Published online Feb 27, 2024. doi: 10.4240/wjgs.v16.i2.260
Peer-review started: November 3, 2023
First decision: December 18, 2023
Revised: December 26, 2023
Accepted: February 3, 2024
Article in press: February 3, 2024
Published online: February 27, 2024
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This editorial contains comments on the article “Correlation between preoperative systemic immune inflammation index, nutritional risk index, and prognosis of radical resection of liver cancer” in a recent issue of the World Journal of Gastro
Core Tip: The systemic immune-inflammation index and geriatric nutritional risk index have significant survival predictive value in both palliative treatment and radical surgery settings. The underlying mechanisms of their possible predictive properties lie in the field of essential cancer features. Those features provide tumor nutrition, growth, and distribution throughout the body, such as vascular invasion. On the other hand, they are associated with the ability of patients to resist tumor progression and development of complications in both postoperative and cancer-related settings. The article is of considerable interest. It would be helpful to continue the study follow-up for 2 years or longer.
- Citation: Tchilikidi KY. Actuality and underlying mechanisms of systemic immune-inflammation index and geriatric nutritional risk index prognostic value in hepatocellular carcinoma. World J Gastrointest Surg 2024; 16(2): 260-265
- URL: https://www.wjgnet.com/1948-9366/full/v16/i2/260.htm
- DOI: https://dx.doi.org/10.4240/wjgs.v16.i2.260
Despite recent advances in diagnosis and treatment, survival of patients with hepatocellular carcinoma (HCC) is still low even after radical surgery. Of the primary liver cancer types, HCC is the most frequent, and advanced disease at the time of patient presentation to the oncologist is usual because early symptoms are few and nonspecific. The prevalence of some malignancies has decreased, but HCC prevalence has increased over time[1]. Nevertheless, diagnosis of resectable tumor is critical for patients’ survival. Radical surgery gives the chance to get long term survival for patients with resec
Hu et al[16] introduced SII in 2014 for HCC patient prognosis. SII calculation formula is SII = neutrophil count × platelet count/lymphocyte count[16,17]. According to Giese et al[18], enzymes, chemokines, and cytokines released by neutr
Blood cell | Impact |
Neutrophils | Release cytokines, chemokines, and enzymes, degrade extracellular matrix, reduce cell adhesion, and create conditions for tumor cell invasion; promote the adhesion of tumor cells to endothelial cells through physical anchoring that results to the migration of tumor cells[18,19] |
Platelets | Pro-angiogenic factors from platelets enhance tumor angiogenesis to meet tumor cells’ supply needs; could form a protective film on the surface of tumor cell that allows: (1) Avoid blood flow damage as well as immune system attack; and (2) Induce the epithelial-mesenchymal transformation of tumor cells that is critical for invasiveness[19,20] |
According to Miyata et al[22] macrovascular invasion increases postoperative recurrence risk in liver carcinoma patients by 15 times, whereas microvascular invasion (MVI) does it by 4.4 times[19,22]. Long ago macrovascular invasion, the appearance of a gross tumor thrombus in the main branches of the portal vein[23] became an unquestionable sign of poor survival. MVI is more complicated. Iguchi et al[24] found that only high MVI (> 50 tumor cells suspended in blood vessels) was a prognostic risk factor. MVI is defined in the guidelines for the standard pathological diagnosis of primary liver cancer in China (2015 edition) as > 50 malignant cells in the vessel for the solid nest with endothelial cells lining[25] is widely recognized.
Wu et al[19] in their meta-analysis of seven studies found the following results. The summary data of five studies found that vascular invasion was more frequent in HCC patients with high SII than in those with low SII (heterogeneity was insignificant: P = 0.511). Two studies reported the relationship between SII and MVI. MVI was more likely to occur in patients with high SIIs compared with HCC patients with low SIIs (P = 0.045)[19,23,24]. Four studies reported the relationship of SII with tumor diameter. HCC patients with high SIIs group had larger tumor diameters than patients with low SIIs (odds ratio = 2.88, 95%CI: 1.73-4.80, P = 0.000)[26,27]. A study by Li et al[15] confirmed published results that patients with higher SIIs had a higher risk of worse survival.
In 2014, Hu et al[16] were the first to report the predictive value of SII for HCC patients who underwent curative resection. In that study SII was associated with vascular invasion, early recurrence, and a larger tumor size, indicating a more aggressive phenotype. Subsequently, more cancer cells might migrate into the bloodstream and ultimately colonize distant tissues. Therefore, authors explain the high recurrence rate in patients with high SII scores by the increased level of circulating tumor cells in the bloodstream along with reduced circulating tumor cell clearance[16].
In the setting of liver transplantation, the results are somewhat controversial. Two reports found SII as a potent index in predicting HCC patients’ survival[24,28]. On the other hand, Cui et al[29] compared NLR, platelet-lymphocyte ratio (PLR), SII and the systemic inflammatory response index (SIRI), defined as monocyte count × neutrophil count/lymp
Evaluation of pretreatment SII in HCC patients with transarterial chemoembolization (TACE) started in 2015 shortly after SII was reported as a prognostic factor and then continued in the following years[30]. Li et al[31] published a meta-analysis of nine studies with 3557 HCC patients after TACE. They found that after TACE in HCC patients with a higher pretreatment SII vs those with lower SII overall survival (OS) as well as progression-free survival (PFS) were poorer (P < 0.001 and P = 0.01, respectively). There was a significant association of poor OS after TACE with high pretreatment SII. The authors performed subgroup analyses that showed country of the study, patient age, Child-Pugh score, alpha fetoprotein adjustment, sample size, or SII cutoff value did not significantly impact the association (P < 0.05)[31].
In 2005, Bouillanne et al[32] proposed the GNRI. The GNRI is calculated as: GNRI = [1.489 × albumin (g/L) + 41.7 × actual weight/ideal weight]. In recent years, investigators began to use it for prognosis of postoperative complications and survival in different cancer types[11,33,34]. In 2018, Li et al[35] published a report on HCC elderly patients with a hepatitis B etiology. That retrospective study enrolled 261 HCC patients after hepatectomy. They reported that severe postoperative complications as well as liver failure were more frequent in patients with a lower GNRI (P < 0.001 and P < 0.001, respectively). Also, a low preoperative GNRI also decreased OS (multivariate Cox regression analysis, P < 0.001). In addition, patients with a GNRI of < 82 were recognized as a high risk group. Patients with a GNRI between 82 and 92 were recognized as a moderate risk group. In the settings of liver failure and severe postoperative complications multivariate logistic regression analysis reported them both as an independent risk factors[35]. The authors concluded that in elderly HCC patients, severe postoperative complications including liver failure were more frequent in those with a low preoperative GNRI, and lower GNRI values before radical surgery led to worse OS in hepatectomy patients[35].
Kanno et al[36] estimated retrospectively the use of preoperative GNRI in 346 patients with HCC of different etiology after hepatectomy. They evaluated OS and PFS. They found that PFS and OS were positively associated with a better GNRI (P = 0.0003 and P = 0.0211, respectively). Multivariate analysis showed that the GNRI was an independent factor for PFS and OS prediction and estimation (P < 0.0001, and P = 0.0335, respectively)[36].
There have not been many reports of the prognostic value of SSI combined with GRNI, and mainly in malignancies other than HCC[37]. That is why the article “Correlation between the preoperative systemic immune inflammation index, nutritional risk index, and prognosis of radical resection of liver cancer”[15] in a recent issue World Journal of Gastrointestinal Surgery is of considerable interest. They estimated the above indices over a 1-year survival period. It would be actual to continue the research into 2-year period and latter. Because even after TACE some previous reports showed strong prognostic association in less than 24 months settings and did not show that after 24 months[31]. In addition, radical surgery requires 3- and 5-year survival estimation.
HCC patients are a special population that requires increased attention. SII and GNRI have significant survival prediction value in both palliative treatment and radical surgery settings. The underlying mechanisms of heir possible predictive properties lie in the field of essential cancer features that provide tumor nutrition, growth, and distribution throughout the body, such as vascular invasion. On the other hand, they are associated with the possibility of patient to resist tumor progression and development of complications in both postoperative and cancer-related settings. The article of Li et al[15] is of considerable interest. It would be helpful to continue the research over 2 years of follow-up and more. External validation of data is necessary.
Provenance and peer review: Invited article; Externally peer reviewed.
Peer-review model: Single blind
Specialty type: Gastroenterology and hepatology
Country/Territory of origin: Russia
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P-Reviewer: Tiejun W, China; Zhao H, China S-Editor: Wang JJ L-Editor: Filipodia P-Editor: ZhangYL
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