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Updated: May 4, 2026

Human Neural Organoids for Studying Brain Cancer and Neurodegenerative Diseases
Published on: June 28, 2019
Clinical features in association with neurodegenerative diseases and malignancies
Ichiro Nozaki1, Yuko Kato-Motozaki, Tokuhei Ikeda
1Department of Neurology, National Hospital Organization Iou National Hospital, Kanazawa, Japan.
Objective:
To examine whether there are clinical features in Japanese patients with both neurodegenerative diseases and cancers.
Methods:
We analyzed the clinical characteristics of consecutive Japanese patients with neurodegenerative diseases during the past 5 years, including amyotrophic lateral sclerosis (ALS), Parkinson's disease (PD), dementia with Lewy bodies, progressive supranuclear palsy (PSP), corticobasal degeneration (CBD), and multiple system atrophy (MSA).
Results:
Out of 292 patients, 39 patients had cancers, including a past history, as follows: ALS, n = 16; PD, n = 8; PSP, n = 7; CBD, n = 1, and MSA, n = 7. About 10% of patients with neurodegenerative diseases developed cancer after onset of the disease; about 30% of patients with ALS, PD, or PSP occurring with cancers died of cancer. Gastric cancer was most common before the onset of ALS (62.5%) but did not develop after the onset of ALS. Conversely, PD patients frequently developed gastric cancers after the onset of neurological signs (60.0%) in spite of no cancer before the onset of PD. The proportion of breast cancer in MSA (45.5%) was significantly higher than in other neurodegenerative diseases.
Conclusion:
ALS, PD, or MSA patients with cancer showed clinical characteristics unique to each neurodegenerative disease in Japan compared to other countries.
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