Intrapleural immunotherapy with escalating doses of interleukin-2 in metastatic pleural effusions

Immune modulation in malignant pleural effusion: from microenvironment to therapeutic implications

Immune microenvironment and immunotherapy have become the focus and frontier of tumor research, and the immune checkpoint inhibitors has provided novel strategies for tumor treatment. Malignant pleural effusion (MPE) is a common end-stage manifestation of lung cancer, malignant pleural mesothelioma and other thoracic malignancies, which is invasive and often accompanied by poor prognosis, affecting the quality of life of affected patients. Currently, clinical therapy for MPE is limited to pleural puncture, pleural fixation, catheter drainage, and other palliative therapies. Immunization is a new direction for rehabilitation and treatment of MPE. The effusion caused by cancer cells establishes its own immune microenvironment during its formation. Immune cells, cytokines, signal pathways of microenvironment affect the MPE progress and prognosis of patients. The interaction between them have been proved. The relevant studies were obtained through a systematic search of PubMed database according to keywords search method. Then through screening and sorting and reading full-text, 300 literatures were screened out. Exclude irrelevant and poor quality articles, 238 literatures were cited in the references. In this study, the mechanism of immune microenvironment affecting malignant pleural effusion was discussed from the perspectives of adaptive immune cells, innate immune cells, cytokines and molecular targets. Meanwhile, this study focused on the clinical value of microenvironmental components in the immunotherapy and prognosis of malignant pleural effusion.

Retrospective Analysis of Pediatric Hepatoblastoma With Tumor Rupture: Experience From a Single Center

PURPOSE

Hepatoblastoma (HB) tumor rupture is currently considered as a high-risk factor in some risk stratification systems. This study aimed to investigate the value of HB tumor rupture in predicting the poor prognosis.

METHODS

The clinical data from children with high-risk HB or HB tumor rupture at our institution from October 2008 to 2017 were retrospectively reviewed and analyzed.

RESULTS

Together, 34 children with high-risk HB or HB tumor rupture were retrospected, including 25 in the high-risk group and nine in tumor rupture group. The 3-year overall survival (OS) rate in tumor rupture group was significantly higher than that of the high-risk group (100 vs. 64%, p = 0.0427). In tumor rupture group, seven (77.8%) of nine patients had a hemoglobin level ≤ 8 g/L and 3 of them (33.3%) had ≤ 6 g/L at the time of diagnosis. Peritoneal perfusion with interleukin-2 was implemented for each patient. At the end of the treatment, seven (77.8%) of nine patients achieved complete response (CR). No patient died at the last follow-up.

CONCLUSIONS

HB tumor rupture might not be predictive of poor prognosis with the risk of peritoneal dissemination/relapse, in which peritoneal perfusion with interleukin-2 could play a role.

Thoracic injection of low-dose interleukin-2 as an adjuvant therapy improves the control of the malignant pleural effusions: a systematic review and meta-analysis base on Chinese patients

BACKGROUND

Interleukin-2 (IL-2) is an important immunotherapy cytokine for various diseases including cancer. Some studies reported the efficacy and safety on cisplatin combined with IL-2 versus cisplatin alone for treating malignant pleural effusion (MPE) through thoracic injection.

METHODS

We searched these studies from medical electronic database. A total of 18 studies that met the inclusion criteria were recruited in this meta-analysis. Pooled odds ratios (OR) with 95% confidence intervals (CI) were determined by the fixed effects model of meta-analysis.

RESULTS

The objective response rate (ORR) and disease control rate (DCR) of cisplatin plus IL-2 for controlling MPE was significantly higher than that of cisplatin alone (p < 0.001). In addition, compared with cisplatin alone, the presence of IL-2 improved the quality of life (QOL) of patients with MPE (p < 0.001). Although the use of IL-2 seemed to increase the probability of fever in patients (p = 0.001), it did not lead to extra other side effects (AEs) including myelotoxicity, nausea/vomiting and chest pain (p > 0.05).

CONCLUSIONS

The low-dose IL-2 improved the ORR, DCR and QOL of patients in the treatment of MPE. Although it may cause fever in patients, it did not increase other AEs.

Interleukin-2 reverses CD8(+) T cell exhaustion in clinical malignant pleural effusion of lung cancer

Malignant pleural effusion (MPE) is a poor prognostic sign for cancer patients, whereas the functional condition of MPE CD8(+) T cells is unknown. Intracavitary immunotherapy with interleukin (IL)-2 has been proven effective in controlling MPE. To elucidate the underlying mechanism, 35 lung cancer (LC) patients with MPE and 12 healthy donors were included in this study. For the IL-2 therapy experiments, after draining partial MPE, we treated 14 patients by administrating IL-2 (3 or 5 × 10(6) U in 50 ml saline) into the thoracic cavity. Before and after IL-2 treatment (40-48 h), the MPE and peripheral blood (PB) were obtained from the subjects. PB from healthy volunteers was collected as control. The expression of programmed cell death 1 (PD-1), granzyme B (GzmB), interferon (IFN)-γ and the proliferation were analysed in CD8(+) T cells from MPE and PB. The CD8(+) T cells in the MPE of LC patients showed lowest GzmB, IFN-γ and proliferation but highest PD-1 expression, compared with that in PB of LC patients and healthy donors. IL-2 treatment reduced the expression of PD-1, increased the expression of GzmB and IFN-γ and enhanced the proliferation of CD8(+) T cells in MPE. In addition, IL-2 treatment reduced carcino-embryonic antigen (CEA) level in MPE. These results indicate that MPE CD8(+) T cells exhibit exhaustion phenotype which can be reversed by IL-2 therapy.

Surgical immune interventions for solid malignancies

BACKGROUND

The purpose of this study was to systematically review clinically translatable immunotherapeutic agents that are delivered regionally for solid malignancies.

DATA SOURCES

PubMed and ClinicalTrials.gov were searched for published and registered clinical trials, respectively. The search yielded 334 relevant publications, of which 116 articles were included for review after exclusion criteria were applied.

CONCLUSIONS

There has been an increase in the regional administration of cell-based and viral vector-based clinical trials over the last 5 years. Surgical interventions have been developed for intrapleural, intracranial, intraperitoneal, and intratumoral routes of access to enhance the local delivery of these therapies. Multimodality therapies that combine regional immunotherapy with other local and systemic therapies are demonstrating continued growth as the field of immunotherapy continues to expand.

Interleukin-2 for the treatment of solid tumors other than melanoma and renal cell carcinoma

Interleukin-2 (IL-2) is a lymphokine produced by T cells whose main function is to stimulate the growth and cytotoxic response of activated T lymphocytes. It has been used to stimulate the immune system for the treatment of multiples tumors. This article is intended to review the reports published from 1990 to 2004 on the IL-2 treatment of tumors other than melanoma and renal carcinoma. A literature search was made in various databases (MEDLINE, EMBASE and BioAssay), focused on IL-2 clinical efficacy in such tumors. A selection was made over 150 publications reporting on administration of IL-2 in multiple tumors: lung carcinoma (small cell and non-small cell), colorectal, gastric, pancreatic, ovarian and breast cancer, sarcomas, hepatocarcinoma, mesothelioma, and brain, urological, and head and neck tumors. IL-2 was mainly used in metastatic disease, associated with other immunotherapy or chemotherapy schedules. We conclude that adjuvant IL-2 may be of value in early stages combined with standard treatment for colon and pancreas cancers. In other neoplasms, the indication for adjuvant IL-2 has been sporadic and does not allow conclusions to be drawn. Assessment of the efficacy of IL-2 combined with chemotherapy as treatment for advanced stages is complex, due to the lack of a control, and the variety of dosages and schemes. The activity of IL-2 in monotherapy or in association with immunotherapy is clinically relevant in hepatocarcinoma, mesothelioma and in malignant overflows as palliative treatment. Randomized trials would be required in order to be able to draw conclusions about its indication in other tumors.

Malignant pleural effusion, current and evolving approaches for its diagnosis and management

Malignant pleural effusion is a common and debilitating complication of advanced malignant diseases. This problem seems to affect particularly those with lung and breast cancer, contributing to the poor quality of life. Approximately half of all patients with metastatic cancer develop a malignant pleural effusion at some point, which is likely to cause significant symptoms such as dyspnea and cough. Evacuation of the pleural fluid and prevention of its re-accumulation are the main goals of management. Optimal treatment is controversial and there is no universally standard approach. Intervention options range from observation in the case of asymptomatic effusions through simple thoracentesis to more invasive methods such as chemical and mechanical pleurodesis, pleur-X catheter drainage, pleuroperitoneal shunting, and pleurectomy. The best results are reported with thoracoscopy and talc insufflation, with an acceptable morbidity. Development of novel methods to control malignant pleural effusion should be a high priority in palliative care of cancer patients. This article reviews the current, as well as, novel approaches that show some promise for the future. The aim is to identify the proper approach for each individual patient.

Chemotherapeutic management of malignant pleural effusion

The management of malignant pleural effusions are a common, and sometimes difficult, therapeutic problem. This article reviews the currently available sclerosing agents and discusses novel agents that show promise for the future. Talc, tetracycline and bleomycin are currently the most widely used agents but none is an ideal sclerosant and certain adverse effects are of concern. Novel agents, particularly transforming growth factor (TGF)-beta(2) and metalloproteinase inhibitors, are being investigated, and the increase in knowledge into the mechanisms of pleural fluid formation and pleurodesis will hopefully lead to the development of targeted therapy in the future.

Lung cancer. Palliative care

The majority of patients who acquire lung cancer will have troublesome symptoms at some time during the course of their disease. Some of the symptoms are common to many types of cancers, while others are more often encountered with lung cancer than other primary sites. The most common symptoms are pain, dyspnea, and cough. This document will address the management of these symptoms, and it will also address the palliation of specific problems that are commonly seen in lung cancer: metastases to the brain, spinal cord, and bones; hemoptysis; tracheoesophageal fistula; and obstruction of the superior vena cava.

Hyperthermic pleural perfusion with cisplatin: early clinical experience

BACKGROUND

The preferred treatment for patients with pleural tumors or tumors with pleural extension has not been determined. Systemic and local modalities were studied, including intrapleural chemotherapy and hyperthermia, which mainly have been investigated separately. The objective of this study was to investigate the feasibility, toxicity and early results of a multimodality treatment consisting of surgery, chemotherapy, and hyperthermia in one session for the treatment of patients with pleural malignancies.

METHODS

From November 1994 to September 1998, 26 patients (7 patients with mesothelioma, 11 patients with thymic neoplasms, and 8 patients with other tumors) underwent intraoperative hyperthermic pleural perfusion (HPP). Perfusion was performed with a roller pump and a heat exchanger. Cisplatin was added when the temperature stabilized to a mean of 40.8 degrees C (range, 40.2-41.5 degrees C). Dosages of cisplatin used were 60 mg in 2 patients, 100 mg in 2 patients, 120 mg in 1 patient, 150 mg in 18 patients, and 200 mg in 3 patients. The patients underwent the following associated surgeries: extended extrapleural pneumonectomy in 8 patients, resection of tumor without pleurectomy in 4 patients, resection of tumors with pleurectomy in 10 patients, and exploration and HPP only in 4 patients (thoracotomy in 2 patients and video-assisted thoracoscopy in 2 patients).

RESULTS

There were no technical problems during the perfusion period. The systemic temperature rose to a maximum of 38 degrees C. There was no renal or hematologic toxicity, except in one patient who experienced thrombocytopenia. One patient died from complications related to a technical error. Eight patients had complications; the most bothersome were in four patients with empyema (early in two patients and late in two patients). The median postoperative hospital stay was 7 days (range, 2-50 days). Ten patients were alive 28-69 months after surgery. The overall 1-year, 2-year, and 3-year survival rates were 72%, 65%, and 44%, respectively. Complete ipsilateral pleuropulmonary control was achieved in 17 patients (9 patients who are alive and 8 patients who have died).

CONCLUSIONS

Intraoperative HPP with cisplatin is feasible, easy to perform, and relatively safe. This method may offer excellent local control for patients with pleural tumors.

Intrapleural administration of interleukin-2 for the treatment of patients with malignant pleural mesothelioma: a Phase II study

BACKGROUND

The prognosis associated with malignant pleural mesothelioma (MPM) is poor in spite of surgery, radiotherapy, photodynamic therapy, or chemotherapy. Therefore, new therapeutic strategies, including intrapleural immunotherapy, are being investigated. Several clinical studies have demonstrated objective antitumoral responses to intrapleural interleukin-2 (IL-2) administration in the treatment of malignant pleurisy. The maximum tolerated dose, 24 x 10(6) IU/m2/day for 5 days, was determined in a Phase I study. Based on these results, a Phase II study was conducted, in which intrapleural IL-2 (21 x 10(6) IU/m2/day for 5 days) was given to patients with MPM.

METHODS

Patients with histologically documented MPM were evaluated for response 36 days after treatment by computed tomography scan and thoracoscopy with biopsies. Toxicity was recorded and graded according to World Health Organization criteria. Survival was calculated from the start of treatment to death according to the Kaplan-Meier method, and the survival of responders and nonresponders was compared using the log rank test.

RESULTS

Twenty-two patients entered this study. Of the 22 cases of MPM, 19 were epithelial, 2 were mixed, and 1 was fibrosarcomatous. Three patients had Stage IA disease, 1 had Stage IB, 16 had Stage II, 1 had Stage III, and 1 had Stage IV (Butchart classification). All patients received their planned treatment. No dose reduction or interruption occurred. There were 11 partial responses and 1 complete response. Stable disease occurred in 3 patients and disease progression in 7 patients. The overall median survival time was 18 months; the median survival time of responders differed significantly from that of nonresponders (28 months vs. 8 months, P < 0.01). The 24- and 36-month survival rates for responders were 58% and 41%, respectively.

CONCLUSIONS

These results confirm that intrapleural administration of IL-2 is well tolerated and has antitumor activity in patients with MPM. The authors recommend a dose of 21 x 10(6) IU/m2/day for 5 days. However, determination of the schedule of IL-2 and its superiority to conventional treatment in a Phase III study has yet to be accomplished.

Phase II trial of intrapleural paclitaxel injection for non-small-cell lung cancer patients with malignant pleural effusions

A phase II clinical trial of intrapleural paclitaxel injection for malignant effusions of non-small-cell lung cancer (NSCLC) was conducted in order to evaluate the efficacy and toxicity profile of paclitaxel pleurodesis in patients with malignant effusions. From February to May of 1996, 15 NSCLC patients with malignant pleural effusions were enrolled on study. After adequate drainage and assurance of lung re-expansion, paclitaxel 125 mg m-2 diluted in normal saline was infused through a preinserted pig-tail catheter which was removed 2 h later. Chest radiography and sonography were scheduled 4 days later; depending on whether there remained a significant amount of pleural effusion, further drainage by needle thoracentesis or by a pig-tail catheter was performed. All patients were assessable for toxicity. Ipsilateral chest and/or shoulder pain, fever, facial flushing and nausea were the most frequent side-effects. Grade 4 neutropenia, grade 3 anaemia, and grade 3 renal impairment occurred in one patient each. Fourteen patients were evaluable for response at the end of the fourth week. Overall response rate of pleural effusion in evaluable patients was 92.9%, with a complete response rate of 28.6%. There was one out of 14 evaluable patients whose measurable tumour lesion decreased by more than 50% (partial response). No disease progression was noted among evaluable patients at the end of the fourth week. It is concluded that paclitaxel is a useful agent for the treatment of malignant pleural effusions. Because of its relatively low systemic toxicity, intrapleural paclitaxel injection in combination with systemic chemotherapy or radiotherapy can be considered in treating NSCLC patients with malignant pleural effusions.

Management of malignant pleural effusions

Malignant pleural effusions (MPEs) represent a common complication of advanced malignancies. However, adequate palliation of this highly symptomatic accompaniment to cancer can be achieved in most patients by adopting the appropriate therapy. Several options are available for the treatment of MPE. Systemic therapy may control the effusion in patients whose underlying malignancy is sensitive to anti-cancer agents. Repeated thoracocentesis can be appropriate for patients with limited life expectancy or slowly recurrent effusions. In the majority of the remaining cases the treatment of choice is pleurodesis with sclerosing agents administered via tube thoracostomy. Controversy still exists as to which drug produces the best results: talc and bleomycin appear to be among the most cost-effective agents. The debate over the best agent to be used for pleurodesis refers to the difficulty in comparing results of studies using different eligibility criteria, response assessment and end-points. This article describes the various treatments which have been reported in the literature to play a role in the management of MPEs. It is also aimed at providing guidelines in allocating patients to appropriate treatments.

Thoracoscopic talc poudrage pleurodesis for malignant effusions. A review of 360 cases

OBJECTIVE

To assess the efficacy, permanence, and safety of thoracoscopic talc poudrage (TTP) for pleurodesis in malignant effusions.

DESIGN

Retrospective.

PARTICIPANTS

Patients with lifetime follow-up who received TTP in two related centers in Marseilles, France.

RESULTS

Three hundred sixty patients were included in this study: 88 had mesothelioma and 272 had pleural metastases. The mean follow-up time was 12 months (2 to 120). Of the 327 patients whose response could be evaluated, 90.2% had a successful pleurodesis at 1 month, and 82.1% had a life-long pleural symphysis. Adverse effects included 1 death 3 days after the procedure in a patient with end-stage disease, fever (9.8%), empyema (2.5%), pulmonary infection (0.8%), and malignant invasion of the scar (1 patient).

CONCLUSIONS

TTP is an effective and safe method of lifelong pleurodesis. It should be performed early on in the history of malignant effusions to avoid the risk of respiratory failure, this being directly linked to the general and respiratory status of the patients at the time of the procedure.

Diagnosis and management of malignant pleural effusions

Approximately half of all patients with metastatic cancer develop malignant pleural effusions. Because the patients are already terminally ill, these effusions can present significant diagnostic and therapeutic challenges. Symptoms are either present at the time of diagnosis or develop subsequently in virtually all cases. The diagnosis is based on chest radiography followed by thoracentesis or thoracoscopy. Most malignant effusions are exudative and about one third are bloody. Cytology is positive for cancer cells in the initial pleural fluid specimens from 60% of patients who are ultimately shown to have malignant effusions. The remaining 40% require a repeat thoracentesis, pleural biopsy, thoracoscopy, or multiple procedures to prove the presence of cancer. Because the average life expectancy of a patient with a malignant pleural effusion is about 6 months, it is important to obtain a diagnosis expeditiously and formulate a treatment plan that optimizes quality of life. Tube thoracostomy with chemical pleurodesis using doxycycline or bleomycin is the mainstay of current treatment and is about 85% effective.

Intrapleural treatment with recombinant gamma-interferon in early stage malignant pleural mesothelioma

BACKGROUND

This report presents the results of a prospective multi-institutional study of intrapleural treatment with gamma-interferon in patients with Butchart's Stages I and II epithelial or mixed malignant pleural mesothelioma.

METHODS

Interferon was administered at a dose of 40 million units twice a week for 8 weeks intrapleurally via a catheter or an implantable port. Thoracoscopic or surgical biopsy was performed if computed tomography scan 2 weeks after the end of treatment demonstrated a reduction in tumor size. Survival was calculated after a follow-up of at least 18 months. Prognostic factors were identified by univariate and multivariate analyses (Cox model).

RESULTS

Eighty-nine patients were included over 46 months. Eight histologically confirmed complete responses and nine partial responses with at least a 50% reduction in tumor size were obtained. The overall response rate was 20%. Most responses were achieved in patients with early stage disease. The response rate for patients with Stage I disease was 45%. Tolerance of interferon was good. Treatment was performed on an outpatient basis. The main side effects were hyperthermia, liver toxicity, neutropenia, and catheter-related infection.

CONCLUSIONS

Gamma-interferon is effective mainly in Stage I mesothelioma, especially if the tumor is confined to the parietal or diaphragmatic pleura (Stage IA).

The clinical experience with interleukin-2 in cancer therapy

In May 1992, interleukin-2 (IL-2) was formally approved by the U.S. Food and Drug Administration for use in cancer treatment based on its activity in metastatic renal cell carcinoma. IL-2 alone or in combination with activated lymphocytes or other cytokines has significant anti-tumor activity against renal cell carcinoma and melanoma with response rates of 15-20%, some of which are quite durable. Limited anti-tumor effects have been noted in some patients with colorectal cancer and lymphoma. Too few patients have been studied to establish the level of activity in most other specific tumor types. The mechanism of this anti-tumor effect appears to be entirely mediated by the immunostimulatory effects of IL-2. Toxicities are dose related, but are substantial and similar regardless of the schedule of administration. Randomized trials have failed to establish (1) the superiority of high-dose bolus over continuous infusion IL-2, (2) the superiority of IL-2 plus interferon over IL-2 alone, or (3) the superiority of IL-2 plus LAK cells versus IL-2 alone. Further investigation is needed to determine the optimum dose and schedule from the standpoint of cost:benefit and risk:benefit, and to determine the role of IL-2 in the therapy of other malignant diseases.