Beneficial Effect of Early Intervention with Garenoxacin for Bacterial Infection-Induced Acute Exacerbation of Bronchial Asthma and Chronic Obstructive Pulmonary Disease.

BACKGROUND: Chronic obstructive pulmonary disease (COPD) and asthma have similar clinical features and are both exacerbated by airway infection. OBJECTIVE: To determine whether garenoxacin mesylate hydrate (GRNX) added to the standard care for bacterial infection-induced acute exacerbation of asthma or COPD in adults has clinical benefits. METHOD: This single-arm clinical trial was conducted from January 2015 to March 2016. Adults with a history of asthma or COPD for more than 12 months were recruited within 48 h of presentation with fever and acute deterioration of asthma or COPD requiring additional intervention. Participants were administered 400 mg GRNX daily for 7 days without additional systemic corticosteroids or other antibiotics. The primary outcome was efficacy of GRNX based on clinical symptoms and blood test results after 7 days of treatment. Secondary outcomes were: (1) comparison of the blood test results, radiograph findings, and bacterial culture surveillance before and after treatment; (2) effectiveness of GRNX after 3 days of administration; (3) analyzation of patient symptoms based on patient diary; and (4) continued effectiveness of GRNX on 14th day after the treatment (visit 3). RESULTS: The study included 44 febrile patients (34 asthma and 10 COPD). Frequently isolated bacteria included Moraxella catarrhalis (n = 6) and Klebsiella pneumoniae (n = 4). On visit 2, 40 patients responded, and no severe adverse events were observed. All secondary outcomes showed favorable results. CONCLUSION: GRNX effectively treated asthma and COPD patients with acute bacterial infection without severe adverse events. Further research with a larger study population is needed.

[Serious S-1-Induced Lung Injury Diagnosed by Early Lung Biopsy-A Case Report].

The patient was a 65-year-old man who developed dyspnea after 6 courses of S-1 and oxaliplatin(SOX)chemotherapy for advanced stomach cancer. The chemotherapy regimen consisted of SOX chemotherapy. The patient developed hypoxemia, and chest radiography revealed ground-glass opacity in both lungs. Bronchoscopy and DLST led to a diagnosis of druginduced lung injury caused by S-1. Although steroid pulse therapy was administered, the patient's condition deteriorated rapidly and was ultimately fatal. Based on the clinical course and histopathological findings, a DAD-type lung disorder was diagnosed. This description of a DAD-type drug-induced lung injury caused by S-1, for which histopathological findings were available in the early stages, is clinically valuable. We report this case along with a review of the relevant literature.

[Successful Treatment of Seasonal Influenza A (H3N2) infection-related Hemophagocytic Lymphocytosis in an Elderly Man].

A 79-year-old man experienced severe chronic obstructive pulmonary disease (COPD) and was receiving treatment for ischemic heart disease. Starting from dizziness and chilliness, he lost consciousness after few days. He was taken to our emergency department. On initial evaluation, he complained of dyspnea and was afebrile with a pulse rate, blood pressure, and respiratory rate of 105 beats/min, 112/98mmHg, and 28 breath/min, respectively. His respiratory sounds were clear and chest radiography did not show any abnormal shadows, but his arterial blood gas examination showed type II respiratory failure. Because the nasopharyngeal seasonal influenza A virus (IAV) test was positive, the patient was admitted with the diagnosis of acute exacerbation of COPD due to IAV. We administered peramivir, a specific anti-influenza drug, and started mechanical ventilation. Over time, he started to show signs of disseminated intravascular coagulation, such as multiple organ failure and thrombocytopenia. Subsequently, blood tests showed elevation of ferritin and soluble interleukin 2 receptor (sIL2R); microscopic examination of the peripheral blood revealed hemophagocytosis. Secondary hemophagocytic lymphohistiocytosis (HLH) due to IAV was diagnosed and together with corticosteroid therapy, intravenous gamma globulin was administered from the 3rd clinical day. The patint was saved with our early diagnosis and treatment of HLH and was discharged on the 92nd clinical day. Viral-induced HLH, formerly known as virus-associated hemophagocytic syndrome (VAHS), leads to multiple organ failure due to a cytokine storm scattered by viral-infected pathogenic inflammatory cells. It is well known that pandemic swine flu causes secondary HLH leading to poor outcomes. Currently, not much is known about HLH due to seasonal flu; particularly, IAV (H3N2)-related HLH cases are rare and reported cases showed poor outcomes as well. With an early diagnosis and minimum immunotherapy, we report herein on a case of IAV (H3N2)-related HLH which was treated successfully.

Multicenter, Retrospective Study to Evaluate Necitumumab Plus Cisplatin and Gemcitabine After Immune Checkpoint Inhibitors in Advanced Squamous Cell Lung Cancer in Japan: The NINJA Study.

Introduction: Necitumumab plus gemcitabine and cisplatin (GCN) is a standard therapy for patients with advanced lung squamous cell carcinoma (LSqCC). However, the efficacy and tolerability of GCN in second-line or later treatment for patients previously treated with immune checkpoint inhibitors (ICIs) remain unknown. Methods: This multicenter, retrospective, cohort study assessed the efficacy and tolerability of GCN initiated between November 1, 2019 and March 31, 2022 as second-line to fourth-line treatment in patients with advanced LSqCC who had been pretreated with ICIs. The primary end point was progression-free survival (PFS). Results: A total of 93 patients from 35 institutions in Japan were enrolled. The median PFS, median overall survival (OS), and objective response rate were 4.4 months (95% confidence interval [CI]: 3.8-5.3), 13.3 months (95% CI: 9.6-16.5), and 27.3% (95% CI: 18.3-37.8), respectively. The median PFS, median OS, and objective response rate for second-line, third-line, and fourth-line treatment groups were 4.8 months, 3.8 months, and 4.3 months (p = 0.24); 15.7 months, 11.6 months, and 10.1 months (p = 0.06); and 31.0%, 13.6%, and 37.5% (p = 0.22), respectively. The severity of GCN-related skin disorders was associated with longer PFS (p < 0.05) and OS (p < 0.05). The frequencies of grade ≥3 skin disorders, hypomagnesemia, pneumonitis, and febrile neutropenia were 16.1%, 7.5%, 1.1%, and 4.3%, respectively. There were no treatment-related deaths. Conclusions: GCN for ICI-pretreated patients with LSqCC seems tolerable and offers promising efficacy regardless of treatment line, and ICI pretreatment might enhance GCN efficacy.

Relationship of circulating tumor cells to the effectiveness of cytotoxic chemotherapy in patients with metastatic non-small-cell lung cancer.

The aim of this study was to investigate the relationship of the number of circulating tumor cells (CTCs) with the effectiveness of cytotoxic chemotherapy in patients with metastatic non-small-cell lung cancer (NSCLC). We prospectively evaluated CTCs in the peripheral blood of patients with previously untreated metastatic NSCLC. From May 2008 through August 2010, 33 patients (23 men and 10 women; median age, 64 years; range, 46-74 years) were enrolled. All patients received combination chemotherapy with gemcitabine and carboplatin. The CTCs were captured from samples of peripheral blood with a semiautomated system using an antibody against epithelial cell adhesion molecule. Blood samples with one or more CTC per 7.5 ml were defined as positive. Of total 33 patients, 12 (36.4%) had positive CTCs and 5 (15.2%) had five or more CTCs before chemotherapy. There were no differences in response rates to cytotoxic chemotherapy between CTC-positive patients and CTC-negative patients. On the other hand, the rate of progressive disease in cytotoxic chemotherapy was significantly higher in CTC-positive patients (66.7%) than in CTC-negative patients (23.8%, p = 0.02). In conclusion, the number of CTCs could be a useful predictive factor for the effectiveness of cytotoxic chemotherapy in patients with metastatic NSCLC.

Fatal rupture of pulmonary artery pseudoaneurysm after thoracic radiation therapy against lung squamous cell carcinoma: A case report and literature review.

Pulmonary artery pseudoaneurysm is a rare but fatal condition. It has been associated with lung cancer, abscesses, and radiation therapy. Identification in patients with hemoptysis is critical, and timely interventional therapy is warranted.

Distinct Afatinib Resistance Mechanisms Identified in Lung Adenocarcinoma Harboring an EGFR Mutation.

EGFR tyrosine kinase inhibitors (TKI) are associated with significant responses in non-small cell lung cancer (NSCLC) patients harboring EGFR-activating mutations. However, acquired resistance to reversible EGFR-TKIs remains a major obstacle. In particular, although the second-generation irreversible EGFR-TKI afatinib is currently used for treating NSCLC patients, the mechanisms underlying acquired afatinib resistance remain poorly understood. Here, heterogeneous mechanisms of acquired resistance were identified following long-term exposure to increasing doses of afatinib in EGFR-mutant lung adenocarcinoma PC-9 cells. Notably, three resistant cell lines, PC-9AFR1, PC-9AFR2, and PC-9AFR3 (AFR1, AFR2, and AFR3, respectively) employed distinct mechanisms for avoiding EGFR inhibition, with increased EGFR expression being detected in all resistant cell lines. Moreover, an activating EGFR mutation was partially lost in AFR1 and AFR2 cells. AFR1 cells exhibited afatinib resistance as a result of wild-type KRAS amplification and overexpression; however, these cells showed a progressive decrease and eventual loss of the acquired KRAS dependence, as well as resensitization to afatinib, following a drug holiday. Meanwhile, AFR2 cells exhibited increased expression of insulin-like growth factor-binding protein 3 (IGFBP3), which promoted insulin-like growth factor 1 receptor (IGF1R) activity and subsequent AKT phosphorylation, thereby indicating a potential bypass signaling pathway associated with IGFR1. Finally, AFR3 cells harbored the secondary EGFR mutation T790M. Our findings constitute the first report showing acquired wild-type KRAS overexpression and attenuation of afatinib resistance following a drug holiday.Implications: The heterogeneous mechanisms of afatinib resistance should facilitate the development of more effective therapeutic strategies for NSCLC patients. Mol Cancer Res; 15(7); 915-28. ©2017 AACR.

Acquired Resistance Mechanisms to Combination Met-TKI/EGFR-TKI Exposure in Met-Amplified EGFR-TKI-Resistant Lung Adenocarcinoma Harboring an Activating EGFR Mutation.

Met-amplified EGFR-tyrosine kinase inhibitor (TKI)-resistant non-small cell lung cancer (NSCLC) harboring an activating EGFR mutation is responsive to concurrent EGFR-TKI and Met-TKI treatment in a preclinical model. Here, we determined that Met-amplified gefitinib-resistant cells acquire dual resistance to inhibition of EGFR and Met tyrosine kinase activities. PC-9 lung adenocarcinoma cells harboring 15-bp deletions (Del E746_A750) in EGFR exon 19 were treated with increasing concentrations of the Met-TKI PHA665752 and 1 µmol/L gefitinib for 1 year; three resistant clones were established via Met amplification. The three dual-resistance cell lines (PC-9DR2, PC-9DR4, and PC-9DR6, designated as DR2, DR4, and DR6, respectively) exhibited different mechanisms for evading both EGFR and Met inhibition. None of the clones harbored a secondary mutation of EGFR T790M or a Met mutation. Insulin-like growth factor (IGF)/IGF1 receptor activation in DR2 and DR4 cells acted as a bypass signaling pathway. Met expression was attenuated to a greater extent in DR2 than in PC-9 cells, but was maintained in DR4 cells by overexpression of IGF-binding protein 3. In DR6 cells, Met was further amplified by association with HSP90, which protected Met from degradation and induced SET and MYND domain-containing 3 (SMYD3)-mediated Met transcription. This is the first report describing the acquisition of dual resistance mechanisms in NSCLC harboring an activating EGFR mutation to Met-TKI and EGFR-TKI following previous EGFR-TKI treatment. These results might inform the development of more effective therapeutic strategies for NSCLC treatment. Mol Cancer Ther; 15(12); 3040-54. ©2016 AACR.

Association of pharmacokinetics and pharmacogenomics with safety and efficacy of gefitinib in patients with EGFR mutation positive advanced non-small cell lung cancer.

OBJECTIVES: Gefitinib is a potent epidermal growth factor receptor (EGFR) tyrosine kinase inhibitor and is a key drug for patients with EGFR mutation-positive advanced non-small cell lung cancer (NSCLC). The pharmacokinetics of orally administered gefitinib varies greatly among patients. We prospectively evaluated the association of pharmacokinetics and pharmacogenomics with the safety and efficacy of gefitinib in patients with EGFR mutation-positive advanced NSCLC. PATIENTS AND METHODS: Pharmacokinetics was evaluated with samples of peripheral blood obtained on day 1 before treatment and 1, 3, 5, 8, and 24h after gefitinib (250 mg per day) was administered and on days 8 and 15 as the trough values. The plasma concentration of gefitinib was analyzed with high-performance liquid chromatography. The genotypes of ABCG2, ABCB1, CYP3A4, CYP3A5, and CYP2D6 genes were analyzed with direct sequencing. RESULTS: The subjects were 35 patients (21 women; median age, 72 years; range, 53 to 90 years) with stage IV adenocarcinoma harboring EGFR mutations. The median peak plasma concentration (Cmax) was 377 (range, 168-781)ng/mL. The median area under the curve (AUC) of the plasma concentration of gefitinib from 0 to 24h was 4893 (range, 698-13991) ng/mL h. The common adverse events were skin toxicity (68% of patients), diarrhea (46%), and liver injury (63%). One patient died of drug-induced interstitial lung disease (ILD). The overall response rate was 82.9% (95% confidence interval, 66.4%-93.4%). The median progression-free survival time was 10 months, and the median survival time was 25 months. The pharmacokinetics and pharmacogenomics were not associated with significantly different toxicities, response rates, or survival times with gefitinib. However, the AUC and Cmax were highest and the trough value on day 8 was the second highest in one patient who died of drug-induced ILD. CONCLUSION: Elevated gefitinib exposure might be associated with drug-induced ILD.

Evaluation of the safety and efficacy of combination chemotherapy with vinorelbine and platinum agents for patients with non-small cell lung cancer with interstitial lung disease.

BACKGROUND: Acute chemotherapy-associated exacerbation of interstitial lung disease (ILD) can occur in patients with non-small cell lung cancer (NSCLC). The safety and efficacy of cytotoxic chemotherapy has not yet been established for NSCLC with ILD. Thus, patients with advanced NSCLC with ILD usually receive only best supportive care. The aim of this study was to assess the safety and efficacy profiles of the combination chemotherapy of vinorelbine and a platinum agent in patients with advanced NSCLC with ILD. PATIENTS AND METHODS: Nineteen patients with advanced NSCLC with ILD treated with vinorelbine and a platinum agent, either cisplatin or carboplatin, were retrospectively reviewed to examine acute exacerbation of ILD, toxicity, response rate, and survival time. Additionally, possible predictive factors for acute chemotherapy-associated exacerbation of ILD were analyzed. RESULTS: The response rate was 42.1%, the progression-free survival time was 4.4 months, the median survival time was 7.4 months, and the one-year survival rate was 36.8%. Neutropenia was the most frequent grade 3 to 4 toxicity and it occurred in 63.2% of patients. Acute chemotherapy-associated exacerbation of ILD occurred in three patients (15.8%) and caused the death of one of these patients (5.3%). No variables were identified as being predictive factors for acute chemotherapy-associated exacerbation of ILD. CONCLUSION: The combination chemotherapy with vinorelbine and a platinum agent can be considered as a treatment option for patients with advanced NSCLC with ILD, with careful management after sufficient evaluation of the risks and the benefits.

Phase II trial of the combination of carboplatin and irinotecan in elderly patients with small-cell lung cancer.

AIM: The aim of the present phase II study was to assess the antitumour activity and safety of the combination of irinotecan and carboplatin in elderly patients with small-cell lung cancer (SCLC). MATERIAL AND METHODS: Patients with previously untreated SCLC were eligible if they had a performance status of 0-2, were 70 years or older, and had adequate organ function. Patients were treated with carboplatin at an area under the plasma concentration versus time curve of 5 min/ml on day 1 and with irinotecan at 50mg/m(2) on days 1 and 8 every 3 weeks. RESULTS: Thirty patients (26 men and 4 women; median age, 76 years; age range, 70-86 years) were enrolled. Eight patients had limited disease (LD) and 22 patients had extensive disease (ED). The overall response rate was 83.3% (95% confidence interval: 65.3-94.4%). Response rates did not differ significantly between patients with LD (87.5%) and those with ED (81.8%; p=0.71). The median survival time was 14 months overall and was significantly longer in patients with LD (26 months) than in patients with ED (11 months; p=0.025). The median progression free survival time was 6 months overall and was significantly longer in patients with LD (12 months) than in patients with ED (6 months; p=0.016). Grade 3-4 toxicities included neutropenia in 83% of patients, thrombocytopenia in 47%, anaemia in 60%, infection in 23%, and diarrhoea in 20%. There were no treatment-related deaths. CONCLUSIONS: This chemotherapy is safe and effective for elderly patients with SCLC.

Phase II study of S-1, a novel oral fluoropyrimidine, and biweekly administration of docetaxel for previously treated advanced non-small-cell lung cancer.

PURPOSE: We examined the safety and efficacy of the combination of S-1 and biweekly docetaxel in patients with previously treated advanced non-small-cell lung cancer (NSCLC). METHODS: Patients with previously treated advanced NSCLC were eligible if they had a performance status of 2 or less, were 80 years or younger, and had adequate organ function. Forty-nine patients (38 men and 11 women; median age, 66 years; range 43-79 years) were enrolled. Patients were treated with the combination of 80 mg/m(2) per day of S-1 for 14 consecutive days and 35 mg/m(2) of docetaxel on days 1 and 15 every 4 weeks. RESULTS: The overall response rate was 16.3% (95% confidence interval, 7.6-30.5%). The disease-control rate was 49.0% (95% confidence interval, 34.4-63.7%). The median survival time after this treatment was 9 months (range 1-22 months). The median progression-free survival time was 3 months (range 1-11 months). Response rates and survival times did not differ significantly according to the histological type. Grade 3-5 toxicities included neutropenia in 51.0% of patients, thrombocytopenia in 2.0%, anemia in 20.4%, infection in 24.5%, anorexia in 12.2%, diarrhea in 14.3%, nausea in 6.1%, and dehydration in 4.2%. There was 1 treatment-related death due to severe anorexia, stomatitis, diarrhea, and, as consequence, dehydration. CONCLUSIONS: The combination of S-1 and biweekly docetaxel is an acceptable therapeutic option in patients with previously treated advanced NSCLC regardless of the histological type.