectively analyzed immunoreactivity for HER-3 in wild-type K-RAS advanced colorectal cancer patients receiving irinotecan and cetuximab. Eighty-four advanced wild-type K-RAS colorectal cancer patients were available for HER-3 analysis. Forty patients (48%) had a HER-3− colorectal tumor, whereas the remaining 44 cases (52%) were deemed HER-3+. In patients with HER-3− and HER-3+ tumors, we observed a partial response in 17 (42%) and eight (18%) patients respectively; progressive disease occurred in 11 (35%) and 26 (53%) patients with HER-3− and HER-3+ tumors, respectively (p = .003). The median progression-free survival time was 6.3 months in patients with HER-3− tumors and 2.8 months for those who had HER-3–overexpressing tumors (p < .0001). The median overall survival time was 13.6 months in patients showing HER-3− tumors and 10.5 months for those who had HER-3–expressing tumors (p = .01). HER-3 proved to be a predictive factor for clinical outcome in wild-type K-RAS colorectal cancer patients treated with cetuximab. Combined HER-3 and K-RAS analysis may represent an effective strategy for better selection of responding colorectal cancer patients.

More data about TACE and pTACE seem necessary to better define the global treatment strategy for HCC. Aim of our analysis was to evaluate the role of TACE, either with lipiodol (traditional) or drug-eluting microspheres in terms of response rate (RR), time to progression (TTP), overall survival (OS) and toxicity in HCC. Patients with HCC undergoing traditional TACE or pTACE (either alone or in combination with other treatment options) were eligible One hundred and fifty patients were analyzed. In the global patient population median OS was 46 months for lipiodol TACE and 19 months for pTACE (p < 0.0001), TTP was 30 months versus 16 months for patients receiving TACE or pTACE respectively (p = 0.003). These results were confirmed also among the group of patients who received exclusive TACE or pTACE. Neither RR nor toxicity was different between TACE or pTACE. At multivariate analysis, age, the Okuda stage, type of TACE and number of TACE proved to be independent prognostic factors influencing overall survival. In our experience, lipiodol TACE showed a better OS and TTP over pTACE, without difference in toxicity profile and RR. Among the staging systems analyzed only the Okuda stage seemed able to reliably predict patients outcome.

Seventy to 40% of K-RAS wild type colorectal tumors does not seem to benefit from treatment with antiepidermal growth factor receptor (anti-EGFR) monoclonal antibodies. Recent data suggested that in presence of IGF-1 system, altered activation colorectal cancer cells may escape anti-EGFR mediated cell death. The interaction between IGF-1 expression and K-RAS mutational analysis was tested to verify the ability of IGF-1 to identify a subgroup of patients more likely to benefit from EGFR-targeted antibodies treatment. IGF-1 expression and K-RAS mutational status was assessed in advanced colorectal cancer patients receiving irinotecan/cetuximab. One hundred twelve patients were analyzed. IGF-1 was negative in 30 patients (27%) and overexpressed in the remaining 82 cases (73%). In IGF-1 negative and IGF-1 positive tumors, we observed progressive disease in 9 (30%) and 55 (67%) patients, respectively (p = 0.001). Median progression-free survival was 7.5 mo in patients showing IGF-1 negative tumors and 3 mo for IGF-1 expressing tumors (p = 0.002). Among K-RAS wild type patients, IGF-1 negative and positive tumors showed a partial response to cetuximab-irinotecan in 13 (65%) and 11 (22%) cases, respectively (p = 0.002). Median progression-free survival in IGF-1 negative tumors was 10 mo and 3.2 mo in IGF-1 positive colorectal cancers (p = 0.02). IGF-1 proved to be a possible predictive factor for resistance to anti-EGFR monoclonal antibodies in K-RAS wild type colorectal cancer. Combined IGF-1 and K-RAS analysis may represent an effective strategy for a better selection of responding colorectal cancer patients.

Background K-RAS wild type colorectal tumors show an improved response rate to anti-EGFR monoclonal antibodies. Nevertheless 70% to 40% of these patients still does not seem to benefit from this therapeutic approach. FISH EGFR GCN has been previously demonstrated to correlate with clinical outcome of colorectal cancer treated with anti-EGFR monoclonal antibodies. CISH also seemed able to provide accurate EGFR GCN information with the advantage of a simpler and reproducible technique involving immunohistochemistry and light microscopy. Based on these findings we investigated the correlation between both FISH and CISH EGFR GCN and clinical outcome in K-RAS wild-type colorectal cancer treated with irinotecan-cetuximab. Methods Patients with advanced K-RAS wild-type, colorectal cancer receiving irinotecan-cetuximab after failure of irinotecan-based chemotherapy were eligible. A cut-off value for EGFR GCN of 2.6 and 2.12 for FISH and CISH respectively was derived from ROC curve analysis. Results Forty-four patients were available for analysis. We observed a partial remission in 9 (60%) and 2 (9%) cases with a FISH EGFR GCN ≥ 2.6 and < 2.6 respectively (p = 0.002) and in 10 (36%) and 1 (6%) cases with a CISH EGFR GCN ≥ 2.12 and < 2.12 respectively (p = 0.03). Median TTP was 7.7 and 6.4 months in patients showing increased FISH and CISH EGFR GCN whereas it was 2.9 and 3.1 months in those with low FISH and CISH EGFR GCN (p = 0.04 and 0.02 respectively). Conclusion FISH and CISH EGFR GCN may both represent effective tools for a further patients selection in K-RAS wild-type colorectal cancer treated with cetuximab.

In the past decade the incidence of lung cancer among women has risen, whereas among men it has slightly declined. Important differences in lung cancer have been demonstrated between men and women, although many areas still remain controversial. Some biologic differences may justify the increase in response of women to therapy for lung cancer and can partially explain the improved survival of women compared with men. We extensively reviewed the published scientific literature on this topic in order to investigate the clinical and genetic profiling underlying lung cancer in women and to use this information as a tool for medical therapy.

Made available in DSpace on 2016-08-30T10:50:02Z (GMT). No. of bitstreams: 1 tese_2571_.pdf: 4077431 bytes, checksum: 517ad53c98b0ab96748ccaafb49c2476 (MD5) Previous issue date: 2008-08-12 Esta pesquisa procura identificar as estratégias adotadas pelo município de Vitória/ES para fazer frente ao processo de desprecarização dos vínculos de trabalho dos enfermeiros e médicos das equipes de saúde da família, bem como caracterizar o perfil desses profissionais; analisar as modalidades e as formas de inserção na ESF; analisar o significado dessas mudanças em seu processo de trabalho; e analisar a satisfação desses trabalhadores em relação ao trabalho realizado. Adota uma metodologia de abordagem qualitativa que utiliza o estudo exploratório e documental. Trabalha com dados levantados no período de novembro de 2007 a janeiro de 2008, por meio de entrevistas com os profissionais da Estratégia Saúde da Família. Emprega a técnica de Análise do Discurso do Sujeito Coletivo na tabulação e organização dos dados. Para interpretá-los faz uso da estratégia de Análise de Conteúdo. Observa de forma geral, que o município de Vitória avançou em alguns aspectos relacionados à desprecarização dos vínculos de trabalho, principalmente em relação à realização de concursos públicos, que possibilitaram a efetivação dos trabalhadores da ESF. Também destaca a implantação do Plano de Cargos, Carreiras e Vencimentos para os profissionais da saúde e de ações voltadas para a capacitação e treinamento, bem como para a reorganização da estrutura administrativa da Secretaria de Saúde, que contemplou à área de Gestão do Trabalho. Evidencia o reconhecimento por parte dos profissionais da importância do vínculo institucional como forma de proporcionar maior motivação e segurança, o que, por sua vez, favorece o desenvolvimento do processo de trabalho como um todo, ou seja, os aspectos relacionados ao vínculo com a comunidade, a realização de um trabalho contínuo e a longo prazo e a construção de um projeto profissional coletivo. Conclui que, apesar de existirem várias ações em andamento, estas ainda não conseguiram organizar o processo de trabalho de forma satisfatória. Identifica alguns pontos de estrangulamento, como as Rodas de Educação Permanente, que ainda não conseguiram alcançar seus objetivos, a Mesa de Negociação, totalmente desconhecida pelos profissionais, e a ineficiência de ações voltadas para o desenvolvimento e valorização de pessoal, o que tem influência direta na organização do modelo de atenção à saúde. As questões levantadas indicam a necessidade de maior interação entre os membros das equipes e da ampliação da participação dos trabalhadores nas questões relacionadas ao desenvolvimento de seu processo de trabalho.

Inhibition of the epidermal growth factor receptor (EGFR) represents one of the most important avenues of research and development in cancer therapy. The cutaneous toxicity [papular–pustular eruption (PPE), seborrheic dermatitis-like erythema, diffuse xerosis, inflammatory paronychia, painful fissures on fingers, hair changes] frequently described with EGFR inhibitors (EGFRI) can result in significant physical discomfort and often lead to interruption or dose modification of EGFRI. Therefore, appropriate management of skin toxicity is mandatory to allow adequate drug administration and to improve health-related quality of life and therapy outcomes. Although the mechanism by which inhibition of EGFR leads to skin toxicity is still largely unknown, EGFR is primarily expressed in undifferentiated proliferating basal and suprabasal keratinocytes both in the epidermis and in the outer layers of hair follicle [1]. The activation of EGFR by its ligand EGF regulates normal keratinocytes proliferation, differentiation, migration, and survival in the skin [1]. Tan et al. [2] demonstrated that MAPK activity shows a trend in association with skin toxicity after tyrosine kinase inhibitors administration and they concluded that by giving an inhibitor of MAPK phosphorylation to patients undergoing treatment with EGFR inhibitors, clinicians could control the skin toxicity. It has recently been demonstrated that topical application of green tea polyphenols in rats prevents the UVB-induced oxidative phosphorylation of MAPK [3] and nicotinamide also inhibits the MAPK pathways in cell cultures and in rats [4, 5]. Starting from these data, we report our experience in the management of EGFR skin toxicity using a new therapeutic approach, based on the use of a combined therapy: topical application of a moisturizer cream containing green tea polyphenols twice a day and oral administration of nicotinamide (1 g/die) for 12 weeks. The moisturizer cream containing green tea was applied on face, hands, neck, back, shoulders, arms, and legs, starting when skin toxicity occurred. Topical application of 1% clindamycin gel and/or systemic administration of minocycline 100 mg/die were provided in case of super bacterial infection, until infection resolved completely. Treatment was variably effective on different aspects of skin toxicity: PPE and itching rapidly improved, with a significant reduction of prevalence and clinical severity in treated patients at week 6. Seborrheic dermatitis erythema improved more slowly after 12 weeks of therapy (Figure 1). Paronychia, xerosis, and fissures were less responsive even if they demonstrated a positive trend to the treatment. Finally, all treated patients reported a significant improvement in life quality, which represents one of the most important goals in the control of EGFR-related skin toxicity. To date, no controlled clinical studies investigating treatment options for EGFRI skin toxicity have been fully reported and as a result, evidence-based treatment recommendations are not yet possible. Our experience showed that in a homogeneous and prospective setting, a simple nicotinamide/green tea polyphenols-based therapy is extremely effective in order to improve skin toxicity due to EGFRI and merits further investigation. In addition, evaluation of patient, nursing, and physician education tools is important and may aid in the promotion of prophylactic intervention, early recognition, and best practices in skin toxicity management, thereby maximizing potential clinical benefit from the EGFRI class of agents, reducing the risk of serious infection, and improving patient quality of life.

Purpose NF-kB expression has been shown to be responsible for resistance to antineoplastic agents and it also plays a part in the activation of the epidermal growth factor receptor downstream signaling pathway in colorectal tumors. The aim of our analysis was to investigate a correlation between NF-kB expression, response rate, time to progression, and survival in advanced colorectal cancer patients receiving cetuximab and irinotecan. Patients and Methods We analyzed retrospectively the immunoreactivity for NF-kB in irinotecan-refractory patients receiving cetuximab and irinotecan. Results Seventy-six patients were analyzed. Cetuximab and irinotecan were administered as second-line chemotherapy in 19 patients and after ≥ two lines of chemotherapy in the remaining 57 patients. We observed a partial response (PR) in 16 patients for an overall response rate of 24%. Thirty-two patients (48%) experienced progressive disease; median time to progression (TTP) was 3.6 months and median overall survival was 10.3 months. NF-kB was positive in 46 patients (60%). All main clinical characteristics were well balanced between NF-kB–positive and NF-kB–negative patients. The response rate was 10% (four PRs) versus 48% (12 PRs; P = .0007) in NF-kB–positive and NF-kB–negative tumors, respectively. Median TTP in NF-kB–positive patients was 3 v 6.4 months in the remaining patients (P = .021). Median overall survival was 9.5 v 15.8 months for NF-kB–positive and NF-kB–negative patients, respectively (P = .036) Conclusion The difference in median TTP, overall survival, and response rate seem to confirm that NF-kB may play a crucial role in predicting the efficacy of cetuximab and irinotecan in advanced colorectal tumors.