The Role of Adjuvant Chemotherapy before Osimertinib in Epidermal Growth Factor Receptor Mutant Resected Non-Small Cell Lung Cancer and Communicating It to Patients

Patients with radically resected stage II and III NSCLC are exposed to a high risk of disease recurrence. Thus, adjuvant cisplatin-based chemotherapy is routinely offered to this patient population, although it results in an absolute increase in 5-year survival rate of only 4%. This modest improvement in survival rate makes it challenging to communicate to our patients about the decision to be treated with adjuvant chemotherapy or not. Nowadays, the decision to administer adjuvant chemotherapy or not in resected NSCLC is almost never completely shared with patients because its role is very difficult to explain. The risk-benefit ratio becomes clearly unfavourable in elderly and unfit patients. Recently, the phase III ADAURA trial demonstrated a clinically significant disease-free survival and overall survival benefit with adjuvant osimertinib (with or without adjuvant chemotherapy) versus a placebo in EGFR-mutated stage IB-IIIA resected NSCLC. In this patient population, the decision to administer chemotherapy or not is much more challenging given the great benefit offered by osimertinib alone. Thus, it is time now to improve our communication tools to explain the role of adjuvant chemotherapy to our patients, especially in the EGFR-mutated population, in order to undertake real shared decision making in a clinical context in which the opportunity to administer toxic chemotherapy is debatable and subjective.

New approach to implement cancer patient care: The valutazione percorso rete oncologica campana (ValPeROC)‐experience from an Italian oncology network

OBJECTIVE

The primary goal of the Campania Oncology Network (ROC) was to reduce cancer delay and care fragmentation through the establishment of cancer-specific multidisciplinary oncologic groups (GOMs) and diagnostic and therapeutic assistance paths (PDTAs).

METHODS

Five cancer centres of the ROC, with their own cancer specific GOM, were selected. In our analysis, we have focused on four neoplasms: lung, colon, ovarian and prostate cancers. The median time for pre-GOM and GOM Times was calculated for each tumour site. Univariate and multivariate logistic regressions were performed to individuate risk factors for pre-GOM and GOM Time.

RESULTS

Significant differences were observed for prostate cancer compared to other patients either for pre-GOM or GOM Times. Significant risks were found for ovarian and prostate cancers in pre-GOM time and for prostate cancer in GOM-Time.

CONCLUSIONS

This experience will produce knowledge and data to guide decision-making and to manage more effectively the challenges of fighting cancer in Campania region. The Valutazione Percorso Rete Oncologica Campana (ValPeROC) study evaluates, for the first time, the ROC activity, through the analysis of key performance indices. Pre-GOM and GOM Time represent the quality of the entire regional health system and are useful to define models, which can evaluate the performance of the ROC over time.

Evaluation of the Molecular Landscape in PD-L1 Positive Metastatic NSCLC: Data from Campania, Italy

Background: Immune-checkpoint inhibitors (ICIs) have increased and improved the treatment options for patients with non-oncogene-addicted advanced stage non-small cell lung cancer (NSCLC). However, the role of ICIs in oncogene-addicted advanced stage NSCLC patients is still debated. In this study, in an attempt to fill in the informational gap on the effect of ICIs on other driver mutations, we set out to provide a molecular landscape of clinically relevant oncogenic drivers in programmed death-ligand 1 (PD-L1) positive NSCLC patients. Methods: We retrospectively reviewed data on 167 advanced stage NSCLC PD-L1 positive patients (≥1%) who were referred to our clinic for molecular evaluation of five driver oncogenes, namely, EGFR, KRAS, BRAF, ALK and ROS1. Results: Interestingly, n = 93 (55.7%) patients showed at least one genomic alteration within the tested genes. Furthermore, analyzing a subset of patients with PD-L1 tumor proportion score (TPS) ≥ 50% and concomitant gene alterations (n = 8), we found that n = 3 (37.5%) of these patients feature clinical benefit with ICIs administration, despite the presence of a concomitant KRAS gene alteration. Conclusions: In this study, we provide a molecular landscape of clinically relevant biomarkers in NSCLC PD-L1 positive patients, along with data evidencing the clinical benefit of ICIs in patient NSCLC PD-L1 positive alterations.

The treatment of advanced non-small cell lung cancer harboring KRAS mutation: a new class of drugs for an old target-a narrative review

Background and Objective

The genetic nature of cancer provides the rationale to support the need for molecular diagnosis and patient selection for individualised antineoplastic treatments that are the best in both tolerability and efficacy for each cancer patient, including non-small cell lung cancer (NSCLC) patients. Kirsten rat sarcoma viral oncogene homolog (KRAS) mutations represent the prevalent oncogenic driver in NSCLC, being detected in roughly one-third of cases and KRAS G12C is the most frequent mutation found in approximately 13% of patients.

Methods

This paper gives an overview of the numerous scientific efforts in recent decades aimed at KRAS inhibition.

Key Content and Findings

Sotorasib is the first approved KRAS G12C inhibitor that has been shown to provide a durable clinical benefit in patients with pre-treated NSCLC with KRAS G12C mutation. Together with the development of new targeted drugs, the development of strategies to control resistance mechanisms is one of the major drivers of research that is exploring the use of KRAS inhibitors not only alone, but also in combination with other targeted therapies, chemotherapy and immunotherapy.

Conclusions

This review will describe the major therapeutic developments in KRAS mutation-dependent NSCLC and will analyse future perspectives to maximise benefits for this group of patients.

Chemotherapy plus single/double immunotherapy in the treatment of non-oncogene addicted advanced non-small cell lung cancer: where do we stand and where are we going?

INTRODUCTION

: Chemo-immunotherapy combinations have revolutionized our treatment algorithm with respect to naïve advanced NSCLC, however, given the great number of developed and approved combinations, the question arises as to which combinations provide the best efficacy and safety.

AREAS COVERED

: This review assesses and discusses the available data concerning chemo-immunotherapy combinations in the treatment of naïve advanced NSCLC, as well as presenting the most promising data involving combinations currently under investigation.

EXPERT OPINION

: Pembrolizumab-containing chemo-immunotherapy combinations are associated with the most mature data available and presently represent the standard treatment in clinical practice in naïve advanced NSCLC-affected patients. The nivolumab plus ipilimumab plus short-course chemotherapy combination, more recently approved by regulatory agencies, is an appealing alternative thanks to the reduced rate of grade 3-5 TRAEs and the limited chemotherapy administration. The new chemo-immunotherapy combinations currently under investigation will help us to better identify both the best immune checkpoints to target and the most effective combinations to administer.

The treatment of advanced lung adenocarcinoma with activating EGFR mutations

INTRODUCTION

Lung adenocarcinomas account for approximately 40-50% of all NSCLC (Non-Small Cell Lung Cancer) cases. In addition, lung adenocarcinomas can harbor several different genetic mutations, EGFR (Epidermal Growth Factor Receptor) being the most frequent one, accounting for approximately 5-15% of all the mutations in western patients and for approximately 40-55% in Asian patients; on the other hand, EGFR mutations are uncommon in squamous histology. Approximately 90% of EGFR mutations are represented by exon 19 in-frame deletion and by the L858R exon 21-point mutation, that confer sensitivity to EGFR TKI (Tyrosine Kinase Inhibitors) treatment.

AREAS COVERED

The authors comprehensively review the current state of the art with reference to EGFR+ NSCLC treatment and to discuss the possible future developments.

EXPERT OPINION

Osimertinib must be considered the preferred first-line agent in EGFR+ advanced NSCLC patients thanks to its superior performances. With respect to acquired resistance mechanisms to osimertinib, the currently ongoing clinical trials will surely help us to better understand and tackle them. Globally, we strongly believe that a biomarker-driven sequential treatment algorithm is key in order to provide personalized, effective and durable therapies in the increasingly complex landscape of EGFR+ advanced NSCLC.

Chemotherapy-induced neutropenia and treatment efficacy in advanced non-small-cell lung cancer: a pooled analysis of 6 randomized trials

Background

Chemotherapy-induced neutropenia (CIN) has been demonstrated to be a prognostic factor in several cancer conditions. We previously found a significant prognostic value of CIN on overall survival (OS), in a pooled dataset of patients with advanced non-small-cell lung cancer (NSCLC) receiving first line chemotherapy from 1996 to 2001. However, the prognostic role of CIN in NSCLC is still debated.

Methods

We performed a post hoc analysis pooling data prospectively collected in six randomized phase 3 trials in NSCLC conducted from 2002 to 2016. Patients who never started chemotherapy and those for whom toxicity data were missing were excluded. Neutropenia was categorized on the basis of worst grade during chemotherapy: absent (grade 0), mild (grade 1–2), or severe (grade 3–4). The primary endpoint was OS. Multivariable Cox model was applied for statistical analyses. In the primary analysis, a minimum time (landmark) at 180 days from randomization was applied in order to minimize the time-dependent bias.

Results

Overall, 1529 patients, who received chemotherapy, were eligible; 572 of them (who received 6 cycles of treatment) represented the landmark population. Severe CIN was reported in 143 (25.0%) patients and mild CIN in 135 (23.6%). At multivariable OS analysis, CIN was significantly predictive of prognosis although its prognostic value was entirely driven by severe CIN (hazard ratio [HR] of death 0.71; 95%CI: 0.53–0.95) while it was not evident with mild CIN (HR 1.21; 95%CI: 0.92–1.58). Consistent results were observed in the out-of-landmark group (including 957 patients), where both severe and mild CIN were significantly associated with a reduced risk of death.

Conclusion

The pooled analysis of six large trials of NSCLC treatment shows that CIN occurrence is significantly associated with a longer overall survival, particularly in patients developing severe CIN, confirming our previous findings.

Supplementary Information

The online version contains supplementary material available at 10.1186/s12885-021-08323-4.

Effect on quality of life of cisplatin added to single-agent chemotherapy as first-line treatment for elderly patients with advanced non-small cell lung cancer: Joint analysis of MILES-3 and MILES-4 randomised phase 3 trials

OBJECTIVES

To evaluate the effect on quality of life (QOL) of the addition of cisplatin to single-agent chemotherapy in the treatment of elderly patients with advanced non-small cell lung cancer (NSCLC) enrolled in two parallel phase 3 trials, MILES-3 and MILES-4.

PATIENTS AND METHODS

Advanced NSCLC pts, >70 years old, performance status (PS) 0-1, were eligible. Patients were randomly assigned to chemotherapy without or with cisplatin. EORTC QLQ C30 and LC13 questionnaires were planned at baseline, end of cycle 1 and end of cycle 2 in both trials and were used for joint QOL analysis. Trial-specific data including questionnaires at non-shared time-points were used for additional analyses. Intention-to-treat strategy was applied. Analyses were adjusted for baseline QOL, stage, performance status, gender, age, size of centre, trial, histotype and non-platinum companion drug.

RESULTS

Overall, 458/531 pts (86%) answered baseline questionnaire and missing rates over treatment were slightly higher among patients receiving cisplatin. Mean change in sore mouth after cycle 2 was worse with cisplatin (P = 0.02). The size of differences between arms was in the small-medium range for peripheral neuropathy and alopecia (0.25 and 0.31 after one and 0.28 and 0.36 after two cycles, respectively) and for nausea/vomiting, sore mouth and dysphagia after two cycles (0.26, 0.38 and 0.25, respectively) always in the direction of worsening with cisplatin. Using a 10% change from baseline as clinically relevant threshold to categorize response, there was no significant difference between the arms. Time to deterioration of sore mouth and alopecia, with progression/death as competitive risk, was shorter with cisplatin (HR 1.72 95%CI 1.02-2.89, P = 0.04 and HR 1.84 95%CI 1.09-3.10, P = 0.02, respectively).

CONCLUSION

The addition of cisplatin to single agent chemotherapy worsens sore mouth and alopecia and does not improve any QOL items in elderly patients with advanced NSCLC.

Treatment of advanced non-small cell lung cancer in the elderly

INTRODUCTION

Lung cancer is predominantly a disease that affects the elderly; about 30-40% of lung cancers are diagnosed in patients aged 70 or more. The increasing number of elderly patients over the next decades is generating a new social and health problem; despite that, these patients are underrepresented in clinical trials and undertreated in clinical practice. Areas covered: The main difficulty in treating elderly patients is to maximize the therapy benefits while minimizing the treatment risk. Elderly patients show a vulnerable clinical profile due to the higher prevalence of comorbid disease, higher polypharmacy interactions and aged organ dysfunction that increase the risk of mortality and toxicity with cancer treatments compared to younger patients. Expert commentary: The choice to treat or not to treat elderly patients cannot be taken only on the basis of the chronological age. Thus, the clinical approach should be to select patients who are effectively suitable for treatment having a better individual functional reserve and a better life expectancy. Elderly patients are a heterogeneous population and those who are fit to receive cancer treatment can be treated similarly to younger patients.

Cisplatin-Based First-Line Treatment of Elderly Patients With Advanced Non-Small-Cell Lung Cancer: Joint Analysis of MILES-3 and MILES-4 Phase III Trials

Purpose To test the efficacy of adding cisplatin to first-line treatment for elderly patients with advanced non-small-cell lung cancer (NSCLC) within a combined analysis of two parallel phase III trials, MILES-3 and MILES-4. Patients and Methods Patients with advanced NSCLC who were older than age 70 years with Eastern Cooperative Oncology Group performance status 0 to 1 were randomly assigned to gemcitabine or pemetrexed, without or with cisplatin. In each trial, 382 events were required to detect a hazard ratio (HR) of death of 0.75, with 80% power and two-tailed α of .05. Trials were closed prematurely because of slow accrual, but the joint database allowed us to analyze the efficacy of cisplatin on the basis of intention-to-treat and adjusted by trial, histotype, non-platinum companion drug, stage, performance status, sex, age, and size of the study center. Results From March 2011 to August 2016, 531 patients (MILES-3, 299; MILES-4, 232) were assigned to gemcitabine or pemetrexed without (n = 268) or with cisplatin (n = 263). Median age was 75 years, 79% were male, and 70% had nonsquamous histology. At a median 2-year follow-up, 384 deaths and 448 progression-free survival events were recorded. Overall survival was not significantly prolonged with cisplatin (HR, 0.86; 95% CI, 0.70 to 1.05; P = .14) and global health status score of quality of life was not improved, whereas progression-free survival (HR, 0.76; 95% CI, 0.63 to 0.92; P = .005) and objective response rate (15.5% v 8.5%; P = .02) were significantly better. Significantly more severe hematologic toxicity, fatigue, and anorexia were found with cisplatin. Conclusion The addition of cisplatin to single-agent chemotherapy does not significantly prolong overall survival, and it does not improve global health status score of quality of life in elderly patients with advanced NSCLC.

Lung cancer, elderly and immune checkpoint inhibitors

Lung cancer is predominantly a disease of the elderly with about 50% of diagnoses in patients aged ≥70 years and about 14% in those older than 80. Medical and physiological characteristics of elderly cancer patients make the choice of their better treatment more challenging. Furthermore, aging is accompanied by the so called "immunosenescence" phenomenon, the age-related decline in the immune system that is one of the potential reasons of increase of the incidence and prevalence of most cancers. There is a growing interest in understanding of immunosenescence and how it may correlate with the use of immune checkpoint inhibitors in elderly non-small cell lung cancer (NSCLC) patients. The survival benefit achieved by immunotherapy in all histologies and therapy line settings, added to its manageable toxicity profile, has dramatically changed the scenario of advanced NSCLC treatment. At subgroup analyses of randomized clinical trials, elderly NSCLC population seems to benefit from anti-programmed death-1 (anti-PD-1)/anti-programmed death ligand-1 (anti-PD-L1) agents' treatment. These efficacy data were also confirmed by studies in real-life setting. The key-points of aging and immunosenescence are described, focusing on the role of immune checkpoint inhibitors in elderly NSCLC population.

The Combination of New Immunotherapy and Radiotherapy: A N ew Potential Treatment for Locally Advanced Non-Small Cell Lung Cancer

Lung cancer is the main reason of cancer death worldwide. About 30% of non-small-cell lung cancer (NSCLC) cases are diagnosed with locally advanced disease (stage III). This is a mixed population including patients who have far more extensive and bulky disease than others. Management of these patients continue to be a challenge; frequently, patients have both local recurrence and distant metastases in this stage and the prognosis is very poor with a 5-year overall survival estimated between 3% and 7% for inoperable disease. The standard treatment for these patients is concurrent chemo-radiotherapy (CRT) improving survival when compared to sequential combination as shown in several metanalysis. Recently, immune-therapies, including checkpoint inhibitor, such as monoclonal antibodies against programmed death receptor 1 (PD-1) and programmed death ligand 1 (PD-L1), have shown to enhance survival compared to chemotherapy in patients with advanced NSCLC. The integration of radiotherapy with immunotherapy is a conceptually promising strategy and several preclinical experiments have further developed the rationale for combining them. Radiotherapy has the capacity to overcome a lot of tumor immune escape mechanisms through the liberation of immunogenic private antigens showing a better local control and augmenting the immune response of systemic agents. This manuscript discusses the potential clinical interest for the combination of radiation and immunotherapy in locally advanced NSCLC.

Overcoming Resistance to EGFR Inhibitors in NSCLC

BACKGROUND

The clarification of several molecular pathways underlying the tumorigenesis has led to the development of several targeted drugs that have substantially improved the treatment of Non-Small-Cell Lung Cancer (NSCLC). The Epidermal Growth Factor Receptor (EGFR) is the target of several Tyrosine-Kinase Inhibitors (TKIs), some of them approved for treatment and others currently in clinical development. EGFR-TKIs markedly improve progression-free survival of patients with advanced NSCLC with EGFR mutations compared with chemotherapy.

METHODS

We undertook a structured search of bibliographic databases for peer-reviewed research literature using a focused review question.

RESULTS

Although first- and second-generation agents offer in target population (with EGFR mutations) a substantial improvement of outcomes compared with standard chemotherapy, unfortunately, drug resistance develops after initial benefit, through a variety of mechanisms. Novel- (third) generation EGFR inhibitors have a selective mechanism of action and are currently in advanced clinical development, producing encouraging results in patients with acquired resistance to previous generation agents.

CONCLUSION

The search for new drugs or strategies to overcome the TKI resistance in patients with EGFR mutations is to be considered a priority for the improvement of outcomes in the treatment of advanced NSCLC, and third-generation EGFR inhibitors are the most promising approach to the issue.

Targeted therapies in non-small cell lung cancer: a focus on ALK/ROS1 tyrosine kinase inhibitors

INTRODUCTION

Anaplastic lymphoma kinase (ALK) and ROS1 rearrangements define important molecular subgroups of advanced non-small cell lung cancer (NSCLC). The identification of these genetic driver alterations created new potential for highly active therapeutic interventions. After discovery of ALK rearrangements in NSCLC, it was recognized that these confer sensitivity to ALK inhibition. Areas covered: Crizotinib, the first-in-class ALK/ROS1/MET inhibitor, was initially approved as second-line treatment of ALK-positive advanced NSCLC but after this, it was firmly established as the standard first-line therapy for advanced ALK-positive NSCLC. After initial response to crizotinib, tumors inevitably relapse. Next-generation ALK inhibitors, more potent and brain-penetrable than crizotinib, may be effective in re-inducing remissions when cancers are still addicted to ALK. Ceritinib and alectinib are approved for metastatic ALK positive NSCLC patients, while brigatinib received granted accelerated approval by the United States Food and Drug Administration. Regarding ROS1 rearrangement, to date crizotinib is the only ALK-tyrosine kinase inhibitor receiving indication as treatment of ROS1 positive advanced NSCLC. Expert commentary: Although novel ALK-inhibitors are under clinical investigation compared to crizotinib as front-line treatment for ALK-positive NSCLC, nowadays the current standard first-line therapy for these patients is crizotinib. Further research will clarify the best management of ALK-positive NSCLC, above all who progress on first-line crizotinib.

Resistance to Crizotinib in Advanced Non-Small Cell Lung Cancer (NSCLC) with ALK Rearrangement: Mechanisms, Treatment Strategies and New Targeted Therapies

Non-small cell lung cancers (NSCLCs) harboring anaplastic lymphoma kinase (ALK) rearrangement are generally responsive to treatment with ALK tyrosine kinase inhibitors (TKIs). Crizotinib is the first-in-class TKI approved as front-line or salvage therapy in advanced ALK-rearranged NSCLC. Unfortunately, drug resistance develops after initial benefit, through a variety of mechanisms preserving or not the dominance of ALK signaling in the crizotinib-resistant state. The distinction between patients who preserve ALK dominance (secondary mutations alone or in combination with the number of copy ALK gain) compared to those that have decreased ALK dominance (separate or second oncogenic drivers, with or without concurrent persistence of the original ALK signal) is important in order to overcome resistance. Novel second-generation ALK inhibitors are currently in clinical development with promising results in ALK-rearranged NSCLC, as well as in crizotinib-resistant patients. Among these, ceritinib in the United States was granted by Food and Drug Administration accelerated approval for treatment of patients with ALK-rearranged, metastatic NSCLC with progression disease on or intolerance to crizotinib. Fully understanding of the different mechanisms of resistance to crizotinib will help us to continue to exploit personalized medicine approaches overcoming crizotinib resistance in these patients in the future. This review aims to discuss on strategy overcoming crizotinib-resistance starting from molecular mechanisms of resistance until novel ALK kinase inhibitors in ALK-rearranged NSCLC patients.

Efficacy of the addition of cisplatin to single-agent first-line chemotherapy in elderly patients with advanced non-small cell lung cancer (NSCLC): A joint analysis of the multicenter, randomized phase III MILES-3 and MILES-4 studies

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Background: The role of platinum in first line treatment of elderly patients with advanced NSCLC is still debated. We tested its efficacy in two parallel phase 3 trials. Methods: Advanced NSCLC patients, > 70 years, ECOG performance status 0-1, were eligible. In MILES-3 (started in 2011) patients with any tumor histology were randomly assigned 1:1 to cisplatin/gemcitabine (C 60 mg/m² d1, G 1000mg/m² dd1,8) or gemcitabine (G 1200 mg/m² dd1,8). In MILES-4 (started in 2013 with a factorial design) patients with non-squamous histology were randomly assigned 1:1:1:1 to CG, G, cisplatin/pemetrexed (C 60 mg/m² d1, P 500 mg/m² d1) or pemetrexed (P 500 mg/m² d1). Six cycles were planned. In each trial, to have 80% power in detecting a HR of death 0.75 (corresponding to 3-month prolongation of median survival), with 0.05 two-tailed α, 382 events were required. The two trials were closed prematurely because of slow accrual but a joint analysis allowed to properly perform the final analysis, according to IDMC advice. Analysis was based on intention-to treat and adjusted by possible confounding factors. Results: From Mar 2011 to Aug 2016, 531 patients (MILES-3: 299, MILES-4: 232) were assigned to cisplatin-doublet (n = 263) or single-agent chemotherapy (n = 268). Median age was 75, 79% were male, 70% had non-squamous histology. Median number of cycles was 4 and 3 with and without cisplatin, respectively. With a median follow-up of 2 years, 384 deaths and 448 progression-free survival (PFS) events were reported. With and without cisplatin, median OS was 9.6 vs 7.5 months (HR 0.86, 95% CI: 0.70-1.04, p = 0.14); median PFS was 4.6 vs 3.0 months (HR 0.76, 95% CI: 0.63-0.92, p = 0.005); response rate was 15.5% vs 8.5% (p = 0.02). Significantly more severe hematologic toxicity and fatigue were reported with cisplatin. Conclusions: Although improving PFS and response rate, addition of cisplatin to single-agent chemotherapy does not significantly prolong overall survival of elderly patients with advanced NSCLC. QOL data will be reported separately. Partially supported by AIFA (grant FARM8KAJZK) and Eli Lilly. Clinical trial information: NCT01405586 and NCT01656551.

The safety of second-line treatment options for non-small cell lung cancer

INTRODUCTION

Non-small-cell lung cancer (NSCLC) patients after first-line therapy ultimately suffer progression. At this time, many patients still have a good performance status and can be considered for further active treatment. Two chemotherapeutic agents, docetaxel and pemetrexed (only in non-squamous histology), and the biological drug anti-epidermal growth factor receptor (EGFR) erlotinib, were approved for clinical use in the second-line treatment of NSCLC patients. In the last few years further new second-line therapies have become available in the clinical practice. Areas covered: This review will discuss the adverse events of the pivotal trials ledding to the approval of second-line therapies for the treatment of not oncogene-addicted NSCLC patients. Expert opinion: In recent years, new second-line options for NSCLC are: the anti-EGFR, afatinib (only in squamous NSCLC); the anti-angiogenics, nintedanib (only in lung adenocarcinoma) and ramucirumab, in combination with docetaxel; the immunotherapeutics, nivolumab, pembrolizumab, and atezolizumab. In the second-line approach, the main endpoint of treatment should always be survival, but with great respect for symptoms palliation and preserving patients' quality of life. Therefore, differing toxicity profiles of the available therapeutic options are often a deciding factor in second-line setting for NSCLC.

A multicenter, randomized, phase 3 trial comparing fixed dose versus toxicity-adjusted dose of cisplatin + etoposide in extensive small-cell lung cancer (SCLC) patients: The Small-cell-lung cancer Toxicity Adjusted Dosing (STAD-1) trial

OBJECTIVES

Data supporting the prognostic role of chemotherapy induced haematological toxicity suggest that toxicity-adjusted-dosing (TAD) of chemotherapy might improve treatment efficacy. We tested whether TAD of the cisplatin-etoposide combination might improve the response rate, in previously untreated extensive stage disease (ED)-SCLC patients, as compared with standard fixed-dosing (FD).

METHODS

Patients with ED-SCLC were randomized to receive either TAD or FD of cisplatin-etoposide as first-line treatment. Primary endpoint was the objective response rate (ORR) according to the RECIST 1.0 criteria, secondary endpoints included progression free survival (PFS), overall survival (OS) and toxicity.

RESULTS

Hundred-fifty-eight patients were randomized. Most patients were male, with ECOG-PS 1, without brain metastases and had not received radiotherapy before study entry. Response rate was 54.4 (95%CI: 43.5-64.9%) and 58.2 (95%CI: 47.2-68.5%) in the control and experimental arms, respectively (P=0.75). No significant differences were found in terms of PFS (HR 1.04; 95%CI: 0.74-1.44, P=0.84) and OS (HR1.01; 95%CI 0.71-1.42, p=0.97). Seven patients died on treatment, one in the standard arm and 6 in the experimental arm. The most frequent cause of death was neutropenia with infection and, apart in one, death was not related to dose modification. Severe toxicity was more frequent in the experimental arm (91% vs 60%).

CONCLUSIONS

In our population of chemonaïve ED SCLC patients, TAD failed to improve the ORR, PFS and OS over the FD of cisplatin-etoposide as first line chemotherapy and was associated with increased toxicity.

Biomarker analysis of the phase 3 TORCH trial for first line erlotinib versus chemotherapy in advanced non-small cell lung cancer patients

Background

The TORCH phase III trial compared the efficacy of first-line erlotinib followed by chemotherapy at progression (experimental arm) with the reverse sequence (standard arm) in unselected advanced non-small cell lung cancer (NSCLC) patients. Here we report biomarker analyses.

Methods

EGFR and KRAS mutation, expression of EGFR family members and of cMET and PTEN and EGFR and ABCG2 germline polymorphisms were tested on tumor tissue or blood samples to either confirm previously proposed predictive role or describe it in an explorative setting. Progression-free survival (PFS) was the primary end-point, overall survival, response rate and side effects (diarrhoea and skin toxicity) were secondary end-points. Interactions between biomarkers and treatment were studied with multivariable models (either Cox model or logistic regression). Statistical analyses accounted for multiple comparisons.

Results

At least one biomarker was assessed in 324 out of 760 patients in the TORCH study. EGFR mutation was more common in female (P = 0.0001), East Asians (P < 0.0001) and never smoker (P < 0.0001) patients; low MET protein expression by IHC (H-score <200) was more frequent in squamous (P < 0.00009) and ABCG2 C/A or A/A polymorphism was more frequent among East-Asian patients (P = 0.0003). A significant interaction was found for EGFR mutation in PFS and response rate analyses while no predictive effect on OS was found for any biomarker. No biomarker tested was prognostic for PFS and OS. No polymorphism was significantly associated with skin toxicity or diarrhea.

Conclusion

In the present study, beyond the known role of EGFR mutation, no other biomarker has predictive or prognostic role.

Developments in pharmacotherapy for treating metastatic non-small cell lung cancer

INTRODUCTION

Most patients with non-small cell lung (NSCLC), including squamous cell carcinoma, adenocarcinoma and large cell carcinoma, have advanced disease at diagnosis and systemic therapy is the standard-of-care. About 20% of Caucasian patients are affected by an oncogene-addicted advanced NSCLC for which correspondent inhibitors are available. Areas covered: The main state-of-the-art synthetic anticancer drugs in the groups of chemotherapeutics, epidermal growth factor receptor and anaplastic lymphoma kinase tyrosine kinase inhibitors for NSCLC treatment, are reviewed and discussed from phase III randomized practice-changing trials onwards. A structured search of bibliographic databases for peer-reviewed research literature and of main meetings using a focused review question was undertaken. Expert opinion: The survival of NSCLC patients is increasing, regardless of the presence or not of a specific target, due to the availability of new generation drugs. The continuous deep knowledge of the mechanisms of NSCLC development and the constant research into new drugs should lead to the discovery of new potential targets and the synthesis of corresponding inhibitors to improve the outcomes of each subgroup of patients in order to control the disease in a constantly growing percentage of patients.

The Role of the Antiangiogenetic Ramucirumab in the Treatment of Advanced Non Small Cell Lung Cancer

Angiogenesis is one of the most important phenomena sustaining tumor development and metastatization, including for non small cell lung cancer (NSCLC). A dominant role in angiogenesis is played by the vascular endothelial growth factor (VEGF) and its signaling pathway. Ramucirumab, is a fully human immunoglobulin G1 monoclonal antibody that binds to the extracellular domain of the VEGF receptor-2 (VEGFR-2) with high specificity and affinity blocking the interaction of VEGFR-2 and VEGF ligands, thus inhibiting their signaling pathways and the consequential endothelial proliferation and migration. A recent phase III randomized trial named REVEL, demonstrated the efficacy of ramucirumab in combination with docetaxel as second line treatment of advanced NSCLC, leading to its FDA and EMA approval in this clinical setting. In the REVEL trial advanced NSCLC patients whose disease had progressed after first line platinum-based chemotherapy, were administered ramucirumab plus docetaxel or placebo plus docetaxel. More than 1,250 patients were treated and patients randomized to the treatment with ramucirumab plus docetaxel showed a significant longer median overall survival compared to those randomized to chemotherapy only. Ramucirumab is the first antiangiogenetic agent approved in the treatment both of squamous and non squamous NSCLC. In fact, it is not associated with increased risk of respiratory bleeding in the squamous histology, and also has demonstrated efficacy in both histology types. The role of ramucirumab, already cleared in the second-line treatment of advanced NSCLC, needs to be clarified further and is currently being explored also in the first-line treatment of advanced NSCLC.

New Antiangiogenetic Therapy Beyond Bevacizumab in the Treatment of Advanced Non Small Cell Lung Cancer

Lung cancer is the leading cause of death from cancer worldwide with limited available treatment options in absence of specific molecular alteration. New therapeutic approaches for addressing non small cell lung cancer (NSCLC) are urgently needed. Angiogenesis plays a central role in the tumor growth and metastatic dissemination which stimulates multiple cells to build new abnormal microvessels and leads to tumor microenvironment alterations. This process involves many factors, such as, the vascular endothelial growth factor (VEGF) that has a dominant role, the fibroblast growth factors (FGFs) and the plateled-derived growth factor (PDGF) that together contribute to resistance to VEGF/VEGFR- directed therapy. To date, bevacizumab is currently the only angiogenesis inhibitor that has been approved for the treatment of patients with advanced NSCLC in first-line setting. Moreover, in the last year, two new antiangiogenic agents have been approved for the treatment of patients with advanced NSCLC in second line setting. This review describes the new antiangiogenic agents in the treatment of advanced NSCLC.

The role of pembrolizumab in the treatment of advanced non-small cell lung cancer

Lung cancer is the leading cause of death cancer related worldwide. The standard therapies have unmet medical needs both due to the limited activity and relevant toxicity of platinum-based chemotherapy and to the low frequency of specific alterations required to use targeted therapies. Immune checkpoint inhibition due to restoring the immune system's capacity to eradicate tumors is undergoing in extensive investigation in non-small cell lung cancer (NSCLC) as a new treatment approach. Programmed cell death protein-1 (PD-1) and its ligand, programmed cell death-ligand 1 (PD-L1) have recently led to significantly and durable improvements in the clinical outcome of several kind of tumors including lung cancer. Pembrolizumab, approved by the U.S. FDA for the treatment of advanced NSCLC progressed after other therapies and with expression of PD-L1, has demonstrated durable response and prolonged overall survival (OS) especially in patients with high PD-L1 expression. Further investigation are needed to improve treatment outcomes through combination of immunotherapy or combined with other targeted therapies.

Anti-EGFR and antiangiogenic monoclonal antibodies in metastatic non-small-cell lung cancer

INTRODUCTION

In recent years, several clinical trials have evaluated the efficacy and safety of biological therapies in lung cancer. Epidermal growth factor receptor (EGFR) and the axis vascular endothelial growth factor receptor (VEGF/VEGFR) are targeted by small molecules and monoclonal antibodies (mAbs), especially in non-squamous non-small-cell lung cancer (NSCLC).

AREAS COVERED

The current state of the art of anti-EGFR and antiangiogenic monoclonal antibodies in metastatic NSCLC is reviewed and discussed.

EXPERT OPINION

Bevacizumab and cetuximab are the most studied mAbs in NSCLC, but only bevacizumab is in clinical practice in the first-line setting. Necitumumab is a new anti-EGFR monoclonal antibody that improves survival when combined to cisplatin/gemcitabine chemotherapy and has been approved in first-line advanced NSCLC. Ramucirumab, an antiangiogenic drug binding with high affinity to VEGFR-2, improves the results of chemotherapy alone when administered with docetaxel and has been approved in second-line setting. Moreover, the novel combination of bevacizumab and erlotinib is very promising for the treatment of patients with NSCLC harbouring EGFR mutations. The association of antiangiogenic mAbs and immunotherapy is under investigation too.

Agents in the preclinical development stage for non-small cell lung cancer

Despite recent advancements in identifying distinct molecular subtypes with driver oncogenes and advances in developing targeted treatments such as epidermal growth factor receptor and anaplastic lymphoma kinase inhibitors, current therapeutic approaches for tumors with no driver mutation have achieved a plateau of effectiveness. Thus, the overall outlook of lung cancer survival for most patients remains dismal. Moreover, the inevitable acquisition of resistance to targeted therapies has prompted significant efforts to develop second-generation inhibitors. In recent years, several agents for targeted therapy of lung cancers are rapidly migrating from bench to bedside and multiple small molecule inhibitors with activity against distinct receptors, genes or molecular pathways have been developed.

Overcoming resistance to targeted therapies in NSCLC: current approaches and clinical application

The discovery that a number of aberrant tumorigenic processes and signal transduction pathways are mediated by druggable protein kinases has led to a revolutionary change in nonsmall cell lung cancer (NSCLC) treatment. Epidermal growth factor receptor (EGFR) and anaplastic lymphoma kinase (ALK) are the targets of several tyrosine kinase inhibitors (TKIs), some of them approved for treatment and others currently in clinical development. First-generation agents offer, in target populations, a substantial improvement of outcomes compared with standard chemotherapy in the treatment of advanced NSCLC. Unfortunately, drug resistance develops after initial benefit through a variety of mechanisms. Novel generation EGFR and ALK inhibitors are currently in advanced clinical development and are producing encouraging results in patients with acquired resistance to previous generation agents. The search for new drugs or strategies to overcome the TKI resistance in patients with EGFR mutations or ALK rearrangements is to be considered a priority for the improvement of outcomes in the treatment of advanced NSCLC.

Irreversible EGFR inhibitors in the treatment of advanced NSCLC

The epidermal growth factor receptor (EGFR) is among the most important targets in the treatment of advanced non-small cell lung cancer (NSCLC). Erlotinib and gefitinib, two small molecules, are reversible EGFR tyrosine kinase inhibitors (TKIs). Non-small cell lung cancers with EGFR mutations, are characterized by excellent responses when treated with the EGFR-TKIs gefitinib and erlotinib. However, all the patients with tumors harbouring EGFR mutations experience disease progression after a median of 10 to 14 months of treatment with gefitinib or erlotinib. A group of new generation EGFR-TKIs irreversibly inhibit EGFR-TK and represent one of the strategies that may potentially overcome the acquired resistance to gefitinib and erlotinib or achieve better outcomes than reversible inhibitors in the first-line treatment of EGFR mutant lung cancers. Afatinib (BIBW 2992) and PF299804 are the irreversible EGFR-TKIs with the most relevant data in the treatment of advanced NSCLC, as primary EGFR-targeted therapy and after resistance to reversible EGFR-TKIs. However, to date, the role of irreversible EGFR inhibitors remains to be defined.

Necitumumab for the treatment of stage IV metastatic squamous non-small-cell lung cancer

Over the past two decades, progress in the treatment of patients with metastatic squamous non-small-cell lung cancer has been limited. The EGFR is involved in tumor progression and invasion and therefore it has become the target of several studies in lung cancer. Strategies to block this pathway are focused on the development of small molecule (tyrosine kinase inhibitor) and monoclonal antibodies (mAbs). Some mAbs have been studied in patients with advanced non-small-cell lung cancer. For the first time, a fully human immunoglobulin G (IMC-11F8), subclass 1 (IgG1) mAb targeting the EGFR, in combination with standard chemotherapy (cisplatin + gemcitabine), has been shown to increase overall survival in chemo-naïve patients with metastatic confirmed squamous cell histology.