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Serum NfL and CHI3L1 for ALS and parkinsonian disorders in the process of diagnosis

  • Neurology and Preclinical Neurological Studies - Original Article
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Abstract

Serum neurofilament light chain (NfL) and chitinase 3-like 1 (CHI3L1, also called YKL-40) concentrations are attractive candidate biomarkers for neurodegenerative disorders, which include amyotrophic lateral sclerosis (ALS) and parkinsonian disorders. We aimed to assess the diagnostic power of serum NfL and CHI3L1 concentrations with regard to the early diagnosis of ALS and Parkinson’s disease (PD). We studied 157 individuals, which included 41 healthy controls, 8 patients with ALS mimics, 18 patients initially diagnosed with ALS (ID-ALS), 32 patients late-diagnosed with ALS (LD-ALS), 29 patients with PD, 12 patients with PD mimics, and 17 patients initially diagnosed with atypical parkinsonian disorders (ID-APDs) at the initial stage of diagnosis. Electrochemiluminescence was used to measure the concentrations of serum NfL and CHI3L1, the diagnostic performance of which was assessed using the area under the receiver operating curves (AUCs). The AUCs of serum NfL were 0.90 for discriminating ALS mimics from LD-ALS at the initial stage of diagnosis and 0.89 for discriminating ALS mimics from ALS (LD/ID-ALS). The AUCs of serum NfL were 0.76 for discriminating PD from PD mimics at the initial stage of diagnosis, and 0.80 for discriminating PD from APD. No significant difference existed in serum CHI3L1 concentrations between individuals with suspected ALS or parkinsonism (p = 0.14, and p = 0.44, respectively). Serum NfL had excellent and almost good diagnostic performances for patients with ALS and PD, respectively, at the initial stage of diagnosis, whereas no significant difference existed in serum CHI3L1 between any groups.

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Acknowledgements

We would like to thank Dr. Takahiro Furukawa for contribution to establishment of dataset of the present study.

Funding

This study was supported by Japan Society for Promotion of Science (JSPS) KAKENHI Grant Number 20K12670, Japan Intractable Disease (Nanbyo) Research Foundation, and Grants-in Aid from the Research Committee of CNS Degenerative Diseases, Research on Policy Planning and Evaluation for Rare and Intractable Diseases, Health, Labour and Welfare Sciences Research Grants, the Ministry of Health, Labour and Welfare, Japan.

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Authors and Affiliations

Authors

Contributions

WS conceived the idea for this research. WS, SH, and NM designed the experiments. WS, YO, and YI recruited the patients. NM measured concentrations of NfL and CHI3L1. SH analyzed the data. WS wrote the first draft of the manuscript, with important contributions from SH, NM, YO, and YI. All authors read and approved the final manuscript.

Corresponding author

Correspondence to Wataru Sako.

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Competing interests

The authors declare that they have no competing interests.

Ethical approval

This study was approved by the ethics committee of Tokushima University Hospital (#2572).

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Written informed consent was obtained from all patients prior to participating in the study.

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Supplementary Information

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702_2022_2470_MOESM1_ESM.tif

Supplementary file 1 Figure S1. AF NfL was not correlated with CHI3L1 in other groups (all subjects, rho = 0.16, p = 0.04; Ctr, rho = 0.00, p = 0.99; suspected ALS, rho = 0.12, p = 0.37; ALS mimics, rho = 0.05. p = 0.93; ID-ALS, rho = 0.40, p = 0.10; LD-ALS, rho = 0.04, p = 0.84). GJ NfL was correlated with CHI3L1 in parkinsonism (parkinsonism, rho = 0.46, p < 0.001; PD, rho = 0.48. p = 0.01; LD-APD, rho = 0.64, p = 0.03; ID-APD, rho = 0.53, p = 0.03). (TIF 329 KB)

702_2022_2470_MOESM2_ESM.tif

Supplementary file 2 Figure S2. The ROC curve analysis results of serum CHI3L1. A, B The AUCs are not significant for ALS mimics versus LD-ALS or ALS (LD/ID ALS). C, D The AUCs are not significant and around 0.6 for PD versus PD mimics (LD-APD) or APD (PD mimics/ID-APD). AUCs area under the curves; CHI3L1 chitinase 3-like 1; ID-ALS initially diagnosed with amyotrophic lateral sclerosis; ID-APD initially diagnosed with atypical parkinsonian disorders; LD-ALS late diagnosed with amyotrophic lateral sclerosis; LD-APD late diagnosed with atypical parkinsonian disorders; NfL neurofilament light chain; PD Parkinson’s disease; ROC, receiver operating characteristic. (TIF 789 KB)

702_2022_2470_MOESM3_ESM.tif

Supplementary file 3 Figure S3. The ROC curve analysis results of serum NfL and the combination of NfL and CHI3L1. Solid line indicates the ROC curve results of serum NfL, and dotted line indicates those of the combination of NfL and CHI3L1. A The AUCs of NfL and the combination of NfL and CHI3L1 were 0.90 and 0.89 for discriminating ALS mimics from LD-ALS at the initial stage of diagnosis (p = 0.48). B The AUCs of NfL only and the combination of NfL and CHI3L1 were 0.89 and 0.88 for discriminating ALS mimics from ALS (p = 0.57). C The AUCs of NfL only and the combination of NfL and CHI3L1 were 0.76 and 0.80 for discriminating PD from PD mimics at the initial stage of diagnosis (p = 0.36). D The AUCs of NfL only and combination of NfL and CHI3L1 were 0.80 and 0.83 for discriminating PD from APD (p = 0.39). The combination of NfL and CHI3L1 did not improve diagnostic performance in ALS and PD. (TIF 310 KB)

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Haji, S., Sako, W., Murakami, N. et al. Serum NfL and CHI3L1 for ALS and parkinsonian disorders in the process of diagnosis. J Neural Transm 129, 301–309 (2022). https://doi.org/10.1007/s00702-022-02470-z

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  • DOI: https://doi.org/10.1007/s00702-022-02470-z

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