FAME7 RAPGEF2

Disease ID
FAME7
Gene ID
RAPGEF2

Disease

Name
Familial adult myoclonic epilepsy type 7
Inheritance
Autosomal dominant
Description
Cortical tremor, seizures with generalised motor (tonic-clonic) onset1 .
Prevalence
FAME overall is 1/35,000 in Japan. Repeat expansion found in individuals of East Asian ancestry1 .
Age of OnsetYears18  37
Age of Onset Details
Typical: 20-332 ; Range: 183 - 372 .

Locus

Details
The locus structure is (TTTTA)exp(TTTCA)exp(TTTTA)n, where only the TTTCA is specific to affected individuals as a pathogenic insertion3,2 . Pathogenic expansions range from 60 to thousands of repeats3,2 . Interruptions seen: TATTA, TTTTTA4 .
Mechanism
GoF?
RNA toxicity hypothesized3 .
Year
20183
Location in Gene
Intron 14
Gene Strand

Alleles

Ref. Motif
TTTTA
Pathogenic (ref.)
TTTCA
Pathogenic (gene)
ATTTC
Unknown (ref.)
TTTTT, TTATG
Unknown (gene)
TTTTT, ATGTT
PathogenicUnits60  2,200

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
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
3
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
4
Comprehensive genetic diagnosis of tandem repeat expansion disorders with programmable targeted nanopore sequencing.
Igor,Stevanovski, Sanjog R,Chintalaphani, Hasindu,Gamaarachchi, James M,Ferguson, Sandy S,Pineda, Carolin K,Scriba, Michel,Tchan, Victor,Fung, Karl,Ng, Andrea,Cortese, Henry,Houlden, Carol,Dobson-Stone, Lauren,Fitzpatrick, Glenda,Halliday, Gianina,Ravenscroft, Mark R,Davis, Nigel G,Laing, Avi,Fellner, Marina,Kennerson, Kishore R,Kumar, Ira W,Deveson
Science advances · 2022-03-04
pmid:35245110

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