Locally advanced gastric cancer (LAGC) are common gastrointestinal malignancies and are the third leading cause of cancer-related mortality worldwide[1]. Patients with stage IIC and IV gastric cancer have 5-year survival rates of 20.2% and 8.8%, respectively, with most patients diagnosed in the advanced stage due to the absence of signs and symptoms in early-stage disease[2]. Recent developments in chemotherapy (CT) have improved prognosis, even in patients with advanced gastric cancer. There has been a focus on neoadjuvant CT and, despite lacking prognostic and treatment response biomarkers, fluorouracil plus leucovorin, oxaliplatin, and docetaxel (FLOT) perioperative CT has led to improved prognosis in patients with LAGC[3-6]. Available evidence suggests that a favorable histopathological response to treatment may be a useful positive predictive marker in LAGC.Nonetheless, tumor response and prognosis are still difficult to predict before treatment initiation,making potential biomarkers crucial to predict patient prognosis and individualize treatment and follow-up. Many serum biomarkers for early and advanced gastric cancer have been reported:Carcinoembryonic antigen is a frequently used biomarker, as well as carbohydrate antigen 19-9 (CA 19-9), CA 72-4, CA 125, and alpha-fetoprotein, which are also helpful for prognosis and monitoring gastric cancer recurrence[7-9]. However, these biomarkers do not predict responses and survival outcomes because of their limited specificity and sensitivity in LAGC. Although many other serum biomarkers are under investigation (
small noncoding microRNAs; fibroblast growth factor 2 amplification; ecadherin, phosphatidylinositol-4,5-bisphosphate 3-kinase, catalytic subunit alpha, and phosphatase and tensin homolog mutations; mesenchymal epithelial transition gene amplification/overexpression; tumor protein p53 mutation; microsatellite instability), their cost-effectiveness ratio is also high, making them expensive to routinely use in clinical practice[10]. Recently, there has been an effort to validate blood ratios [neutrophil-to-lymphocyte (NLR), lymphocyte-to-monocyte (LMR), and platelet-to-lymphocyte(PLR)] as possible biomarkers, as they are routinely analyzed, cheap, and have known pathophysiological mechanisms associated with cancer development. Inflammation impacts carcinogenesis including tumor initiation, promotion, and metastization of solid and hematological malignancies.Blood immune and inflammatory cells (neutrophils, lymphocytes, platelets, and monocytes), as well as cytokines, play important roles in the tumor microenvironment, invasion, and metastization and are potential biomarkers worth being explored in the context of LAGC[11-14].
Lymphocytes seem to reflect the systemic inflammatory status, and some parameters using these cells predict survival outcomes in cancer patients[15-19]. With lymphocytes playing an important role in cancer immune monitoring and prevention, it appears that a pro-inflammatory microenvironment leads to impaired T-cell responses, mediated by cytokines, compromising cell-mediated immunity[20].Depending on the inflammatory cytokine mediating the environment, neutrophils may exert either antitumoral or protumoral activities[21]. Under acute inflammatory stimulus, activated neutrophils can undertake antitumoral activity, while under chronic inflammation, these neutrophiles can induce a tumor growth and metastization process. Cytokines such as interleukin-6, which is elevated in gastric cancer patients, can induce protumoral neutrophil activity[22]. This behavior might explain why there is a correlation between neutrophil count and prognosis. The effects of inflammatory responses mediated by cytokines also influence tumor-associated monocytes, another main regulator of cancer inflammation. Tumor cells induce monocyte differentiation into tumor-associated macrophages, weakening antitumor immune responses and stimulating migration and metastatic spread[23-26]. Peripheral monocyte serum levels are negatively associated with prognosis in different cancer types[27-29].
Footwear is important in many popular fairy tales, such as Cinderella s slipper, the worn-out shoes in The Twelve Dancing Princesses, and the red hot dancing shoes found in Snow White and the Seven Dwarfs. Seven league boots are popular modes of transportation in folklore and make an appearance on SurLaLune on the Annotations for Sleeping Beauty page. Return to place in story.
NLR, LMR, and PLR are inflammatory biomarkers that are independent prognostic factors of survival in several solid tumors, as their assessment is inexpensive[30,31]. Preoperative assessment of the NLR has the clinical potential to predict tumor progression and prognosis in patients with resectable gastric cancer and esophageal squamous cell carcinoma[32,33]. In recent studies, high PLR has been associated with tumor aggressiveness in patients with several malignancies, as well as poor overall survival (OS)and disease-free survival (DFS)[34-38]. Combined NLR and PLR also predicts CT response and prognosis in patients with advanced gastric cancer[39]. Lower LMR is independently associated with worse OS of several malignancies in the advanced setting and more aggressive tumor behavior[40-42].However, NLR, LMR, and PLR as predictors of response to CT have not been assessed in patients with resectable LAGC cancer.
Tumor regression grade (TRG) is a system used to evaluate residual tumor in patients administered preoperative therapies. TRG focuses on the quantity rather than location of the tumor, providing information on the response to therapies and predicting prognosis[43]. There are many different grading systems without global consensus[44-47]. Among various scores, the College of American Pathology (CAP) TRG score system, based on the relative amount between fibrosis and residual tumor,is widely applied in gastrointestinal cancers[48]. Some studies have suggested that patients with a lower TRG score (1-2 or 1-3) have better survival than those with a higher TRG score (3-5 or 4-5)[44,49,50].Based on the MAGIC trial, Smyth
[51] found that patients in the TRG 3-5 and node-positive group had worse OS than others, whereas patients with TRG 1-2 and node-negative had better OS.
Finally, treatment-associated toxicity is an important clinical factor to be considered in patients, with more emphasis in the elderly population. Although we did not find a correlation between the three ratios and early suspension of treatment due to toxicity, we demonstrate that patients in need of treatment suspension tend to have higher NLR and PLR values. The association with treatment toxicity could be an aspect worthy of future investigation.
We retrospectively analyzed patients with resectable LAGC treated with at least one preFLOT cycle,from 12 Portuguese hospitals. NLR, LMR, and PLR pre-treatment values were exploratory correlated with different variables, and with those statistically significant pre-treatment values were divided according to into high or low groups, determined by receiver operating characteristic curve, and evaluated regarding association to survival outcomes and response prediction. Relative risks and hazard ratios were calculated, with NLR, pathological complete response, T stage regression (TSR) and TRG as independent variables, and overall survival (OS) the dependent variable.
Participant oncological centers by region were as follows:South & Centre Region - Hospital Professor Doutor Fernando Fonseca, Centro Hospitalar Barreiro-Montijo, Centro Hospitalar Lisboa Ocidental,Centro Hospitalar Lisboa Central, Hospital da Luz de Lisboa, Hospital Beatriz ?ngelo, Hospital Garcia de Orta, Hospital Distrital de Santarém, Hospital do Espírito Santo de évora, Centro Hospitalar Universitário do Algarve; North Region - Centro Hospitalar de Trás-Os-Montes e Alto Douro, and Hospital da Senhora da Oliveira de Guimar?es. The exclusion criteria were:Age < 18 years,synchronous or metachronous cancer in other organs, and absence of detailed therapeutic information and unknown laboratory values for NLR, LMR, or PLR.
The database included demographic, histological, clinical, surgical, and pathological variables.Regarding age, patients were divided into elder (≥ 75 years) and non-elder (< 75 years) groups. This division was made due to the growing aging society in western countries, where frailty risk increases above 75 years of age[52]. Neutrophils, lymphocytes, monocytes, and platelets were considered absolute cell counts, based on the last blood sample drawn prior to initiation of preFLOT. NLR was determined by dividing neutrophil absolute count by lymphocyte absolute count, LMR was determined by dividing lymphocyte absolute count by monocyte absolute count, and PLR was determined by dividing platelet absolute count by lymphocyte absolute count[15-20]. Histological diagnosis and grade were considered,as well as tumor site and tumor-node-metastasis (TNM) stage, which was evaluated according to the 8
edition of the American Joint Committee on Cancer staging manual. Patients were staged before the initiation of preoperative therapy. All patients were clinically staged with thorax, abdomen, and pelvic computerized tomography scans; upper endoscopic ultrasound was not requested for additional staging, but if the information was available, it was considered for local staging. Patients were submitted to exploratory laparoscopy for staging purposes, where they were considered for local staging and exclusion of macroscopic peritoneal metastization. Surgical variables included type of resection, type of lymphadenectomy, and margins. Regarding systemic treatment, number of cycles,toxicity, and time until surgery were considered. Pathological tumor response was assessed considering TRG. As previously stated, several grade scoring systems are used, with CAP score being the most used in the participating institutions. To standardize the analysis, we simplified the scores into three categories:Complete tumor regression (pathological complete response), partial/incomplete tumor regression (pathological partial/incomplete response), and no evidence of regression (absence of pathological response). Complete tumor regression was also considered a pathological complete response (pCR). Clinical responses were compared to pathological response obtained with surgery, and tumor downstaging was considered comparing clinical and pathological staging, as at least one of the following:T stage reduction and/or N stage reduction (downstaging). Patients with maintenance or increase in either T or N were considered as not having downstaged. Patients’ period of survival was considered as time since histological diagnosis until death or last time seen alive, in months.
Data are represented as the relative and absolute frequencies, central tendency measures, and dispersion. Means regarding all ratios were compared using
-tests, and in case of non-normality through non-parametric Mann-Whitney tests, specifically for sex, age group (< 75 years
≥ 75 years),preFLOT suspension, progression under preFLOT, tumor downstaging, T and N regression, TRG, OS and mortality. Analysis of receiver operating characteristics (ROC) curve defined a cut-off value for group stratification, to facilitate patient stratification in the clinical practice. The areas under the curves were calculated to evaluate the predictive abilities of PLR to discriminate patients’ progressive systemic disease and mortality and of LMR to discriminate patients with T downstaging. High PLR was defined as > 141 for progression and > 144 for mortality; high LMR was defined as > 3.56 for T stage regression(TSR). Relative risk was calculated using Poisson regression, with the progression under preFLOT,mortality and TSR the dependent variables and PLR and LMR groups the independent variables.Pearson’s correlation coefficient was used to assess the association between NLR and OS. Kaplan-Meier estimator was used to compare survival curves considering several variables (pCR, TSR, and TRG) and log-rank tests were used to assess statistical significance. Cox regression was used to calculate hazard ratios, with NLR, pCR, TSR, and TRG being the independent variables, and OS the dependent variable.Significance level was established at 0.05. All statistical analyses were performed using SPSS software(version 26.0; IBM Corp. Released 2019. IBM SPSS Statistics for Windows; Armonk, NY, United states).This retrospective observational study was approved on May 19, 2021 by the Ethics Committee of Hospital Professor Doutor Fernando Fonseca (Approval No. 045/2021).
Patients’ demographics are described in Table 1. Two-hundred and ninety-five patients were included,with a mean age of 63.7 years (range:31-84 years), and 59.7% males (
= 176). Mostly adenocarcinomas(98.3%), while only 3 patients had non-specified carcinoma and 1 patient had squamous cell carcinoma.Poorly differentiated histology was identified in 40.9% (
= 121), while 25.3% (
= 75) were moderately differentiated and 8.8% (
= 26) well differentiated. Regarding Lauren classification, 51.4% (
= 152)were intestinal or mixed subtypes and 20.6% (
= 61) were diffuse subtype. Most were located in the stomach (
= 272; body:47%; antrum:33.8%; cardia:11.1%), 6.8% (
= 20) in the gastroesophageal junction and only 1% (
= 3) in the lower esophagus. Peritoneal lavage cytology was performed, prior to therapy initiation, in 253 patients (85.8%), with 42 missing data; of these, 6 patients had a suspicious cytology for neoplastic cells and 3 patients had a positive cytology, but all were considered for surgery in the absence of macroscopic peritoneal metastasis.
However, as he did not seem at all ferocious60, and only said gruffly: Good-evening, Beauty, she answered cheerfully and managed to conceal61 her terror
Among the 295 patients, the descriptive analysis revealed:Absolute neutrophile counts ranged from 1170 to 21290, with a mean ± SD of 6103 ± 3354; absolute lymphocyte count ranged from 200 to 9110,with a mean ± SD of 1890 ± 1014; absolute monocytes count ranged from 600 to 4440, with a mean ± SD of 585 ± 407; and absolute platelets count ranged from 25600 to 658000, with a mean ± SD of 268658 ±92373. NLR ranged from 0.48 to 99.5 and mean ± SD was 4.66 ± 7.1; LMR ranged from 0.33 to 143.33 and mean ± SD was 5.29 ± 9.2; and PLR ranged from 15.79 to 1260 and mean ± SD was 182.91 ± 148.19.
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Median number of preFLOT cycles was 4 (range:1-12). Suspension of treatment due to toxicity occurred in 22 patients (7.5%). Twenty-four patients (8.1%) progressed systemically under preFLOT.Median waiting time to surgery was 12 wk (range:6-33). Regarding patients with curative intent (
=271, 8 missing data):Total gastrectomy was performed in 49% of patients (
= 129), while 46% (
= 121)had subtotal gastrectomy, 4.1% (
= 11) had Ivory-Lewis esophagectomy and 0.8% (
= 2) had distal gastrectomy; complete standard lymphadenectomies were performed in 96% (D2:85.4%,
= 193; D1+:10.6%,
= 24), with 45 missing data; R0 resection was achieved in 91.9% patients (
= 249), with 9 missing data. TSR occurred in 46.5% (
= 126; 17 missing data), and N stage regression occurred in 57.6% (
= 156; 9 missing data). Tumor downstaging (TD) defined as TSR and/or N stage regression in comparison of imagiological/clinical
pathological staging, was observed in 61% patients (
= 161),while 39% didn’t respond (
= 53) or progressed (
= 50), with 7 missing data.
Of the 239 surgical specimens evaluated for TRG, using our standardized classification, 46.4% (
=111) showed partial/incomplete response, 33.5% (
= 80) no response, and 20.1% (
= 48) pCR. Mean OS of general population was 35.1 ± 1.2 mo, with a mean follow-up time of 19.4 ± 0.7 mo. At the end of study time, 233 patients (79%) were alive.
A statistically significant association between NLR and age group (< 75 years
≥ 75 years) and sex was not found. However, the difference in means was considerable for both variables (NLR mean in male patients = 4.18
female patients = 5.37,
= 0.073; mean in patients ≥ 75 years = 4.21
patients < 75 years = 4.72,
= 0.37) in Table 2. No association was found between NLR and early suspension of treatment due to toxicity. However, difference in means was clinically significant (NLR mean in patients with suspension = 5.32
without suspension = 4.61;
= 0.336). Although TD was not associated with any ratio, difference in means regarding NLR was considerable (mean in patients with TD = 4.93
without TD = 3.57;
= 0.081). NLR was not associated with T or N stage regression, although difference in means was considerable regarding N stage regression (NLR mean in patients with N regression =5.02
without N regression = 4.06;
= 0.119).
LMR was not associated with sex and age group, but showed a considerable difference between age groups (LMR mean in patients ≥ 75 years = 4.68
patients < 75 years = 5.37,
= 0.335). An association between LMR and TSR was found (
= 0.021). Among the 264 patients, LMR ranged from 0.33 to 143.33,with mean ± SD LMR value in patients with T regression (
= 126) of 4.38 ± 3.64 and patients without TSR (
= 138) of 6.5 ± 12.84. According to ROC analysis, optimal cut-off of LMR was established at 3.56,with a sensitivity/specificity of 0.594 and 0.421. Patients were divided into the following groups according to the cut-off values for LMR:High (> 3.56;
= 134) and low LMR (≤ 3.56;
= 130). High LMR patients have 1.4-times higher relative risk of achieving TSR than low LMR patients [95% confidence interval (CI):1.01-1.99;
= 0.043] in Table 3.
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PLR did not reveal a statistically significant association between sex and age groups, but showed a considerable difference between age groups (PLR mean in patients ≥ 75 years = 214.98
patients < 75 years = 178.88;
= 0.323). Considering early suspension of treatment due to toxicity, PLR did not show to be associated, although difference in means was considerable (PLR mean in patients with suspension= 208.26
without suspension = 180.87;
= 0.144). We also found PLR to be associated with systemic progression during preFLOT (
= 0.022). PLR ranged from 15.79 to 1260, with a mean ± SD PLR value in patients with systemic progression during preFLOT (
= 24) of 251.94 ± 173.3 and in patients without progression (
= 271) of 176.8 ± 144.54. According to ROC analysis, optimal cut-off of PLR was established at 141 for progression, with a sensitivity/specificity for the PLR of 0.667/0.5. Patients were divided into the following groups according to the cut-off values for PLR:High (> 141;
= 152) and low PLR (≤ 141;
= 143). High PLR patients have 2.2-times higher relative risk of progressing under preFLOT (95%CI:0.89-5.26;
= 0.088).
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The present study had several limitations. First, this exploratory study involved a retrospective analysis in a relatively small population (
= 295); consequently, larger validation studies are needed to confirm the potential of these ratios. Second, with NLR, LMR and PLR associated with the inflammatory response, patients under anti-inflammatory effects from other medications could potentially bias the results. Third, we did not control the process and timing of blood collection and analysis; expectedly,blood analysis were undertaken before initiation of systemic treatment, but the period of time since blood results until treatment initiation can widely vary, and patients inflammatory state can be also volatile; depending on the length of time between blood collection and analysis, the composition of blood cells could be altered or destroyed, compromising correct estimation of the different ratios.Fourth, clinical and pathological staging were observational dependent:Every participant hospital was responsible for the evaluation process of its patients, and even different gastroenterologists, radiologists and pathologists evaluated these patients, with possible subjective assessments that could bias the results. Fifth, our median waiting time to surgery was 12 wk, being the recommended interval 4-6 wk(used in the FLOT4-AIO trial); this could possibly be a confounding variable and our results should be replicated prospectively for confirmation.
NLR was found to be associated with OS time, with a weak positive correlation (
= 0.143;
= 0.014):For every one unit increase in NLR, there was a 0.1 mo increase in mean OS. Nevertheless, through Cox regression, there was no evidence of survival benefit between OS and NLR in Table 3. Neither LMR or PLR were associated with OS. Regarding pCR, the three ratios did not show a statistically significant association nor reveal considerable difference in means. We also did not find an association between pCR and OS; however, difference of means was considerable (mean OS without pCR of 14.9 mo
18.4 mo with pCR;
= 0.428). Although not statistically significant, patients without pCR seem to have higher risk (2.1 times) of dying than patients with pCR (95%CI:0.8-5.2;
= 0.129) in Table 3. With TRG categories as partial/incomplete or complete tumor regression
no evidence of regression to treatment,there was an association with OS (
= 0.009), with a survival of 39 mo
28.5 mo, respectively (95%CI:33.6-38.4;
< 0.001) in Figure 1A. The univariate Cox regression revealed that patients without evidence of tumor regression had 2.8-times higher risk of dying than patients with partial or complete tumor regression (95%CI:1.6-5,
< 0.001). OS was found to be associated with TSR (
= 0.03). Patients with T regression had better OS than those without T regression (39.9 mo
32.7 mo, respectively;
= 0.015) in Figure 1B. Univariate Cox regression revealed that patients without TSR had 2.1 times higher risk of dying than patients with TSR (95%CI:1.14-3.96;
= 0.017).
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Although we did not find evidence of an association between LMR and prognosis, we showed an association between LMR and TSR, with high LMR patients having higher risk of achieving T stage reduction than low LMR patients. Also, our data showed an association between OS and TSR,documenting that patients without TSR had 2.1-times risk of dying, which we could indirectly interpret that patients with high LMR could have a better prognosis. We know that higher TNM staging,specifically T staging, is associated with less survival probability, crosswise solid and hematological tumors, so we could indirectly interpret that patients with low LMR are less likely to have TSR and,consequently, lower survival odds, but this needs to be further investigated.
Regarding cancer-related mortality and morbidity, gastric cancer is still one of the main causes,despite the development of new approaches, surgery, and systemic treatment-wise[53]. Survival outcomes vary considering patients in different conditions, degrees of invasion and differentiation, as well as TNM stages. The importance of searching for new treatment strategies and their validation, with the objective of improving survival outcomes, relies on the considerable number of patients with advanced disease at diagnosis. The perioperative FLOT strategy, studied by Al-Batran
[3]demonstrated a palpable benefit providing better outcomes. Nonetheless, it is still difficult to predict tumor response to systemic treatment and identify predictive factors to stratify patients into risk groups,which would be important to optimize individualized treatment and follow-up.
Several studies have described a correlation between elevated neutrophil count or high NLR and worse prognosis, as well as progression of disease[39,54]. Our findings seemed to slightly contradict the literature, as we found NLR had a weak positive correlation with OS, revealing that the higher the calculated NLR is, a better OS is expected, but Cox regression did not find an association between NLR and death status. Some studies have published reference values and prognostic correlations for NLR.However, these studies were conducted using small cohort of patients with different races, mainly Asian patients. It is possible differences could be found regarding other populations, specifically European patients. Also, it seems that in the literature there is a consistent difference in sex and age group, which our study supports despite not reaching statistical significance (women and younger patients have a higher NLR mean than men and older patients), but this needs to be replicated in further investigation[55]. This reveals the need for more validation studies in the European population.
LMR has been suggested to be an important factor for predicting prognosis in patients with hematologic and solid malignancies, such as lung and colon cancers[41,42,56-58]. Lower LMR is independently associated with poor OS in gastric cancer patients undergoing radical gastrectomy, and low LMR patients have a higher hazard ratio for both OS and DFS than high LMR[58]. This suggests that lower LMR might be associated with a more aggressive tumor behavior, higher surgical mortality rates, and worse long-term survival[59,60].
In summary, our statistically significant results showed that:NLR was weakly (positive) correlated with OS time, but there was no evidence of survival benefit; LMR was associated with TSR; high LMR patients had 1.42-times relative risk of TSR; PLR was associated with systemic progression under preFLOT, as well as mortality; patients without TSR had 2.1-times risk of dying; and patients without pathological tumor regression had 2.8-times higher risk of dying.
N stage regression was not found to be associated with the three ratios, but NLR and PLR values seem to be clinically considerable, as patients with N reduction present higher ratio values. Further studies are needed to understand whether advanced TNM staging is associated with higher NLR and PLR ratio values[15,61]. Combining T and N stages to assess TD did not reveal a statistically significant association, despite patients that achieved TD tend to have higher NLR values.
PLR has been widely associated with different stages of tumor development, systemic treatment response and prognostic survival outcomes of cancer patients, namely in LAGC[61-63]. Nonetheless,specific physiopathology is complex and remains unclear. One plausible hypothesis is that a decreased PLR could reflect tumor disadvantage status, such as inflammatory status, immune disorders,malnutrition and thrombosis[64-66]. Low PLR has been associated with less aggressive clinicopathological features, including decreased depth of invasion, less lymph node metastasis, and early tumor stage, while higher risk of lymph node metastasis, increased serosa invasion risk, and advanced stage disease is associated with elevated PLR in patients with gastric cancer[15,61]. It has also been considered a prognostic factor, with high PLR patients being associated with worse OS[39].
Our study found an association between PLR and disease progression during preFLOT, showing that patients with high PLR have higher risk of progressing under CT. We also found a correlation between death and PLR, with high PLR patients having higher risk of dying than low PLR patients. Regarding tumoral response to CT, none of the ratios was associated with pCR achievement, albeit in TRG evaluation, PLR showed a considerable difference in means despite not being statistically significant,with patients without pathological response to CT presenting higher PLR values. Despite not finding an association between pCR and OS, TRG evaluation revealed an association with OS, documenting that patients without pathological tumor regression had 2.8 times higher risk of dying. Although not statistically significant, we could infer that patients with high PLR did not respond so well to CT and could have worse prognosis, despite further analysis is needed. We can extrapolate that these data show a more biologically aggressive tumor and that this might be a reasonable motive for a more active surveillance in these higher risk patients, to detect early progression.
This goal of this exploratory study was to assess NLR, LMR, and PLR as potential biomarkers for predicting response and survival outcomes in resectable LAGC patients, determined before preoperative CT. To the best of our knowledge, this is the first study to analyze the clinical potential of these ratios in a Portuguese population in a preoperative setting.
Critic Steven Jones considers the daughter to be a typical persecuted heroine in fairy tale style. First she finds herself in danger thanks to her father s boasting. Then she marries the king after trial and tribulation along with the promise to give up her firstborn. Finally she fights to save her child by accomplishing the seemingly impossible task of naming her former helper (Jones 1993, 18).Return to place in story.
This study gathered information suggesting that these biomarkers could be suited to stratify patients by risk to preoperative CT. Knowing the difficulty to predict tumor response before initiation of systemic treatment using clinical and pathological data, we focused on the potential of NLR, LMR and PLR, already reported as systemic inflammatory and immune cancer environment important pieces.Our study stands out from others due to the analysis of these already known blood ratios in a curative setting of gastric cancer, with an approach to the CT response prediction. It has a good representation of Portugal population, being also one of the few studies undergone in a European population:We should keep in mind that possible genetic differences regarding gastric cancer and also inflammation/immune mechanisms should be considered as influencers of the blood ratios analysis (
Asian or Latino-American patients). Due to lack of information regarding treatment prediction in resectable gastric cancer (even less information regarding the European population in this setting), it would be interesting to retrospectively analyze these blood ratios in the phase II/III FLOT4-AIO trial.
PLR was not associated with T and/or N stage regression, although difference in means was considerable regarding N stage regression (PLR mean in patients with N regression = 184.45
without N regression = 166.13;
= 0.157). Even though this ratio was not associated with TRG evaluation,difference in means regarding PLR was considerable (PLR mean in patients with partial/incomplete or complete tumor regression to treatment = 180.4
no evidence of regression to treatment = 189.73;
=0.305). This ratio was also associated with mortality (
= 0.013), regardless of surgery. The mean ± SD PLR value in patients dead at the end of the study time analysis (
= 62) was 210.27 ± 142.87 and in patients alive at the end of the study time (
= 233) was 175.64 ± 149.48. According to ROC analysis,optimal cut-off of PLR was established at 144 for survival status, with a sensitivity/specificity of0.613/0.481. Patients were divided into the following groups according to the cut-off values for PLR:High (> 144;
= 152) and low PLR (≤ 144;
= 143). High PLR patients have 1.5 times higher relative risk of dying than low PLR patients, although not statistically significant but the 95%CI lower limit is near 1(95%CI:0.92-2.55;
= 0.103).
We believe that the NLR, LMR, and PLR could be important biomarkers, and that further prospective investigation is needed to validate these ratios and possibly develop a score that could help in the decision-making process in the clinical management of patients with resectable LAGC.
Fluorouracil plus leucovorin, oxaliplatin, and docetaxel (FLOT) perioperative regimen became the standard of care in resectable locally advanced gastric cancer (LAGC), but there is still a need for prognostic and predictive response biomarkers. Blood ratios, such as neutrophil-to-lymphocyte (NLR),lymphocyte-to-monocyte (LMR) and platelet-to-lymphocyte (PLR) ratios are known prognostic biomarkers in several solid tumors. Tumor regression grade (TRG) is a system used to evaluate residual tumor in patients submitted to preoperative therapies, providing information on the response to therapies and predicting prognosis.
So Tsarevitch Ivan wiped away his tears and a third time mounted the Wolf s back. Take me, Gray Wolf, he said, across three times nine lands to the Tsarevna who is called Helen the Beautiful. And straightway the Wolf began running, a hundred times swifter than the swiftest horse, faster than one can tell in a tale, until he came to the country of the beautiful princess. At length he stopped at a golden railing surrounding a lovely garden.
This study investigated the prognostic and predictive significance of pre-treatment blood ratios in resectable LAGC.
This study assessed the potential value of NLR, LMR, and PLR in predicting survival outcomes and response to preoperative FLOT (preFLOT) regimen in resectable LAGC.
This was a multicentric retrospective study including 295 patients from 12 Portuguese oncological centers, diagnosed with resectable LAGC [histologically confirmed advanced clinical stage cT2 or higher, or nodal-positive stage (cN+), or both], who underwent curative intent surgery after at least one preoperative FLOT (preFLOT) cycle, since its initial use in institutions until December 31, 2020. Data collection ended in April 2021, with a minimum follow-up time of 1 mo after surgery.
We included 295 patients in this study. NLR was correlated with time of survival (r = 0.143; P = 0.014).High PLR was defined as > 141 for progression and > 144 for mortality; high LMR was defined as > 3.56 for TSR. PLR was associated with systemic progression during FLOT (P = 0.022) and mortality (P =0.013), with high PLR patients having 2.2 times higher risk of progression [95% confidence interval (CI):0.89-5.26] and 1.5 times higher risk of mortality (95%CI:0.92-2.55). LMR was associated with TSR and high LMR patients have 1.4 times higher risk of achieving TSR (95%CI:1.01-1.99). OS benefit was found with TSR (
= 0.015) and partial/complete TRG (
< 0.001). Patients without TSR as well as no evidence of pathological response have 2.1 (95%CI:1.14-3.96) and 2.8-times (95%CI:1.6-5) higher risk of death.
NLR, LMR, and PLR are significant biomarkers that are potential indicators for prognosis and treatment response prediction.
In further investigation, validation of these blood ratios is important, as well as integration into risk scores that could help clinicians in the decision-making strategy in the clinical management of patients with resectable LAGC.
Mom, the kids asked, who was that? Why did you give her our flowers? Is she somebody s mother? The mother said she didn t know the old woman. But it was Mother s Day, and she seemed so alone, and who wouldn t be cheered by flowers? Besides, she added, I have all of you, and I still have my mother, even if she is far away. That woman needed those flowers more than I did.
We would like to express our gratitude to Dr. Patrícia Soares, from Escola Nacional de Saúde Pública, for all the help and guidance in the statistical analysis of this study.
48.An aged woman: The heroine will meet three aged women, see the note about the pattern of three above, who will give her guidance and gifts to help her with her quest. Old crones are often sources of wisdom and advice in fairy tales, as well as gifts to help younger characters on quests. Sometimes the old women are gods, fairies, or angels in disguise. Return to place in story.
In Cupid and Psyche43, Venus is jealous of Psyche s beauty and tries to have her married to the ugliest creature, but her son Cupid falls in love with Psyche and marries her instead.Return to place in story.
Tomás TC designed and conducted the research, formally processed the statistical data, and wrote the paper; Vitorino M, Vicente R, Grama?a J, Oliveira AG, Luz P, Spencer AS, Eiriz I, Liu P, Mendon?a J, Costa LL, Baleiras M, Dinis M, Correia M, and Padr?o T performed the investigation and data collection; Atalaia G, Silva M, and Fiúza T supervised and validated the report.
The study was reviewed and approved by the Ethical Committee for Health of Hospital Professor Doutor Fernando Fonseca (approval No. 045/2021).
The informed consent statement was waived.
All the authors report no relevant conflicts of interest for this article.
No data are available.
The king often lost his patience, and was determined8 to see his daughter, but the queen always put him off the idea, and so things went on, until the very day before the princess completed her fourteenth year
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Tiago Cruz Tomás 0000-0002-9535-8931; Inês Eiriz 0000-0002-1760-3436; Marina Vitorino 000-0002-8058-1495; Rodrigo Vicente 0000-0001-6780-4271; Jo?o Grama?a 0000-0001-6968-0436; Alicia Guadalupe Oliveira 000-0003-0833-0736; Paulo Luz 0000-0002-3905-0238; Mafalda Baleiras 0000-0003-2830-4287; Ana Sofia Spencer 0000-0002-1413-702X;Luísa Leal Costa 0000-0002-2966-9192; Patrícia Liu 0000-0002-2180-9779; Joana Mendon?a 0000-0002-3188-5767; Magno Dinis 0000-0001-7433-2460; Teresa Padr?o 0000-0002-4199-7252; Marisol Correia 0000-0002-2554-8254; Gon?alo Atalaia 0000-0002-0868-3622; Michelle Silva 0000-0002-2242-1223; Teresa Fiúza 0000-0002-6139-6550.
Wang JJ
Filipodia
Wang JJ
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World Journal of Gastrointestinal Oncology2022年7期