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Salimi M, Adibifar A, Rostamkhani N, Karami Z, Agh-Atabay AH, Abdi Z, Rostamizadeh K. Bovine serum albumin-coated ZIF-8 nanoparticles to enhance antitumor and antimetastatic activity of methotrexate: in vitro and in vivo study. JOURNAL OF BIOMATERIALS SCIENCE. POLYMER EDITION 2024:1-21. [PMID: 39037940 DOI: 10.1080/09205063.2024.2379652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2024] [Accepted: 06/28/2024] [Indexed: 07/24/2024]
Abstract
In this study, a bovine serum albumin-decorated zeolitic imidazolate framework (ZIF-8@BSA) was used to enhance the anticancer and antimetastatic properties of methotrexate. SEM, DLS, FT-IR, and XRD confirmed the physicochemical suitability of the developed nanoparticles. According to the SEM analysis, the mean size of ZIF-8 nanoparticles was 68.5 ± 13.31 nm. The loading capacity and encapsulation efficiency of MTX@ZIF-8@BSA were 28.77 ± 2.54% and 96.3 ± 0.67%, respectively. According to the in vitro hemolysis test, MTX@ZIF-8@BSA showed excellent blood compatibility. MTX@ZIF-8@BSA exhibited pH sensitivity, releasing more MTX at pH 5.4 (1.73 times) than at pH 7.4. The IC50 value of MTX@ZIF-8@BSA on 4T1 cells was 32.7 ± 7.3 µg/mL after 48 h of treatment, outperforming compared to free MTX with an IC50 value of 53.3 ± 3.7 µg/mL. Treatment with MTX@ZIF-8@BSA resulted in superior tumor growth suppression in tumor-bearing mice than free MTX. Furthermore, based on histopathology tests, MTX@ZIF-8@BSA reduced the metastasis in lung and liver tissues. While there was not any noticeable toxicity in the vital organs of MTX@ZIF-8@BSA-receiving mice, free methotrexate resulted in severe toxicity in the kidneys and liver. According to the preliminary in vitro and in vivo findings, MTX@ZIF-8@BSA presents an attractive drug delivery system candidate for breast cancer due to its enhanced antitumor efficacy and lower toxicity.
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Affiliation(s)
- Maryam Salimi
- Pharmaceutical Nanotechnology Research Center, Zanjan University of Medical Sciences, Zanjan, Iran
- Department of Pharmaceutical Biomaterials, School of Pharmacy, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Arghavan Adibifar
- Pharmaceutical Nanotechnology Research Center, Zanjan University of Medical Sciences, Zanjan, Iran
- Department of Pharmaceutical Biomaterials, School of Pharmacy, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Neda Rostamkhani
- Pharmaceutical Nanotechnology Research Center, Zanjan University of Medical Sciences, Zanjan, Iran
- Department of Pharmaceutical Biomaterials, School of Pharmacy, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Zahra Karami
- Pharmaceutical Nanotechnology Research Center, Zanjan University of Medical Sciences, Zanjan, Iran
- Department of Pharmaceutical Nanotechnology, School of Pharmacy, Zanjan University of Medical Sciences, Zanjan, Iran
| | | | - Zahra Abdi
- Department of Anatomical Sciences, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Kobra Rostamizadeh
- Pharmaceutical Nanotechnology Research Center, Zanjan University of Medical Sciences, Zanjan, Iran
- Department of Psychiatry and Behavioral Sciences, Department of Pharmacology, School of Medicine, University of WA, Seattle, WA, USA
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Mayer EL, Tayob N, Ren S, Savoie JJ, Spigel DR, Burris HA, Ryan PD, Harris LN, Winer EP, Burstein HJ. A randomized phase II study of metronomic cyclophosphamide and methotrexate (CM) with or without bevacizumab in patients with advanced breast cancer. Breast Cancer Res Treat 2024; 204:123-132. [PMID: 38019444 DOI: 10.1007/s10549-023-07167-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Accepted: 10/24/2023] [Indexed: 11/30/2023]
Abstract
PURPOSE Metronomic chemotherapy has the potential to offer tumor control with reduced toxicity when compared to standard dose chemotherapy in patients with metastatic breast cancer. As metronomic chemotherapy may target the tumor microvasculature, it has the potential for synergistic effects with antiangiogenic agents such as the VEGF-A inhibitor bevacizumab. METHODS In this randomized phase II study, patients with metastatic breast cancer were randomized to receive metronomic oral cyclophosphamide and methotrexate (CM) combined with bevacizumab (Arm A) or CM alone (Arm B). The primary endpoint was objective response rate (ORR). Secondary endpoints included progression-free survival (PFS), overall survival (OS), and safety and tolerability. RESULTS A total of 55 patients were enrolled, with 34 patients treated on Arm A and 21 patients treated on Arm B. The ORR was modestly higher in Arm A (26%) than in Arm B (10%); neither met the 40% cutoff for further clinical evaluation. The median time to progression (TTP) was 5.52 months (3.22-13.6) on Arm A and 1.82 months (1.54-6.70) on Arm B (log-rank p = 0.008). The median OS was 29.6 months (17.2-NA) on Arm A and 16.2 months (15.7-NA) on Arm B (log-rank p = 0.7). Common all-grade adverse events in both arms included nausea, fatigue, and elevated AST. CONCLUSION The combination of metronomic CM with bevacizumab significantly improved PFS over CM alone, although there was no significant difference in OS. Oral metronomic chemotherapy alone has limited activity in advanced breast cancer. CLINICALTRIALS gov Identifier: NCT00083031. Date of Registration: May 17, 2004.
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Affiliation(s)
- Erica L Mayer
- Dana-Farber Cancer Institute, 450 Brookline Ave, Boston, MA, 02215, USA
| | - Nabihah Tayob
- Dana-Farber Cancer Institute, 450 Brookline Ave, Boston, MA, 02215, USA
| | - Siyang Ren
- Dana-Farber Cancer Institute, 450 Brookline Ave, Boston, MA, 02215, USA
| | - Jennifer J Savoie
- Dana-Farber Cancer Institute, 450 Brookline Ave, Boston, MA, 02215, USA
| | - David R Spigel
- Dana-Farber Cancer Institute, 450 Brookline Ave, Boston, MA, 02215, USA
- Sarah Cannon Research Institute, Nashville, TN, USA
| | - Howard A Burris
- Dana-Farber Cancer Institute, 450 Brookline Ave, Boston, MA, 02215, USA
- Sarah Cannon Research Institute, Nashville, TN, USA
| | - Paula D Ryan
- Dana-Farber Cancer Institute, 450 Brookline Ave, Boston, MA, 02215, USA
- Texas Oncology, The Woodlands, TX, USA
| | - Lyndsay N Harris
- Dana-Farber Cancer Institute, 450 Brookline Ave, Boston, MA, 02215, USA
- National Cancer Institute, Bethesda, MD, USA
| | - Eric P Winer
- Dana-Farber Cancer Institute, 450 Brookline Ave, Boston, MA, 02215, USA
- Yale Cancer Center, New Haven, CT, USA
| | - Harold J Burstein
- Dana-Farber Cancer Institute, 450 Brookline Ave, Boston, MA, 02215, USA.
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Chen S, Nie ZQ, Zhu FD, Yang CT, Yang JM, He JN, Liu XQ, Zhang J, Zhao Y. Facile Fabrication of Dual-Activatable Gastrointestinal-Based Nanocarriers for Safe Delivery and Controlled Release of Methotrexate. Chempluschem 2023; 88:e202300387. [PMID: 37728035 DOI: 10.1002/cplu.202300387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 09/11/2023] [Accepted: 09/18/2023] [Indexed: 09/21/2023]
Abstract
Colon cancer is emerging as one of the most common cancers worldwide, ranking in the top three in morbidity and mortality. Oral methotrexate (MTX) has been employed as a first-line treatment for various cancers, such as colon, breast, and lung cancer. However, the complexity and particularity of the gastrointestinal microenvironment and the limitations of MTX itself, including severe adverse effects and instability, are the main obstacles to the safe delivery of MTX to colon tumor sites. Herein, an innovative oral administrated anticancer therapeutic MTX@Am7CD/SDS NPs equipped with both pH and temperature sensitivity, which could effectively prevent MTX@Am7CD/SDS NPs from being degraded in the acidic environment mimicking the stomach and small intestine, thus harboring the potential to accumulate at the site of colon lesions and further release intestinal drug under mild conditions. In cellular assays, compared with free MTX, MTX@Am7CD/SDS NPs showed a favorable tumor inhibition effect on three tumor cell lines, as well as excellent cell uptake and apoptosis-inducing effect on SW480 cells. Therefore, this work provides a feasible solution for the safe use of MTX in the treatment of colon cancer and even other intestinal diseases.
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Affiliation(s)
- Shuai Chen
- College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming, 650500, P. R. China
| | - Zheng-Quan Nie
- College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming, 650500, P. R. China
| | - Fang-Dao Zhu
- College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming, 650500, P. R. China
| | - Cui-Ting Yang
- College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming, 650500, P. R. China
| | - Jian-Mei Yang
- College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming, 650500, P. R. China
| | - Jun-Nan He
- College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming, 650500, P. R. China
| | - Xiao-Qing Liu
- Shenzhen Kewode Technology Co., Ltd, Shenzhen, 518028, P. R. China
| | - Jin Zhang
- College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming, 650500, P. R. China
| | - Yan Zhao
- College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming, 650500, P. R. China
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Rangarajan K, Lazzereschi L, Votano D, Hamady Z. Breast cancer liver metastases: systematic review and time to event meta-analysis with comparison between available treatments. Ann R Coll Surg Engl 2023; 105:293-305. [PMID: 35175853 PMCID: PMC10066639 DOI: 10.1308/rcsann.2021.0308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/23/2021] [Indexed: 11/22/2022] Open
Abstract
INTRODUCTION The current gold standard treatment for breast cancer liver metastases (BCLM) is systemic chemotherapy and/or hormonal therapy. Nonetheless, greater consideration has been given to local therapeutic strategies in recent years. We sought to compare survival outcomes for available systemic and local treatments for BCLM, specifically surgical resection and radiofrequency ablation. METHODS A review of the PubMed (MEDLINE), Embase and Cochrane Library databases was conducted. Data from included studies were extracted and subjected to time-to-event data synthesis, algorithmically reconstructing individual patient-level data from published Kaplan-Meier survival curves. FINDINGS A total of 54 studies were included, comprising data for 5,430 patients (surgery, n=2,063; ablation, n=305; chemotherapy, n=3,062). Analysis of the reconstructed data demonstrated survival rates at 1, 3 and 5 years of 90%, 65.9% and 53%, respectively, for the surgical group, 83%, 49% and 35% for the ablation group and 53%, 24% and 14% for the chemotherapy group (p<0.0001). CONCLUSION Local therapeutic interventions such as liver resection and radiofrequency ablation are effective treatments for BCLM, particularly in patients with metastatic disease localised to the liver. Although the data from this review support surgical resection for BCLM, further prospective studies for managing oligometastatic breast cancer disease are required.
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Affiliation(s)
| | - L Lazzereschi
- University Hospital Southampton NHS Foundation Trust, UK
| | - D Votano
- Ashford & St. Peter’s Hospitals NHS Foundation Trust, UK
| | - Z Hamady
- Ashford & St. Peter’s Hospitals NHS Foundation Trust, UK
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Cazzaniga ME, Capici S, Cordani N, Cogliati V, Pepe FF, Riva F, Cerrito MG. Metronomic Chemotherapy for Metastatic Breast Cancer Treatment: Clinical and Preclinical Data between Lights and Shadows. J Clin Med 2022; 11:jcm11164710. [PMID: 36012949 PMCID: PMC9410269 DOI: 10.3390/jcm11164710] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 08/08/2022] [Accepted: 08/09/2022] [Indexed: 11/26/2022] Open
Abstract
Metronomic chemotherapy (mCHT), defined as continuous administration of low-dose chemotherapeutic agents with no or short regular treatment-free intervals, was first introduced to the clinic in international guidelines in 2017, and, since then, has become one of the available strategies for the treatment of advanced breast cancer (ABC). Despite recent successes, many unsolved practical and theoretical issues remain to be addressed. The present review aims to identify the “lights and shadows” of mCHT in preclinical and clinical settings. In the preclinical setting, several findings indicate that one of the most noticeable effects of mCHT is on the tumor microenvironment, which, over the last twenty years, has been demonstrated to be pivotal in supporting tumor cell survival and proliferation. On the other hand, the direct effects on tumor cells have been less well-defined. In addition, critical items to be addressed are the lack of definition of an optimal biological dose (OBD), the method of administration of metronomic schedules, and the recognition and validation of predictive biomarkers. In the clinical context—where mCHT has mainly been used in a metastatic setting—low toxicity is the most well-recognised light of mCHT, whereas the type of study design, the absence of randomised trials and uncertainty in terms of doses and drugs remain among the shadows. In conclusion, growing evidence indicates that mCHT is a suitable treatment option for selected metastatic breast cancer (MBC) patients. Moreover, given its multimodal mechanisms of action, its addition to immunological and targeted therapies might represent a promising new approach to the treatment of MBC. More preclinical data are needed in this regard, which can only be obtained through support for translational research as the key link between basic science and patient care.
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Affiliation(s)
- Marina Elena Cazzaniga
- School of Medicine and Surgery, Milano-Bicocca University, 20900 Monza, Italy
- Phase 1 Research Centre, ASST Monza, 20900 Monza, Italy
| | - Serena Capici
- Phase 1 Research Centre, ASST Monza, 20900 Monza, Italy
| | - Nicoletta Cordani
- School of Medicine and Surgery, Milano-Bicocca University, 20900 Monza, Italy
| | | | | | | | - Maria Grazia Cerrito
- School of Medicine and Surgery, Milano-Bicocca University, 20900 Monza, Italy
- Correspondence: ; Tel.: +39-039-2339037
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Sureshkumar K, Srinivasan K, Lingeshwaran GP, Durairaj M, Thiruvengadam G, Mary Martin Daniel PJ, Muhasaparur Ganesan R. Toxicity profile, adverse drug reactions and drug-drug interactions among geriatric cancer patients under metronomic chemotherapy in a South Indian tertiary care hospital. J Oncol Pharm Pract 2022:10781552221078934. [PMID: 35132888 DOI: 10.1177/10781552221078934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
OBJECTIVE The study aims to examine the toxicity profile, pattern of adverse drug reactions (ADRs) and drug-drug interactions (DDIs) in geriatric cancer patients receiving metronomic chemotherapy. PATIENTS AND METHODS Patients were followed after each cycle till 12 weeks. Haematological parameters such as complete blood count, liver function test and renal function test were recorded from the baseline to the final visit. The Common Terminology Criteria for Adverse Events (CTCAE) scale was used to characterise the toxicity profile. ADRs that the patients had were documented and assessed for its causality, severity and preventability. The Lexicomp drug interaction checker was used to grade DDIs. RESULTS Of 129 patients, according to CTCAE grading, haemoglobin indicated grade 1 toxicity, while other haematological parameters revealed no toxicity. Although there was a statistically significant difference in ALT, alkaline phosphate, serum creatinine and potassium (p < 0.05), it was not clinically significant. A total of 226 ADRs were documented. Anaemia was the most frequently occurred ADR (14%) and Capecitabine caused the highest number of ADRs. Assessments of causality showed that the majority of cases are "possible" (63%). In evaluating the severity of ADRs, 99% ADRs were "mild" and 61% of ADRs were "probably" preventable. Upon assessing the DDIs, 82% of the prescriptions had "no known interaction". CONCLUSION Metronomic chemotherapy in geriatric cancer patients exhibited grade 1 toxicity for haemoglobin. Anemia was the most common ADRs. The majority of cases were "possible" in causality, "mild" in severity, and "probably" preventable. The majority of the prescriptions have no known DDIs.
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Affiliation(s)
- Kaoshik Sureshkumar
- Department of Pharmacy Practice, Sri Ramachandra Faculty of Pharmacy, 204733Sri Ramachandra Institute of Higher Education and Research, Deemed to be University, Porur, Chennai, India
| | - Kaviya Srinivasan
- Department of Pharmacy Practice, Sri Ramachandra Faculty of Pharmacy, 204733Sri Ramachandra Institute of Higher Education and Research, Deemed to be University, Porur, Chennai, India
| | - Gingee Prabu Lingeshwaran
- Department of Pharmacy Practice, Sri Ramachandra Faculty of Pharmacy, 204733Sri Ramachandra Institute of Higher Education and Research, Deemed to be University, Porur, Chennai, India
| | - Mahesh Durairaj
- Department of Pharmacy Practice, Sri Ramachandra Faculty of Pharmacy, 204733Sri Ramachandra Institute of Higher Education and Research, Deemed to be University, Porur, Chennai, India
| | - Gayathri Thiruvengadam
- Department of Allied Health Sciences, 204733Sri Ramachandra Institute of Higher Education and Research, Deemed to be University, Porur, Chennai, India
| | - Priya Jovita Mary Martin Daniel
- Department of Medical Oncology, 204733Sri Ramachandra Medical College and Research Institute, Deemed to be University, Porur, Chennai, India
| | - Rajanandh Muhasaparur Ganesan
- Department of Pharmacy Practice, Sri Ramachandra Faculty of Pharmacy, 204733Sri Ramachandra Institute of Higher Education and Research, Deemed to be University, Porur, Chennai, India
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Gerard L, Duvivier L, Gillet JP. Targeting tumor resistance mechanisms. Fac Rev 2021; 10:6. [PMID: 33659924 PMCID: PMC7894262 DOI: 10.12703/r/10-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Cancer develops resistance to treatments through many mechanisms. Single-cell analyses reveal the intratumor heterogeneity and dynamic relationships between cancer cell subpopulations. These analyses also highlight that various mechanisms of resistance may coexist in a given tumor. Studies have unraveled how the microenvironment affects tumor response to treatments and how cancer cells may adapt to these treatments. Though challenging, individualized treatment based on the molecular characterization of the tumor should become the new standard of care. In the meantime, the success rate of clinical trials in oncology remains dramatically low. There is a need to do better and improve the predictability of preclinical models. This requires innovative changes in ex vivo models and the culture system currently being used. An innovative ligand design is also urgently needed. The limited arsenal of medicinal chemistry reactions and the biases of scaffold selection favor structurally similar compounds with linear shapes at the expense of disc and spherical shapes, which leave a large chemical shape space untouched. In this regard, venoms have received increasing interest as a wellspring for drug candidates. Overall, the characterization of tumor heterogeneity has contributed to advancing our understanding of the mechanisms that underlie cancer resistance to treatments. Targeting these mechanisms will require setting key milestones to significantly improve the translatability of preclinical studies to the clinic with the hope of increasing the success rate of clinical trials.
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Affiliation(s)
- Louise Gerard
- Laboratory of Molecular Cancer Biology, Molecular Physiology Research Unit (URPhyM), Namur Research Institute for Life Sciences (NARILIS), Faculty of Medicine, University of Namur, Namur, Belgium
| | - Laurent Duvivier
- Laboratory of Molecular Cancer Biology, Molecular Physiology Research Unit (URPhyM), Namur Research Institute for Life Sciences (NARILIS), Faculty of Medicine, University of Namur, Namur, Belgium
| | - Jean-Pierre Gillet
- Laboratory of Molecular Cancer Biology, Molecular Physiology Research Unit (URPhyM), Namur Research Institute for Life Sciences (NARILIS), Faculty of Medicine, University of Namur, Namur, Belgium
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Low-dose metronomic chemotherapy as an efficient treatment option in metastatic breast cancer-results of an exploratory case-control study. Breast Cancer Res Treat 2020; 182:389-399. [PMID: 32495001 PMCID: PMC7297707 DOI: 10.1007/s10549-020-05711-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Accepted: 05/26/2020] [Indexed: 12/23/2022]
Abstract
Purpose There is growing interest in low-dose metronomic chemotherapy (LDMC) in metastatic breast cancer (MBC). In this retrospective case–control analysis, we compared the efficacy of LDMC and conventional chemotherapy (CCT) in MBC. Methods Each LDMC patient receiving oral cyclophosphamide (CTX) (50 mg daily) and methotrexate (MTX) (2.5 mg every other day) was matched with two controls who received CCT. Age, number of chemotherapy lines and metastatic sites as well as hormone receptor (HR) status were considered as matching criteria. Primary endpoint was disease control rate longer than 24 weeks (DCR). Secondary endpoints were progression-free survival (PFS), duration of response (DoR) and subgroup analyses using the matching criteria. Results 40 cases and 80 controls entered the study. 30.0% patients with LDMC and 22.5% patients with CCT showed DCR (p = 0.380). The median PFS was 12.0 weeks in both groups (p = 0.218) and the median DoR was 31.0 vs. 20.5 weeks (p = 0.383), respectively. Among younger patients, DCR was 40.0% in LDMC vs. 25.0% in the CCT group (p = 0.249). DCR was achieved in 33.3% vs. 26.2% non-heavily pretreated patients (p = 0.568) and in 36.0% vs. 18.0% patients without multiple metastases (p = 0.096), respectively. In the HR-positive group, 30.0% LDMC vs. 28.3% CCT patients showed DCR (p = 1.000). Among triple-negative patients, DCR was achieved in 30.0% LDMC and 5.0% CCT patients (p = 0.095). Conclusions We demonstrated a similar efficacy of LDMC compared to CCT in the treatment of MBC. Thus, LDMC may be a valuable treatment option in selected MBC patients.
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Lu Q, Lee K, Xu F, Xia W, Zheng Q, Hong R, Jiang K, Zhai Q, Li Y, Shi Y, Yuan Z, Wang S. Metronomic chemotherapy of cyclophosphamide plus methotrexate for advanced breast cancer: Real-world data analyses and experience of one center. Cancer Commun (Lond) 2020; 40:222-233. [PMID: 32390331 PMCID: PMC7238669 DOI: 10.1002/cac2.12029] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 01/02/2020] [Accepted: 04/19/2020] [Indexed: 12/16/2022] Open
Abstract
Background Real‐world data of the CM regimen [cyclophosphamide (CTX) plus methotrexate (MTX)] in metronomic pattern for advanced breast cancer is limited to small‐sample or retrospective studies. This study was aimed to determine the effectiveness and safety of CM regimen in treating advanced breast cancer and to identify which patients are most likely to benefit from metronomic CM regimen. Methods Patients with advanced breast cancer who received the metronomic CM regimen at least once between January 2009 and February 2019 in Sun Yat‐sen University Cancer Center were included. Clinicopathological characteristics were collected. Overall survival (OS) and progression‐free survival (PFS) were assessed using Kaplan‐Meier estimates. Characteristics between patients with PFS < 6 months and ≥6 months were compared using the Chi‐square test. Univariate and multivariate Cox regression model was used to estimate the prognostic factors for PFS and OS. Results A total of 186 patients were included. The median age and follow‐up were 49 years and 13.3 months, respectively. Over 50% of the patients were estrogen receptor/progesterone receptor‐positive, and 60.8% had been heavily treated (≥3 lines). The objective response rate was 3.8%, the disease control rate at 12 weeks was 41.4%, and the clinical benefit rate at 24 weeks was 31.2% (58/186). The median PFS was 4.0 months [95% confidence interval (CI): 3.6‐4.7 months], the median duration of clinical benefit was 9.5 months (95% CI: 8.2‐10.8 months), and the median OS was 26.8 months (95% CI: 20.9‐37.7 months). Multivariate analysis for PFS revealed the CM regimen as maintenance therapy and no liver metastasis as favorable prognostic factors. Furthermore, patients without liver metastasis were more likely to have a PFS over 6 months than those with liver involvement (P = 0.022). Liver, lymph node, and brain metastases were unfavorable prognostic factors for OS. The CM regimen was well‐tolerated without newly reported adverse events. Conclusions The CM regimen was effective in selected patients. In clinical practice, it would be better used as maintenance therapy and in patients without liver metastasis. Further follow‐up investigation should be performed to examine its effect when used in combination with other treatments and determine predictive biomarkers.
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Affiliation(s)
- Qianyi Lu
- Department of Medical Oncology, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, Guangdong, 510060, P. R. China
| | - Kaping Lee
- Department of Medical Oncology, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, Guangdong, 510060, P. R. China
| | - Fei Xu
- Department of Medical Oncology, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, Guangdong, 510060, P. R. China
| | - Wen Xia
- Department of Medical Oncology, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, Guangdong, 510060, P. R. China
| | - Qiufan Zheng
- Department of Medical Oncology, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, Guangdong, 510060, P. R. China
| | - Ruoxi Hong
- Department of Medical Oncology, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, Guangdong, 510060, P. R. China
| | - Kuikui Jiang
- Department of Medical Oncology, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, Guangdong, 510060, P. R. China
| | - Qinglian Zhai
- Department of Medical Oncology, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, Guangdong, 510060, P. R. China
| | - Yuan Li
- Department of Medical Oncology, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, Guangdong, 510060, P. R. China
| | - Yanxia Shi
- Department of Medical Oncology, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, Guangdong, 510060, P. R. China
| | - Zhongyu Yuan
- Department of Medical Oncology, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, Guangdong, 510060, P. R. China
| | - Shusen Wang
- Department of Medical Oncology, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, Guangdong, 510060, P. R. China
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