FAME6 TNRC6A

Disease ID
FAME6
Gene ID
TNRC6A

Disease

Name
Familial adult myoclonic epilepsy type 6
Inheritance
Autosomal dominant
Description
Cortical tremor, seizures with generalised motor (tonic-clonic) onset1 .
Prevalence
FAME overall is 1/35,000 in Japan. This repeat expansion is typically found in individuals of East Asian ancestry1 .
Age of OnsetYears23  74
Age of Onset Details
Limited clinical details from one family, 'early 20s to 70s'

Locus

Details
Novel, reported pathogenic alleles: (TTTTA)22 (TTTCA)exp (TTTTA)exp, but only the TTTCA is specific to affected individuals (size: 1100 repeats). Non-pathogenic reference TTTTA repeat was expanded in nine healthy subjects 40-120 repeats and in two individuals was potentially even longer2 .
Mechanism
GoF?
RNA toxicity hypothesized2,3 .
Year
20182
Location in Gene
Exon 1
Gene Strand

Alleles

Ref. Motif
TTTTA
Pathogenic (ref.)
TTTCA
Pathogenic (gene)
ATTTC
Unknown (ref.)
TTTTT
Unknown (gene)
TTTTT
PathogenicUnits1,100  1,100

gnomAD

References

Direct supporting references for info on this page.

1
Neurological disorders caused by novel non-coding repeat expansions: clinical features and differential diagnosis.
Elisa,Vegezzi, Hiroyuki,Ishiura, D Cristopher,Bragg, David,Pellerin, Francesca,Magrinelli, Riccardo,Currò, Stefano,Facchini, Arianna,Tucci, John,Hardy, Nutan,Sharma, Matt C,Danzi, Stephan,Zuchner, Bernard,Brais, Mary M,Reilly, Shoji,Tsuji, Henry,Houlden, Andrea,Cortese
The Lancet. Neurology · 2024-07-01
pmid:38876750
2
Expansions of intronic TTTCA and TTTTA repeats in benign adult familial myoclonic epilepsy.
Hiroyuki,Ishiura, Koichiro,Doi, Jun,Mitsui, Jun,Yoshimura, Miho Kawabe,Matsukawa, Asao,Fujiyama, Yasuko,Toyoshima, Akiyoshi,Kakita, Hitoshi,Takahashi, Yutaka,Suzuki, Sumio,Sugano, Wei,Qu, Kazuki,Ichikawa, Hideaki,Yurino, Koichiro,Higasa, Shota,Shibata, Aki,Mitsue, Masaki,Tanaka, Yaeko,Ichikawa, Yuji,Takahashi, Hidetoshi,Date, Takashi,Matsukawa, Junko,Kanda, Fumiko Kusunoki,Nakamoto, Mana,Higashihara, Koji,Abe, Ryoko,Koike, Mutsuo,Sasagawa, Yasuko,Kuroha, Naoya,Hasegawa, Norio,Kanesawa, Takayuki,Kondo, Takefumi,Hitomi, Masayoshi,Tada, Hiroki,Takano, Yutaka,Saito, Kazuhiro,Sanpei, Osamu,Onodera, Masatoyo,Nishizawa, Masayuki,Nakamura, Takeshi,Yasuda, Yoshio,Sakiyama, Mieko,Otsuka, Akira,Ueki, Ken-Ichi,Kaida, Jun,Shimizu, Ritsuko,Hanajima, Toshihiro,Hayashi, Yasuo,Terao, Satomi,Inomata-Terada, Masashi,Hamada, Yuichiro,Shirota, Akatsuki,Kubota, Yoshikazu,Ugawa, Kishin,Koh, Yoshihisa,Takiyama, Natsumi,Ohsawa-Yoshida, Shoichi,Ishiura, Ryo,Yamasaki, Akira,Tamaoka, Hiroshi,Akiyama, Taisuke,Otsuki, Akira,Sano, Akio,Ikeda, Jun,Goto, Shinichi,Morishita, Shoji,Tsuji
Nature genetics · 2018-03-05
pmid:29507423
3
Sequence composition changes in short tandem repeats: heterogeneity, detection, mechanisms and clinical implications.
Indhu-Shree,Rajan-Babu, Egor,Dolzhenko, Michael A,Eberle, Jan M,Friedman
Nature reviews. Genetics · 2024-03-11
pmid:38467784

Additional Literature

Additional literature related to this locus.

Raw PubMed search results
(All PubMed results returned by searching for this gene, tandem repeats, and disease, in medline format)

ATTCT and ATTCC repeat expansions in the ATXN10 gene affect disease penetrance of spinocerebellar ataxia type 10.
C Alejandra,Morato Torres, Faria,Zafar, Yu-Chih,Tsai, Jocelyn Palafox,Vazquez, Michael D,Gallagher, Ian,McLaughlin, Karl,Hong, Jill,Lai, Joyce,Lee, Amanda,Chirino-Perez, Angel Omar,Romero-Molina, Francisco,Torres, Juan,Fernandez-Ruiz, Tetsuo,Ashizawa, Janet,Ziegle, Francisco Javier,Jiménez Gil, Birgitt,Schüle
HGG advances · 2022-08-15
pmid:36092952
DNA analysis of benign adult familial myoclonic epilepsy reveals associations between the pathogenic TTTCA repeat insertion in SAMD12 and the nonpathogenic TTTTA repeat expansion in TNRC6A.
Akane,Terasaki, Masayuki,Nakamura, Yuka,Urata, Hanae,Hiwatashi, Izumi,Yokoyama, Takeshi,Yasuda, Teiichi,Onuma, Kazumaru,Wada, Sunao,Kaneko, Rumiko,Kan, Shin-Ichi,Niwa, Ohiko,Hashimoto, Osamu,Komure, Yu-Ichi,Goto, Yuko,Yamagishi, Misa,Nakano, Yoshihiko,Furusawa, Akira,Sano
Journal of human genetics · 2020-10-10
pmid:33040085
Intronic (TTTGA)
Zhidong,Cen, You,Chen, Dehao,Yang, Qingchen,Zhu, Si,Chen, Xinhui,Chen, Bo,Wang, Fei,Xie, Zhiyuan,Ouyang, Zhengwen,Jiang, Aisi,Fu, Ben,Hu, Houmin,Yin, Xia,Qiu, Feng,Yu, Xiaoping,Du, Weicheng,Hao, Yuxi,Liu, Haotian,Wang, Lebo,Wang, Xiafei,Yu, Yichuan,Xiao, Chunyu,Liu, Jianfeng,Xiao, Yongxing,Zhou, Wei,Yang, Baorong,Zhang, Wei,Luo
Movement disorders : official journal of the Movement Disorder Society · 2019-09-04
pmid:31483537
TTTCA repeat expansion causes familial cortical myoclonic tremor with epilepsy.
X X,Lei, Q,Liu, Q,Lu, Y,Huang, X Q,Zhou, H Y,Sun, L W,Wu, L Y,Cui, X,Zhang
European journal of neurology · 2018-11-30
pmid:30351492
Mechanism of allele-selective inhibition of huntingtin expression by duplex RNAs that target CAG repeats: function through the RNAi pathway.
Jiaxin,Hu, Jing,Liu, Dongbo,Yu, Yongjun,Chu, David R,Corey
Nucleic acids research · 2012-10-04
pmid:23042244