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1.
Int J Mol Sci ; 25(16)2024 Aug 13.
Article in English | MEDLINE | ID: mdl-39201507

ABSTRACT

Metronomic chemotherapy with cyclophosphamide (Cpp) has shown promising results in cancer protocols. These lower and prolonged doses have antiangiogenic, pro-cytotoxic, and moderate secondary effects. Molecular iodine (I2) reduces the viability of cancer cells and, with chemotherapeutic agents, activates the antitumoral immune response and diminishes side effects. The present work evaluates the adjuvant of oral I2 with Cpp using a murine model of mammary cancer. Female Sprague Dawley rats with 7,12-dimethylbenzantracene-induced tumors received Cpp intraperitoneal (50 and 70 mg/kg two times/week, iCpp50 and iCpp70) and oral (0.03%; 50 mg/Kg; oCpp50) doses. I2 (0.05%, 50 mg/100 mL) and oCpp50 were offered in drinking water for three weeks. iCpp70 was the most efficient antitumoral dose but generated severe body weight loss and hemorrhagic cystitis (HC). I2 prevented body weight loss, exhibited adjuvant actions with Cpp, decreasing tumor growth, and canceled HC mechanisms, including decreases in vascular endothelial growth factor (VEGF) and Survivin expression. oCpp50 + I2 diminished angiogenic signals (CD34, vessel-length, and VEGF content) and proinflammatory cytokines (interleukin-10 and tumor necrosis factor-alpha) and increased cytotoxic (lymphocytic infiltration, CD8+ cells, Tbet, and interferon-gamma) and antioxidant markers (nuclear erythroid factor-2 and glutathione peroxidase). I2 enhances the effectiveness of oCpp, making it a compelling candidate for a clinical protocol.


Subject(s)
Administration, Metronomic , Cyclophosphamide , Iodine , Rats, Sprague-Dawley , Animals , Cyclophosphamide/pharmacology , Cyclophosphamide/adverse effects , Cyclophosphamide/administration & dosage , Female , Rats , Iodine/administration & dosage , Iodine/pharmacology , Mammary Neoplasms, Experimental/drug therapy , Mammary Neoplasms, Experimental/pathology , Mammary Neoplasms, Experimental/metabolism , Vascular Endothelial Growth Factor A/metabolism , Vascular Endothelial Growth Factor A/genetics , Disease Progression , Antineoplastic Agents, Alkylating/adverse effects , Antineoplastic Agents, Alkylating/administration & dosage , Antineoplastic Agents, Alkylating/pharmacology
3.
Int J Cancer ; 155(8): 1443-1454, 2024 Oct 15.
Article in English | MEDLINE | ID: mdl-38958237

ABSTRACT

A lot of hope for high-risk cancers is being pinned on immunotherapy but the evidence in children is lacking due to the rarity and limited efficacy of single-agent approaches. Here, we aim to assess the effectiveness of multimodal therapy comprising a personalized dendritic cell (DC) vaccine in children with relapsed and/or high-risk solid tumors using the N-of-1 approach in real-world scenario. A total of 160 evaluable events occurred in 48 patients during the 4-year follow-up. Overall survival of the cohort was 7.03 years. Disease control after vaccination was achieved in 53.8% patients. Comparative survival analysis showed the beneficial effect of DC vaccine beyond 2 years from initial diagnosis (HR = 0.53, P = .048) or in patients with disease control (HR = 0.16, P = .00053). A trend for synergistic effect with metronomic cyclophosphamide and/or vinblastine was indicated (HR = 0.60 P = .225). A strong synergistic effect was found for immune check-point inhibitors (ICIs) after priming with the DC vaccine (HR = 0.40, P = .0047). In conclusion, the personalized DC vaccine was an effective component in the multimodal individualized treatment. Personalized DC vaccine was effective in less burdened or more indolent diseases with a favorable safety profile and synergized with metronomic and/or immunomodulating agents.


Subject(s)
Cancer Vaccines , Cyclophosphamide , Dendritic Cells , Neoplasms , Precision Medicine , Humans , Dendritic Cells/immunology , Male , Female , Cancer Vaccines/administration & dosage , Cancer Vaccines/therapeutic use , Child , Neoplasms/mortality , Neoplasms/immunology , Neoplasms/therapy , Neoplasms/drug therapy , Precision Medicine/methods , Combined Modality Therapy , Child, Preschool , Cyclophosphamide/therapeutic use , Cyclophosphamide/administration & dosage , Adolescent , Administration, Metronomic , Immunotherapy/methods , Vinblastine/administration & dosage , Vinblastine/therapeutic use , Infant , Immune Checkpoint Inhibitors/therapeutic use , Follow-Up Studies
4.
Theranostics ; 14(9): 3548-3564, 2024.
Article in English | MEDLINE | ID: mdl-38948068

ABSTRACT

Over the past two decades, metronomic chemotherapy has gained considerable attention and has demonstrated remarkable success in the treatment of cancer. Through chronic administration and low-dose regimens, metronomic chemotherapy is associated with fewer adverse events but still effectively induces disease control. The identification of its antiangiogenic properties, direct impact on cancer cells, immunomodulatory effects on the tumour microenvironment, and metabolic reprogramming ability has established the intrinsic multitargeted nature of this therapeutic approach. Recently, the utilization of metronomic chemotherapy has evolved from salvage treatment for metastatic disease to adjuvant maintenance therapy for high-risk cancer patients, which has been prompted by the success of several substantial phase III trials. In this review, we delve into the mechanisms underlying the antitumour effects of metronomic chemotherapy and provide insights into potential combinations with other therapies for the treatment of various malignancies. Additionally, we discuss health-economic advantages and candidates for the utilization of this treatment option.


Subject(s)
Administration, Metronomic , Neoplasms , Tumor Microenvironment , Humans , Neoplasms/drug therapy , Tumor Microenvironment/drug effects , Angiogenesis Inhibitors/administration & dosage , Angiogenesis Inhibitors/therapeutic use , Antineoplastic Agents/administration & dosage , Antineoplastic Agents/therapeutic use , Animals , Antineoplastic Combined Chemotherapy Protocols/therapeutic use , Antineoplastic Combined Chemotherapy Protocols/administration & dosage
5.
Cancer Lett ; 598: 217119, 2024 Aug 28.
Article in English | MEDLINE | ID: mdl-39002693

ABSTRACT

Cyclophosphamide and ifosfamide are major alkylating agents but their therapeutics uses are limiting by the toxicity due to several toxicities. Indeed conventional chemotherapies are generally used with the maximum tolerated dose. In contrast, metronomic schedule aims to get a minimum dose for efficacy with a good safety. Depending on the dose, their mechanisms of action are different and offer a dual activity: at high dose, cyclophosphamide is mainly used in graft conditioning for its immunosuppressive properties, while at metronomic dose it is used as an immunoactive agent. Currently, at metronomic dose, cyclophosphamide is studied in clinic against various types of cancer, alone or in combination with others anticancer drugs (anti-angiogenic, immune-modulating agents, immune checkpoints blockers, vaccines, radiotherapy, others conventional anticancer agents), as a nth-line or first-line treatment. More than three quarters of clinical studies show promising results, mostly in breast, ovarian and prostate cancers. Taking advantage of the immune system, use dual antitumor action's chemotherapy is clearly a therapeutic strategy that deserves to be confirmed in order to improve the efficacy/toxicity balance of anticancer treatments, and to use CPM or analogues as a standard of care.


Subject(s)
Cyclophosphamide , Neoplasms , Humans , Cyclophosphamide/pharmacology , Cyclophosphamide/administration & dosage , Neoplasms/drug therapy , Antineoplastic Combined Chemotherapy Protocols/therapeutic use , Antineoplastic Combined Chemotherapy Protocols/pharmacology , Antineoplastic Agents, Alkylating/pharmacology , Antineoplastic Agents, Alkylating/administration & dosage , Administration, Metronomic , Ifosfamide/administration & dosage , Dose-Response Relationship, Drug
6.
Oral Oncol ; 156: 106908, 2024 Sep.
Article in English | MEDLINE | ID: mdl-38936007

ABSTRACT

BACKGROUND: This retrospective study aimed to determine the optimal metronomic chemotherapy duration (MTCD) as adjuvant therapy for patients with locally advanced nasopharyngeal carcinoma (LANPC). METHODS: This study involved LANPC patients treated with metronomic chemotherapy (MTC) using a 5-FU prodrug (S1, capecitabine, or tegafur) from May 2013 to September 2020. The optimal MTCD threshold was established using X-tile Bioinformatics software. The overall survival (OS), progression-free survival (PFS), distant metastasis-free survival (DMFS), and locoregional relapse-free survival (LRRFS) were compared between short-term and long-term groups using propensity score matching (PSM). RESULTS: A total of 546 patients were analyzed. MTCD was an independent prognostic factor for OS, PFS, and DMFS (all P < 0.05). Patients were categorized into long-term (>3 months) and short-term (≤3 months) MTCD groups. After a median follow-up of 48 months, significant differences were observed in 4-year OS (97.0 % vs. 87.1 %; P < 0.01), PFS (84.6 % vs. 70.9 %; P < 0.01), DMFS (87.3 % vs. 78.8 %; P < 0.01), and LRRFS (95.3 % vs. 87.4 %; P < 0.01) between the long-term and short-term groups. In the PSM-matched cohort of 196 patients per group, the long-term group demonstrated superior 4-year OS and LRRFS (97.3 % vs. 87.1 %, P < 0.01; 95.2 % vs. 90.0 %, P < 0.05). No significant differences in acute toxicities were observed between the groups (P > 0.05). CONCLUSION: Extended MTC with a 5-FU prodrug (>3 months) may benefit NPC patients. Further prospective studies are needed to validate these findings.


Subject(s)
Administration, Metronomic , Nasopharyngeal Carcinoma , Nasopharyngeal Neoplasms , Propensity Score , Humans , Male , Nasopharyngeal Carcinoma/drug therapy , Nasopharyngeal Carcinoma/mortality , Nasopharyngeal Carcinoma/pathology , Female , Middle Aged , Chemotherapy, Adjuvant/methods , Retrospective Studies , Nasopharyngeal Neoplasms/drug therapy , Nasopharyngeal Neoplasms/pathology , Nasopharyngeal Neoplasms/mortality , Adult , Aged , Capecitabine/administration & dosage , Capecitabine/therapeutic use , Fluorouracil/administration & dosage , Fluorouracil/therapeutic use , Antineoplastic Combined Chemotherapy Protocols/therapeutic use
7.
J Pediatr Hematol Oncol ; 46(5): 233-240, 2024 07 01.
Article in English | MEDLINE | ID: mdl-38691057

ABSTRACT

Metronomic chemotherapy (MC) is based on chronic administration of chemotherapeutic agents at minimally toxic doses without prolonged drug-free breaks, that inhibits tumor angiogenesis and induces tumor dormancy. This study aimed to determine the efficacy of MC for pediatric refractory solid tumors. We retrospectively analyzed the data of pediatric patients with relapsed/refractory solid tumors who received treatment, including low-dose continuous administration of anticancer drugs, at our institute. Of the 18 patients, the disease statuses at the initiation of MC were complete remission (n=2), partial remission/stable disease (n=5), and progressive disease (n=11). The overall survival rate was 61% at 12 months and 34% at 24 months, and the progression-free survival rate was 21% at 12 and 24 months. Although only 5 of the 18 patients showed certain tumor regression or maintained remission, tumors that stabilized, maintained remission/stable disease, and showed certain advantages in terms of overall survival rate, even if limited to progressive disease. Approximately half of the patients demonstrated temporal tumor stabilization and improved survival time. Overall, previous reports and the present study support the conclusion that MC has the potential to play an important role in pediatric cancer treatment during the advanced stage.


Subject(s)
Administration, Metronomic , Neoplasms , Humans , Retrospective Studies , Child , Female , Male , Neoplasms/drug therapy , Neoplasms/mortality , Neoplasms/pathology , Adolescent , Child, Preschool , Survival Rate , Infant , Antineoplastic Combined Chemotherapy Protocols/therapeutic use , Antineoplastic Combined Chemotherapy Protocols/administration & dosage
8.
JCO Glob Oncol ; 10: e2300488, 2024 May.
Article in English | MEDLINE | ID: mdl-38723215

ABSTRACT

@Thalcin explains how a metronomic regimen for desmoid tumors fits in the current treatment landscape.


Subject(s)
Administration, Metronomic , Fibromatosis, Aggressive , Humans , Fibromatosis, Aggressive/drug therapy
9.
JCO Glob Oncol ; 10: e2300308, 2024 May.
Article in English | MEDLINE | ID: mdl-38723218

ABSTRACT

PURPOSE: Desmoid fibromatosis (DF) is a locally aggressive tumor with low mortality but significant morbidity. There is a lack of standard of care, and existing therapies are associated with significant barriers including access, cost, and toxicities. This study aimed to explore the efficacy and safety of the metronomic therapy (MT) in DF in a large, homogenous cohort from India. PATIENTS AND METHODS: This study involved histologically confirmed DF cases treated with MT comprising vinblastine (6 mg) and methotrexate (15 mg) both once a week, and tamoxifen (40 mg/m2) in two divided doses once daily between 2002 and 2018. RESULTS: There were 315 patients with a median age of 27 years; the commonest site was extremity (142 of 315; 45.0%). There were 159 (50.1%) male patients. Of the 123 (39.0%) prior treated patients, 119 had surgery. Of 315 patients, 263 (83.5%) received treatment at our institute (MT-151, 77-local treatment, 9-tyrosine kinase inhibitor, and 26 were observed). Among the MT cohort (n = 163, 61.2%), at a median follow-up of 36 (0.5-186) months, the 3-year progression-free and overall survival were 81.1% (95% CI, 74.3 to 88.4) and 99.2% (95% CI, 97.6 to 100), respectively. There were 35% partial responses. Ninety-two patients (56.4%) completed 1-year therapy, which was an independent prognosticator (P < .0001; hazard ratio, 0.177 [95% CI, 0.083 to 0.377]). MT was well tolerated. Predominant grade ≥3 toxicities were febrile neutropenia, 12 (7.4%) without any chemotoxicity-related death. The annual cost of MT was $130 US dollars. CONCLUSION: The novel, low-cost MT qualifies as one of the effective, less toxic, sustainable, standard-of-care options for the treatment of DF with global reach and merits wide recognition.


Subject(s)
Administration, Metronomic , Fibromatosis, Aggressive , Methotrexate , Tertiary Care Centers , Humans , Male , Female , Adult , Fibromatosis, Aggressive/drug therapy , Fibromatosis, Aggressive/mortality , Fibromatosis, Aggressive/economics , India , Tertiary Care Centers/statistics & numerical data , Young Adult , Middle Aged , Adolescent , Methotrexate/administration & dosage , Methotrexate/therapeutic use , Methotrexate/economics , Standard of Care , Child , Vinblastine/administration & dosage , Vinblastine/therapeutic use , Aged , Antineoplastic Combined Chemotherapy Protocols/economics , Antineoplastic Combined Chemotherapy Protocols/therapeutic use , Antineoplastic Combined Chemotherapy Protocols/administration & dosage , Antineoplastic Combined Chemotherapy Protocols/adverse effects , Tamoxifen/administration & dosage , Tamoxifen/economics , Tamoxifen/therapeutic use , Retrospective Studies
10.
BMC Immunol ; 25(1): 28, 2024 May 06.
Article in English | MEDLINE | ID: mdl-38710996

ABSTRACT

INTRODUCTION: Metronomic capecitabine used as an adjuvant therapy improves survival in patients with locoregionally advanced nasopharyngeal carcinoma (LA-NPC). This therapeutic approach may also contribute to improving immune function, consequently enhancing overall therapeutic efficacy. AIM: We aimed to evaluate the effect of metronomic capecitabine as adjuvant therapy on immune function and survival in cases of LA-NPC. SUBJECTS AND METHODS: 28 patients with LA-NPC were enrolled in the study and equally assigned to two groups of 14 each: experimental and control group. The experimental group received induction chemotherapy + concurrent chemotherapy + adjuvant chemotherapy as well as oral capecitabine at a dose of 650 mg/m² of body surface area twice daily for 1 year, with the option to discontinue in case of intolerance. The control group did not receive additional chemotherapy or targeted drugs after the induction chemotherapy + concurrent chemoradiotherapy; however, they were followed up regularly. Changes in immune function and survival were compared between the two groups. RESULTS: The median follow-up time was 43.5 months. One year after adjuvant chemotherapy, the experimental group showed higher levels of CD8 + cells, CD28 + CD8 + cells, and activated CD8 + cells compared to the control group (P < 0.05). The CD4/CD8 ratio and proportion of monocyte-derived dendritic cells were also higher in the experimental group than in the control group, but the difference was not statistically significant (P ≥ 0.05). Comparisons of 3-year overall survival, local-regional recurrence-free survival, progression-free survival, and distant metastasis-free survival between the two groups showed percentages of 92.9% vs. 78.6%, 92.9% vs. 92.9%, 78.6% vs. 71.4%, and 85.7% vs. 0.78 0.6% respectively, but these differences were not significant (P > 0 0.05 ). CONCLUSION: Metronomic capecitabine chemotherapy was observed to induce an immunomodulatory effect in LA-NPC. TRIAL REGISTRATION: NCT02958111, date of registration 04-11-2016.


Subject(s)
Administration, Metronomic , Capecitabine , Nasopharyngeal Carcinoma , Nasopharyngeal Neoplasms , Humans , Capecitabine/administration & dosage , Capecitabine/therapeutic use , Male , Nasopharyngeal Carcinoma/drug therapy , Nasopharyngeal Carcinoma/immunology , Nasopharyngeal Carcinoma/mortality , Female , Middle Aged , Adult , Chemotherapy, Adjuvant/methods , Nasopharyngeal Neoplasms/drug therapy , Nasopharyngeal Neoplasms/immunology , CD8-Positive T-Lymphocytes/immunology , Aged , Neoplasm Staging , Treatment Outcome , Antimetabolites, Antineoplastic/administration & dosage , Antimetabolites, Antineoplastic/therapeutic use , Follow-Up Studies
11.
Cancer Lett ; 594: 216990, 2024 Jul 10.
Article in English | MEDLINE | ID: mdl-38801886

ABSTRACT

Current methods of cancer therapy have demonstrated enormous potential in tumor inhibition. However, a high dosage regimen of chemotherapy results in various complications which affect the normal body cells. Tumor cells also develop resistance against the prescribed drugs in the whole treatment regimen increasing the risk of cancer relapse. Metronomic chemotherapy is a modern treatment method that involves administering drugs at low doses continuously, allowing the drug sufficient time to take its effect. This method ensures that the toxicity of the drugs is to a minimum in comparison to conventional chemotherapy. Nanoparticles have shown efficacy in delivering drugs to the tumor cells in various cancer therapies. Combining nanoparticles with metronomic chemotherapy can yield better treatment results. This combination stimulates the immune system, improving cancer cells recognition by immune cells. Evidence from clinical and pre-clinical trials supports the use of metronomic delivery for drug-loaded nanoparticles. This review focuses on the functionalization of nanoparticles for improved drug delivery and inhibition of tumor growth. It emphasizes the mechanisms of metronomic chemotherapy and its conjunction with nanotechnology. Additionally, it explores tumor progression and the current methods of chemotherapy. The challenges associated with nano-based metronomic chemotherapy are outlined, paving the way for prospects in this dynamic field.


Subject(s)
Administration, Metronomic , Nanoparticles , Neoplasms , Humans , Neoplasms/drug therapy , Neoplasms/pathology , Nanoparticles/administration & dosage , Antineoplastic Agents/administration & dosage , Animals , Drug Delivery Systems/methods , Drug Carriers
12.
Pediatr Blood Cancer ; 71(8): e31076, 2024 Aug.
Article in English | MEDLINE | ID: mdl-38778441

ABSTRACT

Metronomic chemotherapy-based combinations have received interest for relapsed/refractory malignancies. Preclinical and clinical studies showed activity of metronomic etoposide and axitinib. We report our retrospective experience in six children treated with axitinib and metronomic etoposide for refractory/relapsed brain tumors as an "off-label" combination. Three patients with medulloblastoma experienced partial response; one patient with atypical teratoid rhabdoid tumor (ATRT) displays an ongoing stable disease (12 months); two patients with medulloblastoma had progressive disease. Grade 3-4 toxicities were observed in two patients (thrombocytopenia, anemia, diarrhea, fatigue). The axitinib-etoposide combination shows signals of efficacy in heavily pretreated patients with relapsed/refractory brain tumors. These results were based on real-world observation and will need formal evaluation in a phase I/II trial.


Subject(s)
Administration, Metronomic , Antineoplastic Combined Chemotherapy Protocols , Axitinib , Brain Neoplasms , Etoposide , Neoplasm Recurrence, Local , Humans , Male , Retrospective Studies , Female , Etoposide/administration & dosage , Etoposide/adverse effects , Antineoplastic Combined Chemotherapy Protocols/therapeutic use , Antineoplastic Combined Chemotherapy Protocols/adverse effects , Child , Axitinib/therapeutic use , Axitinib/administration & dosage , Brain Neoplasms/drug therapy , Brain Neoplasms/pathology , Child, Preschool , Neoplasm Recurrence, Local/drug therapy , Neoplasm Recurrence, Local/pathology , Adolescent , Administration, Oral , Follow-Up Studies , Prognosis , Infant
14.
Math Biosci ; 372: 109186, 2024 Jun.
Article in English | MEDLINE | ID: mdl-38580078

ABSTRACT

Metronomic chemotherapy refers to the frequent administration of chemotherapeutic agents at a lower dose and presents an attractive alternative to conventional chemotherapy with encouraging response rates. However, the schedule of the therapy, including the dosage of the drug, is usually based on empiricism. The confounding effects of tumor-endothelial-immune interactions during metronomic administration of drugs have not yet been explored in detail, resulting in an incomplete assessment of drug dose and frequency evaluations. The present study aimed to gain a mechanistic understanding of different actions of metronomic chemotherapy using a mathematical model. We have established an analytical condition for determining the dosage and frequency of the drug depending on its clearance rate for complete tumor elimination. The model also brings forward the immune-mediated clearance of the tumor during the metronomic administration of the chemotherapeutic agent. The results from the global sensitivity analysis showed an increase in the sensitivity of drug and immune-mediated killing factors toward the tumor population during metronomic scheduling. Our results emphasize metronomic scheduling over the maximum tolerated dose (MTD) and define a model-based approach for approximating the optimal schedule of drug administration to eliminate tumors while minimizing harm to the immune cells and the patient's body.


Subject(s)
Administration, Metronomic , Antineoplastic Agents , Neoplasms , Humans , Neoplasms/drug therapy , Neoplasms/immunology , Antineoplastic Agents/administration & dosage , Models, Theoretical , Models, Biological , Maximum Tolerated Dose , Mathematical Concepts
15.
Cancer Lett ; 591: 216900, 2024 Jun 01.
Article in English | MEDLINE | ID: mdl-38636896

ABSTRACT

Metronomic chemotherapy (mCHEMO), based on frequent, regular administration of low, but pharmacologically active drug doses, optimizes antitumor efficacy by targeting multiple targets and reducing toxicity of antineoplastic drugs. This minireview will summarize preclinical and clinical studies on cytotoxic drugs given at weekly, daily, or at continuous metronomic schedules alone or in combination with novel targeted agents for hematological malignancies, including lymphoma, multiple myeloma, and leukemia. Most of the preclinical in vitro and in vivo studies have reported a significant benefit of both mCHEMO monotherapy and combinatorial regimens compared with chemotherapy at the maximum tolerated dose. However, the combination of mCHEMO with targeted drugs is still little explored in the hematologic clinical setting. Data obtained from preclinical studies on low dose metronomic chemotherapy in hematological malignancies clearly suggested the possibility to clinically investigate more tolerable and effective strategies for the treatment of patients with advanced hematological malignancies, or at least for those frail and elderly patients, who are not eligible or resistant to standard treatments.


Subject(s)
Administration, Metronomic , Hematologic Neoplasms , Humans , Hematologic Neoplasms/drug therapy , Antineoplastic Agents/administration & dosage , Antineoplastic Agents/adverse effects , Antineoplastic Agents/therapeutic use , Animals , Antineoplastic Combined Chemotherapy Protocols/therapeutic use , Antineoplastic Combined Chemotherapy Protocols/adverse effects
16.
Breast ; 75: 103725, 2024 Jun.
Article in English | MEDLINE | ID: mdl-38615483

ABSTRACT

BACKGROUND: Optimizing chemotherapy to achieve disease and symptoms control is a noteworthy purpose in advanced breast cancer (ABC). We reported the activity and quality of life of a phase II study, comparing metronomic regimen with standard schedule as first line chemotherapy for ABC. METHODS: Patients with HER2 negative ABC were randomized to non-pegylated liposomal doxorubicin (NPLD, 60 mg/m2 every 3 weeks) and cyclophosphamide (CTX, 600 mg/m2 every 3 weeks) (Arm A) or NPLD (20 mg/m2 day, on day 1, 8 and 15 every 4 weeks) and metronomic daily oral CTX 50 mg (ARM B). Primary end-points were overall response rate (ORR) and quality of life, secondary progression-free survival (PFS), overall survival (OS) and toxicity. RESULTS: From August 2012 to December 2017, 121 patients were enrolled, 105 evaluable. Median follow-up was 21.3 months. Most patients had hormone receptor positive. ORR was 43 % in arm A and 50 % in arm B. Median PFS was 8.9 months in arm A and 6,4 months in arm B. There was no difference in OS. Total score was not clinically different between the two arms. Grade 4 neutropenia was observed in 12 patients and 16 patients respectively; alopecia G2 in 41 % (77 %) vs 14 (27 %) in arm A and in arm B respectively. One cardiac toxicity was observed (arm A). CONCLUSIONS: First line metronomic chemotherapy for HER2 negative ABC had similar clinical activity and quite better tolerability than standard schedule and could be considered a further treatment option when chemotherapy is indicated.


Subject(s)
Administration, Metronomic , Antineoplastic Combined Chemotherapy Protocols , Breast Neoplasms , Cyclophosphamide , Doxorubicin , Quality of Life , Receptor, ErbB-2 , Humans , Female , Breast Neoplasms/drug therapy , Breast Neoplasms/pathology , Middle Aged , Cyclophosphamide/administration & dosage , Adult , Aged , Antineoplastic Combined Chemotherapy Protocols/therapeutic use , Antineoplastic Combined Chemotherapy Protocols/administration & dosage , Doxorubicin/administration & dosage , Doxorubicin/analogs & derivatives , Receptor, ErbB-2/metabolism , Progression-Free Survival , Drug Administration Schedule , Treatment Outcome , Anthracyclines/administration & dosage , Polyethylene Glycols
17.
J Control Release ; 369: 668-683, 2024 May.
Article in English | MEDLINE | ID: mdl-38548064

ABSTRACT

Local and long-lasting administration of potent chemotherapeutics is a promising therapeutic intervention to increase the efficiency of chemotherapy of hard-to-treat tumors such as the most lethal brain tumors, glioblastomas (GBM). However, despite high toxicity for GBM cells, potent chemotherapeutics such as gemcitabine (Gem) cannot be widely implemented as they do not efficiently cross the blood brain barrier (BBB). As an alternative method for continuous administration of Gem, we here operate freestanding iontronic pumps - "GemIPs" - equipped with a custom-synthesized ion exchange membrane (IEM) to treat a GBM tumor in an avian embryonic in vivo system. We compare GemIP treatment effects with a topical metronomic treatment and observe that a remarkable growth inhibition was only achieved with steady dosing via GemIPs. Daily topical drug administration (at the maximum dosage that was not lethal for the embryonic host organism) did not decrease tumor sizes, while both treatment regimes caused S-phase cell cycle arrest and apoptosis. We hypothesize that the pharmacodynamic effects generate different intratumoral drug concentration profiles for each technique, which causes this difference in outcome. We created a digital model of the experiment, which proposes a fast decay in the local drug concentration for the topical daily treatment, but a long-lasting high local concentration of Gem close to the tumor area with GemIPs. Continuous chemotherapy with iontronic devices opens new possibilities in cancer treatment: the long-lasting and highly local dosing of clinically available, potent chemotherapeutics to greatly enhance treatment efficiency without systemic side-effects. SIGNIFICANCE STATEMENT: Iontronic pumps (GemIPs) provide continuous and localized administration of the chemotherapeutic gemcitabine (Gem) for treating glioblastoma in vivo. By generating high and constant drug concentrations near the vascularized growing tumor, GemIPs offer an efficient and less harmful alternative to systemic administration. Continuous GemIP dosing resulted in remarkable growth inhibition, superior to daily topical Gem application at higher doses. Our digital modelling shows the advantages of iontronic chemotherapy in overcoming limitations of burst release and transient concentration profiles, and providing precise control over dosing profiles and local distribution. This technology holds promise for future implants, could revolutionize treatment strategies, and offers a new platform for studying the influence of timing and dosing dependencies of already-established drugs in the fight against hard-to-treat tumors.


Subject(s)
Apoptosis , Brain Neoplasms , Deoxycytidine , Gemcitabine , Glioblastoma , Animals , Deoxycytidine/analogs & derivatives , Deoxycytidine/administration & dosage , Deoxycytidine/pharmacology , Brain Neoplasms/drug therapy , Brain Neoplasms/pathology , Glioblastoma/drug therapy , Glioblastoma/pathology , Chick Embryo , Apoptosis/drug effects , Cell Line, Tumor , Humans , Antineoplastic Agents/administration & dosage , Antineoplastic Agents/pharmacokinetics , Administration, Metronomic
18.
Cancer Lett ; 588: 216617, 2024 Apr 28.
Article in English | MEDLINE | ID: mdl-38311055

ABSTRACT

Metronomic chemotherapy refers to the consistent and regular administration of low-dose chemotherapeutic agents over an extended period, with minimal or no extended drug-free intervals. The effectiveness of metronomic chemotherapy is derived from its capacity to impede tumor angiogenesis and foster antitumor immune responses, rather than merely interrupting tumor cell mitosis. Metronomic chemotherapy has been applied in the treatment of neuroblastoma for decades, including patients with newly diagnosed high-risk neuroblastoma and relapsed or refractory neuroblastoma. In the modern era of neuroblastoma treatment, metronomic chemotherapy remains a viable option for maintenance therapy in newly diagnosed neuroblastoma patients without access to autologous stem cell transplantation or immunotherapy, especially in resource-limited regions. For relapsed or refractory patients, metronomic chemotherapy is a suitable alternative for individuals intolerant to intensified treatments or receiving palliative care. Cyclophosphamide, etoposide, vinca alkaloids, and celecoxib constitute the primary components of current metronomic chemotherapy. Given the need for additional research to determine the optimal regimen, comprehensive studies must be conducted to explore and establish standardized metronomic chemotherapy protocols. Additionally, investigating potential biomarkers and clinical prognostic factors is imperative for future advancements in this field.


Subject(s)
Hematopoietic Stem Cell Transplantation , Neuroblastoma , Humans , Antineoplastic Combined Chemotherapy Protocols/therapeutic use , Transplantation, Autologous , Neuroblastoma/drug therapy , Cyclophosphamide , Administration, Metronomic
19.
Breast ; 74: 103681, 2024 Apr.
Article in English | MEDLINE | ID: mdl-38377732

ABSTRACT

INTRODUCTION: Single-agent oral vinorelbine is a standard of care for hormone receptor (HR)-positive/human epidermal growth factor receptor 2 (HER2)-negative advanced breast cancer (ABC) that has progressed on endocrine therapy. Metronomic administration may offer a better balance of efficacy and safety than standard regimens, but data from previous trials are scarce. METHODS: In this open-label, multicenter, phase II trial, patients were randomized to oral vinorelbine administered on a metronomic (50 mg three times weekly) or weekly (60 mg/m2 in cycle 1, increasing to 80 mg/m2 if well tolerated) schedule. Treatment was continued until disease progression or intolerance. The primary endpoint was disease control rate (DCR, the proportion of patients with a best overall confirmed response of CR, PR, or stable disease lasting 6 months or more). RESULTS: One-hundred sixty-three patients were randomized and treated. The DCR was 63.4% (95% confidence interval [CI]: 52.0-73.8) with metronomic vinorelbine and 72.8% (95% CI: 61.8-82.1) with weekly vinorelbine. Weekly vinorelbine was also associated with longer progression-free survival (5.6 vs 4.0 months) and overall survival (26.7 vs 22.3 months) than metronomic vinorelbine, but was associated with more adverse events. CONCLUSIONS: In this randomized phase II trial, single-agent metronomic oral vinorelbine was effective and well tolerated as first-line chemotherapy for patients with HR-positive/HER2-negative ABC. Formal comparisons are not done in this phase II study and one can simply observe that confidence intervals of all endpoints overlap. When deciding for a chemotherapy after failure of endocrine therapy and CDK 4/6 inhibitors, oral vinorelbine might be an option to be given with either schedule. CLINICAL TRIAL REGISTRATION NUMBER: EudraCT 2014-003860-19.


Subject(s)
Breast Neoplasms , Humans , Female , Vinorelbine , Breast/metabolism , Receptor, ErbB-2/metabolism , Progression-Free Survival , Administration, Metronomic , Antineoplastic Combined Chemotherapy Protocols , Treatment Outcome , Vinblastine
20.
Dig Liver Dis ; 56(9): 1582-1591, 2024 Sep.
Article in English | MEDLINE | ID: mdl-38341377

ABSTRACT

BACKGROUND AND AIMS: The efficacy of systemic therapy for unresectable advanced hepatocellular carcinoma (aHCC) has not been proven in patients with Child-Pugh (C-P) B cirrhosis. Nevertheless, in real-world these patients are treated both with tyrosine kinase inhibitors (TKIs) and with metronomic capecitabine (MC). This study aimed to compare sorafenib and MC outcomes versus best supportive care (BSC) in C-P B patients. METHOD: Between 2008 and 2020, among 774 C-P B patients with aHCC not amenable/responsive to locoregional treatments, 410 underwent sorafenib, 62 MC, and 302 BSC. The propensity score matching method was used to correct the baseline unbalanced prognostic factors. RESULTS: In the unmatched population, median OS was 9.7 months in patients treated with sorafenib, 8.0 with MC, and 3.9 months with BSC. In sorafenib vs. BSC-matched patients (135 couples), median OS was 7.3 (4.9-9.6) vs. 3.9 (2.6-5.2) months (p<0.001). ECOG-Performance Status, tumor size, macrovascular invasion, AFP, treatment-naive, and sorafenib were independent predictors of survival. In MC vs. BSC-matched patients (40 couples), median OS was 9.0 (0.2-17.8) vs.3.0 (2.2-3.8) months (p<0.001). Median OS did not differ (p = 0.283) in sorafenib vs. MC-matched patients (55 couples). CONCLUSION: C-P B patients with aHCC undergoing BSC have poor survival. Both Sorafenib and MC treatment improve their prognosis.


Subject(s)
Administration, Metronomic , Capecitabine , Carcinoma, Hepatocellular , Liver Neoplasms , Sorafenib , Humans , Sorafenib/therapeutic use , Sorafenib/administration & dosage , Capecitabine/administration & dosage , Capecitabine/therapeutic use , Male , Carcinoma, Hepatocellular/drug therapy , Carcinoma, Hepatocellular/pathology , Carcinoma, Hepatocellular/mortality , Female , Liver Neoplasms/drug therapy , Liver Neoplasms/pathology , Liver Neoplasms/mortality , Aged , Middle Aged , Retrospective Studies , Propensity Score , Palliative Care/methods
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