Elevated Pre-Treatment Serum MMP-7 Levels Are Associated with the Presence of Metastasis and Poor Survival in Upper Tract Urothelial Carcinoma
by
,
Petra Terézia Kovács
1, 
Tamás Mayer
1,
Anita Csizmarik
1,
Melinda Váradi
1,
Csilla Oláh
2
,
Ádám Széles
1,
Stephan Tschirdewahn
2,
Ulrich Krafft
2,
Boris Hadaschik
2,
Péter Nyirády
1,
Péter Riesz
1,† and
Tibor Szarvas
1,2,*,† 1
Department of Urology, Semmelweis University, 1082 Budapest, Hungary
2
Department of Urology, University of Duisburg-Essen and German Cancer Consortium (DKTK)-University Hospital Essen, D-45147 Essen, Germany
*
Author to whom correspondence should be addressed.
†
The authors contributed equally to this study.
Biomedicines 2022, 10(3), 698; https://doi.org/10.3390/biomedicines10030698
Submission received: 12 February 2022
/
Revised: 9 March 2022
/
Accepted: 15 March 2022
/
Published: 17 March 2022
(This article belongs to the Section Cancer Biology and Oncology)
Abstract
:Upper tract urothelial carcinoma (UTUC) is a rare cancer with a barely predictable clinical behaviour. Serum MMP-7 is a validated prognostic marker in urothelial bladder cancer, a tumour entity with large clinical, histological, and molecular similarity to UTUC. The serum MMP-7 levels have not yet been investigated in UTUC. In the present study, we determined MMP-7 concentrations in an overall number of 103 serum samples from 57 UTUC patients who underwent surgical or systemic (platinum or immune checkpoint inhibitor) therapy by using the ELISA method. In addition to pre-treatment samples, the serum samples collected at predefined time points after or during therapy were also investigated. Serum MMP-7 concentrations were correlated with clinicopathological and follow-up data. Our results revealed significantly, two-fold elevated pre-treatment serum MMP-7 levels in metastatic cases of UTUC in both the radical surgery- and the chemotherapy-treated cohorts (p = 0.045 and p = 0.040, respectively). In addition, high serum MMP-7 levels significantly decreased after radical surgery, and high pre-treatment MMP-7 concentrations were associated with shorter survival both in the surgery- and chemotherapy-treated cohorts (p = 0.029 and p = 0.001, respectively). Our results revealed pre-treatment serum MMP-7 as a prognostic marker for UTUC, which may help to improve preoperative risk-stratification and thereby improve therapeutic decision-making.
1. Introduction
Urothelial carcinoma can develop in the entire urinary tract, including the proximal part of the urethra, bladder, ureters, and the renal pelvis. While approximately 90% of urothelial carcinomas are found in the urinary bladder, only 5–10% of cases are located in the upper urinary tract (ureters or renal pelvis) [1]. According to the data of Globocan, 573,278 new cases of bladder cancer (BC) were diagnosed worldwide in 2020, while no data were reported on the incidence of upper tract urothelial carcinoma (UTUC) [2]. In Western countries, the incidence of UTUC is 2/100,000 cases a year [1]. UTUC has long been considered as a rare localization of a common cancer, but in the last few years, a growing body of evidence has suggested clinical and molecular differences between BC and UTUC [3]. Accordingly, the European Association of Urology has published separate guidelines for BC and UTUC since 2011 [3]. The gold standard treatment for UTUC is radical nephroureterectomy (RNU) with or without perioperative (neoadjuvant or adjuvant) platinum-based chemotherapy and checkpoint inhibitor treatment for chemotherapy resistant or ineligible patients [4]. In selected, low-risk cases organ-sparing surgery is possible. Because of the difficult anatomical features of the upper urinary tract, the accuracy of the diagnostic transurethral biopsy of UTUC is limited, which may lead to overtreatment for some UTUC patients and undertreatment for others, and therefore represents therefore a significant clinical problem [5]. Preoperative prediction of pathological stage or patients’ prognosis may select patients for nephron-sparing surgery and therefore may prevent overtreatment. On the other hand, a more accurate prognostic stratification may identify high-risk patients who will benefit from a more aggressive perioperative systemic treatment. Therefore, preoperative risk-stratification of UTUC may significantly improve the quality of therapeutic decision-making and the prognosis of patients. Currently, no biomarkers are available for the preoperative risk-stratification of UTUC.
Matrix metalloproteinases (MMPs) are a family of calcium-dependent, zinc-containing proteolytic enzymes, which are capable of proteolytically cleaving all components of the extracellular matrix, such as collagens, laminin, fibronectin, and gelatine. In addition, MMPs are involved in several tumour related processes, including apoptosis, angiogenesis, and epithelial-to-mesenchymal transition. MMPs are involved in both physiological (reproduction, tissue remodelling, etc.) and pathological processes (tumour progression, metastasis, etc.) [6,7]. MMP-7, also known as matrilysin, is the smallest member of the MMP family (18 kDa size), which is considered to be directly secreted by tumour cells, in contrast to other members of the family, which are secreted by stromal cells (e.g., fibroblasts or macrophages). We previously found preoperative serum and urine MMP-7 levels to be significantly associated with a higher tumour stage and the presence of lymph node metastases in BC [7,8]. Accordingly, BC patients with elevated preoperative serum MMP-7 levels had a significantly shorter survival [7]. This observation could be confirmed in several independent BC patient cohorts [9,10,11,12]. The prognostic value of serum MMP-7 has not yet been analysed in UTUC. Therefore, in this study, we assessed pre-treatment and post-/on-treatment serum MMP-7 levels of UTUC patients who underwent surgical or systemic (platinum-based or immune checkpoint inhibitor) treatment, and correlated the results with the patients’ clinicopathological and follow-up data.
2. Materials and Methods
2.1. Patient Cohort
This study included a total of 103 serum samples from 57 UTUC patients (40 males and 17 females) who underwent surgical (RNU cohort; n = 34), systemic platinum (CTX cohort; n = 25), or immune checkpoint inhibitor (ICI cohort; n = 5) treatment between August 2014 and July 2020 at the Department of Urology at Semmelweis University (Table 1). Three patients were included in both the RNU and CTX cohort and one patient in all three (RNU, CTX, and ICI) treatment groups, while two patients were included both in CTX and ICI cohorts. For the RNU cohort, in addition to the 34 preoperatively collected serum samples, 16 postoperative (first or second day) samples were available. For the CTX cohort, in addition to the 25 baseline samples, 18 on-treatment serum samples (collected at the start of the second chemotherapy cycle) were available. For all ICI-treated patients, baseline and on-treatment samples (taken after 3 months of treatment) were available for analysis. In addition, preoperative serum samples from three patients with pT0 finding at RNU were also included (Table 1). The primary endpoint of this study was overall survival (OS) and the secondary endpoint was progression-free survival (PFS). Time to disease progression and death or survival were considered as the time from the initiation of therapy (RNU, CTX, or ICI) to the relevant endpoint (progression or death) or censoring. The date of last follow-up update was June 2021.
This study was conducted in accordance with the Declaration of Helsinki, and the institutional ethics committee approved the study protocol (TUKEB 256/2014). All patients provided written informed consent to participate in this study.
Blood samples were collected in 9 mL Vacuette® tubes. Samples were left at room temperature for 30–90 min and were separated via centrifugation for 10 min at room temperature with an Eppendorf 5702R centrifuge at 1500× g. Serum samples were aliquoted into anonymized tubes and kept at −80 °C until analysis.
2.2. Serum MMP-7 ELISA Analysis
MMP-7 serum concentrations were determined by the sandwich ELISA (Enzyme-linked immunosorbent assay) method using the Human Total MMP-7 Quantikine ELISA kit (R&D Systems, Wiesbaden, Germany, Catalog Number: DMP700), according to the product instructions. Colorimetric detection was performed by a Thermo Scientific™ Multiscan FC Microplate Photometer. The results were analysed with the help of Skanlt 5.0 Software.
2.3. Statistical Analysis
The nonparametric two-sided Wilcoxon rank sum test (Mann–Whitney test) was applied for paired group comparisons. Univariate overall and progression-free analyses were done using both Kaplan–Meier log-rank test and univariate Cox analysis. To determine the optimal cut-off value with the highest sensitivity and specificity for the prediction of patients’ death, we used the nonparametric receiver operating characteristic (ROC) curves. In all tests, a p-value of at least 0.05 was considered to be significant. All statistical analyses were done with the IBM SPSS Statistics for Windows, version 27.0 (IBM Corp., Armonk, NY, USA).
3. Results
3.1. Clinical Background
Patient characteristics for the RNU, CTX, and ICI cohorts and baseline MMP-7 concentrations are given in Table 1.
The median ages at treatment in the RNU, CTX, and ICI groups were 69, 71, and 65 years, while the median follow-up times were 24, 17, and 28 months, respectively.
3.2. Correlation of Serum MMP-7 Concentrations with Clinicopathological Parameters
For the RNU cohort, the preoperative serum MMP-7 levels tended to be lower in pT0 cases compared to those present with confirmed tumour cells in the removed tissue (5.96 ng/mL vs. 10.63 ng/mL), however this correlation did not reach statistical significance (p = 0.071). Preoperative serum MMP-7 levels showed no association with age, gender, ECOG performance status, or margin positivity. Higher serum MMP-7 levels were found in muscle-invasive and high-grade tumours, but these correlations were not significant (p = 0.140 and p = 0.077). In addition, the presence of lymph node or distant metastases at surgery was significantly associated with higher preoperative serum MMP-7 levels (p = 0.045) (Table 1 and Figure 1).
For the CTX cohort, age, sex, and clinicopathological parameters at RNU were not correlated with pre-treatment MMP-7 levels. In contrast, the presence of distant metastases at chemotherapy baseline was associated with higher MMP-7 concentrations (7.8 ng/mL vs. 18.6 ng/mL; p = 0.040).
For the ICI cohort, the low case numbers did not allow for a valid statistical analysis, therefore the cohort characteristics are provided on an individual patient level in Table 2.
3.3. Correlation of Pre-Treatment Serum MMP-7 Levels with Patients’ Prognosis
In the RNU cohort, Cox univariate analysis revealed a shorter OS in high-stage (≥pT2) (HR: 7.115; 95% CI 1.504–33.659; p = 0.013), high-grade (G3) (HR: 5.060; 95% CI 1.325–19.323; p = 0.018), and lymph node or distant metastatic (HR: 4.891; 95% CI 1.379–17.345; p = 0.014) UTUC patients. Similarly, poor PFS was associated with the same three factors (T-stage—HR: 23.899; 95% CI 3.087–185.035; p = 0.002; grade—HR: 7.670; 95% CI 2.114–27.833; p = 0.002; lymphatic or distant metastases—HR: 8.250; 95% CI 2.742–24.820; p < 0.001) (Table 3).
Patients were divided into two groups based on their pre-treatment MMP-7 concentrations, using the median value as a cut-off (10.625 ng/mL) (Figure 2A). In addition, we used the receiver operating characteristic (ROC) method for the prediction of OS to find the cut-off value with the highest sensitivity (72.7%) and specificity (69.6%), which resulted in 14.185 ng/mL as an optimal cut-off (Figure 2B). Higher preoperative serum MMP-7 levels were associated with poor OS; however, this correlation was significant only at the ROC-defined cut-off (p = 0.029) and slightly missed the significance level when using the median as a cut-off (p = 0.078) (Table 3).
In the CTX cohort, the presence of lymph node or distant metastases at chemotherapy baseline was significantly associated with poor OS and PFS (p = 0.017 and p = 0.002, respectively) (Table 3). Higher baseline MMP-7 levels were only associated with shorter OS (p < 0.001) when the ROC defined cut-off value of 17.88 ng/mL was applied (Figure 2D). This high cut-off, however, has to be handled with caution, as only five patients were assigned in the high MMP-7 group (Table 3). The relative low number of observed events (deaths) in each subgroup (RNU: 11, CTX: 13, and ICI: 1) did not allow us to perform multivariate survival analyses.
3.4. Postoperative and On-Treatment Serum MMP-7 Levels
In the RNU cohort, the median preoperative serum MMP-7 level of 10.6 ng/mL significantly decreased to 6 ng/mL (p < 0.001), suggesting that MMP-7 levels are directly associated with the presence of UTUC (Figure 3A,D). However, the extent of the postoperative MMP-7 decrease was not associated with patients‘ prognosis.
In the CTX cohort, we found no significant changes of serum MMP-7 levels between baseline and the start of second therapy cycle, and individual changes of serum MMP-7 during the first chemotherapy cycle were not associated with patients’ prognosis (Figure 3B,D).
In ICI treated patients, the on-treatment serum MMP-7 levels after 3 months of ICI treatment were slightly higher in all five cases, however here, low case numbers did not allow us to draw statistically firm conclusions (Table 2).
4. Discussion
In the present study, we analysed the serum MMP-7 concentrations in three treatment cohorts (RNU, CTX and ICI) of UTUC patients and found significantly elevated pre-treatment MMP-7 levels in patients with lymph node or distant metastases. Importantly, high pre-treatment MMP-7 levels were significantly associated with poor patients’ survival in the RNU and CTX cohorts.
UTUC is a clinically heterogenous disease with difficult prognostication due to the limited accuracy of biopsy for the evaluation of the tumour stage [13]. Therefore, in recent years, a significant effort has been invested towards the improvement of risk-stratification by preoperatively available parameters such as imaging and biomarkers [14,15]. However, most of the suggested models contain histology-based parameters (T-stage, grade, lymphovascular invasion, and lymph node status), which are affected by the inaccuracy of biopsy and imaging. Other often used parameters such as age, smoking-status, BMI, and ECOG performance status do not necessarily reflect the clinical behaviour of the disease [16,17]. In addition, tissue markers like Ki67, p53, EGFR, and E-cadherin have been investigated in smaller case series with promising results, however the relevance of these analyses is strongly limited by the availability of the biopsy specimen [15]. Against this background, serum biomarkers would be highly preferable in the prognostication of UTUC, as they are also easily available before surgical treatment and therefore may help to influence clinical decision-making regarding the extent of surgical treatment or the application of neoadjuvant systemic therapy. However, to the best of our knowledge, besides routinely determined laboratory parameters, no blood-based prognostic biomarkers have been described in UTUC [15].
In BC, we previously identified two-fold significantly higher tissue MMP-7 expression in muscle-invasive compared to non-muscle-invasive bladder cancer samples, while the highest 30x elevated tissue MMP-7 expression levels were found in the primary tumours tissues of patients present with lymph node metastases. Accordingly, serum and urine MMP-7 levels showed significantly higher levels in high-stage and metastatic cases. Furthermore, the presence of lymph node or distant metastases and high MMP-7 concentrations were independently associated with a shorter postoperative survival [7]. These observations were later confirmed in three independent BC cohorts with an overall number of more than 300 BC patients [9,10,11]. In a further study, 422 protein markers were determined in serum samples of BC patients, and MMP-7 was one of the five markers found to be prognostic [7]. In the present study, we found a significantly elevated MMP-7 concentration of 15.9 ng/mL in metastatic UTUC, which was similar to that of 13.9 n/mL that was previously found in metastatic BC [7]. Similar to the findings in BC, in the present study, we found preoperative serum MMP-7 levels to be associated with shorter survival in UTUC patients, suggesting that serum MMP-7 may help to improve the preoperative prognostication of this disease. Of note, in three cases of RNU, histological evaluation resulted in a pT0 finding, and the preoperative MMP-7 concentrations in all of these cases were proven to be low (5.9 ng/mL), suggesting that serum MMP-7, when combined with other factors, e.g., imaging and laboratory parameters, may help to select patients for an organ sparing treatment strategy. A further similarity to the findings in BC was the significant decrease of serum MMP-7 (from 10.6 to 6.0 ng/mL) directly after RNU. This decrease suggests that circulating MMP-7 levels directly originate from the tumour tissue. On the other hand, the extent of MMP-7 decrease was not associated with patients’ survival. However, we were not able to analyse MMP-7 tissue expression in the present UTUC cohort, and based on the histological similarity between UTUC and BC, we assume that the tissue expression pattern of MMP-7 in UTUC may be similar to that found in BC.
Previously published studies revealed the role of MMP-7 in chemotherapy (including cisplatin) resistance in various cancers [18,19,20,21]. In line with these findings, in BC, higher MMP-7 concentrations before platinum therapy were significantly associated with poor overall survival [22]. Similarly, in UTUC patients, we found a correlation between pre-treatment MMP-7 concentrations and shorter OS. However, in contrast to the findings in the RNU cohort, serum MMP-7 did not change significantly after the first cycle of platinum chemotherapy, however later samples from later therapy cycles were not tested yet. In the five ICI-treated patients, we observed a slight decrease of MMP-7 levels in on-treatment samples after 3 months of therapy compared to the corresponding baseline levels, however this change did not reach the significance level. In summary, MMP-7 is a serum marker that seems to be directly associated with the presence of highly aggressive tumours, and represents a promising preoperative prognostic marker for UTUC. Our results, however, need to be confirmed in larger patient cohorts to overcome the limitations inherent from the retrospective nature and the relatively small sample size of this study. This limitation, however, should be judged in relation to the low incidence of this rare disease. A further limitation is that we could not compare our data with imaging and next generation imaging methods.
A deeper insight into the role of MMP-7 in molecular and cellular mechanisms is needed for a better understanding of the role of MMP-7 in the formation and progression of various cancers and for its critical evaluation as a potential therapeutic target. MMP-7 is a protease with a broad substrate specificity, which is thereby involved in several molecular processes. As an example, degradation of Fas and Fas ligand by MMP-7 was shown to result in the inhibition of apoptosis [20,23]. Similarly, by degrading the extracellular domain of the epithelial gap junction molecule, E-cadherin, MMP-7 was shown to support epithelial-to-mesenchymal transition, which is a frequently observed phenomenon during the progression of epithelial cancers [24]. On the other hand, the products of the proteolytic degradation by MMP-7 may generate bioactive molecules with potential effects on tumour progression. For example, MMP-7, by degrading the extracellular matrix protein collagen XVIII, is able to release endostatin, a potent antiangiogenic factor, thereby influencing angiogenesis. [25]. A further example for the proteolytic activation effect of MMP-7 lies in its role as an activator of other MMP family members and activating a proteolytic cascade. MMP-7 is able to cleave the extracellular domain of some prominent proteins with known involvement in carcinogenesis, such as syndecan-1 and PD-L1 (Programmed death-ligand 1) [26,27,28]. Therefore, MMP-7 may influence epithelial cell adhesion and antitumor immunity [25,29]. Histological and molecular analyses suggest a focal distribution of MMP-7 with an accentuated expression at the invasive tumour front, suggesting its involvement in tumour infiltration [7]. Accordingly, Bolenz et al. showed that targeted downregulation of MMP-7 leads to a strong decrease in the invasive capability of BC cells [30]. Furthermore, comparing the gene expression patterns between the central tumour region and tumour bone interface in prostate cancer bone metastases revealed MMP-7 as one of the most strongly upregulated genes at the tumour–bone interface [31,32]. Accordingly, in an MMP-7 deficient rodent bone metastasis model, the absence of MMP-7 expression was associated with strongly reduced osteolytic activation and metastasis formation [31]. Later, a specific downregulation of MMP-7 in UTUC cells resulted in a decreased expression of epithelial-to-mesenchymal markers, as well as reduced motility and invasive potential of cells, highlighting the functional role of MMP-7 in UTUC [33]. Taken together, these findings suggest the functional involvement of MMP-7 in the invasion and metastatic progression of urological tumours, and make MMP-7 a potential target for therapy also in UTUC. Considering the failure of earlier prospective clinical trials with broad-spectrum MMP-inhibitors (batimastat and marimastat), an MMP subtype-specific therapeutic approach may be more feasible [34,35]. Currently, a selective MMP-7 inhibitor has been generated and holds promise for future MMP-7 targeted therapy [36].
Author Contributions
Conceptualization, T.S., P.N. and P.R.; methodology, P.T.K., T.M., M.V., and A.C.; software, P.T.K., A.C., T.S. and C.O.; formal analysis, P.T.K., T.M., M.V. and A.C.; investigation, P.T.K., T.M., M.V., A.C., C.O., S.T., U.K. and B.H.; resources, B.H.; data curation, P.T.K. and T.S.; writing—original draft preparation, P.T.K., T.S. and P.R.; writing—review and editing, Á.S., P.R., S.T., U.K. and B.H.; visualization, P.T.K. and T.S.; supervision, P.N., B.H. and P.R.; project administration, P.T.K., T.S. and P.R.; funding acquisition, T.S. All authors have read and agreed to the published version of the manuscript.
Funding
A part of this research was supported by the National Research, Development, and Innovation Office, grant/award number: 139059, and the New National Excellence Program of the Ministry for Innovation and Technology by the National Research, Development and Innovation Fund, grant/award number: ÚNKP-21-5-SE-3. Tibor Szarvas was supported by a János Bolyai Research Scholarship of the Hungarian Academy of Sciences (BO/00451/20/5). The study was supported by funding from the Wilhelm Sander Foundation (2019.118.1) and IFORES (D/107-137709).
Institutional Review Board Statement
This study was carried out in accordance with the recommendations of the Declaration of Helsinki, and all patients provided written informed consent to participate and the local ethic committee approved (permit number: TUKEB 256/2014).
Informed Consent Statement
Informed consent was obtained from all subjects involved in the study.
Data Availability Statement
The data that support the findings of this study are available from the corresponding author upon reasonable request.
Conflicts of Interest
Boris Hadaschik reported personal fees and non-financial support from AstraZeneca, Amgen, Bayer, BMS, and Janssen; personal fees from ABX, Lightpoint medical Inc, and Pfizer; and grant funding from German Research Foundation, BMS, and Novartis, all outside the submitted work. Tibor Szarvas received fees from BRAHMS and Janssen outside of the present study. The other authors declare no conflict of interest.
References
- Soria, F.; Shariat, S.F.; Lerner, S.P.; Fritsche, H.M.; Rink, M.; Kassouf, W.; Spiess, P.E.; Lotan, Y.; Ye, D.; Fernández, M.I.; et al. Epidemiology, diagnosis, preoperative evaluation and prognostic assessment of upper-tract urothelial carcinoma (UTUC). World J. Urol. 2017, 35, 379–387. [Google Scholar] [CrossRef]
- Sung, H.; Ferlay, J.; Siegel, R.L.; Laversanne, M.; Soerjomataram, I.; Jemal, A.; Bray, F. Global Cancer Statistics 2020: GLOBOCAN Estimates of Incidence and Mortality Worldwide for 36 Cancers in 185 Countries. CA Cancer J. Clin. 2021, 71, 209–249. [Google Scholar] [CrossRef] [PubMed]
- Szarvas, T.; Módos, O.; Horváth, A.; Nyirády, P. Why are upper tract urothelial carcinoma two different diseases? Transl. Androl. Urol. 2016, 5, 636–647. [Google Scholar] [CrossRef] [PubMed] [Green Version]
- Birtle, A.; Johnson, M.; Chester, J.; Jones, R.; Dolling, D.; Bryan, R.T.; Harris, C.; Winterbottom, A.; Blacker, A.; Catto, J.W.F.; et al. Adjuvant chemotherapy in upper tract urothelial carcinoma (the POUT trial): A phase 3, open-label, randomised controlled trial. Lancet 2020, 395, 1268–1277. [Google Scholar] [CrossRef]
- Chitale, S.; Mbakada, R.; Irving, S.; Burgess, N. Nephroureterectomy for transitional cell carcinoma—The value of pre-operative histology. Ann. R. Coll. Surg. Engl. 2008, 90, 45–50. [Google Scholar] [CrossRef] [Green Version]
- Singh, D.; Srivastava, S.K.; Chaudhuri, T.K.; Upadhyay, G. Multifaceted role of matrix metalloproteinases (MMPs). Front. Mol. Biosci. 2015, 2, 19. [Google Scholar] [CrossRef]
- Szarvas, T.; Becker, M.; vom Dorp, F.; Gethmann, C.; Tötsch, M.; Bánkfalvi, A.; Schmid, K.W.; Romics, I.; Rübben, H.; Ergün, S. Matrix metalloproteinase-7 as a marker of metastasis and predictor of poor survival in bladder cancer. Cancer Sci. 2010, 101, 1300–1308. [Google Scholar] [CrossRef]
- Szarvas, T.; Singer, B.B.; Becker, M.; Vom Dorp, F.; Jäger, T.; Szendroi, A.; Riesz, P.; Romics, I.; Rübben, H.; Ergün, S. Urinary matrix metalloproteinase-7 level is associated with the presence of metastasis in bladder cancer. BJU Int. 2011, 107, 1069–1073. [Google Scholar] [CrossRef]
- Szarvas, T.; Jäger, T.; Becker, M.; Tschirdewahn, S.; Niedworok, C.; Kovalszky, I.; Rübben, H.; Ergün, S.; vom Dorp, F. Validation of circulating MMP-7 level as an independent prognostic marker of poor survival in urinary bladder cancer. Pathol. Oncol. Res. 2011, 17, 325–332. [Google Scholar] [CrossRef]
- Svatek, R.S.; Shah, J.B.; Xing, J.; Chang, D.; Lin, J.; McConkey, D.J.; Wu, X.; Dinney, C.P. A multiplexed, particle-based flow cytometric assay identified plasma matrix metalloproteinase-7 to be associated with cancer-related death among patients with bladder cancer. Cancer 2010, 116, 4513–4519. [Google Scholar] [CrossRef]
- El Demery, M.; Demirdjian-Sarkissian, G.; Thezenas, S.; Jacot, W.; Laghzali, Y.; Darbouret, B.; Culine, S.; Rebillard, X.; Lamy, P.J. Serum Matrix Metalloproteinase-7 is an independent prognostic biomarker in advanced bladder cancer. Clin. Transl. Med. 2014, 3, 31. [Google Scholar] [CrossRef] [PubMed] [Green Version]
- Krafft, U.; Olah, C.; Reis, H.; Kesch, C.; Darr, C.; Grünwald, V.; Tschirdewahn, S.; Hadaschik, B.; Horvath, O.; Kenessey, I.; et al. High Serum PD-L1 Levels Are Associated with Poor Survival in Urothelial Cancer Patients Treated with Chemotherapy and Immune Checkpoint Inhibitor Therapy. Cancers 2021, 13, 2548. [Google Scholar] [CrossRef] [PubMed]
- Cha, E.K.; Shariat, S.F.; Kormaksson, M.; Novara, G.; Chromecki, T.F.; Scherr, D.S.; Lotan, Y.; Raman, J.D.; Kassouf, W.; Zigeuner, R.; et al. Predicting clinical outcomes after radical nephroureterectomy for upper tract urothelial carcinoma. Eur. Urol. 2012, 61, 818–825. [Google Scholar] [CrossRef] [PubMed]
- Taylor, J.; Meng, X.; Ghandour, R.; Margulis, V. Advancements in the clinical management of upper tract urothelial carcinoma. Expert Rev. Anticancer Ther. 2019, 19, 1051–1060. [Google Scholar] [CrossRef]
- Lughezzani, G.; Burger, M.; Margulis, V.; Matin, S.F.; Novara, G.; Roupret, M.; Shariat, S.F.; Wood, C.G.; Zigeuner, R. Prognostic factors in upper urinary tract urothelial carcinomas: A comprehensive review of the current literature. Eur. Urol. 2012, 62, 100–114. [Google Scholar] [CrossRef]
- Jeldres, C.; Sun, M.; Lughezzani, G.; Isbarn, H.; Shariat, S.F.; Widmer, H.; Graefen, M.; Montorsi, F.; Perrotte, P.; Karakiewicz, P.I. Highly predictive survival nomogram after upper urinary tract urothelial carcinoma. Cancer 2010, 116, 3774–3784. [Google Scholar] [CrossRef]
- Margulis, V.; Shariat, S.F.; Matin, S.F.; Kamat, A.M.; Zigeuner, R.; Kikuchi, E.; Lotan, Y.; Weizer, A.; Raman, J.D.; Wood, C.G. The Upper Tract Urothelial Carcinoma Collaboration. Outcomes of radical nephroureterectomy: A series from the Upper Tract Urothelial Carcinoma Collaboration. Cancer 2009, 115, 1224–1233. [Google Scholar] [CrossRef]
- Ansell, A.; Jerhammar, F.; Ceder, R.; Grafström, R.; Grénman, R.; Roberg, K. Matrix metalloproteinase-7 and -13 expression associate to cisplatin resistance in head and neck cancer cell lines. Oral Oncol. 2009, 45, 866–871. [Google Scholar] [CrossRef]
- Liu, H.; Zhang, T.; Li, X.; Huang, J.; Wu, B.; Huang, X.; Zhou, Y.; Zhu, J.; Hou, J. Predictive value of MMP-7 expression for response to chemotherapy and survival in patients with non-small cell lung cancer. Cancer Sci. 2008, 99, 2185–2192. [Google Scholar] [CrossRef]
- Almendro, V.; Ametller, E.; García-Recio, S.; Collazo, O.; Casas, I.; Augé, J.M.; Maurel, J.; Gascón, P. The role of MMP7 and its cross-talk with the FAS/FASL system during the acquisition of chemoresistance to oxaliplatin. PLoS ONE 2009, 4, e4728. [Google Scholar] [CrossRef]
- Fingleton, B.; Vargo-Gogola, T.; Crawford, H.C.; Matrisian, L.M. Matrilysin [MMP-7] expression selects for cells with reduced sensitivity to apoptosis. Neoplasia 2001, 3, 459–468. [Google Scholar] [CrossRef] [PubMed] [Green Version]
- Szarvas, T.; Hoffmann, M.J.; Olah, C.; Szekely, E.; Kiss, A.; Hess, J.; Tschirdewahn, S.; Hadaschik, B.; Grotheer, V.; Nyirady, P.; et al. MMP-7 Serum and Tissue Levels Are Associated with Poor Survival in Platinum-Treated Bladder Cancer Patients. Diagnostics 2020, 11, 48. [Google Scholar] [CrossRef] [PubMed]
- Mitsiades, N.; Yu, W.H.; Poulaki, V.; Tsokos, M.; Stamenkovic, I. Matrix metalloproteinase-7-mediated cleavage of Fas ligand protects tumor cells from chemotherapeutic drug cytotoxicity. Cancer Res. 2001, 61, 577–581. [Google Scholar] [PubMed]
- Lynch, C.C.; Vargo-Gogola, T.; Matrisian, L.M.; Fingleton, B. Cleavage of E-Cadherin by Matrix Metalloproteinase-7 Promotes Cellular Proliferation in Nontransformed Cell Lines via Activation of RhoA. J. Oncol. 2010, 2010, 530745. [Google Scholar] [CrossRef] [PubMed] [Green Version]
- Löffek, S.; Schilling, O.; Franzke, C.W. Series “matrix metalloproteinases in lung health and disease”: Biological role of matrix metalloproteinases: A critical balance. Eur. Respir. J. 2011, 38, 191–208. [Google Scholar] [CrossRef] [PubMed] [Green Version]
- Li, Q.; Park, P.W.; Wilson, C.L.; Parks, W.C. Matrilysin shedding of syndecan-1 regulates chemokine mobilization and transepithelial efflux of neutrophils in acute lung injury. Cell 2002, 111, 635–646. [Google Scholar] [CrossRef] [Green Version]
- Hira-Miyazawa, M.; Nakamura, H.; Hirai, M.; Kobayashi, Y.; Kitahara, H.; Bou-Gharios, G.; Kawashiri, S. Regulation of programmed-death ligand in the human head and neck squamous cell carcinoma microenvironment is mediated through matrix metalloproteinase-mediated proteolytic cleavage. Int. J. Oncol. 2018, 52, 379–388. [Google Scholar] [CrossRef]
- Aguirre, J.E.; Beswick, E.J.; Grim, C.; Uribe, G.; Tafoya, M.; Palma, G.C.; Samedi, V.; McKee, R.; Villeger, R.; Fofanov, Y.; et al. Matrix metalloproteinases cleave membrane-bound PD-L1 on CD90+ (myo-)fibroblasts in Crohn’s disease and regulate Th1/Th17 cell responses. Int. Immunol. 2020, 32, 57–68. [Google Scholar] [CrossRef]
- Szarvas, T.; vom Dorp, F.; Ergün, S.; Rübben, H. Matrix metalloproteinases and their clinical relevance in urinary bladder cancer. Nat. Rev. Urol. 2011, 8, 241–254. [Google Scholar] [CrossRef]
- Bolenz, C.; Knauf, D.; John, A.; Erben, P.; Steidler, A.; Schneider, S.W.; Günes, C.; Gorzelanny, C. Decreased Invasion of Urothelial Carcinoma of the Bladder by Inhibition of Matrix-Metalloproteinase 7. Bladder Cancer 2018, 4, 67–75. [Google Scholar] [CrossRef] [Green Version]
- Lynch, C.C.; Hikosaka, A.; Acuff, H.B.; Martin, M.D.; Kawai, N.; Singh, R.K.; Vargo-Gogola, T.C.; Begtrup, J.L.; Peterson, T.E.; Fingleton, B.; et al. MMP-7 promotes prostate cancer-induced osteolysis via the solubilization of RANKL. Cancer Cell 2005, 7, 485–496. [Google Scholar] [CrossRef] [PubMed] [Green Version]
- Thiolloy, S.; Halpern, J.; Holt, G.E.; Schwartz, H.S.; Mundy, G.R.; Matrisian, L.M.; Lynch, C.C. Osteoclast-derived matrix metalloproteinase-7, but not matrix metalloproteinase-9, contributes to tumor-induced osteolysis. Cancer Res. 2009, 69, 6747–6755. [Google Scholar] [CrossRef] [PubMed] [Green Version]
- Hsu, W.C.; Li, W.M.; Lee, Y.C.; Huang, A.M.; Chang, L.L.; Lin, H.H.; Wu, W.J.; Li, C.C.; Liang, P.I.; Ke, H.L. MicroRNA-145 suppresses cell migration and invasion in upper tract urothelial carcinoma by targeting ARF6. FASEB J. 2020, 34, 5975–5992. [Google Scholar] [CrossRef] [PubMed] [Green Version]
- Marimastat, B.B. 2516, TA 2516. Drugs RD 2003, 4, 198–203. [Google Scholar] [CrossRef]
- Wojtowicz-Praga, S.M.; Dickson, R.B.; Hawkins, M.J. Matrix metalloproteinase inhibitors. Investig. New Drugs 1997, 15, 61–75. [Google Scholar] [CrossRef]
- Wang, L.L.; Zhang, B.; Zheng, M.H.; Xie, Y.Z.; Wang, C.J.; Jin, J.Y. Matrix Metalloproteinases (MMPs) in Targeted Drug Delivery: Synthesis of a Potent and Highly Selective Inhibitor against Matrix Metalloproteinase-7. Curr. Top. Med. Chem. 2020, 20, 2459–2471. [Google Scholar] [CrossRef]
Figure 1.
Association of preoperative serum MMP-7 concentration and clinicopathological parameters in the RNU cohort (* significant difference).
Figure 1.
Association of preoperative serum MMP-7 concentration and clinicopathological parameters in the RNU cohort (* significant difference).
Figure 2.
Kaplan–Meier OS analyses with log-rank tests (A) for the RNU cohort with a median value, (B) for the RNU cohort with an ROC cut-off, (C) for CTX cohort with a median value, and (D) for the CTX cohort with an ROC cut-off (blue line—low MMP-7 cc., green line—high MMP-7 cc.; cut-off values are shown on each line).
Figure 2.
Kaplan–Meier OS analyses with log-rank tests (A) for the RNU cohort with a median value, (B) for the RNU cohort with an ROC cut-off, (C) for CTX cohort with a median value, and (D) for the CTX cohort with an ROC cut-off (blue line—low MMP-7 cc., green line—high MMP-7 cc.; cut-off values are shown on each line).
Figure 3.
(A) Changes of MMP-7 concentrations in the RNU cohort (preop. and postop. values). (B) Changes of MMP-7 concentrations in the CTX cohort (at chemotherapy baseline and on the first day of cycle 2). (C) Changes of MMP-7 concentrations in the ICI cohort (pre-treatment and on-treatment values). (D) Changes of MMP-7 concentrations in the RNU, CTX, and ICI cohorts (* significant difference); RNU—radical nephroureterectomy; CTX—chemotherapy; ICI—immune checkpoint inhibitor therapy.
Figure 3.
(A) Changes of MMP-7 concentrations in the RNU cohort (preop. and postop. values). (B) Changes of MMP-7 concentrations in the CTX cohort (at chemotherapy baseline and on the first day of cycle 2). (C) Changes of MMP-7 concentrations in the ICI cohort (pre-treatment and on-treatment values). (D) Changes of MMP-7 concentrations in the RNU, CTX, and ICI cohorts (* significant difference); RNU—radical nephroureterectomy; CTX—chemotherapy; ICI—immune checkpoint inhibitor therapy.
Table 1.
Patients’ characteristics. * Non-malignant—in three cases of RNU, histological examination resulted in a pT0 finding; RNU—radical nephroureterectomy; CTX—chemotherapy; ICI—immune checkpoint inhibitor therapy; ECOG PS—Eastern Cooperative Oncology Group performance status; R+—positive surgical margin; N+—lymph node metastasis; M+—distant metastasis; bold font represents significant value.
Table 1.
Patients’ characteristics. * Non-malignant—in three cases of RNU, histological examination resulted in a pT0 finding; RNU—radical nephroureterectomy; CTX—chemotherapy; ICI—immune checkpoint inhibitor therapy; ECOG PS—Eastern Cooperative Oncology Group performance status; R+—positive surgical margin; N+—lymph node metastasis; M+—distant metastasis; bold font represents significant value.
| RNU | CTX | ICI | ||||||
|---|---|---|---|---|---|---|---|---|
| General data | n | median (range) | p | n | median (range) | p | n | median (range) |
| Follow up in months, median (range) | 34 | 24.23 (1.08–81.93) | - | 25 | 16.56 (1.05–67.70) | - | 5 | 27.97 (6.92–30.2) |
| Age at baseline, median (range) | 34 | 68.50 (45–90) | - | 25 | 71 (46–84) | - | 5 | 65 (64–75) |
| Number of patients died | 11 | - | - | 13 | - | - | 1 | - |
| Parameters/MMP-7 concentrations | n | MMP-7 cc. | p | n | MMP-7 cc. | p | n | MMP-7 cc. |
| All patients, median (range) | 34 | 10.63 (3.30–31.40) | 0.071 | 25 | 8.76 (4.13–26.74) | - | 5 | 9.28 (4.46–13.90) |
| Non-malignant * | 3 | 5.96 (5.80–6.30) | ||||||
| Age ≤ 65 | 10 | 7.37 (3.3–27.36) | 0.086 | 5 | 7.3 (4.13–9.17) | 0.129 | 2 | 9.14 (9.00–9.28) |
| Age > 65 | 24 | 14.19 (4.05–31.40) | 20 | 9.99 (4.92–26.74) | 3 | 9.60 (4.46–13.90) | ||
| Sex male | 21 | 10.3 (3.3–27.36) | 0.381 | 21 | 7.91 (4.13–26.74) | 0.081 | 4 | 9.14 (4.46–13.90) |
| female | 13 | 13.84 (4.84–31.40) | 4 | 12.93 (10.28–23.28) | 1 | 9.60 | ||
| ECOG PS 0 | 19 | 13.84 (3.30–27.70) | - | 11 | 8.08 (5.86–17.18) | - | 5 | 9.28 (4.46–13.90) |
| 1 | 10 | 9.32 (4.77–31.40) | - | 10 | 10.91 (4.13–26.74) | - | 0 | |
| 2 | 4 | 9.89 (8.08–17.00) | - | 4 | 13.18 (6.68–23.28) | - | 0 | |
| 3 | 1 | 15.92 | 0 | 0 | ||||
| ECOG PS 0–1 | 29 | 10.44 (3.30–31.40) | 0.888 | 21 | 8.76 (4.13–26.74) | 0.695 | 5 | 9.28 (4.46–13.90) |
| ECOG PS 2–3 | 5 | 10.81 (8.08–17.00) | 4 | 13.18 (6.68–23.28) | 0 | |||
| Nephrouretherectomy data | ||||||||
| pTa | 7 | 9.80 (3.30–26.30) | - | 0 | - | - | 0 | - |
| CIS | 1 | 4.84 | - | 0 | - | - | 1 | 13.90 |
| pT1 | 9 | 8.21 (4.05–23.73) | - | 1 | 19.13 | - | 0 | - |
| pT2 | 2 | 22.97 (14.53–31.40) | - | 5 | 8.76 (6.73–24.02) | - | 1 | 9.00 |
| pT3 | 14 | 10.63 (4.77–27.70) | - | 15 | 7.91 (4.13–18.59) | - | 3 | 9.28 (4.46–9.60) |
| pT4 | 1 | 17.88 | - | 2 | 7.31 (4.92–9.70) | - | 0 | - |
| n.a. | 0 | 2 | - | 0 | ||||
| pTa-pT1-CIS (non-invasive) | 17 | 8.21 (3.30–26.30) | 0.140 | 1 | 19.13 | - | 1 | 13.90 |
| pT2-pT4 (invasive) | 17 | 14.53 (4.77–31.40) | 22 | 7.99 (4.13–24.02) | - | 4 | 9.14 (4.46–9.60) | |
| G1 | 7 | 8.06 (4.05–13.84) | - | 0 | - | 0 | ||
| G2 | 12 | 13.03 (3.30–26.30) | - | 5 | 13.2 (6.73–24.02) | - | 2 | 9.14 (9.00–9.28) |
| G3 | 15 | 15.60 (4.84–31.40) | - | 16 | 7.53 (4.13–18.59) | - | 2 | 9.18 (4.46–13.90) |
| n.a. | 0 | 4 | 1 | |||||
| G1-G2 | 19 | 8.21 (3.30–26.30) | 0.077 | 5 | 13.2 (6.73–24.02) | 0.075 | 2 | 9.14 (9.00–9.28) |
| G3 | 15 | 15.60 (4.84–31.40) | 16 | 7.53 (4.13–18.59) | 2 | 9.18 (4.46–13.90) | ||
| R0 | 26 | 10.37 (3.30–31.40) | 0.827 | 14 | 7.99 (4.13–24.02) | 0.224 | 3 | 9.00 (4.46–9.60) |
| R+ | 8 | 12.67 (4.77–23.73) | 9 | 8.76 (4.92–18.59) | 1 | 9.28 | ||
| n.a. | 0 | 2 | 1 | |||||
| Metastatic status at RNU | ||||||||
| N0/M0 | 25 | 8.30 (3.30–31.40) | 0.045 | 14 | 7.60 (5.86–24.02) | 0.781 | 2 | 11.45 (9.00–13.90) |
| N+ or M+ | 9 | 15.92 (8.96–27.70) | 9 | 9.26 (4.13–19.13) | 3 | 9.28 (4.46–9.60) | ||
| n.a. | 0 | 2 | 0 | |||||
| Metastatic status at CTX baseline | ||||||||
| M0 | - | 17 | 7.77 (4.13–17.18) | 0.040 | - | |||
| M+ | - | 7 | 18.59 (6.68–26.74) | - | ||||
Table 2.
Patient’s characteristics for the ICI cohort. ICI—immune checkpoint inhibitor therapy; N —lymph node metastasis; M—distant metastasis; Gem/Carb—gemcitabine + carboplatin; Gem/Cis—gemcitabine + cisplatin; n.a.—not available.
Table 2.
Patient’s characteristics for the ICI cohort. ICI—immune checkpoint inhibitor therapy; N —lymph node metastasis; M—distant metastasis; Gem/Carb—gemcitabine + carboplatin; Gem/Cis—gemcitabine + cisplatin; n.a.—not available.
| Patient 1 | Patient 2 | Patient 3 | Patient 4 | Patient 5 | |
|---|---|---|---|---|---|
| Age | 76 | 64 | 64 | 75 | 65 |
| Sex | female | male | male | male | male |
| Clinicopath. parameters at RNU | |||||
| Stage (pT) | 3 | 2 | 3 | in situ | 3 |
| Grade (G) | - | 2 | 2 | 3 | 3 |
| N | yes | no | yes | no | yes |
| M | no | no | no | no | no |
| Chemotherapy pre-treatment | Gem/Carb | Gem/Cis | Gem/Carb | n.a. | Gem/Carb |
| Clinicopath. parameters at ICI baseline | |||||
| N | yes | yes | yes | no | yes |
| M | yes | yes | no | no | yes |
| MMP-7 cc. at baseline (ng/mL) | 9.60 | 9.00 | 9.28 | 13.90 | 4.46 |
| MMP-7 cc. at 3 months (ng/mL) | 10.30 | 11.42 | 10.33 | 14.13 | 5.12 |
Table 3.
Correlation of clinicopathological parameters and preoperative MMP-7 concentrations with patients’ prognosis; * median cut-off for RNU is 10.6 ng/mL, median cut-off for CTX is 8.8 ng/mL; ** ROC cut-off for RNU is 14.2 ng/mL, ROC cut-off for CTX is 17.9 ng/mL; RNU—radical nephroureterectomy, CTX- chemotherapy; OS—overall survival; PFS—progression-free survival; PS—performance status; Gem/Cis—gemcitabine + cisplatin; Gem/Carb—gemcitabine + carboplatin; bold font represents significant value.
Table 3.
Correlation of clinicopathological parameters and preoperative MMP-7 concentrations with patients’ prognosis; * median cut-off for RNU is 10.6 ng/mL, median cut-off for CTX is 8.8 ng/mL; ** ROC cut-off for RNU is 14.2 ng/mL, ROC cut-off for CTX is 17.9 ng/mL; RNU—radical nephroureterectomy, CTX- chemotherapy; OS—overall survival; PFS—progression-free survival; PS—performance status; Gem/Cis—gemcitabine + cisplatin; Gem/Carb—gemcitabine + carboplatin; bold font represents significant value.
| RNU | CTX | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| OS | PFS | OS | PFS | ||||||||||||
| General data | n | HR | 95% CI | p | HR | 95% CI | p | n | HR | 95% CI | p | HR | 95% CI | p | |
| Age | ≤65 | 10 | ref. | ref. | 5 | ref. | ref. | ||||||||
| >65 | 24 | 2.142 | 0.459–9.994 | 0.332 | 1.775 | 0.494–6.378 | 0.379 | 20 | 1.675 | 0.370–7.584 | 0.503 | 0.552 | 0.171–1.783 | 0.321 | |
| Sex | male | 21 | ref. | ref. | 21 | ref. | ref. | ||||||||
| female | 13 | 0.281 | 0.060–1.301 | 0.104 | 0.330 | 0.091–1.191 | 0.090 | 4 | 0.374 | 0.049–2.884 | 0.345 | 0.337 | 0.044–2.579 | 0.295 | |
| ECOG PS before therapy | 0–1 | 29 | ref. | ref. | 21 | ref. | ref. | ||||||||
| 2–3 | 5 | 3.451 | 0.707–16.832 | 0.126 | 2.926 | 0.807–10.608 | 0.102 | 4 | 2 124 | 0.571–7.899 | 0.261 | 0.954 | 0.212–4.291 | 0.951 | |
| Nephrouretherectomy data | |||||||||||||||
| Stage | pTa-pT1-CIS | 17 | ref. | ref. | 1 | ref. | ref. | ||||||||
| pT2-pT4 | 17 | 7.115 | 1.504–33.659 | 0.013 | 23.899 | 3.087–185.035 | 0.002 | 22 | 1.000 | 0.0–14926.7 | 1.000 | 21.482 | 0.000–7.5 × 1019 | 0.888 | |
| Metastases | N0/M0 | 25 | ref. | ref. | 14 | ref. | ref. | ||||||||
| N+ or M+ | 9 | 4.891 | 1.379–17.345 | 0.014 | 8.250 | 2.742–24.820 | <0.001 | 9 | 3.065 | 0.923–10.181 | 0.068 | 3.651 | 1.237–10.773 | 0.019 | |
| Grade | 1–2 | 19 | ref. | ref. | 5 | ref. | ref. | ||||||||
| 3 | 15 | 5.060 | 1.325–19.323 | 0.018 | 7.670 | 2.114–27.833 | 0.002 | 16 | 1.379 | 0.297–6.412 | 0.682 | 0.945 | 0.258–3.453 | 0.931 | |
| Chemotherapy baseline data | |||||||||||||||
| Metastases | N0/M0 | - | - | - | 10 | ref. | ref. | ||||||||
| N+ or M+ | - | - | - | 14 | 6.722 | 1.410–32.049 | 0.017 | 8.985 | 2.309–34.961 | 0.002 | |||||
| Chemotherapy regimen: | Gem/Cis | - | - | - | 14 | ref. | ref. | ||||||||
| Gem/Carb | - | - | - | 11 | 0.907 | 0.296–2.777 | 0.864 | 1.893 | 0.658–5.448 | 0.237 | |||||
| Pretreatment serum MMP-7 level | |||||||||||||||
| serum MMP-7 | median cut-off * | 17 | ref. | ref. | 13 | ref. | ref. | ||||||||
| serum MMP-7 | median cut-off * | 17 | 3.324 | 0.874–12.644 | 0.078 | 1.694 | 0.585–4.900 | 0.331 | 12 | 1.270 | 0.425–3.797 | 0.669 | 0.799 | 0.267–2.394 | 0.689 |
| serum MMP-7 | ROC cut-off ** | 19 | ref. | ref. | 20 | ref. | ref. | ||||||||
| serum MMP-7 | ROC cut-off ** | 15 | 4.413 | 1.159–16.798 | 0.029 | 1.676 | 0.585–4.799 | 0.336 | 5 | 12.063 | 2.800–51.968 | 0.001 | 2.166 | 0.452–10.380 | 0.334 |
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Kovács, P.T.; Mayer, T.; Csizmarik, A.; Váradi, M.; Oláh, C.; Széles, Á.; Tschirdewahn, S.; Krafft, U.; Hadaschik, B.; Nyirády, P.; et al. Elevated Pre-Treatment Serum MMP-7 Levels Are Associated with the Presence of Metastasis and Poor Survival in Upper Tract Urothelial Carcinoma. Biomedicines 2022, 10, 698. https://doi.org/10.3390/biomedicines10030698
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Kovács PT, Mayer T, Csizmarik A, Váradi M, Oláh C, Széles Á, Tschirdewahn S, Krafft U, Hadaschik B, Nyirády P, et al. Elevated Pre-Treatment Serum MMP-7 Levels Are Associated with the Presence of Metastasis and Poor Survival in Upper Tract Urothelial Carcinoma. Biomedicines. 2022; 10(3):698. https://doi.org/10.3390/biomedicines10030698
Chicago/Turabian StyleKovács, Petra Terézia, Tamás Mayer, Anita Csizmarik, Melinda Váradi, Csilla Oláh, Ádám Széles, Stephan Tschirdewahn, Ulrich Krafft, Boris Hadaschik, Péter Nyirády, and et al. 2022. "Elevated Pre-Treatment Serum MMP-7 Levels Are Associated with the Presence of Metastasis and Poor Survival in Upper Tract Urothelial Carcinoma" Biomedicines 10, no. 3: 698. https://doi.org/10.3390/biomedicines10030698
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