Movement disorders : official journal of the Movement Disorder Society · 2026
Assessing Intronic Variable Number Tandem Repeat (VNTR) Expansions of the HSF1 Gene in Essential Tremor Patients from Eastern China.
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Cao Lanxiao, Li Jiaxin, Zhao Qianhui, Zhao Yuhang, Wang Huiqian, Zheng Zhilin, Mo Qing'er, Chen Xiaohan, Liu Yesong, Xu Tian, Zhao Guohua
Аннотация
BACKGROUND: The association between intronic variable number tandem repeat (VNTR) expansions in intron 10 of the HSF1 gene and essential tremor (ET) has not yet been validated in larger, more diverse populations.
OBJECTIVES: This study aimed to investigate the association between HSF1 gene VNTR expansions and ET in the population of Eastern China.
METHODS: We screened 324 patients and 197 healthy controls (HCs) using fluorescence amplicon length analysis polymerase chain reaction (PCR) then precisely identified and analyzed repeat expansions at this locus by combining repeat-primed PCR with long-read whole-genome sequencing.
RESULTS: Despite identifying 18 patients (5.6%) carrying large HSF1 intronic VNTR expansions (>700 bp), our study found no significant difference in the overall distribution of repeat expansion lengths between the entire cohort of 324 ET patients and HCs, nor between familial and sporadic ET subgroups.
CONCLUSION: The amplification of this repetitive sequence in intron 10 of the HSF1 gene does not constitute a universal, major, or reliable genetic risk factor for ET. © 2026 International Parkinson and Movement Disorder Society.
OBJECTIVES: This study aimed to investigate the association between HSF1 gene VNTR expansions and ET in the population of Eastern China.
METHODS: We screened 324 patients and 197 healthy controls (HCs) using fluorescence amplicon length analysis polymerase chain reaction (PCR) then precisely identified and analyzed repeat expansions at this locus by combining repeat-primed PCR with long-read whole-genome sequencing.
RESULTS: Despite identifying 18 patients (5.6%) carrying large HSF1 intronic VNTR expansions (>700 bp), our study found no significant difference in the overall distribution of repeat expansion lengths between the entire cohort of 324 ET patients and HCs, nor between familial and sporadic ET subgroups.
CONCLUSION: The amplification of this repetitive sequence in intron 10 of the HSF1 gene does not constitute a universal, major, or reliable genetic risk factor for ET. © 2026 International Parkinson and Movement Disorder Society.