Your new experience awaits. Try the new design now and help us make it even better

ORIGINAL RESEARCH article

Front. Pharmacol., 12 December 2025

Sec. Experimental Pharmacology and Drug Discovery

Volume 16 - 2025 | https://doi.org/10.3389/fphar.2025.1726967

This article is part of the Research TopicAdvances in Biomarkers and Drug Targets: Harnessing Traditional and AI Approaches for Novel Therapeutic MechanismsView all 21 articles

Exploring HSP90α and hs-CRP using AI models to predict prognosis in advanced hepatocellular carcinoma treated with PD-1 inhibitors and targeted therapy

Zhen-Ying Wu&#x;Zhen-Ying Wu1Xueting Li&#x;Xueting Li2Lu Yang&#x;Lu Yang3Yuhui ShiYuhui Shi2Xianguo LiuXianguo Liu2Lianbin WenLianbin Wen4Yanqiong SongYanqiong Song5Wanyun DuWanyun Du6Yulin TuYulin Tu7Qian WeiQian Wei8Junqi LiuJunqi Liu9Hongyan Li,
Hongyan Li10,11*Pan Wang
Pan Wang12*
  • 1Department of Medical Administration, Panzhihua Central Hospital, Panzhihua, Sichuan, China
  • 2Department of Oncology, 363 Hospital, Chengdu, China
  • 3Department of Oncology, Chongqing General Hospital, Chongqing University, Chongqing, China
  • 4Department of Geriatric Cardiology, Sichuan Academy of Medical Sciences and Sichuan Provincial People’s Hospital, Chengdu, China
  • 5Department of Radiotherapy, Sichuan Cancer Hospital and Institute, Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
  • 6Department of Pharmacy, Southwest Medical University, Luzhou, China
  • 7Department of Ophthalmic Optics, Southwest Medical University, Luzhou, China
  • 8Department of Medical Imaging, Southwest Medical University, Luzhou, China
  • 9Basic Medicine College, Panzhihua University, Panzhihua, China
  • 10Department of Anesthesiology, The Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, Luzhou, China
  • 11Luzhou Key Laboratory of Research for Integrative on Pain and Perioperative Organ Protection, Luzhou, China
  • 12Clinical Skills Center, The Affiliated Hospital, Southwest Medical University, Luzhou, China

Objective: This study investigates the roles of heat shock protein 90α (HSP90α) and high-sensitivity C-reactive protein (hs-CRP) in the progression and prognosis of advanced hepatocellular carcinoma (HCC) patients undergoing immunotherapy. By integrating these biomarkers with artificial intelligence (AI), we aim to elucidate the complex interactions between tumor stress, immune responses, and tumor progression.

Methods: This retrospective analysis includes 644 patients with advanced HCC who received PD-1 inhibitors and targeted therapy across 3 tertiary hospitals in China from 2016 to 2023. The patients were randomly divided into training (70%) and validation (30%) sets. Independent prognostic factors for overall survival (OS) were identified using LASSO and stepwise Cox regression. Five machine learning models were built, and their performance was evaluated using Receiver Operating Characteristic (ROC) curves, Decision Curve Analysis (DCA), and calibration curves.

Results: Patients with high HSP90α expression had a median OS of 7.7 months compared to 20.6 months for those with low expression (p < 0.001). Similarly, high hs-CRP levels were associated with OS of 11.6 months versus 30.8 months for low CRP (p < 0.001). LASSO and stepwise Cox regression identified age, CRP, HSP90α, Child-Pugh classification, tumor number, metastatic (M) status, and portal vein tumor thrombosis (PVTT) as independent prognostic markers. The Random Survival Forests (RSF) model achieved the highest C-index of 0.679, and in the validation set, it demonstrated AUC-ROC values of 0.803 at 6 months, 0.801 at 12 months, and 0.761 at 18 months. The RSF model demonstrated good calibration across all time points, and DCA showed consistently higher net benefit compared with “Treat All” and “Treat None” strategies. Additionally, High levels of CRP and HSP90α were also associated with advanced tumor stage and higher Child-Pugh classification.

Conclusion: HSP90α and hs-CRP, plays a critical role in the prognosis of advanced HCC. Integrating these biomarkers with machine learning models enhances OS prediction accuracy, offering a personalized approach to cancer treatment.

Introduction

Hepatocellular carcinoma (HCC) remains a major global health challenge, ranking as one of the most lethal malignancies (Ganesan and Kulik, 2023). Most patients present with advanced-stage disease, for which curative treatments are no longer feasible (Li H. et al., 2025). In recent years, systemic therapy—particularly immune checkpoint inhibitors (ICIs) and molecular targeted agents—has dramatically reshaped the therapeutic landscape of advanced HCC (Jiang et al., 2024). Combination regimens such as atezolizumab plus bevacizumab or camrelizumab plus apatinib have become standard first-line options, markedly improving overall survival (OS) (Finn et al., 2020; Xia et al., 2022). Nevertheless, responses to immunotherapy remain heterogeneous, and reliable biomarkers to predict clinical outcomes are still lacking.

Increasing evidence suggests that tumor stress is not a passive factor but an active regulator of tumor immunity. Chronic stress, sympathetic nervous activation, and stress-induced inflammation can modulate systemic immune responses, shaping both tumor progression and therapeutic efficacy (Oura et al., 2021; Li W. et al., 2025). Circulating biomarkers such as heat shock protein 90α (HSP90α) and high-sensitivity C-reactive protein (hs-CRP) provide an accessible window into this stress–inflammation axis (Su et al., 2022; Zhou et al., 2019; Iida et al., 2022). HSP90α, a stress-inducible molecular chaperone, stabilizes multiple oncogenic and immune checkpoint–related proteins, while hs-CRP, an IL-6–driven acute-phase reactant, reflects systemic inflammatory activity under neuroendocrine influence (Liu et al., 2015).

Understanding how tumor stress interacts with immune modulation could help refine treatment decisions in advanced HCC. However, traditional statistical models often fail to capture the complex, nonlinear interactions between stress, inflammation, and tumor immunity (Su et al., 2025). To address this limitation, the present study integrates artificial intelligence (AI) to evaluate the predictive and prognostic value of HSP90α and hs-CRP in patients receiving immunotherapy combined with targeted therapy (Wang et al., 2025; Xu J. et al., 2025).

By integrating clinical variables and biological markers through AI, this study aims to construct a robust prognostic model to predict the outcomes of advanced hepatocellular carcinoma treated with immunotherapy.

Methods

Patients and study design

This retrospective analysis includes 644 patients with advanced HCC who received PD-1 inhibitors and targeted therapy across 3 tertiary hospitals in China from 2016 to 2023.

Inclusion criteria were as follows:

1. Pathologically or radiologically confirmed diagnosis of advanced or unresectable HCC according to the American Association for the Study of Liver Diseases (AASLD) criteria;

2. Child–Pugh class A or B liver function;

3. Available baseline serum levels of HSP90α and hs-CRP measured approximately 1 month prior to treatment initiation.

Exclusion criteria included:

1. Concurrent diagnosis of other malignant tumors;

2. Previous liver transplantation or concurrent radiotherapy during systemic therapy;

3. Severe infection, autoimmune disease, or uncontrolled cardiovascular disease;

4. Incomplete clinical or laboratory data;

5. Loss to follow-up within 3 months after treatment initiation.

All procedures were performed in accordance with the ethical standards of the Declaration of Helsinki. The study protocol was reviewed and approved by the Ethics Committee of the Affiliated Hospital of Southwest Medical University (KY2025340). Written informed consent was obtained from all participants before treatment.

Treatment

All patients received combination therapy with PD-1 inhibitors plus targeted therapy, which was continued until radiographic disease progression, unacceptable toxicity, or death.

OS was the primary endpoint of this study and was defined as the time interval from treatment initiation to death from any cause or last follow-up.

HSP90α and hs-CRP

We first categorized patients into two groups based on the optimal cutoff points of HSP90α and hs-CRP expression levels. The survival differences between the high and low expression groups of HSP90α and hs-CRP were compared using Kaplan-Meier analysis and the log-rank test.

We then performed LASSO (Least Absolute Shrinkage and Selection Operator) regression to identify factors associated with OS in patients with advanced HCC, incorporating clinically relevant variables including Age, Sex, hepatitis B virus (HBV) status, white blood cell count (WBC), Neutrophil count (NEU), Alpha-Fetoprotein (AFP), Child–Pugh class, albumin–bilirubin (ALBI) grade, tumor number, tumor size, Portal vein tumor thrombosis (PVTT), T, N status, M status, and Barcelona Clinic Liver Cancer (BCLC) stage. This was followed by stepwise Cox regression to refine the model and determine independent prognostic factors. Variables with significant association in univariate analyses were entered into the multivariate Cox model, with backward stepwise selection to identify the most robust predictors of OS.

AI model construction

All patients were randomly divided into a training set and a validation set in a 7:3 ratio. In the training set, the final identified independent prognostic factors were incorporated into five machine learning models: Cox regression, LASSO, Decision Tree (DT), Random Survival Forests (RSF), and XGBoost. All models were trained and optimized using 5-fold cross-validation, and the C-index was computed for each model to evaluate its discriminatory performance.

Subsequently, the performance of all models was evaluated in the validation set using time-dependent Receiver Operating Characteristic (ROC) curves, Decision Curve Analysis (DCA), and calibration curves. These methods were used to assess the models’ ability to predict OS and to determine their clinical applicability.

To further explain the models, variable importance plots were generated to visualize the contribution of each predictor in the models. These plots help identify the key features that drive the models’ predictions, providing insight into the relative importance of each variable in predicting survival outcomes.

Statistical analysis

Categorical variables are presented as counts and percentages, while continuous variables are expressed as either mean ± standard deviation (SD) or median with interquartile range (IQR), depending on the data distribution. Differences between groups were compared using the Chi-square test for categorical variables and Student's t-test or Mann-Whitney U test for continuous variables. The optimal cutoff values for HSP90α and hs-CRP were determined using the maximal survival difference method based on Kaplan-Meier analysis. Survival analysis was carried out with Kaplan-Meier curves and evaluated using the log-rank test. All statistical analyses were conducted using R software, with a significance level set at p < 0.05.

Result

Baseline characteristics

A total of 644 patients with advanced HCC were included in the study. The mean age was 55.1 ± 11.2 years, with 63.8% of patients being younger than 60 years. The majority of patients were male (84.5%), and 60.9% had a history of HBV infection. The mean WBC was 6.13 ± 2.85 × 109/L. AFP levels were elevated (≥400 ng/mL) in 49.2% of patients. In terms of liver function, most patients were classified as Child-Pugh A (74.2%), with 26.6% in Child-Pugh B. The majority of patients had multiple tumors (88.0%) and large tumors, with a mean size of 8.75 ± 4.34 cm. PVTT was present in 50.9% of patients, and 69.9% had lymph node involvement. Metastasis was observed in 27.2% of patients, and the majority were classified as BCLC stage C (87.4%), with 12.6% in BCLC stage B.

The optimal cutoff value for HSP90α was 143.3, dividing patients into two groups: HSP90α < 143.3 and HSP90α ≥ 143.3. Significant differences between the two groups were observed in age, HBV, WBC, AFP, Child-Pugh classification, tumor size, PVTT, M status, and BCLC stage.

The optimal cutoff value for CRP was 1.62, dividing patients into two groups: CRP <1.62 and CRP ≥1.62. Significant differences between the two groups were observed in WBC, AFP, ALBI, tumor size, PVTT, N status, and BCLC stage (Table 1).

Table 1
www.frontiersin.org

Table 1. Baseline characteristics of HCC patients stratified by CRP and HSP90α levels.

Biomarker selection

High expression of HSP90α was associated with significantly shorter OS compared with low expression (7.7 months [95% CI: 6.2–9.5] vs. 20.6 months [95% CI: 17.9–23.6], p < 0.001; Figure 1A). Similarly, high CRP expression was associated with markedly reduced OS compared with low expression (11.6 months [95% CI: 10.2–13.7] vs. 30.8 months [95% CI: 20.6–44.8], p < 0.001; Figure 1B).

Figure 1
Two Kaplan-Meier survival curves comparing overall survival (OS) percentages between low and high groups over time. Graph A shows separate curves for low (blue) and high (red) groups, with significant differences (p < 0.0001). The number at risk decreases over 48 months. Graph B also depicts low (blue) and high (red) survival curves, again showing significant differences (p < 0.0001) over the same period, with a table indicating decreasing numbers at risk.

Figure 1. Kaplan-Meier survival curves for overall survival (OS) in advanced hepatocellular carcinoma (HCC) patients based on expression levels of biomarkers. (A) High and low expression groups of HSP90α. (B) High and low expression groups of hs-CRP.

LASSO regression was used to identify key prognostic factors, including Age, HBV, WBC, CRP, HSP90α, Child-Pugh classification, ALBI, Tumor number, PVTT, M status, and BCLC stage (Figures 2A,B). Subsequently, stepwise Cox regression analysis was performed, and the final independent prognostic factors were determined to be Age, CRP, HSP90α, Child, Tumor number, M status, and PVTT (Table 2).

Figure 2
Panel A shows coefficient paths for various predictors against log lambda values in a LASSO model, with multiple colored lines indicating different coefficients. Panel B presents a plot of partial likelihood deviance versus log lambda. Red dots represent the deviance values, with error bars indicating variability, and vertical dashed lines highlighting selected lambda values.

Figure 2. Selection of prognostic factors for overall survival (OS) using LASSO regression (A) LASSO coefficient profiles for each variable as a function of the log(lambda) values. The plot illustrates the shrinkage of coefficients as the regularization parameter increases, with the most significant variables remaining after tuning the lambda parameter. (B) Partial likelihood deviance for LASSO regression, showing the optimal lambda value selected (indicated by the vertical dotted line) that minimizes deviance while ensuring the inclusion of key prognostic factors.

Table 2
www.frontiersin.org

Table 2. Univariate and multivariate Cox regression analyses of overall survival in HCC patients.

Subsequently, stepwise Cox regression analysis identified Age, CRP, HSP90α, Child–Pugh class, tumor number, M status, and PVTT as the final independent prognostic factors for OS. Specifically, Age ≥60 was associated with reduced risk (HR = 0.81, 95% CI: 0.67–0.97, p = 0.025), while high CRP (HR = 1.49, 95% CI: 1.10–2.01, p = 0.010), high HSP90α (HR = 1.55, 95% CI: 1.29–1.86, p < 0.001), Child–Pugh B (HR = 1.41, 95% CI: 1.13–1.76, p = 0.002), tumor number ≥2 (HR = 1.42, 95% CI: 1.07–1.89, p = 0.015), M status (HR = 1.28, 95% CI: 1.05–1.55, p = 0.014), and PVTT (HR = 1.45, 95% CI: 1.23–1.58, p = 0.023) were all independently associated with worse OS (Table 2).

HSP90α and CRP

As shown in Figure 3, significant differences in HSP90α expression were observed across various baseline characteristics. HSP90α levels were significantly higher in patients aged ≥60 years compared to those aged <60 years (p < 0.001, Figure 3A). Higher HSP90α expression was also associated with more advanced disease, including higher Child-Pugh B classification (p = 0.0015, Figure 3B), presence of metastasis (p < 0.001, Figure 3C), greater tumor number (p = 0.048, Figure 3D), and PVTT (p < 0.001, Figure 3E). These findings suggest that HSP90α may serve as a marker of disease progression in HCC.

Figure 3
Violin plots and scatter plot comparing HSP90α and CRP levels across various factors. Plots A to E show HSP90α levels, while plots F to J show CRP levels. The factors include Age, Child status, M classification, Number, and PVTT status. Each plot includes T-test p-values. Plot K is a scatter plot showing a positive correlation between CRP and HSP90α, with a correlation coefficient of 0.45 and a significance level of p = 2.2e-16.

Figure 3. Violin plots and correlation analysis of HSP90α and CRP expression across various clinical and baseline characteristics (A) Violin plot showing HSP90α expression in patients <60 vs. ≥ 60 years. (B) Violin plot showing HSP90α expression in Child-Pugh A vs. (B) (C) Violin plot showing HSP90α expression in patients with and without metastasis (M). (D) Violin plot showing HSP90α expression in patients with 1 vs. ≥ 2 tumors. (E) Violin plot showing HSP90α expression in patients with and without portal vein tumor thrombosis (PVTT). (F) Violin plot showing CRP levels in patients <60 vs. ≥ 60 years for CRP levels. (G) Violin plot showing CRP levels in Child-Pugh A vs. (B) (H) Violin plot showing CRP levels in patients with and without metastasis (M). (I) Violin plot showing CRP levels in patients with 1 vs. ≥ 2 tumors. (J) Violin plot showing CRP levels in patients with and without PVTT. (K) Scatter plot showing a positive correlation between CRP and HSP90α (R = 0.45), indicating a significant relationship between these biomarkers.

For CRP, significant differences were observed in Child-Pugh classification (p = 0.0023, Figure 3G) and the presence of PVTT (p = 0.0022, Figure 3J), with higher CRP levels in patients with more advanced liver disease and PVTT. However, no significant differences in CRP were found based on age (p = 0.21, Figure 3F), metastasis (p = 0.41, Figure 3H), or tumor number (p = 0.12, Figure 3I).

Additionally, a significant positive correlation between CRP and HSP90α was observed (R = 0.45, Figure 3K), suggesting a potential interrelationship between these markers in HCC.

AI model construction

All patients were randomly divided into training and validation sets. In the training set, the independent prognostic factors identified earlier were incorporated into five machine learning models. The C-index for each model were as follows: 0.669 for Cox, 0.647 for LASSO, 0.675 for DT, 0.679 for RSF, and 0.666 for XGBoost. Among these models, RSF demonstrated the highest predictive performance for OS in patients with advanced HCC.

In the validation set, ROC curves were generated for five machine learning models: Cox regression (Figure 4A), LASSO (Figure 4B), DT (Figure 4C), RSF (Figure 4D), and XGBoost (Figure 4E). The RSF model demonstrated the highest predictive performance, with AUC values of 0.803 at 6 months, 0.801 at 12 months, and 0.761 at 18 months.

Figure 4
Five ROC curve graphs labeled A to E plot sensitivity against one minus specificity. Each graph contains red, green, and blue lines representing different time points (T=6, T=12, T=18). The graphs include AUC values ranging approximately from 0.724 to 0.803, with slight variations per time point. The axes range from 0.0 to 1.0, with diagonal gray guidelines representing random classifiers.

Figure 4. ROC curves were generated for five machine learning models: Cox regression (A), LASSO (B), DT (C), RSF (D), and XGBoost (E).

AI model validation

Figure 5A shows the calibration curve for the RSF model, which illustrates the close alignment between the predicted and actual observed risks at various time points. The model demonstrates a good calibration, with the predicted probabilities closely matching the actual survival outcomes for the cohort.

Figure 5
Four graphs labeled A to D. A: Calibration plot comparing predicted and estimated actual risk at six, twelve, and eighteen months. B: DCA at six months showing net benefit against threshold probability for treating all, treating none, and RSF. C: DCA at twelve months. D: DCA at eighteen months. Each graph uses distinct lines for different treatments.

Figure 5. Model performance evaluation using calibration curves and Decision Curve Analysis (DCA). (A) Calibration plot for the RSF model at different time points (T = 6, T = 12, T = 18), comparing predicted and actual risk. (B–D): Decision Curve Analysis (DCA) for the RSF model at 6 months (B), 12 months (C), and 18 months (D), comparing the net benefit of the “Treat All,” “Treat None,” and RSF strategies. The RSF model showed the highest net benefit across all time points.

DCA was used to assess the clinical utility of the RSF model at 6 months, 12 months, and 18 months, respectively. The RSF model showed a higher net benefit compared to the “Treat All” and “Treat None” strategies across all time points, indicating its superior predictive value for patient survival. At 6 months (Figure 5B), the RSF model provided the highest net benefit at a threshold probability of approximately 25%. Similarly, at 12 months (Figure 5C) and 18 months (Figure 5D), the RSF model showed superior net benefit compared to the alternative strategies.

To further explain the RSF model, a variable importance plot was generated, showing the top five most important features: CRP, Child, M status, HSP90α, and Number of tumors (Supplementary Figure S1). The risk scores for all patients were calculated using the RSF model. In the training set (Figure 6A) and the test set (Figure 6B), the survival curves demonstrate a significant difference in OS between the low-risk and high-risk groups (p < 0.0001). Patients in the high-risk group exhibited a markedly reduced survival probability compared to those in the low-risk group.

Figure 6
Two graphs display survival curves by risk group. Graph A shows the training set, with survival percentages over 48 months; low-risk (blue) declines more slowly than high-risk (red), p-value below 0.0001. Graph B presents the test set, similarly showing low-risk (blue) with better survival than high-risk (red), p-value below 0.0001. Risk numbers are provided for different time points.

Figure 6. Kaplan-Meier survival curves for overall survival (OS) in training (A) and test (B) sets based on risk groups.

Discussion

HCC remains one of the leading causes of cancer-related deaths worldwide. Most patients are diagnosed at advanced stages, where curative treatments are no longer viable. Despite advances in systemic therapies, particularly ICIs and molecular targeted therapies (Xu K. et al., 2025; Jiang et al., 2025), responses to immunotherapy remain heterogeneous, and reliable biomarkers to predict treatment outcomes are still lacking.

Emerging evidence highlights the active role of stress in modulating tumor immunity (Li W. et al., 2025). Chronic stress, sympathetic nervous activation, and stress-induced inflammation can influence immune responses, impacting both tumor progression and therapeutic efficacy (Noverati et al., 2022; Zhang et al., 2020). Circulating biomarkers such as HSP90α and hs-CRP offer insight into tumor immunity. HSP90α, a stress-inducible molecular chaperone, stabilizes several oncogenic and immune checkpoint-related proteins, while hs-CRP, an IL-6–driven acute-phase reactant, reflects systemic inflammation under neuroendocrine influence (Deng et al., 2025; Chen et al., 2024).

Understanding how this neuroimmune stress–inflammation axis interacts with immune modulation could enhance treatment decisions for advanced HCC. To address the complexities of the interplay between stress, inflammation, and immune responses, this study incorporated machine learning models to assess the prognostic value of HSP90α and hs-CRP in patients receiving immunotherapy.

Our findings demonstrate the significant prognostic value of both HSP90α and hs-CRP in predicting OS in advanced HCC. High expression of HSP90α was significantly associated with shorter OS, confirming its role as a marker of disease progression. Elevated HSP90α levels contribute to immune escape by stabilizing oncogenic proteins, which can impair the effectiveness of immunotherapies. Our study showed that patients with high HSP90α expression had significantly shorter OS (7.7 vs. 20.6 months, p < 0.001). These results suggest that HSP90α could be a reliable biomarker for predicting immunotherapy response and assessing disease severity.

Similarly, high hs-CRP expression was associated with worse survival outcomes, supporting the role of inflammation in tumor progression and immune suppression. Elevated CRP levels reflect systemic inflammation driven by neuroendocrine factors, which are known to contribute to an immunosuppressive tumor microenvironment (Du et al., 2024). In our study, patients with high CRP levels had significantly shorter OS (11.6 vs. 30.8 months, p < 0.001). This highlights the value of hs-CRP as a prognostic marker in HCC, suggesting that targeting inflammation could improve therapeutic responses.

To further improve the predictive accuracy of these biomarkers, we employed machine learning models. By integrating clinical and biological data, we constructed a robust prognostic model using Cox regression, LASSO, DT, RSF, and XGBoost. The RSF model demonstrated the highest predictive performance, with AUC values of 0.803 at 6 months, 0.801 at 12 months, and 0.761 at 18 months, outperforming the other models. The RSF model’s superior performance underscores the advantage of machine learning in capturing complex, nonlinear interactions between clinical and molecular factors, improving predictions of OS in advanced HCC (Hsieh et al., 2023; Xia et al., 2024; Zhao et al., 2024; Saillard et al., 2020; Song et al., 2025; Zhao et al., 2025).

The clinical utility of the RSF model was validated through calibration curves and DCA, which demonstrated that the RSF model offered the highest net benefit compared to other strategies at all time points (6, 12, and 18 months). This suggests that the RSF model could be a valuable tool for guiding treatment decisions, helping clinicians tailor therapy based on the patient’s risk score. The variable importance plot identified key features influencing survival predictions, including CRP, Child-Pugh classification, M status, HSP90α, and tumor number.

Despite these promising results, our study has several limitations. As a retrospective analysis, selection bias may have influenced the findings. In addition, the specific types of PD-1 inhibitors used were not completely uniform across patients, and this heterogeneity may have introduced variability in treatment response. Prospective validation of the models and biomarkers in independent cohorts is necessary to confirm the robustness of our conclusions. Although HSP90α and hs-CRP showed strong associations with OS, the mechanistic interaction between these biomarkers within the HCC immune microenvironment remains insufficiently understood. Future basic and mechanistic studies are planned to further validate and elucidate the pathways through which HSP90α and hs-CRP jointly influence immune regulation, immune evasion, and tumor progression. Moreover, the application of machine-learning models in clinical settings requires careful consideration of interpretability and integration into routine practice.

Conclusion

In conclusion, this study highlights the prognostic significance of HSP90α and hs-CRP in advanced HCC. The RSF model demonstrated superior predictive performance, offering a promising tool for personalized treatment strategies. The integration of biological markers with machine learning models could enhance the precision of treatment decisions and improve patient outcomes in advanced HCC.

Data availability statement

The original contributions presented in the study are included in the article/Supplementary Material, further inquiries can be directed to the corresponding authors.

Ethics statement

The studies involving humans were approved by Affiliated Hospital of Southwest Medical University (KY2025340). The studies were conducted in accordance with the local legislation and institutional requirements. The participants provided their written informed consent to participate in this study.

Author contributions

Z-YW: Data curation, Investigation, Software, Validation, Writing – original draft, Writing – review and editing. XuL: Data curation, Investigation, Supervision, Validation, Writing – original draft. LY: Conceptualization, Data curation, Writing – review and editing. YuS: Conceptualization, Formal Analysis, Methodology, Writing – original draft. XiL: Data curation, Investigation, Writing – original draft. LW: Data curation, Formal Analysis, Investigation, Writing – original draft. YaS: Data curation, Investigation, Supervision, Validation, Writing – original draft. WD: Conceptualization, Data curation, Writing – original draft. YT: Conceptualization, Data curation, Writing – original draft. QW: Conceptualization, Data curation, Software, Writing – original draft. JL: Conceptualization, Data curation, Writing – original draft. HL: Data curation, Formal analysis, Methodology, Writing – original draft, Writing – review and editing. PW: Conceptualization, Data curation, Supervision, Validation, Writing – original draft, Writing – review and editing.

Funding

The authors declare that no financial support was received for the research and/or publication of this article.

Conflict of interest

The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.

Generative AI statement

The authors declare that no Generative AI was used in the creation of this manuscript.

Any alternative text (alt text) provided alongside figures in this article has been generated by Frontiers with the support of artificial intelligence and reasonable efforts have been made to ensure accuracy, including review by the authors wherever possible. If you identify any issues, please contact us.

Publisher’s note

All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article, or claim that may be made by its manufacturer, is not guaranteed or endorsed by the publisher.

Supplementary material

The Supplementary Material for this article can be found online at: https://www.frontiersin.org/articles/10.3389/fphar.2025.1726967/full#supplementary-material

References

Chen, Z., Ding, C., Chen, K., Gu, Y., Qiu, X., and Li, Q. (2024). Investigating the causal association between obesity and risk of hepatocellular carcinoma and underlying mechanisms. Sci. Rep. 14 (1), 15717. doi:10.1038/s41598-024-66414-1

PubMed Abstract | CrossRef Full Text | Google Scholar

Deng, Z., Liu, L., Xie, G., Zheng, Z., Li, J., Tan, W., et al. (2025). Hsp90α promotes lipogenesis by stabilizing FASN and promoting FASN transcription via LXRα in hepatocellular carcinoma. J. Lipid Res. 66 (1), 100721. doi:10.1016/j.jlr.2024.100721

PubMed Abstract | CrossRef Full Text | Google Scholar

Du, J., Huang, Z., and Zhang, E. (2024). Nomograms confirm serum IL-6 and CRP as predictors of immune checkpoint inhibitor efficacy in unresectable hepatocellular carcinoma. Front. Immunol. 15, 1329634. doi:10.3389/fimmu.2024.1329634

PubMed Abstract | CrossRef Full Text | Google Scholar

Finn, R. S., Qin, S., Ikeda, M., Galle, P. R., Ducreux, M., Kim, T. Y., et al. (2020). Atezolizumab plus bevacizumab in unresectable hepatocellular carcinoma. N. Engl. J. Med. 382 (20), 1894–1905. doi:10.1056/NEJMoa1915745

PubMed Abstract | CrossRef Full Text | Google Scholar

Ganesan, P., and Kulik, L. M. (2023). Hepatocellular carcinoma: new developments. Clin. Liver Dis. 27 (1), 85–102. doi:10.1016/j.cld.2022.08.004

PubMed Abstract | CrossRef Full Text | Google Scholar

Hsieh, C., Laguna, A., Ikeda, I., Maxwell, A. W. P., Chapiro, J., Nadolski, G., et al. (2023). Using machine learning to predict response to image-guided therapies for hepatocellular carcinoma. Radiology 309 (2), e222891. doi:10.1148/radiol.222891

PubMed Abstract | CrossRef Full Text | Google Scholar

Iida, H., Tani, M., Komeda, K., Nomi, T., Matsushima, H., Tanaka, S., et al. (2022). Superiority of CRP-albumin-lymphocyte index (CALLY index) as a non-invasive prognostic biomarker after hepatectomy for hepatocellular carcinoma. HPB Oxf. 24 (1), 101–115. doi:10.1016/j.hpb.2021.06.414

PubMed Abstract | CrossRef Full Text | Google Scholar

Jiang, X., Wang, P., Su, K., Li, H., Chi, H., Wang, F., et al. (2024). Camrelizumab combined with transcatheter arterial chemoembolization and sorafenib or lenvatinib for unresectable hepatocellular carcinoma: a multicenter, retrospective study. Ann. Hepatol. 30 (2), 101578. doi:10.1016/j.aohep.2024.101578

PubMed Abstract | CrossRef Full Text | Google Scholar

Jiang, Y., Su, K., Li, H., Wang, C., Wu, Z., Chen, J., et al. (2025). Efficacy and safety of the combination of envafolimab and lenvatinib in unresectable hepatocellular carcinoma: a single-arm, multicentre, exploratory phase II clinical study. Investig. New Drugs 43 (1), 18–29. doi:10.1007/s10637-024-01468-6

PubMed Abstract | CrossRef Full Text | Google Scholar

Li, H., Zhou, C., Wang, C., Li, B., Song, Y., Yang, B., et al. (2025a). Lasso-cox interpretable model of AFP-Negative hepatocellular carcinoma. Clin. Transl. Oncol. 27 (1), 309–318. doi:10.1007/s12094-024-03588-0

PubMed Abstract | CrossRef Full Text | Google Scholar

Li, W., Zhang, J., Gao, Y., Kong, X., and Sun, X. (2025b). Nervous system in hepatocellular carcinoma: correlation, mechanisms, therapeutic implications, and future perspectives. Biochim. Biophys. Acta Rev. Cancer 1880 (3), 189345. doi:10.1016/j.bbcan.2025.189345

PubMed Abstract | CrossRef Full Text | Google Scholar

Liu, Y. B., Ying, J., Kuang, S. J., Jin, H. S., Yin, Z., Chang, L., et al. (2015). Elevated preoperative serum Hs-CRP level as a prognostic factor in patients who underwent resection for hepatocellular carcinoma. Med. Baltim. 94 (49), e2209. doi:10.1097/MD.0000000000002209

PubMed Abstract | CrossRef Full Text | Google Scholar

Noverati, N., Bashir-Hamidu, R., Halegoua-DeMarzio, D., and Hann, H. W. (2022). Hepatitis B virus-associated hepatocellular carcinoma and chronic stress. Int. J. Mol. Sci. 23 (7), 3917. doi:10.3390/ijms23073917

PubMed Abstract | CrossRef Full Text | Google Scholar

Oura, K., Morishita, A., Tani, J., and Masaki, T. (2021). Tumor immune microenvironment and immunosuppressive therapy in hepatocellular carcinoma: a review. Int. J. Mol. Sci. 22 (11), 5801. doi:10.3390/ijms22115801

PubMed Abstract | CrossRef Full Text | Google Scholar

Saillard, C., Schmauch, B., Laifa, O., Moarii, M., Toldo, S., Zaslavskiy, M., et al. (2020). Predicting survival after hepatocellular carcinoma resection using deep learning on histological slides. Hepatology 72 (6), 2000–2013. doi:10.1002/hep.31207

PubMed Abstract | CrossRef Full Text | Google Scholar

Song, S., Song, S., Zhao, H., Huang, S., Xiao, X., Lv, X., et al. (2025). Using machine learning methods to investigate the impact of age on the causes of death in patients with early intrahepatic cholangiocarcinoma who underwent surgery. Clin. Transl. Oncol. 27 (4), 1623–1631. doi:10.1007/s12094-024-03716-w

PubMed Abstract | CrossRef Full Text | Google Scholar

Su, K., Liu, Y., Wang, P., He, K., Wang, F., Chi, H., et al. (2022). Heat-shock protein 90α is a potential prognostic and predictive biomarker in hepatocellular carcinoma: a large-scale and multicenter study. Hepatol. Int. 16 (5), 1208–1219. doi:10.1007/s12072-022-10391-y

PubMed Abstract | CrossRef Full Text | Google Scholar

Su, K., Liu, X., Zeng, Y. C., Xu, J., Li, H., Wang, H., et al. (2025). Machine learning radiomics for predicting response to MR-Guided radiotherapy in unresectable hepatocellular carcinoma: a multicenter cohort study. J. Hepatocell. Carcinoma 12, 933–947. doi:10.2147/JHC.S521378

PubMed Abstract | CrossRef Full Text | Google Scholar

Wang, Y., Jian, W., Yuan, Z., Guan, F., and Carlson, D. (2025). Deep learning with attention modules and residual transformations improves hepatocellular carcinoma (HCC) differentiation using multiphase CT. Prec Radiat. Oncol. 9, 13–22. doi:10.1002/pro6.70003

PubMed Abstract | CrossRef Full Text | Google Scholar

Xia, Y., Tang, W., Qian, X., Li, X., Cheng, F., Wang, K., et al. (2022). Efficacy and safety of camrelizumab plus apatinib during the perioperative period in resectable hepatocellular carcinoma: a single-arm, open label, phase II clinical trial. J. Immunother. Cancer 10 (4), e004656. doi:10.1136/jitc-2022-004656

PubMed Abstract | CrossRef Full Text | Google Scholar

Xia, T., Zhao, B., Li, B., Lei, Y., Song, Y., Wang, Y., et al. (2024). MRI-based radiomics and deep learning in biological characteristics and prognosis of hepatocellular carcinoma: opportunities and challenges. J. Magn. Reson Imaging 59 (3), 767–783. doi:10.1002/jmri.28982

PubMed Abstract | CrossRef Full Text | Google Scholar

Xu, J., Zhang, L., Liu, Q., and Zhu, J. (2025a). Preoperative multiparameter MRI-Based prediction of Ki-67 expression in primary central nervous system lymphoma. Prec Radiat. Oncol. 9, 23–34. doi:10.1002/pro6.70005

PubMed Abstract | CrossRef Full Text | Google Scholar

Xu, K., Gu, T., Su, K., Liu, X., He, B., He, J., et al. (2025b). Stereotactic body radiation therapy (SBRT) increases anti-PD-1 antitumor activity by enhancing the tumor immune microenvironment in mice with metastatic hepatocellular carcinoma. Discov. Oncol. 16 (1), 1081. doi:10.1007/s12672-025-02914-4

PubMed Abstract | CrossRef Full Text | Google Scholar

Zhang, L., Wu, L. L., Huan, H. B., Wen, X. D., Yang, D. P., Chen, D. F., et al. (2020). Activation of muscarinic acetylcholine receptor 1 promotes invasion of hepatocellular carcinoma by inducing epithelial-mesenchymal transition. Anticancer Drugs 31 (9), 908–917. doi:10.1097/CAD.0000000000000907

PubMed Abstract | CrossRef Full Text | Google Scholar

Zhao, H., Qi, Y., Zhang, L., Xing, M., and Yang, F. (2024). Thoracic radiotherapy timing and prognostic factors in elderly patients with limited-stage small cell lung cancer. Prec Radiat. Oncol. 8, 14–21. doi:10.1002/pro6.1223

PubMed Abstract | CrossRef Full Text | Google Scholar

Zhao, J., Li, Y., Li, R., Yao, X., Dong, X., Su, L., et al. (2025). Nomogram based on computed tomography radiomics features and clinicopathological factors to predict the prognosis of patients with non-small cell lung cancer receiving immune checkpoint inhibitor rechallenge. Transl. Lung Cancer Res. 14 (3), 842–856. doi:10.21037/tlcr-24-876

PubMed Abstract | CrossRef Full Text | Google Scholar

Zhou, X., Wen, Y., Tian, Y., He, M., Ke, X., Huang, Z., et al. (2019). Heat shock protein 90α-Dependent B-Cell-2-Associated transcription factor 1 promotes hepatocellular carcinoma proliferation by regulating MYC proto-oncogene c-MYC mRNA stability. Hepatology 69 (4), 1564–1581. doi:10.1002/hep.30172

PubMed Abstract | CrossRef Full Text | Google Scholar

Keywords: artificial intelligence, PD-1 inhibitors, hepatocellular carcinoma, Hsp90α, Hs-CRP

Citation: Wu Z-Y, Li X, Yang L, Shi Y, Liu X, Wen L, Song Y, Du W, Tu Y, Wei Q, Liu J, Li H and Wang P (2025) Exploring HSP90α and hs-CRP using AI models to predict prognosis in advanced hepatocellular carcinoma treated with PD-1 inhibitors and targeted therapy. Front. Pharmacol. 16:1726967. doi: 10.3389/fphar.2025.1726967

Received: 17 October 2025; Accepted: 25 November 2025;
Published: 12 December 2025.

Edited by:

Shaoqiu Chen, University of Hawaii at Mānoa, United States

Reviewed by:

Junfeng Zhao, Shandong Cancer Hospital, China
Ying Jiang, Peking Union Medical College Hospital (CAMS), China

Copyright © 2025 Wu, Li, Yang, Shi, Liu, Wen, Song, Du, Tu, Wei, Liu, Li and Wang. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

*Correspondence: Pan Wang, Nzc1NjgyNjg3QHFxLmNvbQ==; Hongyan Li, MjgzMjYzMDVAcXEuY29t

These authors have contributed equally to this work and share first authorship

Disclaimer: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.