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Abstract #1246

Two distinct thalamic subtypes associated with cognitive impairment in first-episode schizophrenia

Wei Yu1,2, Bo Tao1,2, Qiannan Zhao2,3, Yuan Xiao1,2, Fei Zhu1,2, Ziyang Gao1,2, and Su Lui1,2
1Department of Radiology, West China Hospital of Sichuan University, Chengdu, China, 2Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, China, 3Huaxi MR Research Center (HMRRC), West China Hospital of Sichuan University, Chengdu, China

Synopsis

Keywords: Psychiatric Disorders, Brain, thalamic nuclei

Motivation: Schizophrenia is characterized by high heterogeneity, with the core symptom of cognitive impairment. However, it is unclear that whether the patterns of thalamic nuclei volume alterations is associated with cognitive function in schizophrenia.

Goal(s): To investigate the pattern and heterogeneity of thalamic nuclei alterations and cognition in schizophrenia.

Approach: The cluster analysis (K-means++) was used to identify the subtype of schizophrenia. And machine learning model was developed to validate the reproducibility of subtypes.

Results: We uncovered two markedly distinct neuroanatomical subtypes of schizophrenia. One of the subtypes characterized as widespread decrease in thalamic nuclei and severe cognition deficit.

Impact: These findings could help to identify biological targets related to the treatment of schizophrenia, and improve the functional outcomes in patients with schizophrenia.

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Keywords